src/mesa/drivers/dri/i915/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 <unistd.h>
  31 #include "main/glheader.h"
  32 #include "main/context.h"
  33 #include "main/framebuffer.h"
  34 #include "main/renderbuffer.h"
  35 #include "main/texobj.h"
  36 #include "main/hash.h"
  37 #include "main/fbobject.h"
  38 #include "main/version.h"
  39 #include "swrast/s_renderbuffer.h"
  40
  41 #include "utils.h"
  42 #include "xmlpool.h"
  43
  44 static const __DRIconfigOptionsExtension i915_config_options = {
  45    .base = { __DRI_CONFIG_OPTIONS, 1 },
  46    .xml =
  47
  48 DRI_CONF_BEGIN
  49    DRI_CONF_SECTION_PERFORMANCE
  50       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  51       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  52        * DRI_CONF_BO_REUSE_ALL
  53        */
  54       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  55          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  56             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  57             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  58          DRI_CONF_DESC_END
  59       DRI_CONF_OPT_END
  60
  61       DRI_CONF_OPT_BEGIN_B(early_z, "false")
  62          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  63       DRI_CONF_OPT_END
  64
  65    DRI_CONF_SECTION_END
  66    DRI_CONF_SECTION_QUALITY
  67       DRI_CONF_FORCE_S3TC_ENABLE("false")
  68    DRI_CONF_SECTION_END
  69    DRI_CONF_SECTION_DEBUG
  70       DRI_CONF_NO_RAST("false")
  71       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  72       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  73       DRI_CONF_DISABLE_THROTTLING("false")
  74       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  75       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  76       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  77
  78       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  79          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  80       DRI_CONF_OPT_END
  81    DRI_CONF_SECTION_END
  82 DRI_CONF_END
  83 };
  84
  85 #include "intel_batchbuffer.h"
  86 #include "intel_buffers.h"
  87 #include "intel_bufmgr.h"
  88 #include "intel_chipset.h"
  89 #include "intel_fbo.h"
  90 #include "intel_mipmap_tree.h"
  91 #include "intel_screen.h"
  92 #include "intel_tex.h"
  93 #include "intel_regions.h"
  94
  95 #include "i915_drm.h"
  96
  97 #ifdef USE_NEW_INTERFACE
  98 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  99 #endif /*USE_NEW_INTERFACE */
 100
 101 /**
 102  * For debugging purposes, this returns a time in seconds.
 103  */
 104 double
 105 get_time(void)
 106 {
 107    struct timespec tp;
 108
 109    clock_gettime(CLOCK_MONOTONIC, &tp);
 110
 111    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 112 }
 113
 114 void
 115 aub_dump_bmp(struct gl_context *ctx)
 116 {
 117    struct gl_framebuffer *fb = ctx->DrawBuffer;
 118
 119    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 120       struct intel_renderbuffer *irb =
 121          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 122
 123       if (irb && irb->mt) {
 124          enum aub_dump_bmp_format format;
 125
 126          switch (irb->Base.Base.Format) {
 127          case MESA_FORMAT_ARGB8888:
 128          case MESA_FORMAT_XRGB8888:
 129             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 130             break;
 131          default:
 132             continue;
 133          }
 134
 135          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 136          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 137                                        irb->draw_x,
 138                                        irb->draw_y,
 139                                        irb->Base.Base.Width,
 140                                        irb->Base.Base.Height,
 141                                        format,
 142                                        irb->mt->region->pitch,
 143                                        0);
 144       }
 145    }
 146 }
 147
 148 static const __DRItexBufferExtension intelTexBufferExtension = {
 149    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 150
 151    .setTexBuffer        = intelSetTexBuffer,
 152    .setTexBuffer2       = intelSetTexBuffer2,
 153    .releaseTexBuffer    = NULL,
 154 };
 155
 156 static void
 157 intelDRI2Flush(__DRIdrawable *drawable)
 158 {
 159    GET_CURRENT_CONTEXT(ctx);
 160    struct intel_context *intel = intel_context(ctx);
 161    if (intel == NULL)
 162       return;
 163
 164    INTEL_FIREVERTICES(intel);
 165
 166    intel->need_throttle = true;
 167
 168    if (intel->batch.used)
 169       intel_batchbuffer_flush(intel);
 170
 171    if (INTEL_DEBUG & DEBUG_AUB) {
 172       aub_dump_bmp(ctx);
 173    }
 174 }
 175
 176 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 177     .base = { __DRI2_FLUSH, 3 },
 178
 179     .flush              = intelDRI2Flush,
 180     .invalidate         = dri2InvalidateDrawable,
 181 };
 182
 183 static struct intel_image_format intel_image_formats[] = {
 184    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 185      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 186
 187    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 188      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 189
 190    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 191      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 192        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 193        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 194
 195    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 196      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 197        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 198        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 199
 200    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 201      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 202        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 203        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 204
 205    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 206      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 207        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 208        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 209
 210    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 211      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 213        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 214
 215    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 216      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 217        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 218
 219    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 220      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 221        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 222
 223    /* For YUYV buffers, we set up two overlapping DRI images and treat
 224     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 225     * samples YU or YV pairs and places Y into the R component, while
 226     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 227     * places U into the G component and V into A.  This lets the
 228     * texture sampler interpolate the Y components correctly when
 229     * sampling from plane 0, and interpolate U and V correctly when
 230     * sampling from plane 1. */
 231    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 232      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 233        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 234 };
 235
 236 static __DRIimage *
 237 intel_allocate_image(int dri_format, void *loaderPrivate)
 238 {
 239     __DRIimage *image;
 240
 241     image = calloc(1, sizeof *image);
 242     if (image == NULL)
 243         return NULL;
 244
 245     image->dri_format = dri_format;
 246     image->offset = 0;
 247
 248     image->format = driImageFormatToGLFormat(dri_format);
 249     if (dri_format != __DRI_IMAGE_FORMAT_NONE &&
 250         image->format == MESA_FORMAT_NONE) {
 251        free(image);
 252        return NULL;
 253     }
 254
 255     image->internal_format = _mesa_get_format_base_format(image->format);
 256     image->data = loaderPrivate;
 257
 258     return image;
 259 }
 260
 261 /**
 262  * Sets up a DRIImage structure to point to our shared image in a region
 263  */
 264 static void
 265 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 266                                    struct intel_mipmap_tree *mt, GLuint level,
 267                                    GLuint zoffset)
 268 {
 269    unsigned int draw_x, draw_y;
 270    uint32_t mask_x, mask_y;
 271
 272    intel_miptree_check_level_layer(mt, level, zoffset);
 273
 274    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 275    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 276
 277    image->width = mt->level[level].width;
 278    image->height = mt->level[level].height;
 279    image->tile_x = draw_x & mask_x;
 280    image->tile_y = draw_y & mask_y;
 281
 282    image->offset = intel_region_get_aligned_offset(mt->region,
 283                                                    draw_x & ~mask_x,
 284                                                    draw_y & ~mask_y,
 285                                                    false);
 286
 287    intel_region_reference(&image->region, mt->region);
 288 }
 289
 290 static void
 291 intel_setup_image_from_dimensions(__DRIimage *image)
 292 {
 293    image->width    = image->region->width;
 294    image->height   = image->region->height;
 295    image->tile_x = 0;
 296    image->tile_y = 0;
 297 }
 298
 299 static __DRIimage *
 300 intel_create_image_from_name(__DRIscreen *screen,
 301                              int width, int height, int format,
 302                              int name, int pitch, void *loaderPrivate)
 303 {
 304     struct intel_screen *intelScreen = screen->driverPrivate;
 305     __DRIimage *image;
 306     int cpp;
 307
 308     image = intel_allocate_image(format, loaderPrivate);
 309     if (image == NULL)
 310        return NULL;
 311
 312     if (image->format == MESA_FORMAT_NONE)
 313        cpp = 1;
 314     else
 315        cpp = _mesa_get_format_bytes(image->format);
 316     image->region = intel_region_alloc_for_handle(intelScreen,
 317                                                   cpp, width, height,
 318                                                   pitch * cpp, name, "image");
 319     if (image->region == NULL) {
 320        free(image);
 321        return NULL;
 322     }
 323
 324     intel_setup_image_from_dimensions(image);
 325
 326     return image;
 327 }
 328
 329 static __DRIimage *
 330 intel_create_image_from_renderbuffer(__DRIcontext *context,
 331                                      int renderbuffer, void *loaderPrivate)
 332 {
 333    __DRIimage *image;
 334    struct intel_context *intel = context->driverPrivate;
 335    struct gl_renderbuffer *rb;
 336    struct intel_renderbuffer *irb;
 337
 338    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 339    if (!rb) {
 340       _mesa_error(&intel->ctx,
 341                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 342       return NULL;
 343    }
 344
 345    irb = intel_renderbuffer(rb);
 346    image = calloc(1, sizeof *image);
 347    if (image == NULL)
 348       return NULL;
 349
 350    image->internal_format = rb->InternalFormat;
 351    image->format = rb->Format;
 352    image->offset = 0;
 353    image->data = loaderPrivate;
 354    intel_region_reference(&image->region, irb->mt->region);
 355    intel_setup_image_from_dimensions(image);
 356    image->dri_format = driGLFormatToImageFormat(image->format);
 357
 358    rb->NeedsFinishRenderTexture = true;
 359    return image;
 360 }
 361
 362 static __DRIimage *
 363 intel_create_image_from_texture(__DRIcontext *context, int target,
 364                                 unsigned texture, int zoffset,
 365                                 int level,
 366                                 unsigned *error,
 367                                 void *loaderPrivate)
 368 {
 369    __DRIimage *image;
 370    struct intel_context *intel = context->driverPrivate;
 371    struct gl_texture_object *obj;
 372    struct intel_texture_object *iobj;
 373    GLuint face = 0;
 374
 375    obj = _mesa_lookup_texture(&intel->ctx, texture);
 376    if (!obj || obj->Target != target) {
 377       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 378       return NULL;
 379    }
 380
 381    if (target == GL_TEXTURE_CUBE_MAP)
 382       face = zoffset;
 383
 384    _mesa_test_texobj_completeness(&intel->ctx, obj);
 385    iobj = intel_texture_object(obj);
 386    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 387       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 388       return NULL;
 389    }
 390
 391    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 392       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 393       return NULL;
 394    }
 395
 396    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 397       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 398       return NULL;
 399    }
 400    image = calloc(1, sizeof *image);
 401    if (image == NULL) {
 402       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 403       return NULL;
 404    }
 405
 406    image->internal_format = obj->Image[face][level]->InternalFormat;
 407    image->format = obj->Image[face][level]->TexFormat;
 408    image->data = loaderPrivate;
 409    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 410    image->dri_format = driGLFormatToImageFormat(image->format);
 411    if (image->dri_format == MESA_FORMAT_NONE) {
 412       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 413       free(image);
 414       return NULL;
 415    }
 416
 417    *error = __DRI_IMAGE_ERROR_SUCCESS;
 418    return image;
 419 }
 420
 421 static void
 422 intel_destroy_image(__DRIimage *image)
 423 {
 424     intel_region_release(&image->region);
 425     free(image);
 426 }
 427
 428 static __DRIimage *
 429 intel_create_image(__DRIscreen *screen,
 430                    int width, int height, int format,
 431                    unsigned int use,
 432                    void *loaderPrivate)
 433 {
 434    __DRIimage *image;
 435    struct intel_screen *intelScreen = screen->driverPrivate;
 436    uint32_t tiling;
 437    int cpp;
 438
 439    tiling = I915_TILING_X;
 440    if (use & __DRI_IMAGE_USE_CURSOR) {
 441       if (width != 64 || height != 64)
 442          return NULL;
 443       tiling = I915_TILING_NONE;
 444    }
 445
 446    if (use & __DRI_IMAGE_USE_LINEAR)
 447       tiling = I915_TILING_NONE;
 448
 449    image = intel_allocate_image(format, loaderPrivate);
 450    if (image == NULL)
 451       return NULL;
 452
 453    cpp = _mesa_get_format_bytes(image->format);
 454    image->region =
 455       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 456    if (image->region == NULL) {
 457       free(image);
 458       return NULL;
 459    }
 460
 461    intel_setup_image_from_dimensions(image);
 462
 463    return image;
 464 }
 465
 466 static GLboolean
 467 intel_query_image(__DRIimage *image, int attrib, int *value)
 468 {
 469    switch (attrib) {
 470    case __DRI_IMAGE_ATTRIB_STRIDE:
 471       *value = image->region->pitch;
 472       return true;
 473    case __DRI_IMAGE_ATTRIB_HANDLE:
 474       *value = image->region->bo->handle;
 475       return true;
 476    case __DRI_IMAGE_ATTRIB_NAME:
 477       return intel_region_flink(image->region, (uint32_t *) value);
 478    case __DRI_IMAGE_ATTRIB_FORMAT:
 479       *value = image->dri_format;
 480       return true;
 481    case __DRI_IMAGE_ATTRIB_WIDTH:
 482       *value = image->region->width;
 483       return true;
 484    case __DRI_IMAGE_ATTRIB_HEIGHT:
 485       *value = image->region->height;
 486       return true;
 487    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 488       if (image->planar_format == NULL)
 489          return false;
 490       *value = image->planar_format->components;
 491       return true;
 492    case __DRI_IMAGE_ATTRIB_FD:
 493       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 494          return true;
 495       return false;
 496   default:
 497       return false;
 498    }
 499 }
 500
 501 static __DRIimage *
 502 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 503 {
 504    __DRIimage *image;
 505
 506    image = calloc(1, sizeof *image);
 507    if (image == NULL)
 508       return NULL;
 509
 510    intel_region_reference(&image->region, orig_image->region);
 511    if (image->region == NULL) {
 512       free(image);
 513       return NULL;
 514    }
 515
 516    image->internal_format = orig_image->internal_format;
 517    image->planar_format   = orig_image->planar_format;
 518    image->dri_format      = orig_image->dri_format;
 519    image->format          = orig_image->format;
 520    image->offset          = orig_image->offset;
 521    image->width           = orig_image->width;
 522    image->height          = orig_image->height;
 523    image->tile_x          = orig_image->tile_x;
 524    image->tile_y          = orig_image->tile_y;
 525    image->data            = loaderPrivate;
 526
 527    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 528    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 529
 530    return image;
 531 }
 532
 533 static GLboolean
 534 intel_validate_usage(__DRIimage *image, unsigned int use)
 535 {
 536    if (use & __DRI_IMAGE_USE_CURSOR) {
 537       if (image->region->width != 64 || image->region->height != 64)
 538          return GL_FALSE;
 539    }
 540
 541    return GL_TRUE;
 542 }
 543
 544 static __DRIimage *
 545 intel_create_image_from_names(__DRIscreen *screen,
 546                               int width, int height, int fourcc,
 547                               int *names, int num_names,
 548                               int *strides, int *offsets,
 549                               void *loaderPrivate)
 550 {
 551     struct intel_image_format *f = NULL;
 552     __DRIimage *image;
 553     int i, index;
 554
 555     if (screen == NULL || names == NULL || num_names != 1)
 556         return NULL;
 557
 558     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 559         if (intel_image_formats[i].fourcc == fourcc) {
 560            f = &intel_image_formats[i];
 561         }
 562     }
 563
 564     if (f == NULL)
 565         return NULL;
 566
 567     image = intel_create_image_from_name(screen, width, height,
 568                                          __DRI_IMAGE_FORMAT_NONE,
 569                                          names[0], strides[0],
 570                                          loaderPrivate);
 571
 572    if (image == NULL)
 573       return NULL;
 574
 575     image->planar_format = f;
 576     for (i = 0; i < f->nplanes; i++) {
 577         index = f->planes[i].buffer_index;
 578         image->offsets[index] = offsets[index];
 579         image->strides[index] = strides[index];
 580     }
 581
 582     return image;
 583 }
 584
 585 static __DRIimage *
 586 intel_create_image_from_fds(__DRIscreen *screen,
 587                             int width, int height, int fourcc,
 588                             int *fds, int num_fds, int *strides, int *offsets,
 589                             void *loaderPrivate)
 590 {
 591    struct intel_screen *intelScreen = screen->driverPrivate;
 592    struct intel_image_format *f = NULL;
 593    __DRIimage *image;
 594    int i, index;
 595
 596    if (fds == NULL || num_fds != 1)
 597       return NULL;
 598
 599    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 600       if (intel_image_formats[i].fourcc == fourcc) {
 601          f = &intel_image_formats[i];
 602       }
 603    }
 604
 605    if (f == NULL)
 606       return NULL;
 607
 608    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 609    if (image == NULL)
 610       return NULL;
 611
 612    image->region = intel_region_alloc_for_fd(intelScreen,
 613                                              f->planes[0].cpp, width, height, strides[0],
 614                                              height * strides[0], fds[0], "image");
 615    if (image->region == NULL) {
 616       free(image);
 617       return NULL;
 618    }
 619
 620    image->planar_format = f;
 621    for (i = 0; i < f->nplanes; i++) {
 622       index = f->planes[i].buffer_index;
 623       image->offsets[index] = offsets[index];
 624       image->strides[index] = strides[index];
 625    }
 626
 627    return image;
 628 }
 629
 630
 631 static __DRIimage *
 632 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 633 {
 634     int width, height, offset, stride, dri_format, index;
 635     struct intel_image_format *f;
 636     uint32_t mask_x, mask_y;
 637     __DRIimage *image;
 638
 639     if (parent == NULL || parent->planar_format == NULL)
 640         return NULL;
 641
 642     f = parent->planar_format;
 643
 644     if (plane >= f->nplanes)
 645         return NULL;
 646
 647     width = parent->region->width >> f->planes[plane].width_shift;
 648     height = parent->region->height >> f->planes[plane].height_shift;
 649     dri_format = f->planes[plane].dri_format;
 650     index = f->planes[plane].buffer_index;
 651     offset = parent->offsets[index];
 652     stride = parent->strides[index];
 653
 654     image = intel_allocate_image(dri_format, loaderPrivate);
 655     if (image == NULL)
 656        return NULL;
 657
 658     if (offset + height * stride > parent->region->bo->size) {
 659        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 660        free(image);
 661        return NULL;
 662     }
 663
 664     image->region = calloc(sizeof(*image->region), 1);
 665     if (image->region == NULL) {
 666        free(image);
 667        return NULL;
 668     }
 669
 670     image->region->cpp = _mesa_get_format_bytes(image->format);
 671     image->region->width = width;
 672     image->region->height = height;
 673     image->region->pitch = stride;
 674     image->region->refcount = 1;
 675     image->region->bo = parent->region->bo;
 676     drm_intel_bo_reference(image->region->bo);
 677     image->region->tiling = parent->region->tiling;
 678     image->offset = offset;
 679     intel_setup_image_from_dimensions(image);
 680
 681     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 682     if (offset & mask_x)
 683        _mesa_warning(NULL,
 684                      "intel_create_sub_image: offset not on tile boundary");
 685
 686     return image;
 687 }
 688
 689 static struct __DRIimageExtensionRec intelImageExtension = {
 690     .base = { __DRI_IMAGE, 7 },
 691
 692     .createImageFromName                = intel_create_image_from_name,
 693     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 694     .destroyImage                       = intel_destroy_image,
 695     .createImage                        = intel_create_image,
 696     .queryImage                         = intel_query_image,
 697     .dupImage                           = intel_dup_image,
 698     .validateUsage                      = intel_validate_usage,
 699     .createImageFromNames               = intel_create_image_from_names,
 700     .fromPlanar                         = intel_from_planar,
 701     .createImageFromTexture             = intel_create_image_from_texture,
 702     .createImageFromFds                 = intel_create_image_from_fds
 703 };
 704
 705 static int
 706 i915_query_renderer_integer(__DRIscreen *psp, int param, unsigned int *value)
 707 {
 708    const struct intel_screen *const intelScreen =
 709       (struct intel_screen *) psp->driverPrivate;
 710
 711    switch (param) {
 712    case __DRI2_RENDERER_VENDOR_ID:
 713       value[0] = 0x8086;
 714       return 0;
 715    case __DRI2_RENDERER_DEVICE_ID:
 716       value[0] = intelScreen->deviceID;
 717       return 0;
 718    case __DRI2_RENDERER_ACCELERATED:
 719       value[0] = 1;
 720       return 0;
 721    case __DRI2_RENDERER_VIDEO_MEMORY: {
 722       /* Once a batch uses more than 75% of the maximum mappable size, we
 723        * assume that there's some fragmentation, and we start doing extra
 724        * flushing, etc.  That's the big cliff apps will care about.
 725        */
 726       size_t aper_size;
 727       size_t mappable_size;
 728
 729       drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
 730
 731       const unsigned gpu_mappable_megabytes =
 732          (aper_size / (1024 * 1024)) * 3 / 4;
 733
 734       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
 735       const long system_page_size = sysconf(_SC_PAGE_SIZE);
 736
 737       if (system_memory_pages <= 0 || system_page_size <= 0)
 738          return -1;
 739
 740       const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
 741          * (uint64_t) system_page_size;
 742
 743       const unsigned system_memory_megabytes =
 744          (unsigned) (system_memory_bytes / 1024);
 745
 746       value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
 747       return 0;
 748    }
 749    case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
 750       value[0] = 1;
 751       return 0;
 752    case __DRI2_RENDERER_PREFERRED_PROFILE:
 753       value[0] = (1U << __DRI_API_OPENGL);
 754       return 0;
 755    default:
 756       return driQueryRendererIntegerCommon(psp, param, value);
 757    }
 758
 759    return -1;
 760 }
 761
 762 static int
 763 i915_query_renderer_string(__DRIscreen *psp, int param, const char **value)
 764 {
 765    const struct intel_screen *intelScreen =
 766       (struct intel_screen *) psp->driverPrivate;
 767
 768    switch (param) {
 769    case __DRI2_RENDERER_VENDOR_ID:
 770       value[0] = i915_vendor_string;
 771       return 0;
 772    case __DRI2_RENDERER_DEVICE_ID:
 773       value[0] = i915_get_renderer_string(intelScreen->deviceID);
 774       return 0;
 775    default:
 776       break;
 777    }
 778
 779    return -1;
 780 }
 781
 782 static struct __DRI2rendererQueryExtensionRec intelRendererQueryExtension = {
 783    .base = { __DRI2_RENDERER_QUERY, 1 },
 784
 785    .queryInteger = i915_query_renderer_integer,
 786    .queryString = i915_query_renderer_string
 787 };
 788
 789 static const __DRIextension *intelScreenExtensions[] = {
 790     &intelTexBufferExtension.base,
 791     &intelFlushExtension.base,
 792     &intelImageExtension.base,
 793     &intelRendererQueryExtension.base,
 794     &dri2ConfigQueryExtension.base,
 795     NULL
 796 };
 797
 798 static bool
 799 intel_get_param(__DRIscreen *psp, int param, int *value)
 800 {
 801    int ret;
 802    struct drm_i915_getparam gp;
 803
 804    memset(&gp, 0, sizeof(gp));
 805    gp.param = param;
 806    gp.value = value;
 807
 808    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 809    if (ret) {
 810       if (ret != -EINVAL)
 811          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 812       return false;
 813    }
 814
 815    return true;
 816 }
 817
 818 static bool
 819 intel_get_boolean(__DRIscreen *psp, int param)
 820 {
 821    int value = 0;
 822    return intel_get_param(psp, param, &value) && value;
 823 }
 824
 825 static void
 826 intelDestroyScreen(__DRIscreen * sPriv)
 827 {
 828    struct intel_screen *intelScreen = sPriv->driverPrivate;
 829
 830    dri_bufmgr_destroy(intelScreen->bufmgr);
 831    driDestroyOptionInfo(&intelScreen->optionCache);
 832
 833    free(intelScreen);
 834    sPriv->driverPrivate = NULL;
 835 }
 836
 837
 838 /**
 839  * This is called when we need to set up GL rendering to a new X window.
 840  */
 841 static GLboolean
 842 intelCreateBuffer(__DRIscreen * driScrnPriv,
 843                   __DRIdrawable * driDrawPriv,
 844                   const struct gl_config * mesaVis, GLboolean isPixmap)
 845 {
 846    struct intel_renderbuffer *rb;
 847    gl_format rgbFormat;
 848    struct gl_framebuffer *fb;
 849
 850    if (isPixmap)
 851       return false;
 852
 853    fb = CALLOC_STRUCT(gl_framebuffer);
 854    if (!fb)
 855       return false;
 856
 857    _mesa_initialize_window_framebuffer(fb, mesaVis);
 858
 859    if (mesaVis->redBits == 5)
 860       rgbFormat = MESA_FORMAT_RGB565;
 861    else if (mesaVis->sRGBCapable)
 862       rgbFormat = MESA_FORMAT_SARGB8;
 863    else if (mesaVis->alphaBits == 0)
 864       rgbFormat = MESA_FORMAT_XRGB8888;
 865    else
 866       rgbFormat = MESA_FORMAT_ARGB8888;
 867
 868    /* setup the hardware-based renderbuffers */
 869    rb = intel_create_renderbuffer(rgbFormat);
 870    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 871
 872    if (mesaVis->doubleBufferMode) {
 873       rb = intel_create_renderbuffer(rgbFormat);
 874       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 875    }
 876
 877    /*
 878     * Assert here that the gl_config has an expected depth/stencil bit
 879     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 880     * which constructs the advertised configs.)
 881     */
 882    if (mesaVis->depthBits == 24) {
 883       assert(mesaVis->stencilBits == 8);
 884
 885       /*
 886        * Use combined depth/stencil. Note that the renderbuffer is
 887        * attached to two attachment points.
 888        */
 889       rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24);
 890       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 891       _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 892    }
 893    else if (mesaVis->depthBits == 16) {
 894       assert(mesaVis->stencilBits == 0);
 895       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16);
 896       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 897    }
 898    else {
 899       assert(mesaVis->depthBits == 0);
 900       assert(mesaVis->stencilBits == 0);
 901    }
 902
 903    /* now add any/all software-based renderbuffers we may need */
 904    _swrast_add_soft_renderbuffers(fb,
 905                                   false, /* never sw color */
 906                                   false, /* never sw depth */
 907                                   false, /* never sw stencil */
 908                                   mesaVis->accumRedBits > 0,
 909                                   false, /* never sw alpha */
 910                                   false  /* never sw aux */ );
 911    driDrawPriv->driverPrivate = fb;
 912
 913    return true;
 914 }
 915
 916 static void
 917 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 918 {
 919     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 920
 921     _mesa_reference_framebuffer(&fb, NULL);
 922 }
 923
 924 /* There are probably better ways to do this, such as an
 925  * init-designated function to register chipids and createcontext
 926  * functions.
 927  */
 928 extern bool
 929 i830CreateContext(int api,
 930                   const struct gl_config *mesaVis,
 931                   __DRIcontext *driContextPriv,
 932                   unsigned major_version,
 933                   unsigned minor_version,
 934                   uint32_t flags,
 935                   unsigned *error,
 936                   void *sharedContextPrivate);
 937
 938 extern bool
 939 i915CreateContext(int api,
 940                   const struct gl_config *mesaVis,
 941                   __DRIcontext *driContextPriv,
 942                   unsigned major_version,
 943                   unsigned minor_version,
 944                   uint32_t flags,
 945                   unsigned *error,
 946                   void *sharedContextPrivate);
 947
 948 static GLboolean
 949 intelCreateContext(gl_api api,
 950                    const struct gl_config * mesaVis,
 951                    __DRIcontext * driContextPriv,
 952                    unsigned major_version,
 953                    unsigned minor_version,
 954                    uint32_t flags,
 955                    bool notify_reset,
 956                    unsigned *error,
 957                    void *sharedContextPrivate)
 958 {
 959    bool success = false;
 960
 961    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 962    struct intel_screen *intelScreen = sPriv->driverPrivate;
 963
 964    if (flags & ~__DRI_CTX_FLAG_DEBUG) {
 965       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 966       return false;
 967    }
 968
 969    if (notify_reset) {
 970       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 971       return false;
 972    }
 973
 974    if (IS_9XX(intelScreen->deviceID)) {
 975       success = i915CreateContext(api, mesaVis, driContextPriv,
 976                                   major_version, minor_version, flags,
 977                                   error, sharedContextPrivate);
 978    } else {
 979       intelScreen->no_vbo = true;
 980       success = i830CreateContext(api, mesaVis, driContextPriv,
 981                                   major_version, minor_version, flags,
 982                                   error, sharedContextPrivate);
 983    }
 984
 985    if (success)
 986       return true;
 987
 988    if (driContextPriv->driverPrivate != NULL)
 989       intelDestroyContext(driContextPriv);
 990
 991    return false;
 992 }
 993
 994 static bool
 995 intel_init_bufmgr(struct intel_screen *intelScreen)
 996 {
 997    __DRIscreen *spriv = intelScreen->driScrnPriv;
 998
 999    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
1000
1001    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
1002    if (intelScreen->bufmgr == NULL) {
1003       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
1004               __func__, __LINE__);
1005       return false;
1006    }
1007
1008    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1009
1010    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1011       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1012       return false;
1013    }
1014
1015    return true;
1016 }
1017
1018 static bool
1019 intel_detect_swizzling(struct intel_screen *screen)
1020 {
1021    drm_intel_bo *buffer;
1022    unsigned long flags = 0;
1023    unsigned long aligned_pitch;
1024    uint32_t tiling = I915_TILING_X;
1025    uint32_t swizzle_mode = 0;
1026
1027    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1028                                      64, 64, 4,
1029                                      &tiling, &aligned_pitch, flags);
1030    if (buffer == NULL)
1031       return false;
1032
1033    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1034    drm_intel_bo_unreference(buffer);
1035
1036    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1037       return false;
1038    else
1039       return true;
1040 }
1041
1042 static __DRIconfig**
1043 intel_screen_make_configs(__DRIscreen *dri_screen)
1044 {
1045    static const gl_format formats[] = {
1046       MESA_FORMAT_RGB565,
1047       MESA_FORMAT_ARGB8888
1048    };
1049
1050    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1051    static const GLenum back_buffer_modes[] = {
1052        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1053    };
1054
1055    static const uint8_t singlesample_samples[1] = {0};
1056
1057    uint8_t depth_bits[4], stencil_bits[4];
1058    __DRIconfig **configs = NULL;
1059
1060    /* Generate singlesample configs without accumulation buffer. */
1061    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1062       __DRIconfig **new_configs;
1063       int num_depth_stencil_bits = 2;
1064
1065       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1066        * buffer that has a different number of bits per pixel than the color
1067        * buffer.
1068        */
1069       depth_bits[0] = 0;
1070       stencil_bits[0] = 0;
1071
1072       if (formats[i] == MESA_FORMAT_RGB565) {
1073          depth_bits[1] = 16;
1074          stencil_bits[1] = 0;
1075       } else {
1076          depth_bits[1] = 24;
1077          stencil_bits[1] = 8;
1078       }
1079
1080       new_configs = driCreateConfigs(formats[i],
1081                                      depth_bits,
1082                                      stencil_bits,
1083                                      num_depth_stencil_bits,
1084                                      back_buffer_modes, 2,
1085                                      singlesample_samples, 1,
1086                                      false);
1087       configs = driConcatConfigs(configs, new_configs);
1088    }
1089
1090    /* Generate the minimum possible set of configs that include an
1091     * accumulation buffer.
1092     */
1093    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1094       __DRIconfig **new_configs;
1095
1096       if (formats[i] == MESA_FORMAT_RGB565) {
1097          depth_bits[0] = 16;
1098          stencil_bits[0] = 0;
1099       } else {
1100          depth_bits[0] = 24;
1101          stencil_bits[0] = 8;
1102       }
1103
1104       new_configs = driCreateConfigs(formats[i],
1105                                      depth_bits, stencil_bits, 1,
1106                                      back_buffer_modes, 1,
1107                                      singlesample_samples, 1,
1108                                      true);
1109       configs = driConcatConfigs(configs, new_configs);
1110    }
1111
1112    if (configs == NULL) {
1113       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1114               __LINE__);
1115       return NULL;
1116    }
1117
1118    return configs;
1119 }
1120
1121 static void
1122 set_max_gl_versions(struct intel_screen *screen)
1123 {
1124    __DRIscreen *psp = screen->driScrnPriv;
1125
1126    switch (screen->gen) {
1127    case 3:
1128       psp->max_gl_core_version = 0;
1129       psp->max_gl_es1_version = 11;
1130       psp->max_gl_compat_version = 21;
1131       psp->max_gl_es2_version = 20;
1132       break;
1133    case 2:
1134       psp->max_gl_core_version = 0;
1135       psp->max_gl_compat_version = 13;
1136       psp->max_gl_es1_version = 11;
1137       psp->max_gl_es2_version = 0;
1138       break;
1139    default:
1140       assert(!"unrecognized intel_screen::gen");
1141       break;
1142    }
1143 }
1144
1145 /**
1146  * This is the driver specific part of the createNewScreen entry point.
1147  * Called when using DRI2.
1148  *
1149  * \return the struct gl_config supported by this driver
1150  */
1151 static const
1152 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1153 {
1154    struct intel_screen *intelScreen;
1155
1156    if (psp->dri2.loader->base.version <= 2 ||
1157        psp->dri2.loader->getBuffersWithFormat == NULL) {
1158       fprintf(stderr,
1159               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1160               "support required\n");
1161       return false;
1162    }
1163
1164    /* Allocate the private area */
1165    intelScreen = calloc(1, sizeof *intelScreen);
1166    if (!intelScreen) {
1167       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1168       return false;
1169    }
1170    /* parse information in __driConfigOptions */
1171    driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
1172
1173    intelScreen->driScrnPriv = psp;
1174    psp->driverPrivate = (void *) intelScreen;
1175
1176    if (!intel_init_bufmgr(intelScreen))
1177        return false;
1178
1179    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1180
1181    if (IS_9XX(intelScreen->deviceID)) {
1182       intelScreen->gen = 3;
1183    } else {
1184       intelScreen->gen = 2;
1185    }
1186
1187    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1188
1189    set_max_gl_versions(intelScreen);
1190
1191    psp->extensions = intelScreenExtensions;
1192
1193    return (const __DRIconfig**) intel_screen_make_configs(psp);
1194 }
1195
1196 struct intel_buffer {
1197    __DRIbuffer base;
1198    struct intel_region *region;
1199 };
1200
1201 static __DRIbuffer *
1202 intelAllocateBuffer(__DRIscreen *screen,
1203                     unsigned attachment, unsigned format,
1204                     int width, int height)
1205 {
1206    struct intel_buffer *intelBuffer;
1207    struct intel_screen *intelScreen = screen->driverPrivate;
1208
1209    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1210           attachment == __DRI_BUFFER_BACK_LEFT);
1211
1212    intelBuffer = calloc(1, sizeof *intelBuffer);
1213    if (intelBuffer == NULL)
1214       return NULL;
1215
1216    /* The front and back buffers are color buffers, which are X tiled. */
1217    intelBuffer->region = intel_region_alloc(intelScreen,
1218                                             I915_TILING_X,
1219                                             format / 8,
1220                                             width,
1221                                             height,
1222                                             true);
1223
1224    if (intelBuffer->region == NULL) {
1225            free(intelBuffer);
1226            return NULL;
1227    }
1228
1229    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1230
1231    intelBuffer->base.attachment = attachment;
1232    intelBuffer->base.cpp = intelBuffer->region->cpp;
1233    intelBuffer->base.pitch = intelBuffer->region->pitch;
1234
1235    return &intelBuffer->base;
1236 }
1237
1238 static void
1239 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1240 {
1241    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1242
1243    intel_region_release(&intelBuffer->region);
1244    free(intelBuffer);
1245 }
1246
1247
1248 static const struct __DriverAPIRec i915_driver_api = {
1249    .InitScreen           = intelInitScreen2,
1250    .DestroyScreen        = intelDestroyScreen,
1251    .CreateContext        = intelCreateContext,
1252    .DestroyContext       = intelDestroyContext,
1253    .CreateBuffer         = intelCreateBuffer,
1254    .DestroyBuffer        = intelDestroyBuffer,
1255    .MakeCurrent          = intelMakeCurrent,
1256    .UnbindContext        = intelUnbindContext,
1257    .AllocateBuffer       = intelAllocateBuffer,
1258    .ReleaseBuffer        = intelReleaseBuffer
1259 };
1260
1261 static const struct __DRIDriverVtableExtensionRec i915_vtable = {
1262    .base = { __DRI_DRIVER_VTABLE, 1 },
1263    .vtable = &i915_driver_api,
1264 };
1265
1266 /* This is the table of extensions that the loader will dlsym() for. */
1267 static const __DRIextension *i915_driver_extensions[] = {
1268     &driCoreExtension.base,
1269     &driImageDriverExtension.base,
1270     &driDRI2Extension.base,
1271     &i915_vtable.base,
1272     &i915_config_options.base,
1273     NULL
1274 };
1275
1276 PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
1277 {
1278    globalDriverAPI = &i915_driver_api;
1279
1280    return i915_driver_extensions;
1281 }