src/mesa/drivers/dri/intel/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <errno.h>
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/framebuffer.h"
  32 #include "main/renderbuffer.h"
  33 #include "main/hash.h"
  34 #include "main/fbobject.h"
  35 #include "main/mfeatures.h"
  36 #include "main/version.h"
  37 #include "swrast/s_renderbuffer.h"
  38
  39 #include "utils.h"
  40 #include "xmlpool.h"
  41
  42 PUBLIC const char __driConfigOptions[] =
  43    DRI_CONF_BEGIN
  44    DRI_CONF_SECTION_PERFORMANCE
  45       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  46       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  47        * DRI_CONF_BO_REUSE_ALL
  48        */
  49       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  50          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  51             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  52             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  53          DRI_CONF_DESC_END
  54       DRI_CONF_OPT_END
  55
  56       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  57          DRI_CONF_DESC(en, "Enable texture tiling")
  58       DRI_CONF_OPT_END
  59
  60       DRI_CONF_OPT_BEGIN(hiz, bool, true)
  61          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  62       DRI_CONF_OPT_END
  63
  64       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  65          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  66       DRI_CONF_OPT_END
  67
  68       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  69          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  70       DRI_CONF_OPT_END
  71
  72    DRI_CONF_SECTION_END
  73    DRI_CONF_SECTION_QUALITY
  74       DRI_CONF_FORCE_S3TC_ENABLE(false)
  75       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  76    DRI_CONF_SECTION_END
  77    DRI_CONF_SECTION_DEBUG
  78      DRI_CONF_NO_RAST(false)
  79      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  80      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  81      DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
  82      DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(false)
  83
  84       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  85          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  86       DRI_CONF_OPT_END
  87
  88       DRI_CONF_OPT_BEGIN(shader_precompile, bool, false)
  89          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  90       DRI_CONF_OPT_END
  91    DRI_CONF_SECTION_END
  92 DRI_CONF_END;
  93
  94 const GLuint __driNConfigOptions = 15;
  95
  96 #include "intel_batchbuffer.h"
  97 #include "intel_buffers.h"
  98 #include "intel_bufmgr.h"
  99 #include "intel_chipset.h"
 100 #include "intel_fbo.h"
 101 #include "intel_mipmap_tree.h"
 102 #include "intel_screen.h"
 103 #include "intel_tex.h"
 104 #include "intel_regions.h"
 105
 106 #include "i915_drm.h"
 107
 108 #ifdef USE_NEW_INTERFACE
 109 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 110 #endif /*USE_NEW_INTERFACE */
 111
 112 /**
 113  * For debugging purposes, this returns a time in seconds.
 114  */
 115 double
 116 get_time(void)
 117 {
 118    struct timespec tp;
 119
 120    clock_gettime(CLOCK_MONOTONIC, &tp);
 121
 122    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 123 }
 124
 125 void
 126 aub_dump_bmp(struct gl_context *ctx)
 127 {
 128    struct gl_framebuffer *fb = ctx->DrawBuffer;
 129
 130    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 131       struct intel_renderbuffer *irb =
 132          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 133
 134       if (irb && irb->mt) {
 135          enum aub_dump_bmp_format format;
 136
 137          switch (irb->Base.Base.Format) {
 138          case MESA_FORMAT_ARGB8888:
 139          case MESA_FORMAT_XRGB8888:
 140             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 141             break;
 142          default:
 143             continue;
 144          }
 145
 146          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 147                                        irb->draw_x,
 148                                        irb->draw_y,
 149                                        irb->Base.Base.Width,
 150                                        irb->Base.Base.Height,
 151                                        format,
 152                                        irb->mt->region->pitch *
 153                                        irb->mt->region->cpp,
 154                                        0);
 155       }
 156    }
 157 }
 158
 159 static const __DRItexBufferExtension intelTexBufferExtension = {
 160     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 161    intelSetTexBuffer,
 162    intelSetTexBuffer2,
 163 };
 164
 165 static void
 166 intelDRI2Flush(__DRIdrawable *drawable)
 167 {
 168    GET_CURRENT_CONTEXT(ctx);
 169    struct intel_context *intel = intel_context(ctx);
 170    if (intel == NULL)
 171       return;
 172
 173    if (intel->gen < 4)
 174       INTEL_FIREVERTICES(intel);
 175
 176    intel_downsample_for_dri2_flush(intel, drawable);
 177    intel->need_throttle = true;
 178
 179    if (intel->batch.used)
 180       intel_batchbuffer_flush(intel);
 181
 182    if (INTEL_DEBUG & DEBUG_AUB) {
 183       aub_dump_bmp(ctx);
 184    }
 185 }
 186
 187 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 188     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 189     intelDRI2Flush,
 190     dri2InvalidateDrawable,
 191 };
 192
 193 static __DRIimage *
 194 intel_allocate_image(int dri_format, void *loaderPrivate)
 195 {
 196     __DRIimage *image;
 197
 198     image = CALLOC(sizeof *image);
 199     if (image == NULL)
 200         return NULL;
 201
 202     image->dri_format = dri_format;
 203     image->offset = 0;
 204
 205     switch (dri_format) {
 206     case __DRI_IMAGE_FORMAT_RGB565:
 207        image->format = MESA_FORMAT_RGB565;
 208        break;
 209     case __DRI_IMAGE_FORMAT_XRGB8888:
 210        image->format = MESA_FORMAT_XRGB8888;
 211        break;
 212     case __DRI_IMAGE_FORMAT_ARGB8888:
 213        image->format = MESA_FORMAT_ARGB8888;
 214        break;
 215     case __DRI_IMAGE_FORMAT_ABGR8888:
 216        image->format = MESA_FORMAT_RGBA8888_REV;
 217        break;
 218     case __DRI_IMAGE_FORMAT_XBGR8888:
 219        image->format = MESA_FORMAT_RGBX8888_REV;
 220        break;
 221     case __DRI_IMAGE_FORMAT_R8:
 222        image->format = MESA_FORMAT_R8;
 223        break;
 224     case __DRI_IMAGE_FORMAT_GR88:
 225        image->format = MESA_FORMAT_GR88;
 226        break;
 227     case __DRI_IMAGE_FORMAT_NONE:
 228        image->format = MESA_FORMAT_NONE;
 229        break;
 230     default:
 231        free(image);
 232        return NULL;
 233     }
 234
 235     image->internal_format = _mesa_get_format_base_format(image->format);
 236     image->data = loaderPrivate;
 237
 238     return image;
 239 }
 240
 241 static __DRIimage *
 242 intel_create_image_from_name(__DRIscreen *screen,
 243                              int width, int height, int format,
 244                              int name, int pitch, void *loaderPrivate)
 245 {
 246     struct intel_screen *intelScreen = screen->driverPrivate;
 247     __DRIimage *image;
 248     int cpp;
 249
 250     image = intel_allocate_image(format, loaderPrivate);
 251     if (image->format == MESA_FORMAT_NONE)
 252        cpp = 0;
 253     else
 254        cpp = _mesa_get_format_bytes(image->format);
 255     image->region = intel_region_alloc_for_handle(intelScreen,
 256                                                   cpp, width, height,
 257                                                   pitch, name, "image");
 258     if (image->region == NULL) {
 259        FREE(image);
 260        return NULL;
 261     }
 262
 263     return image;
 264 }
 265
 266 static __DRIimage *
 267 intel_create_image_from_renderbuffer(__DRIcontext *context,
 268                                      int renderbuffer, void *loaderPrivate)
 269 {
 270    __DRIimage *image;
 271    struct intel_context *intel = context->driverPrivate;
 272    struct gl_renderbuffer *rb;
 273    struct intel_renderbuffer *irb;
 274
 275    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 276    if (!rb) {
 277       _mesa_error(&intel->ctx,
 278                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 279       return NULL;
 280    }
 281
 282    irb = intel_renderbuffer(rb);
 283    image = CALLOC(sizeof *image);
 284    if (image == NULL)
 285       return NULL;
 286
 287    image->internal_format = rb->InternalFormat;
 288    image->format = rb->Format;
 289    image->offset = 0;
 290    image->data = loaderPrivate;
 291    intel_region_reference(&image->region, irb->mt->region);
 292
 293    switch (image->format) {
 294    case MESA_FORMAT_RGB565:
 295       image->dri_format = __DRI_IMAGE_FORMAT_RGB565;
 296       break;
 297    case MESA_FORMAT_XRGB8888:
 298       image->dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
 299       break;
 300    case MESA_FORMAT_ARGB8888:
 301       image->dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
 302       break;
 303    case MESA_FORMAT_RGBA8888_REV:
 304       image->dri_format = __DRI_IMAGE_FORMAT_ABGR8888;
 305       break;
 306    case MESA_FORMAT_R8:
 307       image->dri_format = __DRI_IMAGE_FORMAT_R8;
 308       break;
 309    case MESA_FORMAT_RG88:
 310       image->dri_format = __DRI_IMAGE_FORMAT_GR88;
 311       break;
 312    }
 313
 314    return image;
 315 }
 316
 317 static void
 318 intel_destroy_image(__DRIimage *image)
 319 {
 320     intel_region_release(&image->region);
 321     FREE(image);
 322 }
 323
 324 static __DRIimage *
 325 intel_create_image(__DRIscreen *screen,
 326                    int width, int height, int format,
 327                    unsigned int use,
 328                    void *loaderPrivate)
 329 {
 330    __DRIimage *image;
 331    struct intel_screen *intelScreen = screen->driverPrivate;
 332    uint32_t tiling;
 333    int cpp;
 334
 335    tiling = I915_TILING_X;
 336    if (use & __DRI_IMAGE_USE_CURSOR) {
 337       if (width != 64 || height != 64)
 338          return NULL;
 339       tiling = I915_TILING_NONE;
 340    }
 341
 342    /* We only support write for cursor drm images */
 343    if ((use & __DRI_IMAGE_USE_WRITE) &&
 344        use != (__DRI_IMAGE_USE_WRITE | __DRI_IMAGE_USE_CURSOR))
 345       return NULL;
 346
 347    image = intel_allocate_image(format, loaderPrivate);
 348    image->usage = use;
 349    cpp = _mesa_get_format_bytes(image->format);
 350    image->region =
 351       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 352    if (image->region == NULL) {
 353       FREE(image);
 354       return NULL;
 355    }
 356
 357    return image;
 358 }
 359
 360 static GLboolean
 361 intel_query_image(__DRIimage *image, int attrib, int *value)
 362 {
 363    switch (attrib) {
 364    case __DRI_IMAGE_ATTRIB_STRIDE:
 365       *value = image->region->pitch * image->region->cpp;
 366       return true;
 367    case __DRI_IMAGE_ATTRIB_HANDLE:
 368       *value = image->region->bo->handle;
 369       return true;
 370    case __DRI_IMAGE_ATTRIB_NAME:
 371       return intel_region_flink(image->region, (uint32_t *) value);
 372    case __DRI_IMAGE_ATTRIB_FORMAT:
 373       *value = image->dri_format;
 374       return true;
 375    case __DRI_IMAGE_ATTRIB_WIDTH:
 376       *value = image->region->width;
 377       return true;
 378    case __DRI_IMAGE_ATTRIB_HEIGHT:
 379       *value = image->region->height;
 380       return true;
 381   default:
 382       return false;
 383    }
 384 }
 385
 386 static __DRIimage *
 387 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 388 {
 389    __DRIimage *image;
 390
 391    image = CALLOC(sizeof *image);
 392    if (image == NULL)
 393       return NULL;
 394
 395    intel_region_reference(&image->region, orig_image->region);
 396    if (image->region == NULL) {
 397       FREE(image);
 398       return NULL;
 399    }
 400
 401    image->internal_format = orig_image->internal_format;
 402    image->usage           = orig_image->usage;
 403    image->dri_format      = orig_image->dri_format;
 404    image->format          = orig_image->format;
 405    image->offset          = orig_image->offset;
 406    image->data            = loaderPrivate;
 407
 408    return image;
 409 }
 410
 411 static GLboolean
 412 intel_validate_usage(__DRIimage *image, unsigned int use)
 413 {
 414    if (use & __DRI_IMAGE_USE_CURSOR) {
 415       if (image->region->width != 64 || image->region->height != 64)
 416          return GL_FALSE;
 417    }
 418
 419    /* We only support write for cursor drm images */
 420    if ((use & __DRI_IMAGE_USE_WRITE) &&
 421        use != (__DRI_IMAGE_USE_WRITE | __DRI_IMAGE_USE_CURSOR))
 422       return GL_FALSE;
 423
 424    return GL_TRUE;
 425 }
 426
 427 static int
 428 intel_image_write(__DRIimage *image, const void *buf, size_t count)
 429 {
 430    if (image->region->map_refcount)
 431       return -1;
 432    if (!(image->usage & __DRI_IMAGE_USE_WRITE))
 433       return -1;
 434
 435    drm_intel_bo_map(image->region->bo, true);
 436    memcpy(image->region->bo->virtual, buf, count);
 437    drm_intel_bo_unmap(image->region->bo);
 438
 439    return 0;
 440 }
 441
 442 static __DRIimage *
 443 intel_create_sub_image(__DRIimage *parent,
 444                        int width, int height, int dri_format,
 445                        int offset, int pitch, void *loaderPrivate)
 446 {
 447     __DRIimage *image;
 448     int cpp;
 449     uint32_t mask_x, mask_y;
 450
 451     image = intel_allocate_image(dri_format, loaderPrivate);
 452     cpp = _mesa_get_format_bytes(image->format);
 453     if (offset + height * cpp * pitch > parent->region->bo->size) {
 454        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 455        FREE(image);
 456        return NULL;
 457     }
 458
 459     image->region = calloc(sizeof(*image->region), 1);
 460     if (image->region == NULL) {
 461        FREE(image);
 462        return NULL;
 463     }
 464
 465     image->region->cpp = _mesa_get_format_bytes(image->format);
 466     image->region->width = width;
 467     image->region->height = height;
 468     image->region->pitch = pitch;
 469     image->region->refcount = 1;
 470     image->region->bo = parent->region->bo;
 471     drm_intel_bo_reference(image->region->bo);
 472     image->region->tiling = parent->region->tiling;
 473     image->region->screen = parent->region->screen;
 474     image->offset = offset;
 475
 476     intel_region_get_tile_masks(image->region, &mask_x, &mask_y);
 477     if (offset & mask_x)
 478        _mesa_warning(NULL,
 479                      "intel_create_sub_image: offset not on tile boundary");
 480
 481     return image;
 482 }
 483
 484 static struct __DRIimageExtensionRec intelImageExtension = {
 485     { __DRI_IMAGE, 5 },
 486     intel_create_image_from_name,
 487     intel_create_image_from_renderbuffer,
 488     intel_destroy_image,
 489     intel_create_image,
 490     intel_query_image,
 491     intel_dup_image,
 492     intel_validate_usage,
 493     intel_image_write,
 494     intel_create_sub_image
 495 };
 496
 497 static const __DRIextension *intelScreenExtensions[] = {
 498     &intelTexBufferExtension.base,
 499     &intelFlushExtension.base,
 500     &intelImageExtension.base,
 501     &dri2ConfigQueryExtension.base,
 502     NULL
 503 };
 504
 505 static bool
 506 intel_get_param(__DRIscreen *psp, int param, int *value)
 507 {
 508    int ret;
 509    struct drm_i915_getparam gp;
 510
 511    memset(&gp, 0, sizeof(gp));
 512    gp.param = param;
 513    gp.value = value;
 514
 515    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 516    if (ret) {
 517       if (ret != -EINVAL)
 518          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 519       return false;
 520    }
 521
 522    return true;
 523 }
 524
 525 static bool
 526 intel_get_boolean(__DRIscreen *psp, int param)
 527 {
 528    int value = 0;
 529    return intel_get_param(psp, param, &value) && value;
 530 }
 531
 532 static void
 533 nop_callback(GLuint key, void *data, void *userData)
 534 {
 535 }
 536
 537 static void
 538 intelDestroyScreen(__DRIscreen * sPriv)
 539 {
 540    struct intel_screen *intelScreen = sPriv->driverPrivate;
 541
 542    dri_bufmgr_destroy(intelScreen->bufmgr);
 543    driDestroyOptionInfo(&intelScreen->optionCache);
 544
 545    /* Some regions may still have references to them at this point, so
 546     * flush the hash table to prevent _mesa_DeleteHashTable() from
 547     * complaining about the hash not being empty; */
 548    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 549    _mesa_DeleteHashTable(intelScreen->named_regions);
 550
 551    FREE(intelScreen);
 552    sPriv->driverPrivate = NULL;
 553 }
 554
 555
 556 /**
 557  * This is called when we need to set up GL rendering to a new X window.
 558  */
 559 static GLboolean
 560 intelCreateBuffer(__DRIscreen * driScrnPriv,
 561                   __DRIdrawable * driDrawPriv,
 562                   const struct gl_config * mesaVis, GLboolean isPixmap)
 563 {
 564    struct intel_renderbuffer *rb;
 565    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 566    gl_format rgbFormat;
 567    unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
 568    struct gl_framebuffer *fb;
 569
 570    if (isPixmap)
 571       return false;
 572
 573    fb = CALLOC_STRUCT(gl_framebuffer);
 574    if (!fb)
 575       return false;
 576
 577    _mesa_initialize_window_framebuffer(fb, mesaVis);
 578
 579    if (mesaVis->redBits == 5)
 580       rgbFormat = MESA_FORMAT_RGB565;
 581    else if (mesaVis->alphaBits == 0)
 582       rgbFormat = MESA_FORMAT_XRGB8888;
 583    else
 584       rgbFormat = MESA_FORMAT_ARGB8888;
 585
 586    /* setup the hardware-based renderbuffers */
 587    rb = intel_create_renderbuffer(rgbFormat, num_samples);
 588    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 589
 590    if (mesaVis->doubleBufferMode) {
 591       rb = intel_create_renderbuffer(rgbFormat, num_samples);
 592       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 593    }
 594
 595    /*
 596     * Assert here that the gl_config has an expected depth/stencil bit
 597     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 598     * which constructs the advertised configs.)
 599     */
 600    if (mesaVis->depthBits == 24) {
 601       assert(mesaVis->stencilBits == 8);
 602
 603       if (screen->hw_has_separate_stencil) {
 604          rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
 605                                                 num_samples);
 606          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 607          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
 608                                                 num_samples);
 609          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 610       } else {
 611          /*
 612           * Use combined depth/stencil. Note that the renderbuffer is
 613           * attached to two attachment points.
 614           */
 615          rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
 616                                                 num_samples);
 617          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 618          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 619       }
 620    }
 621    else if (mesaVis->depthBits == 16) {
 622       assert(mesaVis->stencilBits == 0);
 623       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
 624                                              num_samples);
 625       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 626    }
 627    else {
 628       assert(mesaVis->depthBits == 0);
 629       assert(mesaVis->stencilBits == 0);
 630    }
 631
 632    /* now add any/all software-based renderbuffers we may need */
 633    _swrast_add_soft_renderbuffers(fb,
 634                                   false, /* never sw color */
 635                                   false, /* never sw depth */
 636                                   false, /* never sw stencil */
 637                                   mesaVis->accumRedBits > 0,
 638                                   false, /* never sw alpha */
 639                                   false  /* never sw aux */ );
 640    driDrawPriv->driverPrivate = fb;
 641
 642    return true;
 643 }
 644
 645 static void
 646 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 647 {
 648     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 649
 650     _mesa_reference_framebuffer(&fb, NULL);
 651 }
 652
 653 /* There are probably better ways to do this, such as an
 654  * init-designated function to register chipids and createcontext
 655  * functions.
 656  */
 657 extern bool
 658 i830CreateContext(const struct gl_config *mesaVis,
 659                   __DRIcontext *driContextPriv,
 660                   void *sharedContextPrivate);
 661
 662 extern bool
 663 i915CreateContext(int api,
 664                   const struct gl_config *mesaVis,
 665                   __DRIcontext *driContextPriv,
 666                   unsigned major_version,
 667                   unsigned minor_version,
 668                   unsigned *error,
 669                   void *sharedContextPrivate);
 670 extern bool
 671 brwCreateContext(int api,
 672                  const struct gl_config *mesaVis,
 673                  __DRIcontext *driContextPriv,
 674                  unsigned major_version,
 675                  unsigned minor_version,
 676                  unsigned *error,
 677                  void *sharedContextPrivate);
 678
 679 static GLboolean
 680 intelCreateContext(gl_api api,
 681                    const struct gl_config * mesaVis,
 682                    __DRIcontext * driContextPriv,
 683                    unsigned major_version,
 684                    unsigned minor_version,
 685                    uint32_t flags,
 686                    unsigned *error,
 687                    void *sharedContextPrivate)
 688 {
 689    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 690    struct intel_screen *intelScreen = sPriv->driverPrivate;
 691    bool success = false;
 692
 693    switch (api) {
 694    case API_OPENGL:
 695    case API_OPENGLES:
 696       break;
 697    case API_OPENGLES2:
 698 #ifdef I915
 699       if (!IS_9XX(intelScreen->deviceID)) {
 700          *error = __DRI_CTX_ERROR_BAD_API;
 701          return false;
 702       }
 703 #endif
 704       break;
 705    case API_OPENGL_CORE:
 706       *error = __DRI_CTX_ERROR_BAD_API;
 707       return GL_FALSE;
 708    }
 709
 710 #ifdef I915
 711    if (IS_9XX(intelScreen->deviceID)) {
 712       success = i915CreateContext(api, mesaVis, driContextPriv,
 713                                   major_version, minor_version, error,
 714                                   sharedContextPrivate);
 715    } else {
 716       switch (api) {
 717       case API_OPENGL:
 718          if (major_version > 1 || minor_version > 3) {
 719             *error = __DRI_CTX_ERROR_BAD_VERSION;
 720             return false;
 721          }
 722          break;
 723       case API_OPENGLES:
 724          break;
 725       default:
 726          *error = __DRI_CTX_ERROR_BAD_API;
 727          return false;
 728       }
 729
 730       intelScreen->no_vbo = true;
 731       success = i830CreateContext(mesaVis, driContextPriv,
 732                                   sharedContextPrivate);
 733       if (!success) {
 734          *error = __DRI_CTX_ERROR_NO_MEMORY;
 735          return false;
 736       }
 737    }
 738 #else
 739    success = brwCreateContext(api, mesaVis,
 740                               driContextPriv,
 741                               major_version, minor_version, error,
 742                               sharedContextPrivate);
 743 #endif
 744
 745    if (success) {
 746       struct gl_context *ctx =
 747          (struct gl_context *) driContextPriv->driverPrivate;
 748
 749       _mesa_compute_version(ctx);
 750       if (ctx->Version >= major_version * 10 + minor_version) {
 751          return true;
 752       }
 753
 754       *error = __DRI_CTX_ERROR_BAD_VERSION;
 755       intelDestroyContext(driContextPriv);
 756    } else {
 757       *error = __DRI_CTX_ERROR_NO_MEMORY;
 758       fprintf(stderr, "Unrecognized deviceID 0x%x\n", intelScreen->deviceID);
 759    }
 760
 761    return false;
 762 }
 763
 764 static bool
 765 intel_init_bufmgr(struct intel_screen *intelScreen)
 766 {
 767    __DRIscreen *spriv = intelScreen->driScrnPriv;
 768    int num_fences = 0;
 769
 770    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 771
 772    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 773    if (intelScreen->bufmgr == NULL) {
 774       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 775               __func__, __LINE__);
 776       return false;
 777    }
 778
 779    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 780        num_fences == 0) {
 781       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 782       return false;
 783    }
 784
 785    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 786
 787    intelScreen->named_regions = _mesa_NewHashTable();
 788
 789    intelScreen->relaxed_relocations = 0;
 790    intelScreen->relaxed_relocations |=
 791       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 792
 793    return true;
 794 }
 795
 796 /**
 797  * Override intel_screen.hw_has_separate_stencil with environment variable
 798  * INTEL_SEPARATE_STENCIL.
 799  *
 800  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 801  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 802  * is ignored.
 803  */
 804 static void
 805 intel_override_separate_stencil(struct intel_screen *screen)
 806 {
 807    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 808    if (!s) {
 809       return;
 810    } else if (!strncmp("0", s, 2)) {
 811       screen->hw_has_separate_stencil = false;
 812    } else if (!strncmp("1", s, 2)) {
 813       screen->hw_has_separate_stencil = true;
 814    } else {
 815       fprintf(stderr,
 816               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 817               "invalid value and is ignored", s);
 818    }
 819 }
 820
 821 static bool
 822 intel_detect_swizzling(struct intel_screen *screen)
 823 {
 824    drm_intel_bo *buffer;
 825    unsigned long flags = 0;
 826    unsigned long aligned_pitch;
 827    uint32_t tiling = I915_TILING_X;
 828    uint32_t swizzle_mode = 0;
 829
 830    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 831                                      64, 64, 4,
 832                                      &tiling, &aligned_pitch, flags);
 833    if (buffer == NULL)
 834       return false;
 835
 836    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 837    drm_intel_bo_unreference(buffer);
 838
 839    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 840       return false;
 841    else
 842       return true;
 843 }
 844
 845 static __DRIconfig**
 846 intel_screen_make_configs(__DRIscreen *dri_screen)
 847 {
 848    static const GLenum back_buffer_modes[] = {
 849        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 850    };
 851
 852    static const uint8_t singlesample_samples[1] = {0};
 853    static const uint8_t multisample_samples[2]  = {4, 8};
 854
 855    struct intel_screen *screen = dri_screen->driverPrivate;
 856    GLenum fb_format[3];
 857    GLenum fb_type[3];
 858    uint8_t depth_bits[4], stencil_bits[4];
 859    __DRIconfig **configs = NULL;
 860
 861    fb_format[0] = GL_RGB;
 862    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 863
 864    fb_format[1] = GL_BGR;
 865    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 866
 867    fb_format[2] = GL_BGRA;
 868    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 869
 870    /* Generate singlesample configs without accumulation buffer. */
 871    for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
 872       __DRIconfig **new_configs;
 873       const int num_depth_stencil_bits = 2;
 874
 875       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 876        * buffer that has a different number of bits per pixel than the color
 877        * buffer.  This isn't yet supported here.
 878        */
 879       depth_bits[0] = 0;
 880       stencil_bits[0] = 0;
 881
 882       if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
 883          depth_bits[1] = 16;
 884          stencil_bits[1] = 0;
 885       } else {
 886          depth_bits[1] = 24;
 887          stencil_bits[1] = 8;
 888       }
 889
 890       new_configs = driCreateConfigs(fb_format[i], fb_type[i],
 891                                      depth_bits,
 892                                      stencil_bits,
 893                                      num_depth_stencil_bits,
 894                                      back_buffer_modes,
 895                                      ARRAY_SIZE(back_buffer_modes),
 896                                      singlesample_samples, 1,
 897                                      false);
 898       configs = driConcatConfigs(configs, new_configs);
 899    }
 900
 901    /* Generate the minimum possible set of configs that include an
 902     * accumulation buffer.
 903     */
 904    for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
 905       __DRIconfig **new_configs;
 906
 907       if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
 908          depth_bits[0] = 16;
 909          stencil_bits[0] = 0;
 910       } else {
 911          depth_bits[0] = 24;
 912          stencil_bits[0] = 8;
 913       }
 914
 915       new_configs = driCreateConfigs(fb_format[i], fb_type[i],
 916                                      depth_bits, stencil_bits, 1,
 917                                      back_buffer_modes + 1, 1,
 918                                      singlesample_samples, 1,
 919                                      true);
 920       configs = driConcatConfigs(configs, new_configs);
 921    }
 922
 923    /* Generate multisample configs.
 924     *
 925     * This loop breaks early, and hence is a no-op, on gen < 6.
 926     *
 927     * Multisample configs must follow the singlesample configs in order to
 928     * work around an X server bug present in 1.12. The X server chooses to
 929     * associate the first listed RGBA888-Z24S8 config, regardless of its
 930     * sample count, with the 32-bit depth visual used for compositing.
 931     *
 932     * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
 933     * supported.  Singlebuffer configs are not supported because no one wants
 934     * them. GLX_SWAP_COPY_OML is not supported due to page flipping.
 935     */
 936    for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
 937       if (screen->gen < 6)
 938          break;
 939
 940       __DRIconfig **new_configs;
 941       const int num_depth_stencil_bits = 2;
 942       int num_msaa_modes = 0;
 943
 944       depth_bits[0] = 0;
 945       stencil_bits[0] = 0;
 946
 947       if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
 948          depth_bits[1] = 16;
 949          stencil_bits[1] = 0;
 950       } else {
 951          depth_bits[1] = 24;
 952          stencil_bits[1] = 8;
 953       }
 954
 955       if (screen->gen >= 7)
 956          num_msaa_modes = 2;
 957       else if (screen->gen == 6)
 958          num_msaa_modes = 1;
 959
 960       new_configs = driCreateConfigs(fb_format[i], fb_type[i],
 961                                      depth_bits,
 962                                      stencil_bits,
 963                                      num_depth_stencil_bits,
 964                                      back_buffer_modes + 1, 1,
 965                                      multisample_samples,
 966                                      num_msaa_modes,
 967                                      false);
 968       configs = driConcatConfigs(configs, new_configs);
 969    }
 970
 971    if (configs == NULL) {
 972       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 973               __LINE__);
 974       return NULL;
 975    }
 976
 977    return configs;
 978 }
 979
 980 /**
 981  * This is the driver specific part of the createNewScreen entry point.
 982  * Called when using DRI2.
 983  *
 984  * \return the struct gl_config supported by this driver
 985  */
 986 static const
 987 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 988 {
 989    struct intel_screen *intelScreen;
 990    unsigned int api_mask;
 991
 992    if (psp->dri2.loader->base.version <= 2 ||
 993        psp->dri2.loader->getBuffersWithFormat == NULL) {
 994       fprintf(stderr,
 995               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
 996               "support required\n");
 997       return false;
 998    }
 999
1000    /* Allocate the private area */
1001    intelScreen = CALLOC(sizeof *intelScreen);
1002    if (!intelScreen) {
1003       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1004       return false;
1005    }
1006    /* parse information in __driConfigOptions */
1007    driParseOptionInfo(&intelScreen->optionCache,
1008                       __driConfigOptions, __driNConfigOptions);
1009
1010    intelScreen->driScrnPriv = psp;
1011    psp->driverPrivate = (void *) intelScreen;
1012
1013    if (!intel_init_bufmgr(intelScreen))
1014        return false;
1015
1016    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1017
1018    intelScreen->kernel_has_gen7_sol_reset =
1019       intel_get_boolean(intelScreen->driScrnPriv,
1020                         I915_PARAM_HAS_GEN7_SOL_RESET);
1021
1022    if (IS_GEN7(intelScreen->deviceID)) {
1023       intelScreen->gen = 7;
1024    } else if (IS_GEN6(intelScreen->deviceID)) {
1025       intelScreen->gen = 6;
1026    } else if (IS_GEN5(intelScreen->deviceID)) {
1027       intelScreen->gen = 5;
1028    } else if (IS_965(intelScreen->deviceID)) {
1029       intelScreen->gen = 4;
1030    } else if (IS_9XX(intelScreen->deviceID)) {
1031       intelScreen->gen = 3;
1032    } else {
1033       intelScreen->gen = 2;
1034    }
1035
1036    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1037    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1038
1039    int has_llc = 0;
1040    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1041                                   &has_llc);
1042    if (success && has_llc)
1043       intelScreen->hw_has_llc = true;
1044    else if (!success && intelScreen->gen >= 6)
1045       intelScreen->hw_has_llc = true;
1046
1047    intel_override_separate_stencil(intelScreen);
1048
1049    api_mask = (1 << __DRI_API_OPENGL);
1050 #if FEATURE_ES1
1051    api_mask |= (1 << __DRI_API_GLES);
1052 #endif
1053 #if FEATURE_ES2
1054    api_mask |= (1 << __DRI_API_GLES2);
1055 #endif
1056
1057    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
1058       psp->api_mask = api_mask;
1059
1060    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1061
1062    psp->extensions = intelScreenExtensions;
1063
1064    return (const __DRIconfig**) intel_screen_make_configs(psp);
1065 }
1066
1067 struct intel_buffer {
1068    __DRIbuffer base;
1069    struct intel_region *region;
1070 };
1071
1072 static __DRIbuffer *
1073 intelAllocateBuffer(__DRIscreen *screen,
1074                     unsigned attachment, unsigned format,
1075                     int width, int height)
1076 {
1077    struct intel_buffer *intelBuffer;
1078    struct intel_screen *intelScreen = screen->driverPrivate;
1079
1080    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1081           attachment == __DRI_BUFFER_BACK_LEFT);
1082
1083    intelBuffer = CALLOC(sizeof *intelBuffer);
1084    if (intelBuffer == NULL)
1085       return NULL;
1086
1087    /* The front and back buffers are color buffers, which are X tiled. */
1088    intelBuffer->region = intel_region_alloc(intelScreen,
1089                                             I915_TILING_X,
1090                                             format / 8,
1091                                             width,
1092                                             height,
1093                                             true);
1094
1095    if (intelBuffer->region == NULL) {
1096            FREE(intelBuffer);
1097            return NULL;
1098    }
1099
1100    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1101
1102    intelBuffer->base.attachment = attachment;
1103    intelBuffer->base.cpp = intelBuffer->region->cpp;
1104    intelBuffer->base.pitch =
1105          intelBuffer->region->pitch * intelBuffer->region->cpp;
1106
1107    return &intelBuffer->base;
1108 }
1109
1110 static void
1111 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1112 {
1113    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1114
1115    intel_region_release(&intelBuffer->region);
1116    free(intelBuffer);
1117 }
1118
1119
1120 const struct __DriverAPIRec driDriverAPI = {
1121    .InitScreen           = intelInitScreen2,
1122    .DestroyScreen        = intelDestroyScreen,
1123    .CreateContext        = intelCreateContext,
1124    .DestroyContext       = intelDestroyContext,
1125    .CreateBuffer         = intelCreateBuffer,
1126    .DestroyBuffer        = intelDestroyBuffer,
1127    .MakeCurrent          = intelMakeCurrent,
1128    .UnbindContext        = intelUnbindContext,
1129    .AllocateBuffer       = intelAllocateBuffer,
1130    .ReleaseBuffer        = intelReleaseBuffer
1131 };
1132
1133 /* This is the table of extensions that the loader will dlsym() for. */
1134 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1135     &driCoreExtension.base,
1136     &driDRI2Extension.base,
1137     NULL
1138 };