src/mesa/drivers/dri/i915/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 <time.h>
  30 #include "main/glheader.h"
  31 #include "main/context.h"
  32 #include "main/framebuffer.h"
  33 #include "main/renderbuffer.h"
  34 #include "main/texobj.h"
  35 #include "main/hash.h"
  36 #include "main/fbobject.h"
  37 #include "main/version.h"
  38 #include "swrast/s_renderbuffer.h"
  39
  40 #include "utils.h"
  41 #include "xmlpool.h"
  42
  43 PUBLIC const char __driConfigOptions[] =
  44    DRI_CONF_BEGIN
  45    DRI_CONF_SECTION_PERFORMANCE
  46       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  47       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  48        * DRI_CONF_BO_REUSE_ALL
  49        */
  50       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  51          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  52             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  53             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  54          DRI_CONF_DESC_END
  55       DRI_CONF_OPT_END
  56
  57       DRI_CONF_OPT_BEGIN_B(early_z, "false")
  58          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  59       DRI_CONF_OPT_END
  60
  61    DRI_CONF_SECTION_END
  62    DRI_CONF_SECTION_QUALITY
  63       DRI_CONF_FORCE_S3TC_ENABLE("false")
  64    DRI_CONF_SECTION_END
  65    DRI_CONF_SECTION_DEBUG
  66       DRI_CONF_NO_RAST("false")
  67       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  68       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  69       DRI_CONF_DISABLE_THROTTLING("false")
  70       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  71       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  72       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  73
  74       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  75          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  76       DRI_CONF_OPT_END
  77    DRI_CONF_SECTION_END
  78 DRI_CONF_END;
  79
  80 #include "intel_batchbuffer.h"
  81 #include "intel_buffers.h"
  82 #include "intel_bufmgr.h"
  83 #include "intel_chipset.h"
  84 #include "intel_fbo.h"
  85 #include "intel_mipmap_tree.h"
  86 #include "intel_screen.h"
  87 #include "intel_tex.h"
  88 #include "intel_regions.h"
  89
  90 #include "i915_drm.h"
  91
  92 #ifdef USE_NEW_INTERFACE
  93 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  94 #endif /*USE_NEW_INTERFACE */
  95
  96 /**
  97  * For debugging purposes, this returns a time in seconds.
  98  */
  99 double
 100 get_time(void)
 101 {
 102    struct timespec tp;
 103
 104    clock_gettime(CLOCK_MONOTONIC, &tp);
 105
 106    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 107 }
 108
 109 void
 110 aub_dump_bmp(struct gl_context *ctx)
 111 {
 112    struct gl_framebuffer *fb = ctx->DrawBuffer;
 113
 114    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 115       struct intel_renderbuffer *irb =
 116          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 117
 118       if (irb && irb->mt) {
 119          enum aub_dump_bmp_format format;
 120
 121          switch (irb->Base.Base.Format) {
 122          case MESA_FORMAT_ARGB8888:
 123          case MESA_FORMAT_XRGB8888:
 124             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 125             break;
 126          default:
 127             continue;
 128          }
 129
 130          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 131          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 132                                        irb->draw_x,
 133                                        irb->draw_y,
 134                                        irb->Base.Base.Width,
 135                                        irb->Base.Base.Height,
 136                                        format,
 137                                        irb->mt->region->pitch,
 138                                        0);
 139       }
 140    }
 141 }
 142
 143 static const __DRItexBufferExtension intelTexBufferExtension = {
 144    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 145
 146    .setTexBuffer        = intelSetTexBuffer,
 147    .setTexBuffer2       = intelSetTexBuffer2,
 148    .releaseTexBuffer    = NULL,
 149 };
 150
 151 static void
 152 intelDRI2Flush(__DRIdrawable *drawable)
 153 {
 154    GET_CURRENT_CONTEXT(ctx);
 155    struct intel_context *intel = intel_context(ctx);
 156    if (intel == NULL)
 157       return;
 158
 159    INTEL_FIREVERTICES(intel);
 160
 161    intel->need_throttle = true;
 162
 163    if (intel->batch.used)
 164       intel_batchbuffer_flush(intel);
 165
 166    if (INTEL_DEBUG & DEBUG_AUB) {
 167       aub_dump_bmp(ctx);
 168    }
 169 }
 170
 171 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 172     .base = { __DRI2_FLUSH, 3 },
 173
 174     .flush              = intelDRI2Flush,
 175     .invalidate         = dri2InvalidateDrawable,
 176 };
 177
 178 static struct intel_image_format intel_image_formats[] = {
 179    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 180      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 181
 182    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 183      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 184
 185    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 186      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 187        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 188        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 189
 190    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 191      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 192        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 193        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 194
 195    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 197        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 198        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 199
 200    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 201      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 202        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 203        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 204
 205    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 206      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 207        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 208        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 209
 210    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 213
 214    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 215      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 216        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 217
 218    /* For YUYV buffers, we set up two overlapping DRI images and treat
 219     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 220     * samples YU or YV pairs and places Y into the R component, while
 221     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 222     * places U into the G component and V into A.  This lets the
 223     * texture sampler interpolate the Y components correctly when
 224     * sampling from plane 0, and interpolate U and V correctly when
 225     * sampling from plane 1. */
 226    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 227      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 228        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 229 };
 230
 231 static __DRIimage *
 232 intel_allocate_image(int dri_format, void *loaderPrivate)
 233 {
 234     __DRIimage *image;
 235
 236     image = calloc(1, sizeof *image);
 237     if (image == NULL)
 238         return NULL;
 239
 240     image->dri_format = dri_format;
 241     image->offset = 0;
 242
 243     switch (dri_format) {
 244     case __DRI_IMAGE_FORMAT_RGB565:
 245        image->format = MESA_FORMAT_RGB565;
 246        break;
 247     case __DRI_IMAGE_FORMAT_XRGB8888:
 248        image->format = MESA_FORMAT_XRGB8888;
 249        break;
 250     case __DRI_IMAGE_FORMAT_ARGB8888:
 251        image->format = MESA_FORMAT_ARGB8888;
 252        break;
 253     case __DRI_IMAGE_FORMAT_ABGR8888:
 254        image->format = MESA_FORMAT_RGBA8888_REV;
 255        break;
 256     case __DRI_IMAGE_FORMAT_XBGR8888:
 257        image->format = MESA_FORMAT_RGBX8888_REV;
 258        break;
 259     case __DRI_IMAGE_FORMAT_R8:
 260        image->format = MESA_FORMAT_R8;
 261        break;
 262     case __DRI_IMAGE_FORMAT_GR88:
 263        image->format = MESA_FORMAT_GR88;
 264        break;
 265     case __DRI_IMAGE_FORMAT_NONE:
 266        image->format = MESA_FORMAT_NONE;
 267        break;
 268     default:
 269        free(image);
 270        return NULL;
 271     }
 272
 273     image->internal_format = _mesa_get_format_base_format(image->format);
 274     image->data = loaderPrivate;
 275
 276     return image;
 277 }
 278
 279 /**
 280  * Sets up a DRIImage structure to point to our shared image in a region
 281  */
 282 static void
 283 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 284                                    struct intel_mipmap_tree *mt, GLuint level,
 285                                    GLuint zoffset)
 286 {
 287    unsigned int draw_x, draw_y;
 288    uint32_t mask_x, mask_y;
 289
 290    intel_miptree_check_level_layer(mt, level, zoffset);
 291
 292    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 293    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 294
 295    image->width = mt->level[level].width;
 296    image->height = mt->level[level].height;
 297    image->tile_x = draw_x & mask_x;
 298    image->tile_y = draw_y & mask_y;
 299
 300    image->offset = intel_region_get_aligned_offset(mt->region,
 301                                                    draw_x & ~mask_x,
 302                                                    draw_y & ~mask_y,
 303                                                    false);
 304
 305    intel_region_reference(&image->region, mt->region);
 306 }
 307
 308 static void
 309 intel_setup_image_from_dimensions(__DRIimage *image)
 310 {
 311    image->width    = image->region->width;
 312    image->height   = image->region->height;
 313    image->tile_x = 0;
 314    image->tile_y = 0;
 315 }
 316
 317 static inline uint32_t
 318 intel_dri_format(GLuint format)
 319 {
 320    switch (format) {
 321    case MESA_FORMAT_RGB565:
 322       return __DRI_IMAGE_FORMAT_RGB565;
 323    case MESA_FORMAT_XRGB8888:
 324       return __DRI_IMAGE_FORMAT_XRGB8888;
 325    case MESA_FORMAT_ARGB8888:
 326       return __DRI_IMAGE_FORMAT_ARGB8888;
 327    case MESA_FORMAT_RGBA8888_REV:
 328       return __DRI_IMAGE_FORMAT_ABGR8888;
 329    case MESA_FORMAT_R8:
 330       return __DRI_IMAGE_FORMAT_R8;
 331    case MESA_FORMAT_RG88:
 332       return __DRI_IMAGE_FORMAT_GR88;
 333    }
 334
 335    return MESA_FORMAT_NONE;
 336 }
 337
 338 static __DRIimage *
 339 intel_create_image_from_name(__DRIscreen *screen,
 340                              int width, int height, int format,
 341                              int name, int pitch, void *loaderPrivate)
 342 {
 343     struct intel_screen *intelScreen = screen->driverPrivate;
 344     __DRIimage *image;
 345     int cpp;
 346
 347     image = intel_allocate_image(format, loaderPrivate);
 348     if (image == NULL)
 349        return NULL;
 350
 351     if (image->format == MESA_FORMAT_NONE)
 352        cpp = 1;
 353     else
 354        cpp = _mesa_get_format_bytes(image->format);
 355     image->region = intel_region_alloc_for_handle(intelScreen,
 356                                                   cpp, width, height,
 357                                                   pitch * cpp, name, "image");
 358     if (image->region == NULL) {
 359        free(image);
 360        return NULL;
 361     }
 362
 363     intel_setup_image_from_dimensions(image);
 364
 365     return image;
 366 }
 367
 368 static __DRIimage *
 369 intel_create_image_from_renderbuffer(__DRIcontext *context,
 370                                      int renderbuffer, void *loaderPrivate)
 371 {
 372    __DRIimage *image;
 373    struct intel_context *intel = context->driverPrivate;
 374    struct gl_renderbuffer *rb;
 375    struct intel_renderbuffer *irb;
 376
 377    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 378    if (!rb) {
 379       _mesa_error(&intel->ctx,
 380                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 381       return NULL;
 382    }
 383
 384    irb = intel_renderbuffer(rb);
 385    image = calloc(1, sizeof *image);
 386    if (image == NULL)
 387       return NULL;
 388
 389    image->internal_format = rb->InternalFormat;
 390    image->format = rb->Format;
 391    image->offset = 0;
 392    image->data = loaderPrivate;
 393    intel_region_reference(&image->region, irb->mt->region);
 394    intel_setup_image_from_dimensions(image);
 395    image->dri_format = intel_dri_format(image->format);
 396
 397    rb->NeedsFinishRenderTexture = true;
 398    return image;
 399 }
 400
 401 static __DRIimage *
 402 intel_create_image_from_texture(__DRIcontext *context, int target,
 403                                 unsigned texture, int zoffset,
 404                                 int level,
 405                                 unsigned *error,
 406                                 void *loaderPrivate)
 407 {
 408    __DRIimage *image;
 409    struct intel_context *intel = context->driverPrivate;
 410    struct gl_texture_object *obj;
 411    struct intel_texture_object *iobj;
 412    GLuint face = 0;
 413
 414    obj = _mesa_lookup_texture(&intel->ctx, texture);
 415    if (!obj || obj->Target != target) {
 416       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 417       return NULL;
 418    }
 419
 420    if (target == GL_TEXTURE_CUBE_MAP)
 421       face = zoffset;
 422
 423    _mesa_test_texobj_completeness(&intel->ctx, obj);
 424    iobj = intel_texture_object(obj);
 425    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 426       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 427       return NULL;
 428    }
 429
 430    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 431       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 432       return NULL;
 433    }
 434
 435    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 436       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 437       return NULL;
 438    }
 439    image = calloc(1, sizeof *image);
 440    if (image == NULL) {
 441       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 442       return NULL;
 443    }
 444
 445    image->internal_format = obj->Image[face][level]->InternalFormat;
 446    image->format = obj->Image[face][level]->TexFormat;
 447    image->data = loaderPrivate;
 448    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 449    image->dri_format = intel_dri_format(image->format);
 450    if (image->dri_format == MESA_FORMAT_NONE) {
 451       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 452       free(image);
 453       return NULL;
 454    }
 455
 456    *error = __DRI_IMAGE_ERROR_SUCCESS;
 457    return image;
 458 }
 459
 460 static void
 461 intel_destroy_image(__DRIimage *image)
 462 {
 463     intel_region_release(&image->region);
 464     free(image);
 465 }
 466
 467 static __DRIimage *
 468 intel_create_image(__DRIscreen *screen,
 469                    int width, int height, int format,
 470                    unsigned int use,
 471                    void *loaderPrivate)
 472 {
 473    __DRIimage *image;
 474    struct intel_screen *intelScreen = screen->driverPrivate;
 475    uint32_t tiling;
 476    int cpp;
 477
 478    tiling = I915_TILING_X;
 479    if (use & __DRI_IMAGE_USE_CURSOR) {
 480       if (width != 64 || height != 64)
 481          return NULL;
 482       tiling = I915_TILING_NONE;
 483    }
 484
 485    image = intel_allocate_image(format, loaderPrivate);
 486    if (image == NULL)
 487       return NULL;
 488
 489    cpp = _mesa_get_format_bytes(image->format);
 490    image->region =
 491       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 492    if (image->region == NULL) {
 493       free(image);
 494       return NULL;
 495    }
 496
 497    intel_setup_image_from_dimensions(image);
 498
 499    return image;
 500 }
 501
 502 static GLboolean
 503 intel_query_image(__DRIimage *image, int attrib, int *value)
 504 {
 505    switch (attrib) {
 506    case __DRI_IMAGE_ATTRIB_STRIDE:
 507       *value = image->region->pitch;
 508       return true;
 509    case __DRI_IMAGE_ATTRIB_HANDLE:
 510       *value = image->region->bo->handle;
 511       return true;
 512    case __DRI_IMAGE_ATTRIB_NAME:
 513       return intel_region_flink(image->region, (uint32_t *) value);
 514    case __DRI_IMAGE_ATTRIB_FORMAT:
 515       *value = image->dri_format;
 516       return true;
 517    case __DRI_IMAGE_ATTRIB_WIDTH:
 518       *value = image->region->width;
 519       return true;
 520    case __DRI_IMAGE_ATTRIB_HEIGHT:
 521       *value = image->region->height;
 522       return true;
 523    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 524       if (image->planar_format == NULL)
 525          return false;
 526       *value = image->planar_format->components;
 527       return true;
 528    case __DRI_IMAGE_ATTRIB_FD:
 529       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 530          return true;
 531       return false;
 532   default:
 533       return false;
 534    }
 535 }
 536
 537 static __DRIimage *
 538 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 539 {
 540    __DRIimage *image;
 541
 542    image = calloc(1, sizeof *image);
 543    if (image == NULL)
 544       return NULL;
 545
 546    intel_region_reference(&image->region, orig_image->region);
 547    if (image->region == NULL) {
 548       free(image);
 549       return NULL;
 550    }
 551
 552    image->internal_format = orig_image->internal_format;
 553    image->planar_format   = orig_image->planar_format;
 554    image->dri_format      = orig_image->dri_format;
 555    image->format          = orig_image->format;
 556    image->offset          = orig_image->offset;
 557    image->width           = orig_image->width;
 558    image->height          = orig_image->height;
 559    image->tile_x          = orig_image->tile_x;
 560    image->tile_y          = orig_image->tile_y;
 561    image->data            = loaderPrivate;
 562
 563    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 564    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 565
 566    return image;
 567 }
 568
 569 static GLboolean
 570 intel_validate_usage(__DRIimage *image, unsigned int use)
 571 {
 572    if (use & __DRI_IMAGE_USE_CURSOR) {
 573       if (image->region->width != 64 || image->region->height != 64)
 574          return GL_FALSE;
 575    }
 576
 577    return GL_TRUE;
 578 }
 579
 580 static __DRIimage *
 581 intel_create_image_from_names(__DRIscreen *screen,
 582                               int width, int height, int fourcc,
 583                               int *names, int num_names,
 584                               int *strides, int *offsets,
 585                               void *loaderPrivate)
 586 {
 587     struct intel_image_format *f = NULL;
 588     __DRIimage *image;
 589     int i, index;
 590
 591     if (screen == NULL || names == NULL || num_names != 1)
 592         return NULL;
 593
 594     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 595         if (intel_image_formats[i].fourcc == fourcc) {
 596            f = &intel_image_formats[i];
 597         }
 598     }
 599
 600     if (f == NULL)
 601         return NULL;
 602
 603     image = intel_create_image_from_name(screen, width, height,
 604                                          __DRI_IMAGE_FORMAT_NONE,
 605                                          names[0], strides[0],
 606                                          loaderPrivate);
 607
 608    if (image == NULL)
 609       return NULL;
 610
 611     image->planar_format = f;
 612     for (i = 0; i < f->nplanes; i++) {
 613         index = f->planes[i].buffer_index;
 614         image->offsets[index] = offsets[index];
 615         image->strides[index] = strides[index];
 616     }
 617
 618     return image;
 619 }
 620
 621 static __DRIimage *
 622 intel_create_image_from_fds(__DRIscreen *screen,
 623                             int width, int height, int fourcc,
 624                             int *fds, int num_fds, int *strides, int *offsets,
 625                             void *loaderPrivate)
 626 {
 627    struct intel_screen *intelScreen = screen->driverPrivate;
 628    struct intel_image_format *f = NULL;
 629    __DRIimage *image;
 630    int i, index;
 631
 632    if (fds == NULL || num_fds != 1)
 633       return NULL;
 634
 635    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 636       if (intel_image_formats[i].fourcc == fourcc) {
 637          f = &intel_image_formats[i];
 638       }
 639    }
 640
 641    if (f == NULL)
 642       return NULL;
 643
 644    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 645    if (image == NULL)
 646       return NULL;
 647
 648    image->region = intel_region_alloc_for_fd(intelScreen,
 649                                              1, width, height,
 650                                              strides[0], fds[0], "image");
 651    if (image->region == NULL) {
 652       free(image);
 653       return NULL;
 654    }
 655
 656    image->planar_format = f;
 657    for (i = 0; i < f->nplanes; i++) {
 658       index = f->planes[i].buffer_index;
 659       image->offsets[index] = offsets[index];
 660       image->strides[index] = strides[index];
 661    }
 662
 663    return image;
 664 }
 665
 666
 667 static __DRIimage *
 668 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 669 {
 670     int width, height, offset, stride, dri_format, index;
 671     struct intel_image_format *f;
 672     uint32_t mask_x, mask_y;
 673     __DRIimage *image;
 674
 675     if (parent == NULL || parent->planar_format == NULL)
 676         return NULL;
 677
 678     f = parent->planar_format;
 679
 680     if (plane >= f->nplanes)
 681         return NULL;
 682
 683     width = parent->region->width >> f->planes[plane].width_shift;
 684     height = parent->region->height >> f->planes[plane].height_shift;
 685     dri_format = f->planes[plane].dri_format;
 686     index = f->planes[plane].buffer_index;
 687     offset = parent->offsets[index];
 688     stride = parent->strides[index];
 689
 690     image = intel_allocate_image(dri_format, loaderPrivate);
 691     if (image == NULL)
 692        return NULL;
 693
 694     if (offset + height * stride > parent->region->bo->size) {
 695        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 696        free(image);
 697        return NULL;
 698     }
 699
 700     image->region = calloc(sizeof(*image->region), 1);
 701     if (image->region == NULL) {
 702        free(image);
 703        return NULL;
 704     }
 705
 706     image->region->cpp = _mesa_get_format_bytes(image->format);
 707     image->region->width = width;
 708     image->region->height = height;
 709     image->region->pitch = stride;
 710     image->region->refcount = 1;
 711     image->region->bo = parent->region->bo;
 712     drm_intel_bo_reference(image->region->bo);
 713     image->region->tiling = parent->region->tiling;
 714     image->offset = offset;
 715     intel_setup_image_from_dimensions(image);
 716
 717     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 718     if (offset & mask_x)
 719        _mesa_warning(NULL,
 720                      "intel_create_sub_image: offset not on tile boundary");
 721
 722     return image;
 723 }
 724
 725 static struct __DRIimageExtensionRec intelImageExtension = {
 726     .base = { __DRI_IMAGE, 7 },
 727
 728     .createImageFromName                = intel_create_image_from_name,
 729     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 730     .destroyImage                       = intel_destroy_image,
 731     .createImage                        = intel_create_image,
 732     .queryImage                         = intel_query_image,
 733     .dupImage                           = intel_dup_image,
 734     .validateUsage                      = intel_validate_usage,
 735     .createImageFromNames               = intel_create_image_from_names,
 736     .fromPlanar                         = intel_from_planar,
 737     .createImageFromTexture             = intel_create_image_from_texture,
 738     .createImageFromFds                 = intel_create_image_from_fds
 739 };
 740
 741 static const __DRIextension *intelScreenExtensions[] = {
 742     &intelTexBufferExtension.base,
 743     &intelFlushExtension.base,
 744     &intelImageExtension.base,
 745     &dri2ConfigQueryExtension.base,
 746     NULL
 747 };
 748
 749 static bool
 750 intel_get_param(__DRIscreen *psp, int param, int *value)
 751 {
 752    int ret;
 753    struct drm_i915_getparam gp;
 754
 755    memset(&gp, 0, sizeof(gp));
 756    gp.param = param;
 757    gp.value = value;
 758
 759    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 760    if (ret) {
 761       if (ret != -EINVAL)
 762          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 763       return false;
 764    }
 765
 766    return true;
 767 }
 768
 769 static bool
 770 intel_get_boolean(__DRIscreen *psp, int param)
 771 {
 772    int value = 0;
 773    return intel_get_param(psp, param, &value) && value;
 774 }
 775
 776 static void
 777 intelDestroyScreen(__DRIscreen * sPriv)
 778 {
 779    struct intel_screen *intelScreen = sPriv->driverPrivate;
 780
 781    dri_bufmgr_destroy(intelScreen->bufmgr);
 782    driDestroyOptionInfo(&intelScreen->optionCache);
 783
 784    free(intelScreen);
 785    sPriv->driverPrivate = NULL;
 786 }
 787
 788
 789 /**
 790  * This is called when we need to set up GL rendering to a new X window.
 791  */
 792 static GLboolean
 793 intelCreateBuffer(__DRIscreen * driScrnPriv,
 794                   __DRIdrawable * driDrawPriv,
 795                   const struct gl_config * mesaVis, GLboolean isPixmap)
 796 {
 797    struct intel_renderbuffer *rb;
 798    gl_format rgbFormat;
 799    struct gl_framebuffer *fb;
 800
 801    if (isPixmap)
 802       return false;
 803
 804    fb = CALLOC_STRUCT(gl_framebuffer);
 805    if (!fb)
 806       return false;
 807
 808    _mesa_initialize_window_framebuffer(fb, mesaVis);
 809
 810    if (mesaVis->redBits == 5)
 811       rgbFormat = MESA_FORMAT_RGB565;
 812    else if (mesaVis->sRGBCapable)
 813       rgbFormat = MESA_FORMAT_SARGB8;
 814    else if (mesaVis->alphaBits == 0)
 815       rgbFormat = MESA_FORMAT_XRGB8888;
 816    else
 817       rgbFormat = MESA_FORMAT_ARGB8888;
 818
 819    /* setup the hardware-based renderbuffers */
 820    rb = intel_create_renderbuffer(rgbFormat);
 821    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 822
 823    if (mesaVis->doubleBufferMode) {
 824       rb = intel_create_renderbuffer(rgbFormat);
 825       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 826    }
 827
 828    /*
 829     * Assert here that the gl_config has an expected depth/stencil bit
 830     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 831     * which constructs the advertised configs.)
 832     */
 833    if (mesaVis->depthBits == 24) {
 834       assert(mesaVis->stencilBits == 8);
 835
 836       /*
 837        * Use combined depth/stencil. Note that the renderbuffer is
 838        * attached to two attachment points.
 839        */
 840       rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24);
 841       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 842       _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 843    }
 844    else if (mesaVis->depthBits == 16) {
 845       assert(mesaVis->stencilBits == 0);
 846       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16);
 847       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 848    }
 849    else {
 850       assert(mesaVis->depthBits == 0);
 851       assert(mesaVis->stencilBits == 0);
 852    }
 853
 854    /* now add any/all software-based renderbuffers we may need */
 855    _swrast_add_soft_renderbuffers(fb,
 856                                   false, /* never sw color */
 857                                   false, /* never sw depth */
 858                                   false, /* never sw stencil */
 859                                   mesaVis->accumRedBits > 0,
 860                                   false, /* never sw alpha */
 861                                   false  /* never sw aux */ );
 862    driDrawPriv->driverPrivate = fb;
 863
 864    return true;
 865 }
 866
 867 static void
 868 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 869 {
 870     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 871
 872     _mesa_reference_framebuffer(&fb, NULL);
 873 }
 874
 875 /* There are probably better ways to do this, such as an
 876  * init-designated function to register chipids and createcontext
 877  * functions.
 878  */
 879 extern bool
 880 i830CreateContext(int api,
 881                   const struct gl_config *mesaVis,
 882                   __DRIcontext *driContextPriv,
 883                   unsigned major_version,
 884                   unsigned minor_version,
 885                   unsigned *error,
 886                   void *sharedContextPrivate);
 887
 888 extern bool
 889 i915CreateContext(int api,
 890                   const struct gl_config *mesaVis,
 891                   __DRIcontext *driContextPriv,
 892                   unsigned major_version,
 893                   unsigned minor_version,
 894                   unsigned *error,
 895                   void *sharedContextPrivate);
 896
 897 static GLboolean
 898 intelCreateContext(gl_api api,
 899                    const struct gl_config * mesaVis,
 900                    __DRIcontext * driContextPriv,
 901                    unsigned major_version,
 902                    unsigned minor_version,
 903                    uint32_t flags,
 904                    unsigned *error,
 905                    void *sharedContextPrivate)
 906 {
 907    bool success = false;
 908
 909    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 910    struct intel_screen *intelScreen = sPriv->driverPrivate;
 911
 912    if (IS_9XX(intelScreen->deviceID)) {
 913       success = i915CreateContext(api, mesaVis, driContextPriv,
 914                                   major_version, minor_version, error,
 915                                   sharedContextPrivate);
 916    } else {
 917       intelScreen->no_vbo = true;
 918       success = i830CreateContext(api, mesaVis, driContextPriv,
 919                                   major_version, minor_version, error,
 920                                   sharedContextPrivate);
 921    }
 922
 923    if (success)
 924       return true;
 925
 926    if (driContextPriv->driverPrivate != NULL)
 927       intelDestroyContext(driContextPriv);
 928
 929    return false;
 930 }
 931
 932 static bool
 933 intel_init_bufmgr(struct intel_screen *intelScreen)
 934 {
 935    __DRIscreen *spriv = intelScreen->driScrnPriv;
 936
 937    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 938
 939    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 940    if (intelScreen->bufmgr == NULL) {
 941       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 942               __func__, __LINE__);
 943       return false;
 944    }
 945
 946    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 947
 948    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
 949       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
 950       return false;
 951    }
 952
 953    return true;
 954 }
 955
 956 static bool
 957 intel_detect_swizzling(struct intel_screen *screen)
 958 {
 959    drm_intel_bo *buffer;
 960    unsigned long flags = 0;
 961    unsigned long aligned_pitch;
 962    uint32_t tiling = I915_TILING_X;
 963    uint32_t swizzle_mode = 0;
 964
 965    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 966                                      64, 64, 4,
 967                                      &tiling, &aligned_pitch, flags);
 968    if (buffer == NULL)
 969       return false;
 970
 971    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 972    drm_intel_bo_unreference(buffer);
 973
 974    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 975       return false;
 976    else
 977       return true;
 978 }
 979
 980 static __DRIconfig**
 981 intel_screen_make_configs(__DRIscreen *dri_screen)
 982 {
 983    static const gl_format formats[] = {
 984       MESA_FORMAT_RGB565,
 985       MESA_FORMAT_ARGB8888
 986    };
 987
 988    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
 989    static const GLenum back_buffer_modes[] = {
 990        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
 991    };
 992
 993    static const uint8_t singlesample_samples[1] = {0};
 994
 995    uint8_t depth_bits[4], stencil_bits[4];
 996    __DRIconfig **configs = NULL;
 997
 998    /* Generate singlesample configs without accumulation buffer. */
 999    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1000       __DRIconfig **new_configs;
1001       int num_depth_stencil_bits = 2;
1002
1003       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1004        * buffer that has a different number of bits per pixel than the color
1005        * buffer.
1006        */
1007       depth_bits[0] = 0;
1008       stencil_bits[0] = 0;
1009
1010       if (formats[i] == MESA_FORMAT_RGB565) {
1011          depth_bits[1] = 16;
1012          stencil_bits[1] = 0;
1013       } else {
1014          depth_bits[1] = 24;
1015          stencil_bits[1] = 8;
1016       }
1017
1018       new_configs = driCreateConfigs(formats[i],
1019                                      depth_bits,
1020                                      stencil_bits,
1021                                      num_depth_stencil_bits,
1022                                      back_buffer_modes, 2,
1023                                      singlesample_samples, 1,
1024                                      false);
1025       configs = driConcatConfigs(configs, new_configs);
1026    }
1027
1028    /* Generate the minimum possible set of configs that include an
1029     * accumulation buffer.
1030     */
1031    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1032       __DRIconfig **new_configs;
1033
1034       if (formats[i] == MESA_FORMAT_RGB565) {
1035          depth_bits[0] = 16;
1036          stencil_bits[0] = 0;
1037       } else {
1038          depth_bits[0] = 24;
1039          stencil_bits[0] = 8;
1040       }
1041
1042       new_configs = driCreateConfigs(formats[i],
1043                                      depth_bits, stencil_bits, 1,
1044                                      back_buffer_modes, 1,
1045                                      singlesample_samples, 1,
1046                                      true);
1047       configs = driConcatConfigs(configs, new_configs);
1048    }
1049
1050    if (configs == NULL) {
1051       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1052               __LINE__);
1053       return NULL;
1054    }
1055
1056    return configs;
1057 }
1058
1059 static void
1060 set_max_gl_versions(struct intel_screen *screen)
1061 {
1062    int gl_version_override = _mesa_get_gl_version_override();
1063
1064    switch (screen->gen) {
1065    case 3:
1066       screen->max_gl_core_version = 0;
1067       screen->max_gl_es1_version = 11;
1068       screen->max_gl_compat_version = 21;
1069       screen->max_gl_es2_version = 20;
1070       break;
1071    case 2:
1072       screen->max_gl_core_version = 0;
1073       screen->max_gl_compat_version = 13;
1074       screen->max_gl_es1_version = 11;
1075       screen->max_gl_es2_version = 0;
1076       break;
1077    default:
1078       assert(!"unrecognized intel_screen::gen");
1079       break;
1080    }
1081
1082    if (gl_version_override >= 31) {
1083       screen->max_gl_core_version = MAX2(screen->max_gl_core_version,
1084                                          gl_version_override);
1085    } else {
1086       screen->max_gl_compat_version = MAX2(screen->max_gl_compat_version,
1087                                            gl_version_override);
1088    }
1089
1090 #ifndef FEATURE_ES1
1091    screen->max_gl_es1_version = 0;
1092 #endif
1093
1094 #ifndef FEATURE_ES2
1095    screen->max_gl_es2_version = 0;
1096 #endif
1097 }
1098
1099 /**
1100  * This is the driver specific part of the createNewScreen entry point.
1101  * Called when using DRI2.
1102  *
1103  * \return the struct gl_config supported by this driver
1104  */
1105 static const
1106 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1107 {
1108    struct intel_screen *intelScreen;
1109
1110    if (psp->dri2.loader->base.version <= 2 ||
1111        psp->dri2.loader->getBuffersWithFormat == NULL) {
1112       fprintf(stderr,
1113               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1114               "support required\n");
1115       return false;
1116    }
1117
1118    /* Allocate the private area */
1119    intelScreen = calloc(1, sizeof *intelScreen);
1120    if (!intelScreen) {
1121       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1122       return false;
1123    }
1124    /* parse information in __driConfigOptions */
1125    driParseOptionInfo(&intelScreen->optionCache, __driConfigOptions);
1126
1127    intelScreen->driScrnPriv = psp;
1128    psp->driverPrivate = (void *) intelScreen;
1129
1130    if (!intel_init_bufmgr(intelScreen))
1131        return false;
1132
1133    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1134
1135    if (IS_9XX(intelScreen->deviceID)) {
1136       intelScreen->gen = 3;
1137    } else {
1138       intelScreen->gen = 2;
1139    }
1140
1141    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1142
1143    set_max_gl_versions(intelScreen);
1144
1145    psp->api_mask = (1 << __DRI_API_OPENGL);
1146    if (intelScreen->max_gl_core_version > 0)
1147       psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
1148    if (intelScreen->max_gl_es1_version > 0)
1149       psp->api_mask |= (1 << __DRI_API_GLES);
1150    if (intelScreen->max_gl_es2_version > 0)
1151       psp->api_mask |= (1 << __DRI_API_GLES2);
1152    if (intelScreen->max_gl_es2_version >= 30)
1153       psp->api_mask |= (1 << __DRI_API_GLES3);
1154
1155    psp->extensions = intelScreenExtensions;
1156
1157    return (const __DRIconfig**) intel_screen_make_configs(psp);
1158 }
1159
1160 struct intel_buffer {
1161    __DRIbuffer base;
1162    struct intel_region *region;
1163 };
1164
1165 static __DRIbuffer *
1166 intelAllocateBuffer(__DRIscreen *screen,
1167                     unsigned attachment, unsigned format,
1168                     int width, int height)
1169 {
1170    struct intel_buffer *intelBuffer;
1171    struct intel_screen *intelScreen = screen->driverPrivate;
1172
1173    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1174           attachment == __DRI_BUFFER_BACK_LEFT);
1175
1176    intelBuffer = calloc(1, sizeof *intelBuffer);
1177    if (intelBuffer == NULL)
1178       return NULL;
1179
1180    /* The front and back buffers are color buffers, which are X tiled. */
1181    intelBuffer->region = intel_region_alloc(intelScreen,
1182                                             I915_TILING_X,
1183                                             format / 8,
1184                                             width,
1185                                             height,
1186                                             true);
1187
1188    if (intelBuffer->region == NULL) {
1189            free(intelBuffer);
1190            return NULL;
1191    }
1192
1193    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1194
1195    intelBuffer->base.attachment = attachment;
1196    intelBuffer->base.cpp = intelBuffer->region->cpp;
1197    intelBuffer->base.pitch = intelBuffer->region->pitch;
1198
1199    return &intelBuffer->base;
1200 }
1201
1202 static void
1203 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1204 {
1205    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1206
1207    intel_region_release(&intelBuffer->region);
1208    free(intelBuffer);
1209 }
1210
1211
1212 const struct __DriverAPIRec driDriverAPI = {
1213    .InitScreen           = intelInitScreen2,
1214    .DestroyScreen        = intelDestroyScreen,
1215    .CreateContext        = intelCreateContext,
1216    .DestroyContext       = intelDestroyContext,
1217    .CreateBuffer         = intelCreateBuffer,
1218    .DestroyBuffer        = intelDestroyBuffer,
1219    .MakeCurrent          = intelMakeCurrent,
1220    .UnbindContext        = intelUnbindContext,
1221    .AllocateBuffer       = intelAllocateBuffer,
1222    .ReleaseBuffer        = intelReleaseBuffer
1223 };
1224
1225 /* This is the table of extensions that the loader will dlsym() for. */
1226 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1227     &driCoreExtension.base,
1228     &driDRI2Extension.base,
1229     NULL
1230 };