egl: drop unused _EGLDriver from SwapInterval()
[platform/upstream/mesa.git] / src / egl / drivers / dri2 / egl_dri2.c
1 /*
2  * Copyright © 2010 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22  * DEALINGS IN THE SOFTWARE.
23  *
24  * Authors:
25  *    Kristian Høgsberg <krh@bitplanet.net>
26  */
27
28 #include <stdbool.h>
29 #include <stdint.h>
30 #include <stdbool.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <stdio.h>
34 #include <limits.h>
35 #include <dlfcn.h>
36 #include <fcntl.h>
37 #include <errno.h>
38 #include <unistd.h>
39 #include <c11/threads.h>
40 #include <time.h>
41 #ifdef HAVE_LIBDRM
42 #include <xf86drm.h>
43 #include "drm-uapi/drm_fourcc.h"
44 #endif
45 #include <GL/gl.h>
46 #include <GL/internal/dri_interface.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49
50 #ifdef HAVE_WAYLAND_PLATFORM
51 #include <wayland-client.h>
52 #include "wayland-drm.h"
53 #include "wayland-drm-client-protocol.h"
54 #include "linux-dmabuf-unstable-v1-client-protocol.h"
55 #endif
56
57 #ifdef HAVE_X11_PLATFORM
58 #include "X11/Xlibint.h"
59 #endif
60
61 #include "egldefines.h"
62 #include "egl_dri2.h"
63 #include "GL/mesa_glinterop.h"
64 #include "loader/loader.h"
65 #include "util/os_file.h"
66 #include "util/u_atomic.h"
67 #include "util/u_vector.h"
68 #include "mapi/glapi/glapi.h"
69 #include "util/bitscan.h"
70 #include "util/u_math.h"
71
72 /* Additional definitions not yet in the drm_fourcc.h.
73  */
74 #ifndef DRM_FORMAT_P010
75 #define DRM_FORMAT_P010          fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
76 #endif
77
78 #ifndef DRM_FORMAT_P012
79 #define DRM_FORMAT_P012          fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
80 #endif
81
82 #ifndef DRM_FORMAT_P016
83 #define DRM_FORMAT_P016          fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
84 #endif
85
86 #define NUM_ATTRIBS 12
87
88 static const struct dri2_pbuffer_visual {
89    const char *format_name;
90    unsigned int dri_image_format;
91    int rgba_shifts[4];
92    unsigned int rgba_sizes[4];
93 } dri2_pbuffer_visuals[] = {
94    {
95       "ABGR16F",
96       __DRI_IMAGE_FORMAT_ABGR16161616F,
97       { 0, 16, 32, 48 },
98       { 16, 16, 16, 16 }
99    },
100    {
101       "XBGR16F",
102       __DRI_IMAGE_FORMAT_XBGR16161616F,
103       { 0, 16, 32, -1 },
104       { 16, 16, 16, 0 }
105    },
106    {
107       "A2RGB10",
108       __DRI_IMAGE_FORMAT_ARGB2101010,
109       { 20, 10, 0, 30 },
110       { 10, 10, 10, 2 }
111    },
112    {
113       "X2RGB10",
114       __DRI_IMAGE_FORMAT_XRGB2101010,
115       { 20, 10, 0, -1 },
116       { 10, 10, 10, 0 }
117    },
118    {
119       "ARGB8888",
120       __DRI_IMAGE_FORMAT_ARGB8888,
121       { 16, 8, 0, 24 },
122       { 8, 8, 8, 8 }
123    },
124    {
125       "RGB888",
126       __DRI_IMAGE_FORMAT_XRGB8888,
127       { 16, 8, 0, -1 },
128       { 8, 8, 8, 0 }
129    },
130    {
131       "RGB565",
132       __DRI_IMAGE_FORMAT_RGB565,
133       { 11, 5, 0, -1 },
134       { 5, 6, 5, 0 }
135    },
136 };
137
138 static void
139 dri_set_background_context(void *loaderPrivate)
140 {
141    _EGLContext *ctx = _eglGetCurrentContext();
142    _EGLThreadInfo *t = _eglGetCurrentThread();
143
144    _eglBindContextToThread(ctx, t);
145 }
146
147 static void
148 dri2_gl_flush()
149 {
150    static void (*glFlush)(void);
151    static mtx_t glFlushMutex = _MTX_INITIALIZER_NP;
152
153    mtx_lock(&glFlushMutex);
154    if (!glFlush)
155       glFlush = _glapi_get_proc_address("glFlush");
156    mtx_unlock(&glFlushMutex);
157
158    /* if glFlush is not available things are horribly broken */
159    if (!glFlush) {
160       _eglLog(_EGL_WARNING, "DRI2: failed to find glFlush entry point");
161       return;
162    }
163
164    glFlush();
165 }
166
167 static GLboolean
168 dri_is_thread_safe(void *loaderPrivate)
169 {
170    struct dri2_egl_surface *dri2_surf = loaderPrivate;
171    UNUSED _EGLDisplay *display =  dri2_surf->base.Resource.Display;
172
173 #ifdef HAVE_X11_PLATFORM
174    Display *xdpy = (Display*)display->PlatformDisplay;
175
176    /* Check Xlib is running in thread safe mode when running on EGL/X11-xlib
177     * platform
178     *
179     * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
180     * It wll be NULL if XInitThreads wasn't called.
181     */
182    if (display->Platform == _EGL_PLATFORM_X11 && xdpy && !xdpy->lock_fns)
183       return false;
184 #endif
185
186 #ifdef HAVE_WAYLAND_PLATFORM
187    if (display->Platform == _EGL_PLATFORM_WAYLAND)
188       return true;
189 #endif
190
191    return true;
192 }
193
194 const __DRIbackgroundCallableExtension background_callable_extension = {
195    .base = { __DRI_BACKGROUND_CALLABLE, 2 },
196
197    .setBackgroundContext = dri_set_background_context,
198    .isThreadSafe         = dri_is_thread_safe,
199 };
200
201 const __DRIuseInvalidateExtension use_invalidate = {
202    .base = { __DRI_USE_INVALIDATE, 1 }
203 };
204
205 static void
206 dri2_get_pbuffer_drawable_info(__DRIdrawable * draw,
207                                int *x, int *y, int *w, int *h,
208                                void *loaderPrivate)
209 {
210    struct dri2_egl_surface *dri2_surf = loaderPrivate;
211
212    *x = *y = 0;
213    *w = dri2_surf->base.Width;
214    *h = dri2_surf->base.Height;
215 }
216
217 static int
218 dri2_get_bytes_per_pixel(struct dri2_egl_surface *dri2_surf)
219 {
220    const int depth = dri2_surf->base.Config->BufferSize;
221    return depth ? util_next_power_of_two(depth / 8) : 0;
222 }
223
224 static void
225 dri2_put_image(__DRIdrawable * draw, int op,
226                int x, int y, int w, int h,
227                char *data, void *loaderPrivate)
228 {
229    struct dri2_egl_surface *dri2_surf = loaderPrivate;
230    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
231    const int width = dri2_surf->base.Width;
232    const int height = dri2_surf->base.Height;
233    const int dst_stride = width*bpp;
234    const int src_stride = w*bpp;
235    const int x_offset = x*bpp;
236    int copy_width = src_stride;
237
238    if (!dri2_surf->swrast_device_buffer)
239       dri2_surf->swrast_device_buffer = malloc(height*dst_stride);
240
241    if (dri2_surf->swrast_device_buffer) {
242       const char *src = data;
243       char *dst = dri2_surf->swrast_device_buffer;
244
245       dst += x_offset;
246       dst += y*dst_stride;
247
248       /* Drivers are allowed to submit OOB PutImage requests, so clip here. */
249       if (copy_width > dst_stride - x_offset)
250          copy_width = dst_stride - x_offset;
251       if (h > height - y)
252          h = height - y;
253
254       for (; 0 < h; --h) {
255          memcpy(dst, src, copy_width);
256          dst += dst_stride;
257          src += src_stride;
258       }
259    }
260 }
261
262 static void
263 dri2_get_image(__DRIdrawable * read,
264                int x, int y, int w, int h,
265                char *data, void *loaderPrivate)
266 {
267    struct dri2_egl_surface *dri2_surf = loaderPrivate;
268    const int bpp = dri2_get_bytes_per_pixel(dri2_surf);
269    const int width = dri2_surf->base.Width;
270    const int height = dri2_surf->base.Height;
271    const int src_stride = width*bpp;
272    const int dst_stride = w*bpp;
273    const int x_offset = x*bpp;
274    int copy_width = dst_stride;
275    const char *src = dri2_surf->swrast_device_buffer;
276    char *dst = data;
277
278    if (!src) {
279       memset(data, 0, copy_width * h);
280       return;
281    }
282
283    src += x_offset;
284    src += y*src_stride;
285
286    /* Drivers are allowed to submit OOB GetImage requests, so clip here. */
287    if (copy_width > src_stride - x_offset)
288       copy_width = src_stride - x_offset;
289    if (h > height - y)
290       h = height - y;
291
292    for (; 0 < h; --h) {
293       memcpy(dst, src, copy_width);
294       src += src_stride;
295       dst += dst_stride;
296    }
297
298 }
299
300 /* HACK: technically we should have swrast_null, instead of these.
301  */
302 const __DRIswrastLoaderExtension swrast_pbuffer_loader_extension = {
303    .base            = { __DRI_SWRAST_LOADER, 1 },
304    .getDrawableInfo = dri2_get_pbuffer_drawable_info,
305    .putImage        = dri2_put_image,
306    .getImage        = dri2_get_image,
307 };
308
309 static const EGLint dri2_to_egl_attribute_map[__DRI_ATTRIB_MAX] = {
310    [__DRI_ATTRIB_BUFFER_SIZE ]          = EGL_BUFFER_SIZE,
311    [__DRI_ATTRIB_LEVEL]                 = EGL_LEVEL,
312    [__DRI_ATTRIB_LUMINANCE_SIZE]        = EGL_LUMINANCE_SIZE,
313    [__DRI_ATTRIB_DEPTH_SIZE]            = EGL_DEPTH_SIZE,
314    [__DRI_ATTRIB_STENCIL_SIZE]          = EGL_STENCIL_SIZE,
315    [__DRI_ATTRIB_SAMPLE_BUFFERS]        = EGL_SAMPLE_BUFFERS,
316    [__DRI_ATTRIB_SAMPLES]               = EGL_SAMPLES,
317    [__DRI_ATTRIB_MAX_PBUFFER_WIDTH]     = EGL_MAX_PBUFFER_WIDTH,
318    [__DRI_ATTRIB_MAX_PBUFFER_HEIGHT]    = EGL_MAX_PBUFFER_HEIGHT,
319    [__DRI_ATTRIB_MAX_PBUFFER_PIXELS]    = EGL_MAX_PBUFFER_PIXELS,
320    [__DRI_ATTRIB_MAX_SWAP_INTERVAL]     = EGL_MAX_SWAP_INTERVAL,
321    [__DRI_ATTRIB_MIN_SWAP_INTERVAL]     = EGL_MIN_SWAP_INTERVAL,
322    [__DRI_ATTRIB_YINVERTED]             = EGL_Y_INVERTED_NOK,
323 };
324
325 const __DRIconfig *
326 dri2_get_dri_config(struct dri2_egl_config *conf, EGLint surface_type,
327                     EGLenum colorspace)
328 {
329    const bool double_buffer = surface_type == EGL_WINDOW_BIT;
330    const bool srgb = colorspace == EGL_GL_COLORSPACE_SRGB_KHR;
331
332    return conf->dri_config[double_buffer][srgb];
333 }
334
335 static EGLBoolean
336 dri2_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
337 {
338    if (_eglCompareConfigs(conf, criteria, NULL, EGL_FALSE) != 0)
339       return EGL_FALSE;
340
341    if (!_eglMatchConfig(conf, criteria))
342       return EGL_FALSE;
343
344    return EGL_TRUE;
345 }
346
347 void
348 dri2_get_shifts_and_sizes(const __DRIcoreExtension *core,
349                           const __DRIconfig *config, int *shifts,
350                           unsigned int *sizes)
351 {
352    unsigned int mask;
353
354    if (core->getConfigAttrib(config, __DRI_ATTRIB_RED_SHIFT, (unsigned int *)&shifts[0])) {
355       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SHIFT, (unsigned int *)&shifts[1]);
356       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SHIFT, (unsigned int *)&shifts[2]);
357       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SHIFT, (unsigned int *)&shifts[3]);
358    } else {
359       /* Driver isn't exposing shifts, so convert masks to shifts */
360       core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &mask);
361       shifts[0] = ffs(mask) - 1;
362       core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &mask);
363       shifts[1] = ffs(mask) - 1;
364       core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &mask);
365       shifts[2] = ffs(mask) - 1;
366       core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &mask);
367       shifts[3] = ffs(mask) - 1;
368    }
369
370    core->getConfigAttrib(config, __DRI_ATTRIB_RED_SIZE, &sizes[0]);
371    core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_SIZE, &sizes[1]);
372    core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_SIZE, &sizes[2]);
373    core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_SIZE, &sizes[3]);
374 }
375
376 void
377 dri2_get_render_type_float(const __DRIcoreExtension *core,
378                            const __DRIconfig *config,
379                            bool *is_float)
380 {
381    unsigned int render_type;
382
383    core->getConfigAttrib(config, __DRI_ATTRIB_RENDER_TYPE, &render_type);
384    *is_float = (render_type & __DRI_ATTRIB_FLOAT_BIT) ? true : false;
385 }
386
387 unsigned int
388 dri2_image_format_for_pbuffer_config(struct dri2_egl_display *dri2_dpy,
389                                      const __DRIconfig *config)
390 {
391    int shifts[4];
392    unsigned int sizes[4];
393
394    dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
395
396    for (unsigned i = 0; i < ARRAY_SIZE(dri2_pbuffer_visuals); ++i) {
397       const struct dri2_pbuffer_visual *visual = &dri2_pbuffer_visuals[i];
398
399       if (shifts[0] == visual->rgba_shifts[0] &&
400           shifts[1] == visual->rgba_shifts[1] &&
401           shifts[2] == visual->rgba_shifts[2] &&
402           shifts[3] == visual->rgba_shifts[3] &&
403           sizes[0] == visual->rgba_sizes[0] &&
404           sizes[1] == visual->rgba_sizes[1] &&
405           sizes[2] == visual->rgba_sizes[2] &&
406           sizes[3] == visual->rgba_sizes[3]) {
407          return visual->dri_image_format;
408       }
409    }
410
411    return __DRI_IMAGE_FORMAT_NONE;
412 }
413
414 struct dri2_egl_config *
415 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
416                 EGLint surface_type, const EGLint *attr_list,
417                 const int *rgba_shifts, const unsigned int *rgba_sizes)
418 {
419    struct dri2_egl_config *conf;
420    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
421    _EGLConfig base;
422    unsigned int attrib, value, double_buffer;
423    bool srgb = false;
424    EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
425    int dri_shifts[4] = { -1, -1, -1, -1 };
426    unsigned int dri_sizes[4] = { 0, 0, 0, 0 };
427    _EGLConfig *matching_config;
428    EGLint num_configs = 0;
429    EGLint config_id;
430
431    _eglInitConfig(&base, disp, id);
432
433    double_buffer = 0;
434    bind_to_texture_rgb = 0;
435    bind_to_texture_rgba = 0;
436
437    for (int i = 0; i < __DRI_ATTRIB_MAX; ++i) {
438       if (!dri2_dpy->core->indexConfigAttrib(dri_config, i, &attrib, &value))
439          break;
440
441       switch (attrib) {
442       case __DRI_ATTRIB_RENDER_TYPE:
443          if (value & __DRI_ATTRIB_FLOAT_BIT)
444             base.ComponentType = EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT;
445          if (value & __DRI_ATTRIB_RGBA_BIT)
446             value = EGL_RGB_BUFFER;
447          else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
448             value = EGL_LUMINANCE_BUFFER;
449          else
450             return NULL;
451          base.ColorBufferType = value;
452          break;
453
454       case __DRI_ATTRIB_CONFIG_CAVEAT:
455          if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
456             value = EGL_NON_CONFORMANT_CONFIG;
457          else if (value & __DRI_ATTRIB_SLOW_BIT)
458             value = EGL_SLOW_CONFIG;
459          else
460             value = EGL_NONE;
461          base.ConfigCaveat = value;
462          break;
463
464       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
465          bind_to_texture_rgb = value;
466          break;
467
468       case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
469          bind_to_texture_rgba = value;
470          break;
471
472       case __DRI_ATTRIB_DOUBLE_BUFFER:
473          double_buffer = value;
474          break;
475
476       case __DRI_ATTRIB_RED_SIZE:
477          dri_sizes[0] = value;
478          base.RedSize = value;
479          break;
480
481       case __DRI_ATTRIB_RED_MASK:
482          dri_shifts[0] = ffs(value) - 1;
483          break;
484
485       case __DRI_ATTRIB_RED_SHIFT:
486          dri_shifts[0] = value;
487          break;
488
489       case __DRI_ATTRIB_GREEN_SIZE:
490          dri_sizes[1] = value;
491          base.GreenSize = value;
492          break;
493
494       case __DRI_ATTRIB_GREEN_MASK:
495          dri_shifts[1] = ffs(value) - 1;
496          break;
497
498       case __DRI_ATTRIB_GREEN_SHIFT:
499          dri_shifts[1] = value;
500          break;
501
502       case __DRI_ATTRIB_BLUE_SIZE:
503          dri_sizes[2] = value;
504          base.BlueSize = value;
505          break;
506
507       case __DRI_ATTRIB_BLUE_MASK:
508          dri_shifts[2] = ffs(value) - 1;
509          break;
510
511       case __DRI_ATTRIB_BLUE_SHIFT:
512          dri_shifts[2] = value;
513          break;
514
515      case __DRI_ATTRIB_ALPHA_SIZE:
516          dri_sizes[3] = value;
517          base.AlphaSize = value;
518          break;
519
520       case __DRI_ATTRIB_ALPHA_MASK:
521          dri_shifts[3] = ffs(value) - 1;
522          break;
523
524       case __DRI_ATTRIB_ALPHA_SHIFT:
525          dri_shifts[3] = value;
526          break;
527
528       case __DRI_ATTRIB_ACCUM_RED_SIZE:
529       case __DRI_ATTRIB_ACCUM_GREEN_SIZE:
530       case __DRI_ATTRIB_ACCUM_BLUE_SIZE:
531       case __DRI_ATTRIB_ACCUM_ALPHA_SIZE:
532          /* Don't expose visuals with the accumulation buffer. */
533          if (value > 0)
534             return NULL;
535          break;
536
537       case __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE:
538          srgb = value != 0;
539          if (!disp->Extensions.KHR_gl_colorspace && srgb)
540             return NULL;
541          break;
542
543       case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
544          base.MaxPbufferWidth = _EGL_MAX_PBUFFER_WIDTH;
545          break;
546       case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
547          base.MaxPbufferHeight = _EGL_MAX_PBUFFER_HEIGHT;
548          break;
549       case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
550          if (disp->Extensions.KHR_mutable_render_buffer)
551             surface_type |= EGL_MUTABLE_RENDER_BUFFER_BIT_KHR;
552          break;
553       default:
554          key = dri2_to_egl_attribute_map[attrib];
555          if (key != 0)
556             _eglSetConfigKey(&base, key, value);
557          break;
558       }
559    }
560
561    if (attr_list)
562       for (int i = 0; attr_list[i] != EGL_NONE; i += 2)
563          _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
564
565    if (rgba_shifts && memcmp(rgba_shifts, dri_shifts, sizeof(dri_shifts)))
566       return NULL;
567
568    if (rgba_sizes && memcmp(rgba_sizes, dri_sizes, sizeof(dri_sizes)))
569       return NULL;
570
571    base.NativeRenderable = EGL_TRUE;
572
573    base.SurfaceType = surface_type;
574    if (surface_type & (EGL_PBUFFER_BIT |
575        (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
576       base.BindToTextureRGB = bind_to_texture_rgb;
577       if (base.AlphaSize > 0)
578          base.BindToTextureRGBA = bind_to_texture_rgba;
579    }
580
581    if (double_buffer) {
582       surface_type &= ~EGL_PIXMAP_BIT;
583    }
584
585    /* No support for pbuffer + MSAA for now.
586     *
587     * XXX TODO: pbuffer + MSAA does not work and causes crashes.
588     * See QT bugreport: https://bugreports.qt.io/browse/QTBUG-47509
589     */
590    if (base.Samples) {
591       surface_type &= ~EGL_PBUFFER_BIT;
592    }
593
594    if (!surface_type)
595       return NULL;
596
597    base.RenderableType = disp->ClientAPIs;
598    base.Conformant = disp->ClientAPIs;
599
600    base.MinSwapInterval = dri2_dpy->min_swap_interval;
601    base.MaxSwapInterval = dri2_dpy->max_swap_interval;
602
603    if (!_eglValidateConfig(&base, EGL_FALSE)) {
604       _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
605       return NULL;
606    }
607
608    config_id = base.ConfigID;
609    base.ConfigID    = EGL_DONT_CARE;
610    base.SurfaceType = EGL_DONT_CARE;
611    num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
612                                  (_EGLArrayForEach) dri2_match_config, &base);
613
614    if (num_configs == 1) {
615       conf = (struct dri2_egl_config *) matching_config;
616
617       if (!conf->dri_config[double_buffer][srgb])
618          conf->dri_config[double_buffer][srgb] = dri_config;
619       else
620          /* a similar config type is already added (unlikely) => discard */
621          return NULL;
622    }
623    else if (num_configs == 0) {
624       conf = calloc(1, sizeof *conf);
625       if (conf == NULL)
626          return NULL;
627
628       conf->dri_config[double_buffer][srgb] = dri_config;
629
630       memcpy(&conf->base, &base, sizeof base);
631       conf->base.SurfaceType = 0;
632       conf->base.ConfigID = config_id;
633
634       _eglLinkConfig(&conf->base);
635    }
636    else {
637       unreachable("duplicates should not be possible");
638       return NULL;
639    }
640
641    conf->base.SurfaceType |= surface_type;
642
643    return conf;
644 }
645
646 EGLBoolean
647 dri2_add_pbuffer_configs_for_visuals(_EGLDisplay *disp)
648 {
649    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
650    unsigned int format_count[ARRAY_SIZE(dri2_pbuffer_visuals)] = { 0 };
651    unsigned int config_count = 0;
652
653    for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
654       for (unsigned j = 0; j < ARRAY_SIZE(dri2_pbuffer_visuals); j++) {
655          struct dri2_egl_config *dri2_conf;
656
657          dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
658                config_count + 1, EGL_PBUFFER_BIT, NULL,
659                dri2_pbuffer_visuals[j].rgba_shifts, dri2_pbuffer_visuals[j].rgba_sizes);
660
661          if (dri2_conf) {
662             if (dri2_conf->base.ConfigID == config_count + 1)
663                config_count++;
664             format_count[j]++;
665          }
666       }
667    }
668
669    for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
670       if (!format_count[i]) {
671          _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
672                dri2_pbuffer_visuals[i].format_name);
673       }
674    }
675
676    return (config_count != 0);
677 }
678
679 __DRIimage *
680 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
681 {
682    _EGLDisplay *disp = data;
683    struct dri2_egl_image *dri2_img;
684    _EGLImage *img;
685
686    (void) screen;
687
688    img = _eglLookupImage(image, disp);
689    if (img == NULL) {
690       _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
691       return NULL;
692    }
693
694    dri2_img = dri2_egl_image(image);
695
696    return dri2_img->dri_image;
697 }
698
699 const __DRIimageLookupExtension image_lookup_extension = {
700    .base = { __DRI_IMAGE_LOOKUP, 1 },
701
702    .lookupEGLImage       = dri2_lookup_egl_image
703 };
704
705 struct dri2_extension_match {
706    const char *name;
707    int version;
708    int offset;
709 };
710
711 static const struct dri2_extension_match dri3_driver_extensions[] = {
712    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
713    { __DRI_IMAGE_DRIVER, 1, offsetof(struct dri2_egl_display, image_driver) },
714    { NULL, 0, 0 }
715 };
716
717 static const struct dri2_extension_match dri2_driver_extensions[] = {
718    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
719    { __DRI_DRI2, 2, offsetof(struct dri2_egl_display, dri2) },
720    { NULL, 0, 0 }
721 };
722
723 static const struct dri2_extension_match dri2_core_extensions[] = {
724    { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
725    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
726    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
727    { NULL, 0, 0 }
728 };
729
730 static const struct dri2_extension_match swrast_driver_extensions[] = {
731    { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
732    { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
733    { NULL, 0, 0 }
734 };
735
736 static const struct dri2_extension_match swrast_core_extensions[] = {
737    { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
738    { NULL, 0, 0 }
739 };
740
741 static const struct dri2_extension_match optional_driver_extensions[] = {
742    { __DRI_CONFIG_OPTIONS, 1, offsetof(struct dri2_egl_display, configOptions) },
743    { NULL, 0, 0 }
744 };
745
746 static const struct dri2_extension_match optional_core_extensions[] = {
747    { __DRI2_ROBUSTNESS, 1, offsetof(struct dri2_egl_display, robustness) },
748    { __DRI2_NO_ERROR, 1, offsetof(struct dri2_egl_display, no_error) },
749    { __DRI2_CONFIG_QUERY, 1, offsetof(struct dri2_egl_display, config) },
750    { __DRI2_FENCE, 1, offsetof(struct dri2_egl_display, fence) },
751    { __DRI2_BUFFER_DAMAGE, 1, offsetof(struct dri2_egl_display, buffer_damage) },
752    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
753    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
754    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
755    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
756    { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
757    { __DRI_MUTABLE_RENDER_BUFFER_DRIVER, 1, offsetof(struct dri2_egl_display, mutable_render_buffer) },
758    { NULL, 0, 0 }
759 };
760
761 static EGLBoolean
762 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
763                      const struct dri2_extension_match *matches,
764                      const __DRIextension **extensions,
765                      bool optional)
766 {
767    int ret = EGL_TRUE;
768    void *field;
769
770    for (int i = 0; extensions[i]; i++) {
771       _eglLog(_EGL_DEBUG, "found extension `%s'", extensions[i]->name);
772       for (int j = 0; matches[j].name; j++) {
773          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
774              extensions[i]->version >= matches[j].version) {
775             field = ((char *) dri2_dpy + matches[j].offset);
776             *(const __DRIextension **) field = extensions[i];
777             _eglLog(_EGL_INFO, "found extension %s version %d",
778                     extensions[i]->name, extensions[i]->version);
779             break;
780          }
781       }
782    }
783
784    for (int j = 0; matches[j].name; j++) {
785       field = ((char *) dri2_dpy + matches[j].offset);
786       if (*(const __DRIextension **) field == NULL) {
787          if (optional) {
788             _eglLog(_EGL_DEBUG, "did not find optional extension %s version %d",
789                     matches[j].name, matches[j].version);
790          } else {
791             _eglLog(_EGL_WARNING, "did not find extension %s version %d",
792                     matches[j].name, matches[j].version);
793             ret = EGL_FALSE;
794          }
795       }
796    }
797
798    return ret;
799 }
800
801 static const __DRIextension **
802 dri2_open_driver(_EGLDisplay *disp)
803 {
804    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
805    static const char *search_path_vars[] = {
806       "LIBGL_DRIVERS_PATH",
807       NULL,
808    };
809
810    return loader_open_driver(dri2_dpy->driver_name,
811                              &dri2_dpy->driver,
812                              search_path_vars);
813 }
814
815 static EGLBoolean
816 dri2_load_driver_common(_EGLDisplay *disp,
817                         const struct dri2_extension_match *driver_extensions)
818 {
819    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
820    const __DRIextension **extensions;
821
822    extensions = dri2_open_driver(disp);
823    if (!extensions)
824       return EGL_FALSE;
825
826    if (!dri2_bind_extensions(dri2_dpy, driver_extensions, extensions, false)) {
827       dlclose(dri2_dpy->driver);
828       dri2_dpy->driver = NULL;
829       return EGL_FALSE;
830    }
831    dri2_dpy->driver_extensions = extensions;
832
833    dri2_bind_extensions(dri2_dpy, optional_driver_extensions, extensions, true);
834
835    return EGL_TRUE;
836 }
837
838 EGLBoolean
839 dri2_load_driver(_EGLDisplay *disp)
840 {
841    return dri2_load_driver_common(disp, dri2_driver_extensions);
842 }
843
844 EGLBoolean
845 dri2_load_driver_dri3(_EGLDisplay *disp)
846 {
847    return dri2_load_driver_common(disp, dri3_driver_extensions);
848 }
849
850 EGLBoolean
851 dri2_load_driver_swrast(_EGLDisplay *disp)
852 {
853    return dri2_load_driver_common(disp, swrast_driver_extensions);
854 }
855
856 static unsigned
857 dri2_renderer_query_integer(struct dri2_egl_display *dri2_dpy, int param)
858 {
859    const __DRI2rendererQueryExtension *rendererQuery = dri2_dpy->rendererQuery;
860    unsigned int value = 0;
861
862    if (!rendererQuery ||
863        rendererQuery->queryInteger(dri2_dpy->dri_screen, param, &value) == -1)
864       return 0;
865
866    return value;
867 }
868
869 static const char *
870 dri2_query_driver_name(_EGLDisplay *disp)
871 {
872     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
873     return dri2_dpy->driver_name;
874 }
875
876 static char *
877 dri2_query_driver_config(_EGLDisplay *disp)
878 {
879     struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
880     const __DRIconfigOptionsExtension *ext = dri2_dpy->configOptions;
881
882     if (ext->base.version >= 2)
883         return ext->getXml(dri2_dpy->driver_name);
884
885     return strdup(ext->xml);
886 }
887
888
889 void
890 dri2_setup_screen(_EGLDisplay *disp)
891 {
892    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
893    unsigned int api_mask;
894
895    /*
896     * EGL 1.5 specification defines the default value to 1. Moreover,
897     * eglSwapInterval() is required to clamp requested value to the supported
898     * range. Since the default value is implicitly assumed to be supported,
899     * use it as both minimum and maximum for the platforms that do not allow
900     * changing the interval. Platforms, which allow it (e.g. x11, wayland)
901     * override these values already.
902     */
903    dri2_dpy->min_swap_interval = 1;
904    dri2_dpy->max_swap_interval = 1;
905    dri2_dpy->default_swap_interval = 1;
906
907    if (dri2_dpy->image_driver) {
908       api_mask = dri2_dpy->image_driver->getAPIMask(dri2_dpy->dri_screen);
909    } else if (dri2_dpy->dri2) {
910       api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
911    } else {
912       assert(dri2_dpy->swrast);
913       api_mask = 1 << __DRI_API_OPENGL |
914                  1 << __DRI_API_GLES |
915                  1 << __DRI_API_GLES2 |
916                  1 << __DRI_API_GLES3;
917    }
918
919    disp->ClientAPIs = 0;
920    if ((api_mask & (1 <<__DRI_API_OPENGL)) && _eglIsApiValid(EGL_OPENGL_API))
921       disp->ClientAPIs |= EGL_OPENGL_BIT;
922    if ((api_mask & (1 << __DRI_API_GLES)) && _eglIsApiValid(EGL_OPENGL_ES_API))
923       disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
924    if ((api_mask & (1 << __DRI_API_GLES2)) && _eglIsApiValid(EGL_OPENGL_ES_API))
925       disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
926    if ((api_mask & (1 << __DRI_API_GLES3)) && _eglIsApiValid(EGL_OPENGL_ES_API))
927       disp->ClientAPIs |= EGL_OPENGL_ES3_BIT_KHR;
928
929    assert(dri2_dpy->image_driver || dri2_dpy->dri2 || dri2_dpy->swrast);
930    disp->Extensions.KHR_no_config_context = EGL_TRUE;
931    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
932
933    if (dri2_dpy->configOptions) {
934        disp->Extensions.MESA_query_driver = EGL_TRUE;
935    }
936
937    /* Report back to EGL the bitmask of priorities supported */
938    disp->Extensions.IMG_context_priority =
939       dri2_renderer_query_integer(dri2_dpy,
940                                   __DRI2_RENDERER_HAS_CONTEXT_PRIORITY);
941
942    disp->Extensions.EXT_pixel_format_float = EGL_TRUE;
943
944    if (dri2_renderer_query_integer(dri2_dpy,
945                                    __DRI2_RENDERER_HAS_FRAMEBUFFER_SRGB))
946       disp->Extensions.KHR_gl_colorspace = EGL_TRUE;
947
948    if (dri2_dpy->image_driver ||
949        (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) ||
950        (dri2_dpy->swrast && dri2_dpy->swrast->base.version >= 3)) {
951       disp->Extensions.KHR_create_context = EGL_TRUE;
952
953       if (dri2_dpy->robustness)
954          disp->Extensions.EXT_create_context_robustness = EGL_TRUE;
955    }
956
957    if (dri2_dpy->no_error)
958       disp->Extensions.KHR_create_context_no_error = EGL_TRUE;
959
960    if (dri2_dpy->fence) {
961       disp->Extensions.KHR_fence_sync = EGL_TRUE;
962       disp->Extensions.KHR_wait_sync = EGL_TRUE;
963       if (dri2_dpy->fence->get_fence_from_cl_event)
964          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
965       if (dri2_dpy->fence->base.version >= 2 &&
966           dri2_dpy->fence->get_capabilities) {
967          unsigned capabilities =
968             dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
969          disp->Extensions.ANDROID_native_fence_sync =
970             (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
971       }
972    }
973
974    if (dri2_dpy->blob)
975       disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
976
977    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
978
979    if (dri2_dpy->image) {
980       if (dri2_dpy->image->base.version >= 10 &&
981           dri2_dpy->image->getCapabilities != NULL) {
982          int capabilities;
983
984          capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen);
985          disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0;
986
987          if (dri2_dpy->image->base.version >= 11)
988             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
989       } else {
990          disp->Extensions.MESA_drm_image = EGL_TRUE;
991          if (dri2_dpy->image->base.version >= 11)
992             disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE;
993       }
994
995       disp->Extensions.KHR_image_base = EGL_TRUE;
996       disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
997       if (dri2_dpy->image->base.version >= 5 &&
998           dri2_dpy->image->createImageFromTexture) {
999          disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
1000          disp->Extensions.KHR_gl_texture_cubemap_image = EGL_TRUE;
1001
1002          if (dri2_renderer_query_integer(dri2_dpy,
1003                                          __DRI2_RENDERER_HAS_TEXTURE_3D))
1004              disp->Extensions.KHR_gl_texture_3D_image = EGL_TRUE;
1005       }
1006 #ifdef HAVE_LIBDRM
1007       if (dri2_dpy->image->base.version >= 8 &&
1008           dri2_dpy->image->createImageFromDmaBufs) {
1009          disp->Extensions.EXT_image_dma_buf_import = EGL_TRUE;
1010          disp->Extensions.EXT_image_dma_buf_import_modifiers = EGL_TRUE;
1011       }
1012 #endif
1013    }
1014
1015    if (dri2_dpy->flush_control)
1016       disp->Extensions.KHR_context_flush_control = EGL_TRUE;
1017
1018    if (dri2_dpy->buffer_damage && dri2_dpy->buffer_damage->set_damage_region)
1019       disp->Extensions.KHR_partial_update = EGL_TRUE;
1020 }
1021
1022 void
1023 dri2_setup_swap_interval(_EGLDisplay *disp, int max_swap_interval)
1024 {
1025    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1026    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1027
1028    /* Allow driconf to override applications.*/
1029    if (dri2_dpy->config)
1030       dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1031                                      "vblank_mode", &vblank_mode);
1032    switch (vblank_mode) {
1033    case DRI_CONF_VBLANK_NEVER:
1034       dri2_dpy->min_swap_interval = 0;
1035       dri2_dpy->max_swap_interval = 0;
1036       dri2_dpy->default_swap_interval = 0;
1037       break;
1038    case DRI_CONF_VBLANK_ALWAYS_SYNC:
1039       dri2_dpy->min_swap_interval = 1;
1040       dri2_dpy->max_swap_interval = max_swap_interval;
1041       dri2_dpy->default_swap_interval = 1;
1042       break;
1043    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1044       dri2_dpy->min_swap_interval = 0;
1045       dri2_dpy->max_swap_interval = max_swap_interval;
1046       dri2_dpy->default_swap_interval = 0;
1047       break;
1048    default:
1049    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1050       dri2_dpy->min_swap_interval = 0;
1051       dri2_dpy->max_swap_interval = max_swap_interval;
1052       dri2_dpy->default_swap_interval = 1;
1053       break;
1054    }
1055 }
1056
1057 /* All platforms but DRM call this function to create the screen and populate
1058  * the driver_configs. DRM inherits that information from its display - GBM.
1059  */
1060 EGLBoolean
1061 dri2_create_screen(_EGLDisplay *disp)
1062 {
1063    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1064
1065    if (dri2_dpy->image_driver) {
1066       dri2_dpy->dri_screen =
1067          dri2_dpy->image_driver->createNewScreen2(0, dri2_dpy->fd,
1068                                                   dri2_dpy->loader_extensions,
1069                                                   dri2_dpy->driver_extensions,
1070                                                   &dri2_dpy->driver_configs,
1071                                                   disp);
1072    } else if (dri2_dpy->dri2) {
1073       if (dri2_dpy->dri2->base.version >= 4) {
1074          dri2_dpy->dri_screen =
1075             dri2_dpy->dri2->createNewScreen2(0, dri2_dpy->fd,
1076                                              dri2_dpy->loader_extensions,
1077                                              dri2_dpy->driver_extensions,
1078                                              &dri2_dpy->driver_configs, disp);
1079       } else {
1080          dri2_dpy->dri_screen =
1081             dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd,
1082                                             dri2_dpy->loader_extensions,
1083                                             &dri2_dpy->driver_configs, disp);
1084       }
1085    } else {
1086       assert(dri2_dpy->swrast);
1087       if (dri2_dpy->swrast->base.version >= 4) {
1088          dri2_dpy->dri_screen =
1089             dri2_dpy->swrast->createNewScreen2(0, dri2_dpy->loader_extensions,
1090                                                dri2_dpy->driver_extensions,
1091                                                &dri2_dpy->driver_configs, disp);
1092       } else {
1093          dri2_dpy->dri_screen =
1094             dri2_dpy->swrast->createNewScreen(0, dri2_dpy->loader_extensions,
1095                                               &dri2_dpy->driver_configs, disp);
1096       }
1097    }
1098
1099    if (dri2_dpy->dri_screen == NULL) {
1100       _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
1101       return EGL_FALSE;
1102    }
1103
1104    dri2_dpy->own_dri_screen = true;
1105    return EGL_TRUE;
1106 }
1107
1108 EGLBoolean
1109 dri2_setup_extensions(_EGLDisplay *disp)
1110 {
1111    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1112    const struct dri2_extension_match *mandatory_core_extensions;
1113    const __DRIextension **extensions;
1114
1115    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
1116
1117    if (dri2_dpy->image_driver || dri2_dpy->dri2)
1118       mandatory_core_extensions = dri2_core_extensions;
1119    else
1120       mandatory_core_extensions = swrast_core_extensions;
1121
1122    if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
1123       return EGL_FALSE;
1124
1125 #ifdef HAVE_DRI3_MODIFIERS
1126    dri2_dpy->multibuffers_available =
1127       (dri2_dpy->dri3_major_version > 1 || (dri2_dpy->dri3_major_version == 1 &&
1128                                             dri2_dpy->dri3_minor_version >= 2)) &&
1129       (dri2_dpy->present_major_version > 1 || (dri2_dpy->present_major_version == 1 &&
1130                                                dri2_dpy->present_minor_version >= 2)) &&
1131       (dri2_dpy->image && dri2_dpy->image->base.version >= 15);
1132 #endif
1133
1134    dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
1135    return EGL_TRUE;
1136 }
1137
1138 /**
1139  * Called via eglInitialize(), drv->Initialize().
1140  *
1141  * This must be guaranteed to be called exactly once, even if eglInitialize is
1142  * called many times (without a eglTerminate in between).
1143  */
1144 static EGLBoolean
1145 dri2_initialize(_EGLDisplay *disp)
1146 {
1147    EGLBoolean ret = EGL_FALSE;
1148    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1149
1150    /* In the case where the application calls eglMakeCurrent(context1),
1151     * eglTerminate, then eglInitialize again (without a call to eglReleaseThread
1152     * or eglMakeCurrent(NULL) before that), dri2_dpy structure is still
1153     * initialized, as we need it to be able to free context1 correctly.
1154     *
1155     * It would probably be safest to forcibly release the display with
1156     * dri2_display_release, to make sure the display is reinitialized correctly.
1157     * However, the EGL spec states that we need to keep a reference to the
1158     * current context (so we cannot call dri2_make_current(NULL)), and therefore
1159     * we would leak context1 as we would be missing the old display connection
1160     * to free it up correctly.
1161     */
1162    if (dri2_dpy) {
1163       dri2_dpy->ref_count++;
1164       return EGL_TRUE;
1165    }
1166
1167    loader_set_logger(_eglLog);
1168
1169    switch (disp->Platform) {
1170    case _EGL_PLATFORM_SURFACELESS:
1171       ret = dri2_initialize_surfaceless(disp);
1172       break;
1173    case _EGL_PLATFORM_DEVICE:
1174       ret = dri2_initialize_device(disp);
1175       break;
1176    case _EGL_PLATFORM_X11:
1177       ret = dri2_initialize_x11(disp);
1178       break;
1179    case _EGL_PLATFORM_DRM:
1180       ret = dri2_initialize_drm(disp);
1181       break;
1182    case _EGL_PLATFORM_WAYLAND:
1183       ret = dri2_initialize_wayland(disp);
1184       break;
1185    case _EGL_PLATFORM_ANDROID:
1186       ret = dri2_initialize_android(disp);
1187       break;
1188    default:
1189       unreachable("Callers ensure we cannot get here.");
1190       return EGL_FALSE;
1191    }
1192
1193    if (!ret)
1194       return EGL_FALSE;
1195
1196    dri2_dpy = dri2_egl_display(disp);
1197    dri2_dpy->ref_count++;
1198
1199    return EGL_TRUE;
1200 }
1201
1202 /**
1203  * Decrement display reference count, and free up display if necessary.
1204  */
1205 static void
1206 dri2_display_release(_EGLDisplay *disp)
1207 {
1208    struct dri2_egl_display *dri2_dpy;
1209
1210    if (!disp)
1211       return;
1212
1213    dri2_dpy = dri2_egl_display(disp);
1214
1215    assert(dri2_dpy->ref_count > 0);
1216    dri2_dpy->ref_count--;
1217
1218    if (dri2_dpy->ref_count > 0)
1219       return;
1220
1221    _eglCleanupDisplay(disp);
1222    dri2_display_destroy(disp);
1223 }
1224
1225 void
1226 dri2_display_destroy(_EGLDisplay *disp)
1227 {
1228    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1229
1230    if (dri2_dpy->own_dri_screen) {
1231       if (dri2_dpy->vtbl && dri2_dpy->vtbl->close_screen_notify)
1232          dri2_dpy->vtbl->close_screen_notify(disp);
1233       dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1234    }
1235    if (dri2_dpy->fd >= 0)
1236       close(dri2_dpy->fd);
1237    if (dri2_dpy->driver)
1238       dlclose(dri2_dpy->driver);
1239    free(dri2_dpy->driver_name);
1240
1241 #ifdef HAVE_WAYLAND_PLATFORM
1242    free(dri2_dpy->device_name);
1243 #endif
1244
1245    switch (disp->Platform) {
1246    case _EGL_PLATFORM_X11:
1247       dri2_teardown_x11(dri2_dpy);
1248       break;
1249    case _EGL_PLATFORM_DRM:
1250       dri2_teardown_drm(dri2_dpy);
1251       break;
1252    case _EGL_PLATFORM_WAYLAND:
1253       dri2_teardown_wayland(dri2_dpy);
1254       break;
1255    default:
1256       /* TODO: add teardown for other platforms */
1257       break;
1258    }
1259
1260    /* The drm platform does not create the screen/driver_configs but reuses
1261     * the ones from the gbm device. As such the gbm itself is responsible
1262     * for the cleanup.
1263     */
1264    if (disp->Platform != _EGL_PLATFORM_DRM && dri2_dpy->driver_configs) {
1265       for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++)
1266          free((__DRIconfig *) dri2_dpy->driver_configs[i]);
1267       free(dri2_dpy->driver_configs);
1268    }
1269    free(dri2_dpy);
1270    disp->DriverData = NULL;
1271 }
1272
1273 __DRIbuffer *
1274 dri2_egl_surface_alloc_local_buffer(struct dri2_egl_surface *dri2_surf,
1275                                     unsigned int att, unsigned int format)
1276 {
1277    struct dri2_egl_display *dri2_dpy =
1278       dri2_egl_display(dri2_surf->base.Resource.Display);
1279
1280    if (att >= ARRAY_SIZE(dri2_surf->local_buffers))
1281       return NULL;
1282
1283    if (!dri2_surf->local_buffers[att]) {
1284       dri2_surf->local_buffers[att] =
1285          dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen, att, format,
1286                                         dri2_surf->base.Width, dri2_surf->base.Height);
1287    }
1288
1289    return dri2_surf->local_buffers[att];
1290 }
1291
1292 void
1293 dri2_egl_surface_free_local_buffers(struct dri2_egl_surface *dri2_surf)
1294 {
1295    struct dri2_egl_display *dri2_dpy =
1296       dri2_egl_display(dri2_surf->base.Resource.Display);
1297
1298    for (int i = 0; i < ARRAY_SIZE(dri2_surf->local_buffers); i++) {
1299       if (dri2_surf->local_buffers[i]) {
1300          dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
1301                                        dri2_surf->local_buffers[i]);
1302          dri2_surf->local_buffers[i] = NULL;
1303       }
1304    }
1305 }
1306
1307 /**
1308  * Called via eglTerminate(), drv->Terminate().
1309  *
1310  * This must be guaranteed to be called exactly once, even if eglTerminate is
1311  * called many times (without a eglInitialize in between).
1312  */
1313 static EGLBoolean
1314 dri2_terminate(_EGLDisplay *disp)
1315 {
1316    /* Release all non-current Context/Surfaces. */
1317    _eglReleaseDisplayResources(disp);
1318
1319    dri2_display_release(disp);
1320
1321    return EGL_TRUE;
1322 }
1323
1324 /**
1325  * Set the error code after a call to
1326  * dri2_egl_display::dri2::createContextAttribs.
1327  */
1328 static void
1329 dri2_create_context_attribs_error(int dri_error)
1330 {
1331    EGLint egl_error;
1332
1333    switch (dri_error) {
1334    case __DRI_CTX_ERROR_SUCCESS:
1335       return;
1336
1337    case __DRI_CTX_ERROR_NO_MEMORY:
1338       egl_error = EGL_BAD_ALLOC;
1339       break;
1340
1341   /* From the EGL_KHR_create_context spec, section "Errors":
1342    *
1343    *   * If <config> does not support a client API context compatible
1344    *     with the requested API major and minor version, [...] context flags,
1345    *     and context reset notification behavior (for client API types where
1346    *     these attributes are supported), then an EGL_BAD_MATCH error is
1347    *     generated.
1348    *
1349    *   * If an OpenGL ES context is requested and the values for
1350    *     attributes EGL_CONTEXT_MAJOR_VERSION_KHR and
1351    *     EGL_CONTEXT_MINOR_VERSION_KHR specify an OpenGL ES version that
1352    *     is not defined, than an EGL_BAD_MATCH error is generated.
1353    *
1354    *   * If an OpenGL context is requested, the requested version is
1355    *     greater than 3.2, and the value for attribute
1356    *     EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR has no bits set; has any
1357    *     bits set other than EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR and
1358    *     EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR; has more than
1359    *     one of these bits set; or if the implementation does not support
1360    *     the requested profile, then an EGL_BAD_MATCH error is generated.
1361    */
1362    case __DRI_CTX_ERROR_BAD_API:
1363    case __DRI_CTX_ERROR_BAD_VERSION:
1364    case __DRI_CTX_ERROR_BAD_FLAG:
1365       egl_error = EGL_BAD_MATCH;
1366       break;
1367
1368   /* From the EGL_KHR_create_context spec, section "Errors":
1369    *
1370    *   * If an attribute name or attribute value in <attrib_list> is not
1371    *     recognized (including unrecognized bits in bitmask attributes),
1372    *     then an EGL_BAD_ATTRIBUTE error is generated."
1373    */
1374    case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
1375    case __DRI_CTX_ERROR_UNKNOWN_FLAG:
1376       egl_error = EGL_BAD_ATTRIBUTE;
1377       break;
1378
1379    default:
1380       assert(!"unknown dri_error code");
1381       egl_error = EGL_BAD_MATCH;
1382       break;
1383    }
1384
1385    _eglError(egl_error, "dri2_create_context");
1386 }
1387
1388 static bool
1389 dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
1390                           struct dri2_egl_display *dri2_dpy,
1391                           uint32_t *ctx_attribs,
1392                           unsigned *num_attribs)
1393 {
1394    int pos = 0;
1395
1396    assert(*num_attribs >= NUM_ATTRIBS);
1397
1398    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
1399    ctx_attribs[pos++] = dri2_ctx->base.ClientMajorVersion;
1400    ctx_attribs[pos++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
1401    ctx_attribs[pos++] = dri2_ctx->base.ClientMinorVersion;
1402
1403    if (dri2_ctx->base.Flags != 0 || dri2_ctx->base.NoError) {
1404       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1405        * extension, don't even try to send it the robust-access flag.
1406        * It may explode.  Instead, generate the required EGL error here.
1407        */
1408       if ((dri2_ctx->base.Flags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) != 0
1409             && !dri2_dpy->robustness) {
1410          _eglError(EGL_BAD_MATCH, "eglCreateContext");
1411          return false;
1412       }
1413
1414       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_FLAGS;
1415       ctx_attribs[pos++] = dri2_ctx->base.Flags |
1416          (dri2_ctx->base.NoError ? __DRI_CTX_FLAG_NO_ERROR : 0);
1417    }
1418
1419    if (dri2_ctx->base.ResetNotificationStrategy != EGL_NO_RESET_NOTIFICATION_KHR) {
1420       /* If the implementation doesn't support the __DRI2_ROBUSTNESS
1421        * extension, don't even try to send it a reset strategy.  It may
1422        * explode.  Instead, generate the required EGL error here.
1423        */
1424       if (!dri2_dpy->robustness) {
1425          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1426          return false;
1427       }
1428
1429       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
1430       ctx_attribs[pos++] = __DRI_CTX_RESET_LOSE_CONTEXT;
1431    }
1432
1433    if (dri2_ctx->base.ContextPriority != EGL_CONTEXT_PRIORITY_MEDIUM_IMG) {
1434       unsigned val;
1435
1436       switch (dri2_ctx->base.ContextPriority) {
1437       case EGL_CONTEXT_PRIORITY_HIGH_IMG:
1438          val = __DRI_CTX_PRIORITY_HIGH;
1439          break;
1440       case EGL_CONTEXT_PRIORITY_MEDIUM_IMG:
1441          val = __DRI_CTX_PRIORITY_MEDIUM;
1442          break;
1443       case EGL_CONTEXT_PRIORITY_LOW_IMG:
1444          val = __DRI_CTX_PRIORITY_LOW;
1445          break;
1446       default:
1447          _eglError(EGL_BAD_CONFIG, "eglCreateContext");
1448          return false;
1449       }
1450
1451       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_PRIORITY;
1452       ctx_attribs[pos++] = val;
1453    }
1454
1455    if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
1456       ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
1457       ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
1458    }
1459
1460    *num_attribs = pos;
1461
1462    return true;
1463 }
1464
1465 /**
1466  * Called via eglCreateContext(), drv->CreateContext().
1467  */
1468 static _EGLContext *
1469 dri2_create_context(_EGLDisplay *disp, _EGLConfig *conf,
1470                     _EGLContext *share_list, const EGLint *attrib_list)
1471 {
1472    struct dri2_egl_context *dri2_ctx;
1473    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1474    struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
1475    __DRIcontext *shared =
1476       dri2_ctx_shared ? dri2_ctx_shared->dri_context : NULL;
1477    struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
1478    const __DRIconfig *dri_config;
1479    int api;
1480    unsigned error;
1481    unsigned num_attribs = NUM_ATTRIBS;
1482    uint32_t ctx_attribs[NUM_ATTRIBS];
1483
1484    dri2_ctx = malloc(sizeof *dri2_ctx);
1485    if (!dri2_ctx) {
1486       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
1487       return NULL;
1488    }
1489
1490    if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
1491       goto cleanup;
1492
1493    /* The EGL_EXT_create_context_robustness spec says:
1494     *
1495     *    "Add to the eglCreateContext context creation errors: [...]
1496     *
1497     *     * If the reset notification behavior of <share_context> and the
1498     *       newly created context are different then an EGL_BAD_MATCH error is
1499     *       generated."
1500     */
1501    if (share_list && share_list->ResetNotificationStrategy !=
1502                      dri2_ctx->base.ResetNotificationStrategy) {
1503       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1504       goto cleanup;
1505    }
1506
1507    /* The EGL_KHR_create_context_no_error spec says:
1508     *
1509     *    "BAD_MATCH is generated if the value of EGL_CONTEXT_OPENGL_NO_ERROR_KHR
1510     *    used to create <share_context> does not match the value of
1511     *    EGL_CONTEXT_OPENGL_NO_ERROR_KHR for the context being created."
1512     */
1513    if (share_list && share_list->NoError != dri2_ctx->base.NoError) {
1514       _eglError(EGL_BAD_MATCH, "eglCreateContext");
1515       goto cleanup;
1516    }
1517
1518    switch (dri2_ctx->base.ClientAPI) {
1519    case EGL_OPENGL_ES_API:
1520       switch (dri2_ctx->base.ClientMajorVersion) {
1521       case 1:
1522          api = __DRI_API_GLES;
1523          break;
1524       case 2:
1525          api = __DRI_API_GLES2;
1526          break;
1527       case 3:
1528          api = __DRI_API_GLES3;
1529          break;
1530       default:
1531          _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1532          free(dri2_ctx);
1533          return NULL;
1534       }
1535       break;
1536    case EGL_OPENGL_API:
1537       if ((dri2_ctx->base.ClientMajorVersion >= 4
1538            || (dri2_ctx->base.ClientMajorVersion == 3
1539                && dri2_ctx->base.ClientMinorVersion >= 2))
1540           && dri2_ctx->base.Profile == EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR)
1541          api = __DRI_API_OPENGL_CORE;
1542       else if (dri2_ctx->base.ClientMajorVersion == 3 &&
1543                dri2_ctx->base.ClientMinorVersion == 1)
1544          api = __DRI_API_OPENGL_CORE;
1545       else
1546          api = __DRI_API_OPENGL;
1547       break;
1548    default:
1549       _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
1550       free(dri2_ctx);
1551       return NULL;
1552    }
1553
1554    if (conf != NULL) {
1555       /* The config chosen here isn't necessarily
1556        * used for surfaces later.
1557        * A pixmap surface will use the single config.
1558        * This opportunity depends on disabling the
1559        * doubleBufferMode check in
1560        * src/mesa/main/context.c:check_compatible()
1561        */
1562       if (dri2_config->dri_config[1][0])
1563          dri_config = dri2_config->dri_config[1][0];
1564       else
1565          dri_config = dri2_config->dri_config[0][0];
1566    }
1567    else
1568       dri_config = NULL;
1569
1570    if (!dri2_fill_context_attribs(dri2_ctx, dri2_dpy, ctx_attribs,
1571                                   &num_attribs))
1572       goto cleanup;
1573
1574    if (dri2_dpy->image_driver) {
1575       dri2_ctx->dri_context =
1576          dri2_dpy->image_driver->createContextAttribs(dri2_dpy->dri_screen,
1577                                                       api,
1578                                                       dri_config,
1579                                                       shared,
1580                                                       num_attribs / 2,
1581                                                       ctx_attribs,
1582                                                       & error,
1583                                                       dri2_ctx);
1584       dri2_create_context_attribs_error(error);
1585    } else if (dri2_dpy->dri2) {
1586       if (dri2_dpy->dri2->base.version >= 3) {
1587          dri2_ctx->dri_context =
1588             dri2_dpy->dri2->createContextAttribs(dri2_dpy->dri_screen,
1589                                                  api,
1590                                                  dri_config,
1591                                                  shared,
1592                                                  num_attribs / 2,
1593                                                  ctx_attribs,
1594                                                  & error,
1595                                                  dri2_ctx);
1596          dri2_create_context_attribs_error(error);
1597       } else {
1598          dri2_ctx->dri_context =
1599             dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
1600                                                    api,
1601                                                    dri_config,
1602                                                    shared,
1603                                                    dri2_ctx);
1604       }
1605    } else {
1606       assert(dri2_dpy->swrast);
1607       if (dri2_dpy->swrast->base.version >= 3) {
1608          dri2_ctx->dri_context =
1609             dri2_dpy->swrast->createContextAttribs(dri2_dpy->dri_screen,
1610                                                    api,
1611                                                    dri_config,
1612                                                    shared,
1613                                                    num_attribs / 2,
1614                                                    ctx_attribs,
1615                                                    & error,
1616                                                    dri2_ctx);
1617          dri2_create_context_attribs_error(error);
1618       } else {
1619          dri2_ctx->dri_context =
1620             dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
1621                                                      api,
1622                                                      dri_config,
1623                                                      shared,
1624                                                      dri2_ctx);
1625       }
1626    }
1627
1628    if (!dri2_ctx->dri_context)
1629       goto cleanup;
1630
1631    return &dri2_ctx->base;
1632
1633  cleanup:
1634    free(dri2_ctx);
1635    return NULL;
1636 }
1637
1638 /**
1639  * Called via eglDestroyContext(), drv->DestroyContext().
1640  */
1641 static EGLBoolean
1642 dri2_destroy_context(_EGLDisplay *disp, _EGLContext *ctx)
1643 {
1644    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1645    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1646
1647    if (_eglPutContext(ctx)) {
1648       dri2_dpy->core->destroyContext(dri2_ctx->dri_context);
1649       free(dri2_ctx);
1650    }
1651
1652    return EGL_TRUE;
1653 }
1654
1655 EGLBoolean
1656 dri2_init_surface(_EGLSurface *surf, _EGLDisplay *disp, EGLint type,
1657         _EGLConfig *conf, const EGLint *attrib_list,
1658         EGLBoolean enable_out_fence, void *native_surface)
1659 {
1660    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1662
1663    dri2_surf->out_fence_fd = -1;
1664    dri2_surf->enable_out_fence = false;
1665    if (dri2_dpy->fence && dri2_dpy->fence->base.version >= 2 &&
1666        dri2_dpy->fence->get_capabilities &&
1667        (dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen) &
1668         __DRI_FENCE_CAP_NATIVE_FD)) {
1669       dri2_surf->enable_out_fence = enable_out_fence;
1670    }
1671
1672    return _eglInitSurface(surf, disp, type, conf, attrib_list, native_surface);
1673 }
1674
1675 static void
1676 dri2_surface_set_out_fence_fd( _EGLSurface *surf, int fence_fd)
1677 {
1678    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1679
1680    if (dri2_surf->out_fence_fd >= 0)
1681       close(dri2_surf->out_fence_fd);
1682
1683    dri2_surf->out_fence_fd = fence_fd;
1684 }
1685
1686 void
1687 dri2_fini_surface(_EGLSurface *surf)
1688 {
1689    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1690
1691    dri2_surface_set_out_fence_fd(surf, -1);
1692    dri2_surf->enable_out_fence = false;
1693 }
1694
1695 static EGLBoolean
1696 dri2_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
1697 {
1698    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1699
1700    if (!_eglPutSurface(surf))
1701       return EGL_TRUE;
1702
1703    return dri2_dpy->vtbl->destroy_surface(disp, surf);
1704 }
1705
1706 static void
1707 dri2_surf_update_fence_fd(_EGLContext *ctx,
1708                           _EGLDisplay *disp, _EGLSurface *surf)
1709 {
1710    __DRIcontext *dri_ctx = dri2_egl_context(ctx)->dri_context;
1711    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1712    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1713    int fence_fd = -1;
1714    void *fence;
1715
1716    if (!dri2_surf->enable_out_fence)
1717       return;
1718
1719    fence = dri2_dpy->fence->create_fence_fd(dri_ctx, -1);
1720    if (fence) {
1721       fence_fd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
1722                                                fence);
1723       dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, fence);
1724    }
1725    dri2_surface_set_out_fence_fd(surf, fence_fd);
1726 }
1727
1728 EGLBoolean
1729 dri2_create_drawable(struct dri2_egl_display *dri2_dpy,
1730                      const __DRIconfig *config,
1731                      struct dri2_egl_surface *dri2_surf,
1732                      void *loaderPrivate)
1733 {
1734    __DRIcreateNewDrawableFunc createNewDrawable;
1735
1736    if (dri2_dpy->image_driver)
1737       createNewDrawable = dri2_dpy->image_driver->createNewDrawable;
1738    else if (dri2_dpy->dri2)
1739       createNewDrawable = dri2_dpy->dri2->createNewDrawable;
1740    else if (dri2_dpy->swrast)
1741       createNewDrawable = dri2_dpy->swrast->createNewDrawable;
1742    else
1743       return _eglError(EGL_BAD_ALLOC, "no createNewDrawable");
1744
1745    dri2_surf->dri_drawable = createNewDrawable(dri2_dpy->dri_screen,
1746                                                config, loaderPrivate);
1747    if (dri2_surf->dri_drawable == NULL)
1748       return _eglError(EGL_BAD_ALLOC, "createNewDrawable");
1749
1750    return EGL_TRUE;
1751 }
1752
1753 /**
1754  * Called via eglMakeCurrent(), drv->MakeCurrent().
1755  */
1756 static EGLBoolean
1757 dri2_make_current(_EGLDisplay *disp, _EGLSurface *dsurf,
1758                   _EGLSurface *rsurf, _EGLContext *ctx)
1759 {
1760    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1761    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1762    _EGLDisplay *old_disp = NULL;
1763    struct dri2_egl_display *old_dri2_dpy = NULL;
1764    _EGLContext *old_ctx;
1765    _EGLSurface *old_dsurf, *old_rsurf;
1766    _EGLSurface *tmp_dsurf, *tmp_rsurf;
1767    __DRIdrawable *ddraw, *rdraw;
1768    __DRIcontext *cctx;
1769    EGLint egl_error = EGL_SUCCESS;
1770
1771    if (!dri2_dpy)
1772       return _eglError(EGL_NOT_INITIALIZED, "eglMakeCurrent");
1773
1774    /* make new bindings, set the EGL error otherwise */
1775    if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
1776       return EGL_FALSE;
1777
1778    if (old_ctx) {
1779       __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
1780       old_disp = old_ctx->Resource.Display;
1781       old_dri2_dpy = dri2_egl_display(old_disp);
1782
1783       /* flush before context switch */
1784       dri2_gl_flush();
1785
1786       if (old_dsurf)
1787          dri2_surf_update_fence_fd(old_ctx, disp, old_dsurf);
1788
1789       /* Disable shared buffer mode */
1790       if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1791           old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1792          old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, false);
1793       }
1794
1795       dri2_dpy->core->unbindContext(old_cctx);
1796    }
1797
1798    ddraw = (dsurf) ? dri2_dpy->vtbl->get_dri_drawable(dsurf) : NULL;
1799    rdraw = (rsurf) ? dri2_dpy->vtbl->get_dri_drawable(rsurf) : NULL;
1800    cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
1801
1802    if (cctx || ddraw || rdraw) {
1803       if (!dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1804          _EGLContext *tmp_ctx;
1805
1806          /* dri2_dpy->core->bindContext failed. We cannot tell for sure why, but
1807           * setting the error to EGL_BAD_MATCH is surely better than leaving it
1808           * as EGL_SUCCESS.
1809           */
1810          egl_error = EGL_BAD_MATCH;
1811
1812          /* undo the previous _eglBindContext */
1813          _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &tmp_dsurf, &tmp_rsurf);
1814          assert(&dri2_ctx->base == ctx &&
1815                 tmp_dsurf == dsurf &&
1816                 tmp_rsurf == rsurf);
1817
1818          _eglPutSurface(dsurf);
1819          _eglPutSurface(rsurf);
1820          _eglPutContext(ctx);
1821
1822          _eglPutSurface(old_dsurf);
1823          _eglPutSurface(old_rsurf);
1824          _eglPutContext(old_ctx);
1825
1826          ddraw = (old_dsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_dsurf) : NULL;
1827          rdraw = (old_rsurf) ? dri2_dpy->vtbl->get_dri_drawable(old_rsurf) : NULL;
1828          cctx = (old_ctx) ? dri2_egl_context(old_ctx)->dri_context : NULL;
1829
1830          /* undo the previous dri2_dpy->core->unbindContext */
1831          if (dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
1832             if (old_dsurf && _eglSurfaceInSharedBufferMode(old_dsurf) &&
1833                 old_dri2_dpy->vtbl->set_shared_buffer_mode) {
1834                old_dri2_dpy->vtbl->set_shared_buffer_mode(old_disp, old_dsurf, true);
1835             }
1836
1837             return _eglError(egl_error, "eglMakeCurrent");
1838          }
1839
1840          /* We cannot restore the same state as it was before calling
1841           * eglMakeCurrent() and the spec isn't clear about what to do. We
1842           * can prevent EGL from calling into the DRI driver with no DRI
1843           * context bound.
1844           */
1845          dsurf = rsurf = NULL;
1846          ctx = NULL;
1847
1848          _eglBindContext(ctx, dsurf, rsurf, &tmp_ctx, &tmp_dsurf, &tmp_rsurf);
1849          assert(tmp_ctx == old_ctx && tmp_dsurf == old_dsurf &&
1850                 tmp_rsurf == old_rsurf);
1851
1852          _eglLog(_EGL_WARNING, "DRI2: failed to rebind the previous context");
1853       } else {
1854          /* dri2_dpy->core->bindContext succeeded, so take a reference on the
1855           * dri2_dpy. This prevents dri2_dpy from being reinitialized when a
1856           * EGLDisplay is terminated and then initialized again while a
1857           * context is still bound. See dri2_intitialize() for a more in depth
1858           * explanation. */
1859          dri2_dpy->ref_count++;
1860       }
1861    }
1862
1863    dri2_destroy_surface(disp, old_dsurf);
1864    dri2_destroy_surface(disp, old_rsurf);
1865
1866    if (old_ctx) {
1867       dri2_destroy_context(disp, old_ctx);
1868       dri2_display_release(old_disp);
1869    }
1870
1871    if (egl_error != EGL_SUCCESS)
1872       return _eglError(egl_error, "eglMakeCurrent");
1873
1874    if (dsurf && _eglSurfaceHasMutableRenderBuffer(dsurf) &&
1875        dri2_dpy->vtbl->set_shared_buffer_mode) {
1876       /* Always update the shared buffer mode. This is obviously needed when
1877        * the active EGL_RENDER_BUFFER is EGL_SINGLE_BUFFER. When
1878        * EGL_RENDER_BUFFER is EGL_BACK_BUFFER, the update protects us in the
1879        * case where external non-EGL API may have changed window's shared
1880        * buffer mode since we last saw it.
1881        */
1882       bool mode = (dsurf->ActiveRenderBuffer == EGL_SINGLE_BUFFER);
1883       dri2_dpy->vtbl->set_shared_buffer_mode(disp, dsurf, mode);
1884    }
1885
1886    return EGL_TRUE;
1887 }
1888
1889 __DRIdrawable *
1890 dri2_surface_get_dri_drawable(_EGLSurface *surf)
1891 {
1892    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1893
1894    return dri2_surf->dri_drawable;
1895 }
1896
1897 /*
1898  * Called from eglGetProcAddress() via drv->GetProcAddress().
1899  */
1900 static _EGLProc
1901 dri2_get_proc_address(const _EGLDriver *drv, const char *procname)
1902 {
1903    return _glapi_get_proc_address(procname);
1904 }
1905
1906 static _EGLSurface*
1907 dri2_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
1908                            void *native_window, const EGLint *attrib_list)
1909 {
1910    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1911    return dri2_dpy->vtbl->create_window_surface(disp, conf, native_window,
1912                                                 attrib_list);
1913 }
1914
1915 static _EGLSurface*
1916 dri2_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
1917                            void *native_pixmap, const EGLint *attrib_list)
1918 {
1919    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1920    if (!dri2_dpy->vtbl->create_pixmap_surface)
1921       return NULL;
1922    return dri2_dpy->vtbl->create_pixmap_surface(disp, conf, native_pixmap,
1923                                                 attrib_list);
1924 }
1925
1926 static _EGLSurface*
1927 dri2_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
1928                             const EGLint *attrib_list)
1929 {
1930    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1931    if (!dri2_dpy->vtbl->create_pbuffer_surface)
1932       return NULL;
1933    return dri2_dpy->vtbl->create_pbuffer_surface(disp, conf, attrib_list);
1934 }
1935
1936 static EGLBoolean
1937 dri2_swap_interval(_EGLDisplay *disp, _EGLSurface *surf, EGLint interval)
1938 {
1939    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1940    if (!dri2_dpy->vtbl->swap_interval)
1941       return EGL_TRUE;
1942    return dri2_dpy->vtbl->swap_interval(disp, surf, interval);
1943 }
1944
1945 /**
1946  * Asks the client API to flush any rendering to the drawable so that we can
1947  * do our swapbuffers.
1948  */
1949 void
1950 dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw)
1951 {
1952    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1953    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(draw);
1954
1955    if (dri2_dpy->flush) {
1956       if (dri2_dpy->flush->base.version >= 4) {
1957          /* We know there's a current context because:
1958           *
1959           *     "If surface is not bound to the calling thread’s current
1960           *      context, an EGL_BAD_SURFACE error is generated."
1961          */
1962          _EGLContext *ctx = _eglGetCurrentContext();
1963          struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
1964
1965          /* From the EGL 1.4 spec (page 52):
1966           *
1967           *     "The contents of ancillary buffers are always undefined
1968           *      after calling eglSwapBuffers."
1969           */
1970          dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context,
1971                                            dri_drawable,
1972                                            __DRI2_FLUSH_DRAWABLE |
1973                                            __DRI2_FLUSH_INVALIDATE_ANCILLARY,
1974                                            __DRI2_THROTTLE_SWAPBUFFER);
1975       } else {
1976          dri2_dpy->flush->flush(dri_drawable);
1977       }
1978    }
1979 }
1980
1981 static EGLBoolean
1982 dri2_swap_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
1983 {
1984    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1985    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
1986    _EGLContext *ctx = _eglGetCurrentContext();
1987    EGLBoolean ret;
1988
1989    if (ctx && surf)
1990       dri2_surf_update_fence_fd(ctx, disp, surf);
1991    ret = dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
1992
1993    /* SwapBuffers marks the end of the frame; reset the damage region for
1994     * use again next time.
1995     */
1996    if (ret && dri2_dpy->buffer_damage &&
1997        dri2_dpy->buffer_damage->set_damage_region)
1998       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
1999
2000    return ret;
2001 }
2002
2003 static EGLBoolean
2004 dri2_swap_buffers_with_damage(const _EGLDriver *drv, _EGLDisplay *disp,
2005                               _EGLSurface *surf,
2006                               const EGLint *rects, EGLint n_rects)
2007 {
2008    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2009    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2010    _EGLContext *ctx = _eglGetCurrentContext();
2011    EGLBoolean ret;
2012
2013    if (ctx && surf)
2014       dri2_surf_update_fence_fd(ctx, disp, surf);
2015    if (dri2_dpy->vtbl->swap_buffers_with_damage)
2016       ret = dri2_dpy->vtbl->swap_buffers_with_damage(drv, disp, surf,
2017                                                      rects, n_rects);
2018    else
2019       ret = dri2_dpy->vtbl->swap_buffers(drv, disp, surf);
2020
2021    /* SwapBuffers marks the end of the frame; reset the damage region for
2022     * use again next time.
2023     */
2024    if (ret && dri2_dpy->buffer_damage &&
2025        dri2_dpy->buffer_damage->set_damage_region)
2026       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2027
2028    return ret;
2029 }
2030
2031 static EGLBoolean
2032 dri2_swap_buffers_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2033                          EGLint numRects, const EGLint *rects)
2034 {
2035    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2036    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2037    EGLBoolean ret;
2038
2039    if (!dri2_dpy->vtbl->swap_buffers_region)
2040       return EGL_FALSE;
2041    ret = dri2_dpy->vtbl->swap_buffers_region(drv, disp, surf, numRects, rects);
2042
2043    /* SwapBuffers marks the end of the frame; reset the damage region for
2044     * use again next time.
2045     */
2046    if (ret && dri2_dpy->buffer_damage &&
2047        dri2_dpy->buffer_damage->set_damage_region)
2048       dri2_dpy->buffer_damage->set_damage_region(dri_drawable, 0, NULL);
2049
2050    return ret;
2051 }
2052
2053 static EGLBoolean
2054 dri2_set_damage_region(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2055                        EGLint *rects, EGLint n_rects)
2056 {
2057    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2058    __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2059
2060    if (!dri2_dpy->buffer_damage || !dri2_dpy->buffer_damage->set_damage_region)
2061       return EGL_FALSE;
2062
2063    dri2_dpy->buffer_damage->set_damage_region(drawable, n_rects, rects);
2064    return EGL_TRUE;
2065 }
2066
2067 static EGLBoolean
2068 dri2_post_sub_buffer(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2069                      EGLint x, EGLint y, EGLint width, EGLint height)
2070 {
2071    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2072    if (!dri2_dpy->vtbl->post_sub_buffer)
2073       return EGL_FALSE;
2074    return dri2_dpy->vtbl->post_sub_buffer(drv, disp, surf, x, y, width, height);
2075 }
2076
2077 static EGLBoolean
2078 dri2_copy_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
2079                   void *native_pixmap_target)
2080 {
2081    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2082    if (!dri2_dpy->vtbl->copy_buffers)
2083       return _eglError(EGL_BAD_NATIVE_PIXMAP, "no support for native pixmaps");
2084    return dri2_dpy->vtbl->copy_buffers(drv, disp, surf, native_pixmap_target);
2085 }
2086
2087 static EGLint
2088 dri2_query_buffer_age(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
2089 {
2090    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2091    if (!dri2_dpy->vtbl->query_buffer_age)
2092       return 0;
2093    return dri2_dpy->vtbl->query_buffer_age(drv, disp, surf);
2094 }
2095
2096 static EGLBoolean
2097 dri2_wait_client(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
2098 {
2099    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2100    _EGLSurface *surf = ctx->DrawSurface;
2101    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2102
2103    (void) drv;
2104
2105    /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
2106     * we need to copy fake to real here.*/
2107
2108    if (dri2_dpy->flush != NULL)
2109       dri2_dpy->flush->flush(dri_drawable);
2110
2111    return EGL_TRUE;
2112 }
2113
2114 static EGLBoolean
2115 dri2_wait_native(const _EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
2116 {
2117    (void) drv;
2118    (void) disp;
2119
2120    if (engine != EGL_CORE_NATIVE_ENGINE)
2121       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
2122    /* glXWaitX(); */
2123
2124    return EGL_TRUE;
2125 }
2126
2127 static EGLBoolean
2128 dri2_bind_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2129 {
2130    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2131    struct dri2_egl_context *dri2_ctx;
2132    _EGLContext *ctx;
2133    GLint format, target;
2134    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2135
2136    ctx = _eglGetCurrentContext();
2137    dri2_ctx = dri2_egl_context(ctx);
2138
2139    if (!_eglBindTexImage(disp, surf, buffer))
2140       return EGL_FALSE;
2141
2142    switch (surf->TextureFormat) {
2143    case EGL_TEXTURE_RGB:
2144       format = __DRI_TEXTURE_FORMAT_RGB;
2145       break;
2146    case EGL_TEXTURE_RGBA:
2147       format = __DRI_TEXTURE_FORMAT_RGBA;
2148       break;
2149    default:
2150       assert(!"Unexpected texture format in dri2_bind_tex_image()");
2151       format = __DRI_TEXTURE_FORMAT_RGBA;
2152    }
2153
2154    switch (surf->TextureTarget) {
2155    case EGL_TEXTURE_2D:
2156       target = GL_TEXTURE_2D;
2157       break;
2158    default:
2159       target = GL_TEXTURE_2D;
2160       assert(!"Unexpected texture target in dri2_bind_tex_image()");
2161    }
2162
2163    dri2_dpy->tex_buffer->setTexBuffer2(dri2_ctx->dri_context,
2164                                        target, format,
2165                                        dri_drawable);
2166
2167    return EGL_TRUE;
2168 }
2169
2170 static EGLBoolean
2171 dri2_release_tex_image(_EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
2172 {
2173    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2174    struct dri2_egl_context *dri2_ctx;
2175    _EGLContext *ctx;
2176    GLint  target;
2177    __DRIdrawable *dri_drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
2178
2179    ctx = _eglGetCurrentContext();
2180    dri2_ctx = dri2_egl_context(ctx);
2181
2182    if (!_eglReleaseTexImage(disp, surf, buffer))
2183       return EGL_FALSE;
2184
2185    switch (surf->TextureTarget) {
2186    case EGL_TEXTURE_2D:
2187       target = GL_TEXTURE_2D;
2188       break;
2189    default:
2190       assert(!"missing texture target");
2191    }
2192
2193    if (dri2_dpy->tex_buffer->base.version >= 3 &&
2194        dri2_dpy->tex_buffer->releaseTexBuffer != NULL) {
2195       dri2_dpy->tex_buffer->releaseTexBuffer(dri2_ctx->dri_context,
2196                                              target, dri_drawable);
2197    }
2198
2199    return EGL_TRUE;
2200 }
2201
2202 static _EGLImage*
2203 dri2_create_image(const _EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx,
2204                   EGLenum target, EGLClientBuffer buffer,
2205                   const EGLint *attr_list)
2206 {
2207    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2208    return dri2_dpy->vtbl->create_image(drv, disp, ctx, target, buffer,
2209                                        attr_list);
2210 }
2211
2212 static _EGLImage *
2213 dri2_create_image_from_dri(_EGLDisplay *disp, __DRIimage *dri_image)
2214 {
2215    struct dri2_egl_image *dri2_img;
2216
2217    if (dri_image == NULL) {
2218       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2219       return NULL;
2220    }
2221
2222    dri2_img = malloc(sizeof *dri2_img);
2223    if (!dri2_img) {
2224       _eglError(EGL_BAD_ALLOC, "dri2_create_image");
2225       return NULL;
2226    }
2227
2228    _eglInitImage(&dri2_img->base, disp);
2229
2230    dri2_img->dri_image = dri_image;
2231
2232    return &dri2_img->base;
2233 }
2234
2235 /**
2236  * Translate a DRI Image extension error code into an EGL error code.
2237  */
2238 static EGLint
2239 egl_error_from_dri_image_error(int dri_error)
2240 {
2241    switch (dri_error) {
2242    case __DRI_IMAGE_ERROR_SUCCESS:
2243       return EGL_SUCCESS;
2244    case __DRI_IMAGE_ERROR_BAD_ALLOC:
2245       return EGL_BAD_ALLOC;
2246    case __DRI_IMAGE_ERROR_BAD_MATCH:
2247       return EGL_BAD_MATCH;
2248    case __DRI_IMAGE_ERROR_BAD_PARAMETER:
2249       return EGL_BAD_PARAMETER;
2250    case __DRI_IMAGE_ERROR_BAD_ACCESS:
2251       return EGL_BAD_ACCESS;
2252    default:
2253       assert(!"unknown dri_error code");
2254       return EGL_BAD_ALLOC;
2255    }
2256 }
2257
2258 static _EGLImage *
2259 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
2260                                    EGLClientBuffer buffer,
2261                                    const EGLint *attr_list)
2262 {
2263    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2264    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2265    GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
2266    __DRIimage *dri_image;
2267
2268    if (renderbuffer == 0) {
2269       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2270       return EGL_NO_IMAGE_KHR;
2271    }
2272
2273    if (!disp->Extensions.KHR_gl_renderbuffer_image) {
2274       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2275       return EGL_NO_IMAGE_KHR;
2276    }
2277
2278    if (dri2_dpy->image->base.version >= 17 &&
2279        dri2_dpy->image->createImageFromRenderbuffer2) {
2280       unsigned error = ~0;
2281
2282       dri_image = dri2_dpy->image->createImageFromRenderbuffer2(
2283                dri2_ctx->dri_context, renderbuffer, NULL, &error);
2284
2285       assert(!!dri_image == (error == __DRI_IMAGE_ERROR_SUCCESS));
2286
2287       if (!dri_image) {
2288          _eglError(egl_error_from_dri_image_error(error), "dri2_create_image_khr");
2289          return EGL_NO_IMAGE_KHR;
2290       }
2291    } else {
2292       dri_image = dri2_dpy->image->createImageFromRenderbuffer(
2293                dri2_ctx->dri_context, renderbuffer, NULL);
2294       if (!dri_image) {
2295          _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2296          return EGL_NO_IMAGE_KHR;
2297       }
2298    }
2299
2300    return dri2_create_image_from_dri(disp, dri_image);
2301 }
2302
2303 #ifdef HAVE_WAYLAND_PLATFORM
2304
2305 /* This structure describes how a wl_buffer maps to one or more
2306  * __DRIimages.  A wl_drm_buffer stores the wl_drm format code and the
2307  * offsets and strides of the planes in the buffer.  This table maps a
2308  * wl_drm format code to a description of the planes in the buffer
2309  * that lets us create a __DRIimage for each of the planes. */
2310
2311 static const struct wl_drm_components_descriptor {
2312    uint32_t dri_components;
2313    EGLint components;
2314    int nplanes;
2315 } wl_drm_components[] = {
2316    { __DRI_IMAGE_COMPONENTS_RGB, EGL_TEXTURE_RGB, 1 },
2317    { __DRI_IMAGE_COMPONENTS_RGBA, EGL_TEXTURE_RGBA, 1 },
2318    { __DRI_IMAGE_COMPONENTS_Y_U_V, EGL_TEXTURE_Y_U_V_WL, 3 },
2319    { __DRI_IMAGE_COMPONENTS_Y_UV, EGL_TEXTURE_Y_UV_WL, 2 },
2320    { __DRI_IMAGE_COMPONENTS_Y_XUXV, EGL_TEXTURE_Y_XUXV_WL, 2 },
2321 };
2322
2323 static _EGLImage *
2324 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2325                                     EGLClientBuffer _buffer,
2326                                     const EGLint *attr_list)
2327 {
2328    struct wl_drm_buffer *buffer;
2329    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2330    const struct wl_drm_components_descriptor *f;
2331    __DRIimage *dri_image;
2332    _EGLImageAttribs attrs;
2333    int32_t plane;
2334
2335    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
2336                                    (struct wl_resource *) _buffer);
2337    if (!buffer)
2338        return NULL;
2339
2340    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2341       return NULL;
2342
2343    plane = attrs.PlaneWL;
2344    f = buffer->driver_format;
2345    if (plane < 0 || plane >= f->nplanes) {
2346       _eglError(EGL_BAD_PARAMETER,
2347                 "dri2_create_image_wayland_wl_buffer (plane out of bounds)");
2348       return NULL;
2349    }
2350
2351    dri_image = dri2_dpy->image->fromPlanar(buffer->driver_buffer, plane, NULL);
2352    if (dri_image == NULL && plane == 0)
2353       dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
2354    if (dri_image == NULL) {
2355       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
2356       return NULL;
2357    }
2358
2359    return dri2_create_image_from_dri(disp, dri_image);
2360 }
2361 #endif
2362
2363 static EGLBoolean
2364 dri2_get_sync_values_chromium(_EGLDisplay *disp, _EGLSurface *surf,
2365                               EGLuint64KHR *ust, EGLuint64KHR *msc,
2366                               EGLuint64KHR *sbc)
2367 {
2368    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2369    if (!dri2_dpy->vtbl->get_sync_values)
2370       return EGL_FALSE;
2371    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
2372 }
2373
2374 /**
2375  * Set the error code after a call to
2376  * dri2_egl_image::dri_image::createImageFromTexture.
2377  */
2378 static void
2379 dri2_create_image_khr_texture_error(int dri_error)
2380 {
2381    EGLint egl_error = egl_error_from_dri_image_error(dri_error);
2382
2383    if (egl_error != EGL_SUCCESS)
2384       _eglError(egl_error, "dri2_create_image_khr_texture");
2385 }
2386
2387 static _EGLImage *
2388 dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
2389                                    EGLenum target,
2390                                    EGLClientBuffer buffer,
2391                                    const EGLint *attr_list)
2392 {
2393    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2394    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
2395    struct dri2_egl_image *dri2_img;
2396    GLuint texture = (GLuint) (uintptr_t) buffer;
2397    _EGLImageAttribs attrs;
2398    GLuint depth;
2399    GLenum gl_target;
2400    unsigned error;
2401
2402    if (texture == 0) {
2403       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2404       return EGL_NO_IMAGE_KHR;
2405    }
2406
2407    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2408       return EGL_NO_IMAGE_KHR;
2409
2410    switch (target) {
2411    case EGL_GL_TEXTURE_2D_KHR:
2412       if (!disp->Extensions.KHR_gl_texture_2D_image) {
2413          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2414          return EGL_NO_IMAGE_KHR;
2415       }
2416       depth = 0;
2417       gl_target = GL_TEXTURE_2D;
2418       break;
2419    case EGL_GL_TEXTURE_3D_KHR:
2420       if (!disp->Extensions.KHR_gl_texture_3D_image) {
2421          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2422          return EGL_NO_IMAGE_KHR;
2423       }
2424
2425       depth = attrs.GLTextureZOffset;
2426       gl_target = GL_TEXTURE_3D;
2427       break;
2428    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
2429    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
2430    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
2431    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
2432    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
2433    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
2434       if (!disp->Extensions.KHR_gl_texture_cubemap_image) {
2435          _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
2436          return EGL_NO_IMAGE_KHR;
2437       }
2438
2439       depth = target - EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
2440       gl_target = GL_TEXTURE_CUBE_MAP;
2441       break;
2442    default:
2443       unreachable("Unexpected target in dri2_create_image_khr_texture()");
2444       return EGL_NO_IMAGE_KHR;
2445    }
2446
2447    dri2_img = malloc(sizeof *dri2_img);
2448    if (!dri2_img) {
2449       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2450       return EGL_NO_IMAGE_KHR;
2451    }
2452
2453    _eglInitImage(&dri2_img->base, disp);
2454
2455    dri2_img->dri_image =
2456       dri2_dpy->image->createImageFromTexture(dri2_ctx->dri_context,
2457                                               gl_target,
2458                                               texture,
2459                                               depth,
2460                                               attrs.GLTextureLevel,
2461                                               &error,
2462                                               dri2_img);
2463    dri2_create_image_khr_texture_error(error);
2464
2465    if (!dri2_img->dri_image) {
2466       free(dri2_img);
2467       return EGL_NO_IMAGE_KHR;
2468    }
2469    return &dri2_img->base;
2470 }
2471
2472 static EGLBoolean
2473 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
2474                    EGLint attribute, EGLint *value)
2475 {
2476    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2477    if (!dri2_dpy->vtbl->query_surface)
2478       return _eglQuerySurface(disp, surf, attribute, value);
2479    return dri2_dpy->vtbl->query_surface(disp, surf, attribute, value);
2480 }
2481
2482 static struct wl_buffer*
2483 dri2_create_wayland_buffer_from_image(const _EGLDriver *drv, _EGLDisplay *disp,
2484                                       _EGLImage *img)
2485 {
2486    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2487    if (!dri2_dpy->vtbl->create_wayland_buffer_from_image)
2488       return NULL;
2489    return dri2_dpy->vtbl->create_wayland_buffer_from_image(drv, disp, img);
2490 }
2491
2492 #ifdef HAVE_LIBDRM
2493 static _EGLImage *
2494 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
2495                                   EGLClientBuffer buffer, const EGLint *attr_list)
2496 {
2497    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2498    EGLint format, name, pitch;
2499    _EGLImageAttribs attrs;
2500    __DRIimage *dri_image;
2501
2502    name = (EGLint) (uintptr_t) buffer;
2503
2504    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2505       return NULL;
2506
2507    if (attrs.Width <= 0 || attrs.Height <= 0 ||
2508        attrs.DRMBufferStrideMESA <= 0) {
2509       _eglError(EGL_BAD_PARAMETER,
2510                 "bad width, height or stride");
2511       return NULL;
2512    }
2513
2514    switch (attrs.DRMBufferFormatMESA) {
2515    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2516       format = __DRI_IMAGE_FORMAT_ARGB8888;
2517       pitch = attrs.DRMBufferStrideMESA;
2518       break;
2519    default:
2520       _eglError(EGL_BAD_PARAMETER,
2521                 "dri2_create_image_khr: unsupported pixmap depth");
2522       return NULL;
2523    }
2524
2525    dri_image =
2526       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
2527                                            attrs.Width,
2528                                            attrs.Height,
2529                                            format,
2530                                            name,
2531                                            pitch,
2532                                            NULL);
2533
2534    return dri2_create_image_from_dri(disp, dri_image);
2535 }
2536
2537 static EGLBoolean
2538 dri2_check_dma_buf_attribs(const _EGLImageAttribs *attrs)
2539 {
2540    /**
2541      * The spec says:
2542      *
2543      * "Required attributes and their values are as follows:
2544      *
2545      *  * EGL_WIDTH & EGL_HEIGHT: The logical dimensions of the buffer in pixels
2546      *
2547      *  * EGL_LINUX_DRM_FOURCC_EXT: The pixel format of the buffer, as specified
2548      *    by drm_fourcc.h and used as the pixel_format parameter of the
2549      *    drm_mode_fb_cmd2 ioctl."
2550      *
2551      * and
2552      *
2553      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2554      *    incomplete, EGL_BAD_PARAMETER is generated."
2555      */
2556    if (attrs->Width <= 0 || attrs->Height <= 0 ||
2557        !attrs->DMABufFourCC.IsPresent)
2558       return _eglError(EGL_BAD_PARAMETER, "attribute(s) missing");
2559
2560    /**
2561     * Also:
2562     *
2563     * "If <target> is EGL_LINUX_DMA_BUF_EXT and one or more of the values
2564     *  specified for a plane's pitch or offset isn't supported by EGL,
2565     *  EGL_BAD_ACCESS is generated."
2566     */
2567    for (unsigned i = 0; i < ARRAY_SIZE(attrs->DMABufPlanePitches); ++i) {
2568       if (attrs->DMABufPlanePitches[i].IsPresent &&
2569           attrs->DMABufPlanePitches[i].Value <= 0)
2570          return _eglError(EGL_BAD_ACCESS, "invalid pitch");
2571    }
2572
2573    /**
2574     * If <target> is EGL_LINUX_DMA_BUF_EXT, both or neither of the following
2575     * attribute values may be given.
2576     *
2577     * This is referring to EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT and
2578     * EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT, and the same for other planes.
2579     */
2580    for (unsigned i = 0; i < DMA_BUF_MAX_PLANES; ++i) {
2581       if (attrs->DMABufPlaneModifiersLo[i].IsPresent !=
2582           attrs->DMABufPlaneModifiersHi[i].IsPresent)
2583          return _eglError(EGL_BAD_PARAMETER, "modifier attribute lo or hi missing");
2584    }
2585
2586    /* Although the EGL_EXT_image_dma_buf_import_modifiers spec doesn't
2587     * mandate it, we only accept the same modifier across all planes. */
2588    for (unsigned i = 1; i < DMA_BUF_MAX_PLANES; ++i) {
2589       if (attrs->DMABufPlaneFds[i].IsPresent) {
2590          if ((attrs->DMABufPlaneModifiersLo[0].IsPresent !=
2591                attrs->DMABufPlaneModifiersLo[i].IsPresent) ||
2592              (attrs->DMABufPlaneModifiersLo[0].Value !=
2593                attrs->DMABufPlaneModifiersLo[i].Value) ||
2594              (attrs->DMABufPlaneModifiersHi[0].Value !=
2595                attrs->DMABufPlaneModifiersHi[i].Value))
2596             return _eglError(EGL_BAD_PARAMETER, "modifier attributes not equal");
2597       }
2598    }
2599
2600    return EGL_TRUE;
2601 }
2602
2603 /* Returns the total number of planes for the format or zero if it isn't a
2604  * valid fourcc format.
2605  */
2606 static unsigned
2607 dri2_num_fourcc_format_planes(EGLint format)
2608 {
2609    switch (format) {
2610    case DRM_FORMAT_R8:
2611    case DRM_FORMAT_RG88:
2612    case DRM_FORMAT_GR88:
2613    case DRM_FORMAT_R16:
2614    case DRM_FORMAT_GR1616:
2615    case DRM_FORMAT_RGB332:
2616    case DRM_FORMAT_BGR233:
2617    case DRM_FORMAT_XRGB4444:
2618    case DRM_FORMAT_XBGR4444:
2619    case DRM_FORMAT_RGBX4444:
2620    case DRM_FORMAT_BGRX4444:
2621    case DRM_FORMAT_ARGB4444:
2622    case DRM_FORMAT_ABGR4444:
2623    case DRM_FORMAT_RGBA4444:
2624    case DRM_FORMAT_BGRA4444:
2625    case DRM_FORMAT_XRGB1555:
2626    case DRM_FORMAT_XBGR1555:
2627    case DRM_FORMAT_RGBX5551:
2628    case DRM_FORMAT_BGRX5551:
2629    case DRM_FORMAT_ARGB1555:
2630    case DRM_FORMAT_ABGR1555:
2631    case DRM_FORMAT_RGBA5551:
2632    case DRM_FORMAT_BGRA5551:
2633    case DRM_FORMAT_RGB565:
2634    case DRM_FORMAT_BGR565:
2635    case DRM_FORMAT_RGB888:
2636    case DRM_FORMAT_BGR888:
2637    case DRM_FORMAT_XRGB8888:
2638    case DRM_FORMAT_XBGR8888:
2639    case DRM_FORMAT_RGBX8888:
2640    case DRM_FORMAT_BGRX8888:
2641    case DRM_FORMAT_ARGB8888:
2642    case DRM_FORMAT_ABGR8888:
2643    case DRM_FORMAT_RGBA8888:
2644    case DRM_FORMAT_BGRA8888:
2645    case DRM_FORMAT_XRGB2101010:
2646    case DRM_FORMAT_XBGR2101010:
2647    case DRM_FORMAT_RGBX1010102:
2648    case DRM_FORMAT_BGRX1010102:
2649    case DRM_FORMAT_ARGB2101010:
2650    case DRM_FORMAT_ABGR2101010:
2651    case DRM_FORMAT_RGBA1010102:
2652    case DRM_FORMAT_BGRA1010102:
2653    case DRM_FORMAT_XBGR16161616F:
2654    case DRM_FORMAT_ABGR16161616F:
2655    case DRM_FORMAT_YUYV:
2656    case DRM_FORMAT_YVYU:
2657    case DRM_FORMAT_UYVY:
2658    case DRM_FORMAT_VYUY:
2659    case DRM_FORMAT_AYUV:
2660    case DRM_FORMAT_XYUV8888:
2661       return 1;
2662
2663    case DRM_FORMAT_NV12:
2664    case DRM_FORMAT_NV21:
2665    case DRM_FORMAT_NV16:
2666    case DRM_FORMAT_NV61:
2667    case DRM_FORMAT_P010:
2668    case DRM_FORMAT_P012:
2669    case DRM_FORMAT_P016:
2670       return 2;
2671
2672    case DRM_FORMAT_YUV410:
2673    case DRM_FORMAT_YVU410:
2674    case DRM_FORMAT_YUV411:
2675    case DRM_FORMAT_YVU411:
2676    case DRM_FORMAT_YUV420:
2677    case DRM_FORMAT_YVU420:
2678    case DRM_FORMAT_YUV422:
2679    case DRM_FORMAT_YVU422:
2680    case DRM_FORMAT_YUV444:
2681    case DRM_FORMAT_YVU444:
2682       return 3;
2683
2684    default:
2685       return 0;
2686    }
2687 }
2688
2689 /* Returns the total number of file descriptors. Zero indicates an error. */
2690 static unsigned
2691 dri2_check_dma_buf_format(const _EGLImageAttribs *attrs)
2692 {
2693    unsigned plane_n = dri2_num_fourcc_format_planes(attrs->DMABufFourCC.Value);
2694    if (plane_n == 0) {
2695       _eglError(EGL_BAD_MATCH, "unknown drm fourcc format");
2696       return 0;
2697    }
2698
2699    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; i++) {
2700       /**
2701        * The modifiers extension spec says:
2702        *
2703        * "Modifiers may modify any attribute of a buffer import, including
2704        *  but not limited to adding extra planes to a format which
2705        *  otherwise does not have those planes. As an example, a modifier
2706        *  may add a plane for an external compression buffer to a
2707        *  single-plane format. The exact meaning and effect of any
2708        *  modifier is canonically defined by drm_fourcc.h, not as part of
2709        *  this extension."
2710        */
2711       if (attrs->DMABufPlaneModifiersLo[i].IsPresent &&
2712           attrs->DMABufPlaneModifiersHi[i].IsPresent) {
2713          plane_n = i + 1;
2714       }
2715    }
2716
2717    /**
2718      * The spec says:
2719      *
2720      * "* If <target> is EGL_LINUX_DMA_BUF_EXT, and the list of attributes is
2721      *    incomplete, EGL_BAD_PARAMETER is generated."
2722      */
2723    for (unsigned i = 0; i < plane_n; ++i) {
2724       if (!attrs->DMABufPlaneFds[i].IsPresent ||
2725           !attrs->DMABufPlaneOffsets[i].IsPresent ||
2726           !attrs->DMABufPlanePitches[i].IsPresent) {
2727          _eglError(EGL_BAD_PARAMETER, "plane attribute(s) missing");
2728          return 0;
2729       }
2730    }
2731
2732    /**
2733     * The spec also says:
2734     *
2735     * "If <target> is EGL_LINUX_DMA_BUF_EXT, and the EGL_LINUX_DRM_FOURCC_EXT
2736     *  attribute indicates a single-plane format, EGL_BAD_ATTRIBUTE is
2737     *  generated if any of the EGL_DMA_BUF_PLANE1_* or EGL_DMA_BUF_PLANE2_*
2738     *  or EGL_DMA_BUF_PLANE3_* attributes are specified."
2739     */
2740    for (unsigned i = plane_n; i < DMA_BUF_MAX_PLANES; ++i) {
2741       if (attrs->DMABufPlaneFds[i].IsPresent ||
2742           attrs->DMABufPlaneOffsets[i].IsPresent ||
2743           attrs->DMABufPlanePitches[i].IsPresent) {
2744          _eglError(EGL_BAD_ATTRIBUTE, "too many plane attributes");
2745          return 0;
2746       }
2747    }
2748
2749    return plane_n;
2750 }
2751
2752 static EGLBoolean
2753 dri2_query_dma_buf_formats(const _EGLDriver *drv, _EGLDisplay *disp,
2754                             EGLint max, EGLint *formats, EGLint *count)
2755 {
2756    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2757    if (max < 0 || (max > 0 && formats == NULL))
2758       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2759
2760    if (dri2_dpy->image->base.version < 15 ||
2761        dri2_dpy->image->queryDmaBufFormats == NULL)
2762       return EGL_FALSE;
2763
2764    if (!dri2_dpy->image->queryDmaBufFormats(dri2_dpy->dri_screen, max,
2765                                             formats, count))
2766       return EGL_FALSE;
2767
2768    if (max > 0) {
2769       /* Assert that all of the formats returned are actually fourcc formats.
2770        * Some day, if we want the internal interface function to be able to
2771        * return the fake fourcc formats defined in dri_interface.h, we'll have
2772        * to do something more clever here to pair the list down to just real
2773        * fourcc formats so that we don't leak the fake internal ones.
2774        */
2775       for (int i = 0; i < *count; i++) {
2776          assert(dri2_num_fourcc_format_planes(formats[i]) > 0);
2777       }
2778    }
2779
2780    return EGL_TRUE;
2781 }
2782
2783 static EGLBoolean
2784 dri2_query_dma_buf_modifiers(const _EGLDriver *drv, _EGLDisplay *disp, EGLint format,
2785                              EGLint max, EGLuint64KHR *modifiers,
2786                              EGLBoolean *external_only, EGLint *count)
2787 {
2788    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2789
2790    if (dri2_num_fourcc_format_planes(format) == 0)
2791       return _eglError(EGL_BAD_PARAMETER, "invalid fourcc format");
2792
2793    if (max < 0)
2794       return _eglError(EGL_BAD_PARAMETER, "invalid value for max count of formats");
2795
2796    if (max > 0 && modifiers == NULL)
2797       return _eglError(EGL_BAD_PARAMETER, "invalid modifiers array");
2798
2799    if (dri2_dpy->image->base.version < 15 ||
2800        dri2_dpy->image->queryDmaBufModifiers == NULL)
2801       return EGL_FALSE;
2802
2803    if (dri2_dpy->image->queryDmaBufModifiers(dri2_dpy->dri_screen, format,
2804                                              max, modifiers,
2805                                              (unsigned int *) external_only,
2806                                              count) == false)
2807       return _eglError(EGL_BAD_PARAMETER, "invalid format");
2808
2809    return EGL_TRUE;
2810 }
2811
2812 /**
2813  * The spec says:
2814  *
2815  * "If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT target, the
2816  *  EGL will take a reference to the dma_buf(s) which it will release at any
2817  *  time while the EGLDisplay is initialized. It is the responsibility of the
2818  *  application to close the dma_buf file descriptors."
2819  *
2820  * Therefore we must never close or otherwise modify the file descriptors.
2821  */
2822 _EGLImage *
2823 dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
2824                           EGLClientBuffer buffer, const EGLint *attr_list)
2825 {
2826    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2827    _EGLImage *res;
2828    _EGLImageAttribs attrs;
2829    __DRIimage *dri_image;
2830    unsigned num_fds;
2831    int fds[DMA_BUF_MAX_PLANES];
2832    int pitches[DMA_BUF_MAX_PLANES];
2833    int offsets[DMA_BUF_MAX_PLANES];
2834    uint64_t modifier;
2835    bool has_modifier = false;
2836    unsigned error;
2837
2838    /**
2839     * The spec says:
2840     *
2841     * ""* If <target> is EGL_LINUX_DMA_BUF_EXT and <buffer> is not NULL, the
2842     *     error EGL_BAD_PARAMETER is generated."
2843     */
2844    if (buffer != NULL) {
2845       _eglError(EGL_BAD_PARAMETER, "buffer not NULL");
2846       return NULL;
2847    }
2848
2849    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2850       return NULL;
2851
2852    if (!dri2_check_dma_buf_attribs(&attrs))
2853       return NULL;
2854
2855    num_fds = dri2_check_dma_buf_format(&attrs);
2856    if (!num_fds)
2857       return NULL;
2858
2859    for (unsigned i = 0; i < num_fds; ++i) {
2860       fds[i] = attrs.DMABufPlaneFds[i].Value;
2861       pitches[i] = attrs.DMABufPlanePitches[i].Value;
2862       offsets[i] = attrs.DMABufPlaneOffsets[i].Value;
2863    }
2864
2865    /* dri2_check_dma_buf_attribs ensures that the modifier, if available,
2866     * will be present in attrs.DMABufPlaneModifiersLo[0] and
2867     * attrs.DMABufPlaneModifiersHi[0] */
2868    if (attrs.DMABufPlaneModifiersLo[0].IsPresent) {
2869       modifier = combine_u32_into_u64(attrs.DMABufPlaneModifiersHi[0].Value,
2870                                       attrs.DMABufPlaneModifiersLo[0].Value);
2871       has_modifier = true;
2872    }
2873
2874    if (has_modifier) {
2875       if (dri2_dpy->image->base.version < 15 ||
2876           dri2_dpy->image->createImageFromDmaBufs2 == NULL) {
2877          _eglError(EGL_BAD_MATCH, "unsupported dma_buf format modifier");
2878          return EGL_NO_IMAGE_KHR;
2879       }
2880       dri_image =
2881          dri2_dpy->image->createImageFromDmaBufs2(dri2_dpy->dri_screen,
2882             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2883             modifier, fds, num_fds, pitches, offsets,
2884             attrs.DMABufYuvColorSpaceHint.Value,
2885             attrs.DMABufSampleRangeHint.Value,
2886             attrs.DMABufChromaHorizontalSiting.Value,
2887             attrs.DMABufChromaVerticalSiting.Value,
2888             &error,
2889             NULL);
2890    }
2891    else {
2892       dri_image =
2893          dri2_dpy->image->createImageFromDmaBufs(dri2_dpy->dri_screen,
2894             attrs.Width, attrs.Height, attrs.DMABufFourCC.Value,
2895             fds, num_fds, pitches, offsets,
2896             attrs.DMABufYuvColorSpaceHint.Value,
2897             attrs.DMABufSampleRangeHint.Value,
2898             attrs.DMABufChromaHorizontalSiting.Value,
2899             attrs.DMABufChromaVerticalSiting.Value,
2900             &error,
2901             NULL);
2902    }
2903    dri2_create_image_khr_texture_error(error);
2904
2905    if (!dri_image)
2906       return EGL_NO_IMAGE_KHR;
2907
2908    res = dri2_create_image_from_dri(disp, dri_image);
2909
2910    return res;
2911 }
2912 static _EGLImage *
2913 dri2_create_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
2914                            const EGLint *attr_list)
2915 {
2916    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2917    struct dri2_egl_image *dri2_img;
2918    _EGLImageAttribs attrs;
2919    unsigned int dri_use, valid_mask;
2920    int format;
2921
2922    (void) drv;
2923
2924    if (!attr_list) {
2925       _eglError(EGL_BAD_PARAMETER, __func__);
2926       return EGL_NO_IMAGE_KHR;
2927    }
2928
2929    if (!_eglParseImageAttribList(&attrs, disp, attr_list))
2930       return EGL_NO_IMAGE_KHR;
2931
2932    if (attrs.Width <= 0 || attrs.Height <= 0) {
2933       _eglError(EGL_BAD_PARAMETER, __func__);
2934       return EGL_NO_IMAGE_KHR;
2935    }
2936
2937    switch (attrs.DRMBufferFormatMESA) {
2938    case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
2939       format = __DRI_IMAGE_FORMAT_ARGB8888;
2940       break;
2941    default:
2942       _eglError(EGL_BAD_PARAMETER, __func__);
2943       return EGL_NO_IMAGE_KHR;
2944    }
2945
2946    valid_mask =
2947       EGL_DRM_BUFFER_USE_SCANOUT_MESA |
2948       EGL_DRM_BUFFER_USE_SHARE_MESA |
2949       EGL_DRM_BUFFER_USE_CURSOR_MESA;
2950    if (attrs.DRMBufferUseMESA & ~valid_mask) {
2951       _eglError(EGL_BAD_PARAMETER, __func__);
2952       return EGL_NO_IMAGE_KHR;
2953    }
2954
2955    dri_use = 0;
2956    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
2957       dri_use |= __DRI_IMAGE_USE_SHARE;
2958    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
2959       dri_use |= __DRI_IMAGE_USE_SCANOUT;
2960    if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
2961       dri_use |= __DRI_IMAGE_USE_CURSOR;
2962
2963    dri2_img = malloc(sizeof *dri2_img);
2964    if (!dri2_img) {
2965       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
2966       return EGL_NO_IMAGE_KHR;
2967    }
2968
2969    _eglInitImage(&dri2_img->base, disp);
2970
2971    dri2_img->dri_image =
2972       dri2_dpy->image->createImage(dri2_dpy->dri_screen,
2973                                    attrs.Width, attrs.Height,
2974                                    format, dri_use, dri2_img);
2975    if (dri2_img->dri_image == NULL) {
2976       free(dri2_img);
2977        _eglError(EGL_BAD_ALLOC, "dri2_create_drm_image_mesa");
2978       return EGL_NO_IMAGE_KHR;
2979    }
2980
2981    return &dri2_img->base;
2982 }
2983
2984 static EGLBoolean
2985 dri2_export_drm_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
2986                           EGLint *name, EGLint *handle, EGLint *stride)
2987 {
2988    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
2989    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
2990
2991    (void) drv;
2992
2993    if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
2994                                             __DRI_IMAGE_ATTRIB_NAME, name))
2995       return _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
2996
2997    if (handle)
2998       dri2_dpy->image->queryImage(dri2_img->dri_image,
2999                                   __DRI_IMAGE_ATTRIB_HANDLE, handle);
3000
3001    if (stride)
3002       dri2_dpy->image->queryImage(dri2_img->dri_image,
3003                                   __DRI_IMAGE_ATTRIB_STRIDE, stride);
3004
3005    return EGL_TRUE;
3006 }
3007
3008 /**
3009  * Checks if we can support EGL_MESA_image_dma_buf_export on this image.
3010
3011  * The spec provides a boolean return for the driver to reject exporting for
3012  * basically any reason, but doesn't specify any particular error cases.  For
3013  * now, we just fail if we don't have a DRM fourcc for the format.
3014  */
3015 static bool
3016 dri2_can_export_dma_buf_image(_EGLDisplay *disp, _EGLImage *img)
3017 {
3018    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3019    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3020    EGLint fourcc;
3021
3022    if (!dri2_dpy->image->queryImage(dri2_img->dri_image,
3023                                     __DRI_IMAGE_ATTRIB_FOURCC, &fourcc)) {
3024       return false;
3025    }
3026
3027    return true;
3028 }
3029
3030 static EGLBoolean
3031 dri2_export_dma_buf_image_query_mesa(const _EGLDriver *drv, _EGLDisplay *disp,
3032                                      _EGLImage *img,
3033                                      EGLint *fourcc, EGLint *nplanes,
3034                                      EGLuint64KHR *modifiers)
3035 {
3036    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3037    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3038    int num_planes;
3039
3040    (void) drv;
3041
3042    if (!dri2_can_export_dma_buf_image(disp, img))
3043       return EGL_FALSE;
3044
3045    dri2_dpy->image->queryImage(dri2_img->dri_image,
3046                                __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
3047    if (nplanes)
3048      *nplanes = num_planes;
3049
3050    if (fourcc)
3051       dri2_dpy->image->queryImage(dri2_img->dri_image,
3052                                   __DRI_IMAGE_ATTRIB_FOURCC, fourcc);
3053
3054    if (modifiers) {
3055       int mod_hi, mod_lo;
3056       uint64_t modifier = DRM_FORMAT_MOD_INVALID;
3057       bool query;
3058
3059       query = dri2_dpy->image->queryImage(dri2_img->dri_image,
3060                                           __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
3061                                           &mod_hi);
3062       query &= dri2_dpy->image->queryImage(dri2_img->dri_image,
3063                                            __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
3064                                            &mod_lo);
3065       if (query)
3066          modifier = combine_u32_into_u64 (mod_hi, mod_lo);
3067
3068       for (int i = 0; i < num_planes; i++)
3069         modifiers[i] = modifier;
3070    }
3071
3072    return EGL_TRUE;
3073 }
3074
3075 static EGLBoolean
3076 dri2_export_dma_buf_image_mesa(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
3077                                int *fds, EGLint *strides, EGLint *offsets)
3078 {
3079    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3080    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
3081    EGLint nplanes;
3082
3083    (void) drv;
3084
3085    if (!dri2_can_export_dma_buf_image(disp, img))
3086       return EGL_FALSE;
3087
3088    /* EGL_MESA_image_dma_buf_export spec says:
3089     *    "If the number of fds is less than the number of planes, then
3090     *    subsequent fd slots should contain -1."
3091     */
3092    if (fds) {
3093       /* Query nplanes so that we know how big the given array is. */
3094       dri2_dpy->image->queryImage(dri2_img->dri_image,
3095                                   __DRI_IMAGE_ATTRIB_NUM_PLANES, &nplanes);
3096       memset(fds, -1, nplanes * sizeof(int));
3097    }
3098
3099    /* rework later to provide multiple fds/strides/offsets */
3100    if (fds)
3101       dri2_dpy->image->queryImage(dri2_img->dri_image,
3102                                   __DRI_IMAGE_ATTRIB_FD, fds);
3103
3104    if (strides)
3105       dri2_dpy->image->queryImage(dri2_img->dri_image,
3106                                   __DRI_IMAGE_ATTRIB_STRIDE, strides);
3107
3108    if (offsets) {
3109       int img_offset;
3110       bool ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
3111                      __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
3112       if (ret)
3113          offsets[0] = img_offset;
3114       else
3115          offsets[0] = 0;
3116    }
3117
3118    return EGL_TRUE;
3119 }
3120
3121 #endif
3122
3123 _EGLImage *
3124 dri2_create_image_khr(const _EGLDriver *drv, _EGLDisplay *disp,
3125                       _EGLContext *ctx, EGLenum target,
3126                       EGLClientBuffer buffer, const EGLint *attr_list)
3127 {
3128    (void) drv;
3129
3130    switch (target) {
3131    case EGL_GL_TEXTURE_2D_KHR:
3132    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR:
3133    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR:
3134    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR:
3135    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR:
3136    case EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR:
3137    case EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR:
3138    case EGL_GL_TEXTURE_3D_KHR:
3139       return dri2_create_image_khr_texture(disp, ctx, target, buffer, attr_list);
3140    case EGL_GL_RENDERBUFFER_KHR:
3141       return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
3142 #ifdef HAVE_LIBDRM
3143    case EGL_DRM_BUFFER_MESA:
3144       return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
3145    case EGL_LINUX_DMA_BUF_EXT:
3146       return dri2_create_image_dma_buf(disp, ctx, buffer, attr_list);
3147 #endif
3148 #ifdef HAVE_WAYLAND_PLATFORM
3149    case EGL_WAYLAND_BUFFER_WL:
3150       return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
3151 #endif
3152    default:
3153       _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
3154       return EGL_NO_IMAGE_KHR;
3155    }
3156 }
3157
3158 static EGLBoolean
3159 dri2_destroy_image_khr(const _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
3160 {
3161    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3162    struct dri2_egl_image *dri2_img = dri2_egl_image(image);
3163
3164    (void) drv;
3165
3166    dri2_dpy->image->destroyImage(dri2_img->dri_image);
3167    free(dri2_img);
3168
3169    return EGL_TRUE;
3170 }
3171
3172 #ifdef HAVE_WAYLAND_PLATFORM
3173
3174 static void
3175 dri2_wl_reference_buffer(void *user_data, uint32_t name, int fd,
3176                          struct wl_drm_buffer *buffer)
3177 {
3178    _EGLDisplay *disp = user_data;
3179    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3180    __DRIimage *img;
3181    int dri_components = 0;
3182
3183    if (fd == -1)
3184       img = dri2_dpy->image->createImageFromNames(dri2_dpy->dri_screen,
3185                                                   buffer->width,
3186                                                   buffer->height,
3187                                                   buffer->format,
3188                                                   (int*)&name, 1,
3189                                                   buffer->stride,
3190                                                   buffer->offset,
3191                                                   NULL);
3192    else
3193       img = dri2_dpy->image->createImageFromFds(dri2_dpy->dri_screen,
3194                                                 buffer->width,
3195                                                 buffer->height,
3196                                                 buffer->format,
3197                                                 &fd, 1,
3198                                                 buffer->stride,
3199                                                 buffer->offset,
3200                                                 NULL);
3201
3202    if (img == NULL)
3203       return;
3204
3205    dri2_dpy->image->queryImage(img, __DRI_IMAGE_ATTRIB_COMPONENTS, &dri_components);
3206
3207    buffer->driver_format = NULL;
3208    for (int i = 0; i < ARRAY_SIZE(wl_drm_components); i++)
3209       if (wl_drm_components[i].dri_components == dri_components)
3210          buffer->driver_format = &wl_drm_components[i];
3211
3212    if (buffer->driver_format == NULL)
3213       dri2_dpy->image->destroyImage(img);
3214    else
3215       buffer->driver_buffer = img;
3216 }
3217
3218 static void
3219 dri2_wl_release_buffer(void *user_data, struct wl_drm_buffer *buffer)
3220 {
3221    _EGLDisplay *disp = user_data;
3222    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3223
3224    dri2_dpy->image->destroyImage(buffer->driver_buffer);
3225 }
3226
3227 static EGLBoolean
3228 dri2_bind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3229                              struct wl_display *wl_dpy)
3230 {
3231    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3232    const struct wayland_drm_callbacks wl_drm_callbacks = {
3233       .authenticate = (int(*)(void *, uint32_t)) dri2_dpy->vtbl->authenticate,
3234       .reference_buffer = dri2_wl_reference_buffer,
3235       .release_buffer = dri2_wl_release_buffer,
3236       .is_format_supported = dri2_wl_is_format_supported
3237    };
3238    int flags = 0;
3239    uint64_t cap;
3240
3241    (void) drv;
3242
3243    if (dri2_dpy->wl_server_drm)
3244            return EGL_FALSE;
3245
3246    if (drmGetCap(dri2_dpy->fd, DRM_CAP_PRIME, &cap) == 0 &&
3247        cap == (DRM_PRIME_CAP_IMPORT | DRM_PRIME_CAP_EXPORT) &&
3248        dri2_dpy->image->base.version >= 7 &&
3249        dri2_dpy->image->createImageFromFds != NULL)
3250       flags |= WAYLAND_DRM_PRIME;
3251
3252    dri2_dpy->wl_server_drm =
3253            wayland_drm_init(wl_dpy, dri2_dpy->device_name,
3254                             &wl_drm_callbacks, disp, flags);
3255
3256    if (!dri2_dpy->wl_server_drm)
3257            return EGL_FALSE;
3258
3259 #ifdef HAVE_DRM_PLATFORM
3260    /* We have to share the wl_drm instance with gbm, so gbm can convert
3261     * wl_buffers to gbm bos. */
3262    if (dri2_dpy->gbm_dri)
3263       dri2_dpy->gbm_dri->wl_drm = dri2_dpy->wl_server_drm;
3264 #endif
3265
3266    return EGL_TRUE;
3267 }
3268
3269 static EGLBoolean
3270 dri2_unbind_wayland_display_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3271                                struct wl_display *wl_dpy)
3272 {
3273    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3274
3275    (void) drv;
3276
3277    if (!dri2_dpy->wl_server_drm)
3278            return EGL_FALSE;
3279
3280    wayland_drm_uninit(dri2_dpy->wl_server_drm);
3281    dri2_dpy->wl_server_drm = NULL;
3282
3283    return EGL_TRUE;
3284 }
3285
3286 static EGLBoolean
3287 dri2_query_wayland_buffer_wl(const _EGLDriver *drv, _EGLDisplay *disp,
3288                              struct wl_resource *buffer_resource,
3289                              EGLint attribute, EGLint *value)
3290 {
3291    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3292    struct wl_drm_buffer *buffer;
3293    const struct wl_drm_components_descriptor *format;
3294
3295    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm, buffer_resource);
3296    if (!buffer)
3297       return EGL_FALSE;
3298
3299    format = buffer->driver_format;
3300    switch (attribute) {
3301    case EGL_TEXTURE_FORMAT:
3302       *value = format->components;
3303       return EGL_TRUE;
3304    case EGL_WIDTH:
3305       *value = buffer->width;
3306       return EGL_TRUE;
3307    case EGL_HEIGHT:
3308       *value = buffer->height;
3309       return EGL_TRUE;
3310    }
3311
3312    return EGL_FALSE;
3313 }
3314 #endif
3315
3316 static void
3317 dri2_egl_ref_sync(struct dri2_egl_sync *sync)
3318 {
3319    p_atomic_inc(&sync->refcount);
3320 }
3321
3322 static void
3323 dri2_egl_unref_sync(struct dri2_egl_display *dri2_dpy,
3324                     struct dri2_egl_sync *dri2_sync)
3325 {
3326    if (p_atomic_dec_zero(&dri2_sync->refcount)) {
3327       switch (dri2_sync->base.Type) {
3328       case EGL_SYNC_REUSABLE_KHR:
3329          cnd_destroy(&dri2_sync->cond);
3330          break;
3331       case EGL_SYNC_NATIVE_FENCE_ANDROID:
3332          if (dri2_sync->base.SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
3333             close(dri2_sync->base.SyncFd);
3334          break;
3335       default:
3336          break;
3337       }
3338
3339       if (dri2_sync->fence)
3340          dri2_dpy->fence->destroy_fence(dri2_dpy->dri_screen, dri2_sync->fence);
3341
3342       free(dri2_sync);
3343    }
3344 }
3345
3346 static _EGLSync *
3347 dri2_create_sync(const _EGLDriver *drv, _EGLDisplay *disp,
3348                  EGLenum type, const EGLAttrib *attrib_list)
3349 {
3350    _EGLContext *ctx = _eglGetCurrentContext();
3351    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3352    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3353    struct dri2_egl_sync *dri2_sync;
3354    EGLint ret;
3355    pthread_condattr_t attr;
3356
3357    dri2_sync = calloc(1, sizeof(struct dri2_egl_sync));
3358    if (!dri2_sync) {
3359       _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3360       return NULL;
3361    }
3362
3363    if (!_eglInitSync(&dri2_sync->base, disp, type, attrib_list)) {
3364       free(dri2_sync);
3365       return NULL;
3366    }
3367
3368    switch (type) {
3369    case EGL_SYNC_FENCE_KHR:
3370       dri2_sync->fence = dri2_dpy->fence->create_fence(dri2_ctx->dri_context);
3371       if (!dri2_sync->fence) {
3372          /* Why did it fail? DRI doesn't return an error code, so we emit
3373           * a generic EGL error that doesn't communicate user error.
3374           */
3375          _eglError(EGL_BAD_ALLOC, "eglCreateSyncKHR");
3376          free(dri2_sync);
3377          return NULL;
3378       }
3379       break;
3380
3381    case EGL_SYNC_CL_EVENT_KHR:
3382       dri2_sync->fence = dri2_dpy->fence->get_fence_from_cl_event(
3383                                  dri2_dpy->dri_screen,
3384                                  dri2_sync->base.CLEvent);
3385       /* this can only happen if the cl_event passed in is invalid. */
3386       if (!dri2_sync->fence) {
3387          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3388          free(dri2_sync);
3389          return NULL;
3390       }
3391
3392       /* the initial status must be "signaled" if the cl_event is signaled */
3393       if (dri2_dpy->fence->client_wait_sync(dri2_ctx->dri_context,
3394                                             dri2_sync->fence, 0, 0))
3395          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3396       break;
3397
3398    case EGL_SYNC_REUSABLE_KHR:
3399       /* intialize attr */
3400       ret = pthread_condattr_init(&attr);
3401
3402       if (ret) {
3403          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3404          free(dri2_sync);
3405          return NULL;
3406       }
3407
3408       /* change clock attribute to CLOCK_MONOTONIC */
3409       ret = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
3410
3411       if (ret) {
3412          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3413          free(dri2_sync);
3414          return NULL;
3415       }
3416
3417       ret = pthread_cond_init(&dri2_sync->cond, &attr);
3418
3419       if (ret) {
3420          _eglError(EGL_BAD_ACCESS, "eglCreateSyncKHR");
3421          free(dri2_sync);
3422          return NULL;
3423       }
3424
3425       /* initial status of reusable sync must be "unsignaled" */
3426       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
3427       break;
3428
3429    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3430       if (dri2_dpy->fence->create_fence_fd) {
3431          dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
3432                                     dri2_ctx->dri_context,
3433                                     dri2_sync->base.SyncFd);
3434       }
3435       if (!dri2_sync->fence) {
3436          _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
3437          free(dri2_sync);
3438          return NULL;
3439       }
3440       break;
3441    }
3442
3443    p_atomic_set(&dri2_sync->refcount, 1);
3444    return &dri2_sync->base;
3445 }
3446
3447 static EGLBoolean
3448 dri2_destroy_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3449 {
3450    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3451    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3452    EGLint ret = EGL_TRUE;
3453    EGLint err;
3454
3455    /* if type of sync is EGL_SYNC_REUSABLE_KHR and it is not signaled yet,
3456     * then unlock all threads possibly blocked by the reusable sync before
3457     * destroying it.
3458     */
3459    if (dri2_sync->base.Type == EGL_SYNC_REUSABLE_KHR &&
3460        dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3461       dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3462       /* unblock all threads currently blocked by sync */
3463       err = cnd_broadcast(&dri2_sync->cond);
3464
3465       if (err) {
3466          _eglError(EGL_BAD_ACCESS, "eglDestroySyncKHR");
3467          ret = EGL_FALSE;
3468       }
3469    }
3470
3471    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3472
3473    return ret;
3474 }
3475
3476 static EGLint
3477 dri2_dup_native_fence_fd(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3478 {
3479    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3480    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3481
3482    assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
3483
3484    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3485       /* try to retrieve the actual native fence fd.. if rendering is
3486        * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
3487        */
3488       sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
3489                                                    dri2_sync->fence);
3490    }
3491
3492    if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
3493       /* if native fence fd still not created, return an error: */
3494       _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
3495       return EGL_NO_NATIVE_FENCE_FD_ANDROID;
3496    }
3497
3498    return os_dupfd_cloexec(sync->SyncFd);
3499 }
3500
3501 static void
3502 dri2_set_blob_cache_funcs(const _EGLDriver *drv, _EGLDisplay *disp,
3503                           EGLSetBlobFuncANDROID set,
3504                           EGLGetBlobFuncANDROID get)
3505 {
3506    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3507    dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
3508                                    disp->BlobCacheSet,
3509                                    disp->BlobCacheGet);
3510 }
3511
3512 static EGLint
3513 dri2_client_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3514                       EGLint flags, EGLTime timeout)
3515 {
3516    _EGLContext *ctx = _eglGetCurrentContext();
3517    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3518    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3519    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3520    unsigned wait_flags = 0;
3521
3522    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
3523
3524    /* The EGL_KHR_fence_sync spec states:
3525     *
3526     *    "If no context is current for the bound API,
3527     *     the EGL_SYNC_FLUSH_COMMANDS_BIT_KHR bit is ignored.
3528     */
3529    if (dri2_ctx && flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)
3530       wait_flags |= __DRI2_FENCE_FLAG_FLUSH_COMMANDS;
3531
3532    /* the sync object should take a reference while waiting */
3533    dri2_egl_ref_sync(dri2_sync);
3534
3535    switch (sync->Type) {
3536    case EGL_SYNC_FENCE_KHR:
3537    case EGL_SYNC_NATIVE_FENCE_ANDROID:
3538    case EGL_SYNC_CL_EVENT_KHR:
3539       if (dri2_dpy->fence->client_wait_sync(dri2_ctx ? dri2_ctx->dri_context : NULL,
3540                                          dri2_sync->fence, wait_flags,
3541                                          timeout))
3542          dri2_sync->base.SyncStatus = EGL_SIGNALED_KHR;
3543       else
3544          ret = EGL_TIMEOUT_EXPIRED_KHR;
3545       break;
3546
3547    case EGL_SYNC_REUSABLE_KHR:
3548       if (dri2_ctx && dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR &&
3549           (flags & EGL_SYNC_FLUSH_COMMANDS_BIT_KHR)) {
3550          /* flush context if EGL_SYNC_FLUSH_COMMANDS_BIT_KHR is set */
3551          dri2_gl_flush();
3552       }
3553
3554       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
3555       if (timeout == EGL_FOREVER_KHR) {
3556          mtx_lock(&dri2_sync->mutex);
3557          cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
3558          mtx_unlock(&dri2_sync->mutex);
3559       } else {
3560          /* if reusable sync has not been yet signaled */
3561          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
3562             /* timespecs for cnd_timedwait */
3563             struct timespec current;
3564             struct timespec expire;
3565
3566             /* We override the clock to monotonic when creating the condition
3567              * variable. */
3568             clock_gettime(CLOCK_MONOTONIC, &current);
3569
3570             /* calculating when to expire */
3571             expire.tv_nsec = timeout % 1000000000L;
3572             expire.tv_sec = timeout / 1000000000L;
3573
3574             expire.tv_nsec += current.tv_nsec;
3575             expire.tv_sec += current.tv_sec;
3576
3577             /* expire.nsec now is a number between 0 and 1999999998 */
3578             if (expire.tv_nsec > 999999999L) {
3579                expire.tv_sec++;
3580                expire.tv_nsec -= 1000000000L;
3581             }
3582
3583             mtx_lock(&dri2_sync->mutex);
3584             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
3585             mtx_unlock(&dri2_sync->mutex);
3586
3587             if (ret == thrd_busy) {
3588                if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
3589                   ret = EGL_TIMEOUT_EXPIRED_KHR;
3590                } else {
3591                   _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
3592                   ret = EGL_FALSE;
3593                }
3594             }
3595          }
3596       }
3597       break;
3598   }
3599   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
3600
3601   return ret;
3602 }
3603
3604 static EGLBoolean
3605 dri2_signal_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync,
3606                       EGLenum mode)
3607 {
3608    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3609    EGLint ret;
3610
3611    if (sync->Type != EGL_SYNC_REUSABLE_KHR)
3612       return _eglError(EGL_BAD_MATCH, "eglSignalSyncKHR");
3613
3614    if (mode != EGL_SIGNALED_KHR && mode != EGL_UNSIGNALED_KHR)
3615       return _eglError(EGL_BAD_ATTRIBUTE, "eglSignalSyncKHR");
3616
3617    dri2_sync->base.SyncStatus = mode;
3618
3619    if (mode == EGL_SIGNALED_KHR) {
3620       ret = cnd_broadcast(&dri2_sync->cond);
3621
3622       /* fail to broadcast */
3623       if (ret)
3624          return _eglError(EGL_BAD_ACCESS, "eglSignalSyncKHR");
3625    }
3626
3627    return EGL_TRUE;
3628 }
3629
3630 static EGLint
3631 dri2_server_wait_sync(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
3632 {
3633    _EGLContext *ctx = _eglGetCurrentContext();
3634    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3635    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3636    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
3637
3638    dri2_dpy->fence->server_wait_sync(dri2_ctx->dri_context,
3639                                      dri2_sync->fence, 0);
3640    return EGL_TRUE;
3641 }
3642
3643 static int
3644 dri2_interop_query_device_info(_EGLDisplay *disp, _EGLContext *ctx,
3645                                struct mesa_glinterop_device_info *out)
3646 {
3647    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3648    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3649
3650    if (!dri2_dpy->interop)
3651       return MESA_GLINTEROP_UNSUPPORTED;
3652
3653    return dri2_dpy->interop->query_device_info(dri2_ctx->dri_context, out);
3654 }
3655
3656 static int
3657 dri2_interop_export_object(_EGLDisplay *disp, _EGLContext *ctx,
3658                            struct mesa_glinterop_export_in *in,
3659                            struct mesa_glinterop_export_out *out)
3660 {
3661    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
3662    struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
3663
3664    if (!dri2_dpy->interop)
3665       return MESA_GLINTEROP_UNSUPPORTED;
3666
3667    return dri2_dpy->interop->export_object(dri2_ctx->dri_context, in, out);
3668 }
3669
3670 const _EGLDriver _eglDriver = {
3671    .Initialize = dri2_initialize,
3672    .Terminate = dri2_terminate,
3673    .CreateContext = dri2_create_context,
3674    .DestroyContext = dri2_destroy_context,
3675    .MakeCurrent = dri2_make_current,
3676    .CreateWindowSurface = dri2_create_window_surface,
3677    .CreatePixmapSurface = dri2_create_pixmap_surface,
3678    .CreatePbufferSurface = dri2_create_pbuffer_surface,
3679    .DestroySurface = dri2_destroy_surface,
3680    .GetProcAddress = dri2_get_proc_address,
3681    .WaitClient = dri2_wait_client,
3682    .WaitNative = dri2_wait_native,
3683    .BindTexImage = dri2_bind_tex_image,
3684    .ReleaseTexImage = dri2_release_tex_image,
3685    .SwapInterval = dri2_swap_interval,
3686    .SwapBuffers = dri2_swap_buffers,
3687    .SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage,
3688    .SwapBuffersRegionNOK = dri2_swap_buffers_region,
3689    .SetDamageRegion = dri2_set_damage_region,
3690    .PostSubBufferNV = dri2_post_sub_buffer,
3691    .CopyBuffers = dri2_copy_buffers,
3692    .QueryBufferAge = dri2_query_buffer_age,
3693    .CreateImageKHR = dri2_create_image,
3694    .DestroyImageKHR = dri2_destroy_image_khr,
3695    .CreateWaylandBufferFromImageWL = dri2_create_wayland_buffer_from_image,
3696    .QuerySurface = dri2_query_surface,
3697    .QueryDriverName = dri2_query_driver_name,
3698    .QueryDriverConfig = dri2_query_driver_config,
3699 #ifdef HAVE_LIBDRM
3700    .CreateDRMImageMESA = dri2_create_drm_image_mesa,
3701    .ExportDRMImageMESA = dri2_export_drm_image_mesa,
3702    .ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa,
3703    .ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa,
3704    .QueryDmaBufFormatsEXT = dri2_query_dma_buf_formats,
3705    .QueryDmaBufModifiersEXT = dri2_query_dma_buf_modifiers,
3706 #endif
3707 #ifdef HAVE_WAYLAND_PLATFORM
3708    .BindWaylandDisplayWL = dri2_bind_wayland_display_wl,
3709    .UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl,
3710    .QueryWaylandBufferWL = dri2_query_wayland_buffer_wl,
3711 #endif
3712    .GetSyncValuesCHROMIUM = dri2_get_sync_values_chromium,
3713    .CreateSyncKHR = dri2_create_sync,
3714    .ClientWaitSyncKHR = dri2_client_wait_sync,
3715    .SignalSyncKHR = dri2_signal_sync,
3716    .WaitSyncKHR = dri2_server_wait_sync,
3717    .DestroySyncKHR = dri2_destroy_sync,
3718    .GLInteropQueryDeviceInfo = dri2_interop_query_device_info,
3719    .GLInteropExportObject = dri2_interop_export_object,
3720    .DupNativeFenceFDANDROID = dri2_dup_native_fence_fd,
3721    .SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs,
3722 };