src/drm/cairo-drm-intel-surface.c

   1 /* Cairo - a vector graphics library with display and print output
   2  *
   3  * Copyright © 2009 Chris Wilson
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it either under the terms of the GNU Lesser General Public
   7  * License version 2.1 as published by the Free Software Foundation
   8  * (the "LGPL") or, at your option, under the terms of the Mozilla
   9  * Public License Version 1.1 (the "MPL"). If you do not alter this
  10  * notice, a recipient may use your version of this file under either
  11  * the MPL or the LGPL.
  12  *
  13  * You should have received a copy of the LGPL along with this library
  14  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  16  * You should have received a copy of the MPL along with this library
  17  * in the file COPYING-MPL-1.1
  18  *
  19  * The contents of this file are subject to the Mozilla Public License
  20  * Version 1.1 (the "License"); you may not use this file except in
  21  * compliance with the License. You may obtain a copy of the License at
  22  * http://www.mozilla.org/MPL/
  23  *
  24  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  25  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  26  * the specific language governing rights and limitations.
  27  *
  28  */
  29
  30 #include "cairoint.h"
  31
  32 #include "cairo-drm-private.h"
  33 #include "cairo-drm-intel-private.h"
  34
  35 #include "cairo-default-context-private.h"
  36 #include "cairo-error-private.h"
  37
  38 /* Basic generic/stub surface for intel chipsets */
  39
  40 #define MAX_SIZE 2048
  41
  42 static cairo_surface_t *
  43 intel_surface_create_similar (void                      *abstract_surface,
  44                               cairo_content_t    content,
  45                               int                        width,
  46                               int                        height)
  47 {
  48     return cairo_image_surface_create (_cairo_format_from_content (content),
  49                                        width, height);
  50 }
  51
  52 cairo_status_t
  53 intel_surface_finish (void *abstract_surface)
  54 {
  55     intel_surface_t *surface = abstract_surface;
  56
  57     intel_bo_in_flight_add (to_intel_device (surface->drm.base.device),
  58                             to_intel_bo (surface->drm.bo));
  59     return _cairo_drm_surface_finish (&surface->drm);
  60 }
  61
  62 static void
  63 surface_finish_and_destroy (cairo_surface_t *surface)
  64 {
  65     cairo_surface_finish (surface);
  66     cairo_surface_destroy (surface);
  67 }
  68
  69 cairo_status_t
  70 intel_surface_acquire_source_image (void *abstract_surface,
  71                                     cairo_image_surface_t **image_out,
  72                                     void **image_extra)
  73 {
  74     intel_surface_t *surface = abstract_surface;
  75     cairo_surface_t *image;
  76     cairo_status_t status;
  77     void *ptr;
  78
  79     if (surface->drm.fallback != NULL) {
  80         image = surface->drm.fallback;
  81         goto DONE;
  82     }
  83
  84     image = _cairo_surface_has_snapshot (&surface->drm.base,
  85                                          &_cairo_image_surface_backend);
  86     if (image != NULL)
  87         goto DONE;
  88
  89     if (surface->drm.base.backend->flush != NULL) {
  90         status = surface->drm.base.backend->flush (surface);
  91         if (unlikely (status))
  92             return status;
  93     }
  94
  95     ptr = intel_bo_map (to_intel_device (surface->drm.base.device),
  96                         to_intel_bo (surface->drm.bo));
  97     if (unlikely (ptr == NULL))
  98         return _cairo_error (CAIRO_STATUS_NO_MEMORY);
  99
 100     image = cairo_image_surface_create_for_data (ptr,
 101                                                  surface->drm.format,
 102                                                  surface->drm.width,
 103                                                  surface->drm.height,
 104                                                  surface->drm.stride);
 105     if (unlikely (image->status))
 106         return image->status;
 107
 108     _cairo_surface_attach_snapshot (&surface->drm.base, image, surface_finish_and_destroy);
 109
 110 DONE:
 111     *image_out = (cairo_image_surface_t *) cairo_surface_reference (image);
 112     *image_extra = NULL;
 113     return CAIRO_STATUS_SUCCESS;
 114 }
 115
 116 void
 117 intel_surface_release_source_image (void *abstract_surface,
 118                                     cairo_image_surface_t *image,
 119                                     void *image_extra)
 120 {
 121     cairo_surface_destroy (&image->base);
 122 }
 123
 124 cairo_surface_t *
 125 intel_surface_map_to_image (void *abstract_surface)
 126 {
 127     intel_surface_t *surface = abstract_surface;
 128
 129     if (surface->drm.fallback == NULL) {
 130         cairo_surface_t *image;
 131         cairo_status_t status;
 132         void *ptr;
 133
 134         if (surface->drm.base.backend->flush != NULL) {
 135             status = surface->drm.base.backend->flush (surface);
 136             if (unlikely (status))
 137                 return _cairo_surface_create_in_error (status);
 138         }
 139
 140         ptr = intel_bo_map (to_intel_device (surface->drm.base.device),
 141                             to_intel_bo (surface->drm.bo));
 142         if (unlikely (ptr == NULL))
 143             return _cairo_surface_create_in_error (CAIRO_STATUS_NO_MEMORY);
 144
 145         image = cairo_image_surface_create_for_data (ptr,
 146                                                      surface->drm.format,
 147                                                      surface->drm.width,
 148                                                      surface->drm.height,
 149                                                      surface->drm.stride);
 150         if (unlikely (image->status))
 151             return image;
 152
 153         surface->drm.fallback = image;
 154     }
 155
 156     return surface->drm.fallback;
 157 }
 158
 159 cairo_status_t
 160 intel_surface_flush (void *abstract_surface)
 161 {
 162     intel_surface_t *surface = abstract_surface;
 163     cairo_status_t status;
 164
 165     if (surface->drm.fallback == NULL)
 166         return CAIRO_STATUS_SUCCESS;
 167
 168     /* kill any outstanding maps */
 169     cairo_surface_finish (surface->drm.fallback);
 170
 171     status = cairo_surface_status (surface->drm.fallback);
 172     cairo_surface_destroy (surface->drm.fallback);
 173     surface->drm.fallback = NULL;
 174
 175     return status;
 176 }
 177
 178 static cairo_int_status_t
 179 intel_surface_paint (void *abstract_surface,
 180                      cairo_operator_t            op,
 181                      const cairo_pattern_t      *source,
 182                      cairo_clip_t               *clip)
 183 {
 184     return _cairo_surface_paint (intel_surface_map_to_image (abstract_surface),
 185                                  op, source, clip);
 186 }
 187
 188 static cairo_int_status_t
 189 intel_surface_mask (void                        *abstract_surface,
 190                     cairo_operator_t             op,
 191                     const cairo_pattern_t       *source,
 192                     const cairo_pattern_t       *mask,
 193                     cairo_clip_t                *clip)
 194 {
 195     return _cairo_surface_mask (intel_surface_map_to_image (abstract_surface),
 196                                 op, source, mask, clip);
 197 }
 198
 199 static cairo_int_status_t
 200 intel_surface_stroke (void                      *abstract_surface,
 201                       cairo_operator_t           op,
 202                       const cairo_pattern_t     *source,
 203                       cairo_path_fixed_t        *path,
 204                       const cairo_stroke_style_t        *stroke_style,
 205                       const cairo_matrix_t              *ctm,
 206                       const cairo_matrix_t              *ctm_inverse,
 207                       double                     tolerance,
 208                       cairo_antialias_t          antialias,
 209                       cairo_clip_t              *clip)
 210 {
 211     return _cairo_surface_stroke (intel_surface_map_to_image (abstract_surface),
 212                                   op, source, path, stroke_style, ctm, ctm_inverse,
 213                                   tolerance, antialias, clip);
 214 }
 215
 216 static cairo_int_status_t
 217 intel_surface_fill (void                        *abstract_surface,
 218                     cairo_operator_t             op,
 219                     const cairo_pattern_t       *source,
 220                     cairo_path_fixed_t          *path,
 221                     cairo_fill_rule_t            fill_rule,
 222                     double                       tolerance,
 223                     cairo_antialias_t            antialias,
 224                     cairo_clip_t                *clip)
 225 {
 226     return _cairo_surface_fill (intel_surface_map_to_image (abstract_surface),
 227                                 op, source, path, fill_rule,
 228                                 tolerance, antialias, clip);
 229 }
 230
 231 static cairo_int_status_t
 232 intel_surface_glyphs (void                      *abstract_surface,
 233                       cairo_operator_t           op,
 234                       const cairo_pattern_t     *source,
 235                       cairo_glyph_t             *glyphs,
 236                       int                        num_glyphs,
 237                       cairo_scaled_font_t       *scaled_font,
 238                       cairo_clip_t              *clip,
 239                       int *num_remaining)
 240 {
 241     *num_remaining = 0;
 242     return _cairo_surface_show_text_glyphs (intel_surface_map_to_image (abstract_surface),
 243                                             op, source,
 244                                             NULL, 0,
 245                                             glyphs, num_glyphs,
 246                                             NULL, 0, 0,
 247                                             scaled_font, clip);
 248 }
 249
 250 static const cairo_surface_backend_t intel_surface_backend = {
 251     CAIRO_SURFACE_TYPE_DRM,
 252     _cairo_default_context_create,
 253
 254     intel_surface_create_similar,
 255     intel_surface_finish,
 256
 257     NULL,
 258     intel_surface_acquire_source_image,
 259     intel_surface_release_source_image,
 260
 261     NULL, NULL, NULL,
 262     NULL, /* composite */
 263     NULL, /* fill */
 264     NULL, /* trapezoids */
 265     NULL, /* span */
 266     NULL, /* check-span */
 267
 268     NULL, /* copy_page */
 269     NULL, /* show_page */
 270     _cairo_drm_surface_get_extents,
 271     NULL, /* old-glyphs */
 272     _cairo_drm_surface_get_font_options,
 273
 274     intel_surface_flush,
 275     NULL, /* mark dirty */
 276     NULL, NULL, /* font/glyph fini */
 277
 278     intel_surface_paint,
 279     intel_surface_mask,
 280     intel_surface_stroke,
 281     intel_surface_fill,
 282     intel_surface_glyphs,
 283 };
 284
 285 void
 286 intel_surface_init (intel_surface_t *surface,
 287                     const cairo_surface_backend_t *backend,
 288                     cairo_drm_device_t *device,
 289                     cairo_format_t format,
 290                     int width, int height)
 291 {
 292     _cairo_surface_init (&surface->drm.base,
 293                          backend,
 294                          &device->base,
 295                          _cairo_content_from_format (format));
 296     _cairo_drm_surface_init (&surface->drm, format, width, height);
 297
 298     surface->snapshot_cache_entry.hash = 0;
 299 }
 300
 301 static cairo_surface_t *
 302 intel_surface_create (cairo_drm_device_t *device,
 303                       cairo_format_t format,
 304                       int width, int height)
 305 {
 306     intel_surface_t *surface;
 307     cairo_status_t status;
 308
 309     surface = malloc (sizeof (intel_surface_t));
 310     if (unlikely (surface == NULL))
 311         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
 312
 313     intel_surface_init (surface, &intel_surface_backend, device,
 314                         format, width, height);
 315
 316     if (width && height) {
 317         /* Vol I, p134: size restrictions for textures */
 318         width  = (width  + 3) & -4;
 319         height = (height + 1) & -2;
 320         surface->drm.stride =
 321             cairo_format_stride_for_width (surface->drm.format, width);
 322         surface->drm.bo = &intel_bo_create (to_intel_device (&device->base),
 323                                             surface->drm.stride * height,
 324                                             surface->drm.stride * height,
 325                                             TRUE, I915_TILING_NONE, surface->drm.stride)->base;
 326         if (surface->drm.bo == NULL) {
 327             status = _cairo_drm_surface_finish (&surface->drm);
 328             free (surface);
 329             return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
 330         }
 331     }
 332
 333     return &surface->drm.base;
 334 }
 335
 336 static cairo_surface_t *
 337 intel_surface_create_for_name (cairo_drm_device_t *device,
 338                                unsigned int name,
 339                                cairo_format_t format,
 340                                int width, int height, int stride)
 341 {
 342     intel_surface_t *surface;
 343     cairo_status_t status;
 344
 345     switch (format) {
 346     default:
 347     case CAIRO_FORMAT_INVALID:
 348     case CAIRO_FORMAT_A1:
 349         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
 350     case CAIRO_FORMAT_ARGB32:
 351     case CAIRO_FORMAT_RGB16_565:
 352     case CAIRO_FORMAT_RGB24:
 353     case CAIRO_FORMAT_A8:
 354         break;
 355     }
 356
 357     if (stride < cairo_format_stride_for_width (format, width))
 358         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_STRIDE));
 359
 360     surface = malloc (sizeof (intel_surface_t));
 361     if (unlikely (surface == NULL))
 362         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
 363
 364     intel_surface_init (surface, &intel_surface_backend,
 365                         device, format, width, height);
 366
 367     if (width && height) {
 368         surface->drm.stride = stride;
 369
 370         surface->drm.bo = &intel_bo_create_for_name (to_intel_device (&device->base),
 371                                                       name)->base;
 372         if (unlikely (surface->drm.bo == NULL)) {
 373             status = _cairo_drm_surface_finish (&surface->drm);
 374             free (surface);
 375             return _cairo_surface_create_in_error (_cairo_error
 376                                                    (CAIRO_STATUS_NO_MEMORY));
 377         }
 378     }
 379
 380     return &surface->drm.base;
 381 }
 382
 383 static cairo_status_t
 384 intel_surface_enable_scan_out (void *abstract_surface)
 385 {
 386     intel_surface_t *surface = abstract_surface;
 387
 388     if (unlikely (surface->drm.bo == NULL))
 389         return _cairo_error (CAIRO_STATUS_INVALID_SIZE);
 390
 391     to_intel_bo (surface->drm.bo)->tiling = I915_TILING_X;
 392
 393     return CAIRO_STATUS_SUCCESS;
 394 }
 395
 396 static cairo_int_status_t
 397 intel_device_throttle (cairo_drm_device_t *device)
 398 {
 399     intel_throttle (to_intel_device (&device->base));
 400     return CAIRO_STATUS_SUCCESS;
 401 }
 402
 403 static void
 404 intel_device_destroy (void *data)
 405 {
 406     intel_device_t *device = data;
 407
 408     intel_device_fini (device);
 409
 410     free (data);
 411 }
 412
 413 cairo_drm_device_t *
 414 _cairo_drm_intel_device_create (int fd, dev_t dev, int vendor_id, int chip_id)
 415 {
 416     intel_device_t *device;
 417     cairo_status_t status;
 418
 419     if (! intel_info (fd, NULL))
 420         return NULL;
 421
 422     device = malloc (sizeof (intel_device_t));
 423     if (unlikely (device == NULL))
 424         return (cairo_drm_device_t *) _cairo_device_create_in_error (CAIRO_STATUS_NO_MEMORY);
 425
 426     status = intel_device_init (device, fd);
 427     if (unlikely (status)) {
 428         free (device);
 429         return (cairo_drm_device_t *) _cairo_device_create_in_error (status);
 430     }
 431
 432     device->base.surface.create = intel_surface_create;
 433     device->base.surface.create_for_name = intel_surface_create_for_name;
 434     device->base.surface.create_from_cacheable_image = NULL;
 435     device->base.surface.flink = _cairo_drm_surface_flink;
 436     device->base.surface.enable_scan_out = intel_surface_enable_scan_out;
 437
 438     device->base.surface.map_to_image = intel_surface_map_to_image;
 439
 440     device->base.device.flush = NULL;
 441     device->base.device.throttle = intel_device_throttle;
 442     device->base.device.destroy = intel_device_destroy;
 443
 444     return _cairo_drm_device_init (&device->base,
 445                                    fd, dev,
 446                                    vendor_id, chip_id,
 447                                    MAX_SIZE);
 448 }