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 <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 (image->format == 0) {
 250        free(image);
 251        return NULL;
 252     }
 253
 254     image->internal_format = _mesa_get_format_base_format(image->format);
 255     image->data = loaderPrivate;
 256
 257     return image;
 258 }
 259
 260 /**
 261  * Sets up a DRIImage structure to point to our shared image in a region
 262  */
 263 static void
 264 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 265                                    struct intel_mipmap_tree *mt, GLuint level,
 266                                    GLuint zoffset)
 267 {
 268    unsigned int draw_x, draw_y;
 269    uint32_t mask_x, mask_y;
 270
 271    intel_miptree_check_level_layer(mt, level, zoffset);
 272
 273    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 274    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 275
 276    image->width = mt->level[level].width;
 277    image->height = mt->level[level].height;
 278    image->tile_x = draw_x & mask_x;
 279    image->tile_y = draw_y & mask_y;
 280
 281    image->offset = intel_region_get_aligned_offset(mt->region,
 282                                                    draw_x & ~mask_x,
 283                                                    draw_y & ~mask_y,
 284                                                    false);
 285
 286    intel_region_reference(&image->region, mt->region);
 287 }
 288
 289 static void
 290 intel_setup_image_from_dimensions(__DRIimage *image)
 291 {
 292    image->width    = image->region->width;
 293    image->height   = image->region->height;
 294    image->tile_x = 0;
 295    image->tile_y = 0;
 296 }
 297
 298 static __DRIimage *
 299 intel_create_image_from_name(__DRIscreen *screen,
 300                              int width, int height, int format,
 301                              int name, int pitch, void *loaderPrivate)
 302 {
 303     struct intel_screen *intelScreen = screen->driverPrivate;
 304     __DRIimage *image;
 305     int cpp;
 306
 307     image = intel_allocate_image(format, loaderPrivate);
 308     if (image == NULL)
 309        return NULL;
 310
 311     if (image->format == MESA_FORMAT_NONE)
 312        cpp = 1;
 313     else
 314        cpp = _mesa_get_format_bytes(image->format);
 315     image->region = intel_region_alloc_for_handle(intelScreen,
 316                                                   cpp, width, height,
 317                                                   pitch * cpp, name, "image");
 318     if (image->region == NULL) {
 319        free(image);
 320        return NULL;
 321     }
 322
 323     intel_setup_image_from_dimensions(image);
 324
 325     return image;
 326 }
 327
 328 static __DRIimage *
 329 intel_create_image_from_renderbuffer(__DRIcontext *context,
 330                                      int renderbuffer, void *loaderPrivate)
 331 {
 332    __DRIimage *image;
 333    struct intel_context *intel = context->driverPrivate;
 334    struct gl_renderbuffer *rb;
 335    struct intel_renderbuffer *irb;
 336
 337    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 338    if (!rb) {
 339       _mesa_error(&intel->ctx,
 340                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 341       return NULL;
 342    }
 343
 344    irb = intel_renderbuffer(rb);
 345    image = calloc(1, sizeof *image);
 346    if (image == NULL)
 347       return NULL;
 348
 349    image->internal_format = rb->InternalFormat;
 350    image->format = rb->Format;
 351    image->offset = 0;
 352    image->data = loaderPrivate;
 353    intel_region_reference(&image->region, irb->mt->region);
 354    intel_setup_image_from_dimensions(image);
 355    image->dri_format = driGLFormatToImageFormat(image->format);
 356
 357    rb->NeedsFinishRenderTexture = true;
 358    return image;
 359 }
 360
 361 static __DRIimage *
 362 intel_create_image_from_texture(__DRIcontext *context, int target,
 363                                 unsigned texture, int zoffset,
 364                                 int level,
 365                                 unsigned *error,
 366                                 void *loaderPrivate)
 367 {
 368    __DRIimage *image;
 369    struct intel_context *intel = context->driverPrivate;
 370    struct gl_texture_object *obj;
 371    struct intel_texture_object *iobj;
 372    GLuint face = 0;
 373
 374    obj = _mesa_lookup_texture(&intel->ctx, texture);
 375    if (!obj || obj->Target != target) {
 376       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 377       return NULL;
 378    }
 379
 380    if (target == GL_TEXTURE_CUBE_MAP)
 381       face = zoffset;
 382
 383    _mesa_test_texobj_completeness(&intel->ctx, obj);
 384    iobj = intel_texture_object(obj);
 385    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 386       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 387       return NULL;
 388    }
 389
 390    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 391       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 392       return NULL;
 393    }
 394
 395    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 396       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 397       return NULL;
 398    }
 399    image = calloc(1, sizeof *image);
 400    if (image == NULL) {
 401       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 402       return NULL;
 403    }
 404
 405    image->internal_format = obj->Image[face][level]->InternalFormat;
 406    image->format = obj->Image[face][level]->TexFormat;
 407    image->data = loaderPrivate;
 408    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 409    image->dri_format = driGLFormatToImageFormat(image->format);
 410    if (image->dri_format == MESA_FORMAT_NONE) {
 411       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 412       free(image);
 413       return NULL;
 414    }
 415
 416    *error = __DRI_IMAGE_ERROR_SUCCESS;
 417    return image;
 418 }
 419
 420 static void
 421 intel_destroy_image(__DRIimage *image)
 422 {
 423     intel_region_release(&image->region);
 424     free(image);
 425 }
 426
 427 static __DRIimage *
 428 intel_create_image(__DRIscreen *screen,
 429                    int width, int height, int format,
 430                    unsigned int use,
 431                    void *loaderPrivate)
 432 {
 433    __DRIimage *image;
 434    struct intel_screen *intelScreen = screen->driverPrivate;
 435    uint32_t tiling;
 436    int cpp;
 437
 438    tiling = I915_TILING_X;
 439    if (use & __DRI_IMAGE_USE_CURSOR) {
 440       if (width != 64 || height != 64)
 441          return NULL;
 442       tiling = I915_TILING_NONE;
 443    }
 444
 445    if (use & __DRI_IMAGE_USE_LINEAR)
 446       tiling = I915_TILING_NONE;
 447
 448    image = intel_allocate_image(format, loaderPrivate);
 449    if (image == NULL)
 450       return NULL;
 451
 452    cpp = _mesa_get_format_bytes(image->format);
 453    image->region =
 454       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 455    if (image->region == NULL) {
 456       free(image);
 457       return NULL;
 458    }
 459
 460    intel_setup_image_from_dimensions(image);
 461
 462    return image;
 463 }
 464
 465 static GLboolean
 466 intel_query_image(__DRIimage *image, int attrib, int *value)
 467 {
 468    switch (attrib) {
 469    case __DRI_IMAGE_ATTRIB_STRIDE:
 470       *value = image->region->pitch;
 471       return true;
 472    case __DRI_IMAGE_ATTRIB_HANDLE:
 473       *value = image->region->bo->handle;
 474       return true;
 475    case __DRI_IMAGE_ATTRIB_NAME:
 476       return intel_region_flink(image->region, (uint32_t *) value);
 477    case __DRI_IMAGE_ATTRIB_FORMAT:
 478       *value = image->dri_format;
 479       return true;
 480    case __DRI_IMAGE_ATTRIB_WIDTH:
 481       *value = image->region->width;
 482       return true;
 483    case __DRI_IMAGE_ATTRIB_HEIGHT:
 484       *value = image->region->height;
 485       return true;
 486    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 487       if (image->planar_format == NULL)
 488          return false;
 489       *value = image->planar_format->components;
 490       return true;
 491    case __DRI_IMAGE_ATTRIB_FD:
 492       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 493          return true;
 494       return false;
 495   default:
 496       return false;
 497    }
 498 }
 499
 500 static __DRIimage *
 501 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 502 {
 503    __DRIimage *image;
 504
 505    image = calloc(1, sizeof *image);
 506    if (image == NULL)
 507       return NULL;
 508
 509    intel_region_reference(&image->region, orig_image->region);
 510    if (image->region == NULL) {
 511       free(image);
 512       return NULL;
 513    }
 514
 515    image->internal_format = orig_image->internal_format;
 516    image->planar_format   = orig_image->planar_format;
 517    image->dri_format      = orig_image->dri_format;
 518    image->format          = orig_image->format;
 519    image->offset          = orig_image->offset;
 520    image->width           = orig_image->width;
 521    image->height          = orig_image->height;
 522    image->tile_x          = orig_image->tile_x;
 523    image->tile_y          = orig_image->tile_y;
 524    image->data            = loaderPrivate;
 525
 526    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 527    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 528
 529    return image;
 530 }
 531
 532 static GLboolean
 533 intel_validate_usage(__DRIimage *image, unsigned int use)
 534 {
 535    if (use & __DRI_IMAGE_USE_CURSOR) {
 536       if (image->region->width != 64 || image->region->height != 64)
 537          return GL_FALSE;
 538    }
 539
 540    return GL_TRUE;
 541 }
 542
 543 static __DRIimage *
 544 intel_create_image_from_names(__DRIscreen *screen,
 545                               int width, int height, int fourcc,
 546                               int *names, int num_names,
 547                               int *strides, int *offsets,
 548                               void *loaderPrivate)
 549 {
 550     struct intel_image_format *f = NULL;
 551     __DRIimage *image;
 552     int i, index;
 553
 554     if (screen == NULL || names == NULL || num_names != 1)
 555         return NULL;
 556
 557     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 558         if (intel_image_formats[i].fourcc == fourcc) {
 559            f = &intel_image_formats[i];
 560         }
 561     }
 562
 563     if (f == NULL)
 564         return NULL;
 565
 566     image = intel_create_image_from_name(screen, width, height,
 567                                          __DRI_IMAGE_FORMAT_NONE,
 568                                          names[0], strides[0],
 569                                          loaderPrivate);
 570
 571    if (image == NULL)
 572       return NULL;
 573
 574     image->planar_format = f;
 575     for (i = 0; i < f->nplanes; i++) {
 576         index = f->planes[i].buffer_index;
 577         image->offsets[index] = offsets[index];
 578         image->strides[index] = strides[index];
 579     }
 580
 581     return image;
 582 }
 583
 584 static __DRIimage *
 585 intel_create_image_from_fds(__DRIscreen *screen,
 586                             int width, int height, int fourcc,
 587                             int *fds, int num_fds, int *strides, int *offsets,
 588                             void *loaderPrivate)
 589 {
 590    struct intel_screen *intelScreen = screen->driverPrivate;
 591    struct intel_image_format *f = NULL;
 592    __DRIimage *image;
 593    int i, index;
 594
 595    if (fds == NULL || num_fds != 1)
 596       return NULL;
 597
 598    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 599       if (intel_image_formats[i].fourcc == fourcc) {
 600          f = &intel_image_formats[i];
 601       }
 602    }
 603
 604    if (f == NULL)
 605       return NULL;
 606
 607    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 608    if (image == NULL)
 609       return NULL;
 610
 611    image->region = intel_region_alloc_for_fd(intelScreen,
 612                                              f->planes[0].cpp, width, height, strides[0],
 613                                              height * strides[0], fds[0], "image");
 614    if (image->region == NULL) {
 615       free(image);
 616       return NULL;
 617    }
 618
 619    image->planar_format = f;
 620    for (i = 0; i < f->nplanes; i++) {
 621       index = f->planes[i].buffer_index;
 622       image->offsets[index] = offsets[index];
 623       image->strides[index] = strides[index];
 624    }
 625
 626    return image;
 627 }
 628
 629
 630 static __DRIimage *
 631 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 632 {
 633     int width, height, offset, stride, dri_format, index;
 634     struct intel_image_format *f;
 635     uint32_t mask_x, mask_y;
 636     __DRIimage *image;
 637
 638     if (parent == NULL || parent->planar_format == NULL)
 639         return NULL;
 640
 641     f = parent->planar_format;
 642
 643     if (plane >= f->nplanes)
 644         return NULL;
 645
 646     width = parent->region->width >> f->planes[plane].width_shift;
 647     height = parent->region->height >> f->planes[plane].height_shift;
 648     dri_format = f->planes[plane].dri_format;
 649     index = f->planes[plane].buffer_index;
 650     offset = parent->offsets[index];
 651     stride = parent->strides[index];
 652
 653     image = intel_allocate_image(dri_format, loaderPrivate);
 654     if (image == NULL)
 655        return NULL;
 656
 657     if (offset + height * stride > parent->region->bo->size) {
 658        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 659        free(image);
 660        return NULL;
 661     }
 662
 663     image->region = calloc(sizeof(*image->region), 1);
 664     if (image->region == NULL) {
 665        free(image);
 666        return NULL;
 667     }
 668
 669     image->region->cpp = _mesa_get_format_bytes(image->format);
 670     image->region->width = width;
 671     image->region->height = height;
 672     image->region->pitch = stride;
 673     image->region->refcount = 1;
 674     image->region->bo = parent->region->bo;
 675     drm_intel_bo_reference(image->region->bo);
 676     image->region->tiling = parent->region->tiling;
 677     image->offset = offset;
 678     intel_setup_image_from_dimensions(image);
 679
 680     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 681     if (offset & mask_x)
 682        _mesa_warning(NULL,
 683                      "intel_create_sub_image: offset not on tile boundary");
 684
 685     return image;
 686 }
 687
 688 static struct __DRIimageExtensionRec intelImageExtension = {
 689     .base = { __DRI_IMAGE, 7 },
 690
 691     .createImageFromName                = intel_create_image_from_name,
 692     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 693     .destroyImage                       = intel_destroy_image,
 694     .createImage                        = intel_create_image,
 695     .queryImage                         = intel_query_image,
 696     .dupImage                           = intel_dup_image,
 697     .validateUsage                      = intel_validate_usage,
 698     .createImageFromNames               = intel_create_image_from_names,
 699     .fromPlanar                         = intel_from_planar,
 700     .createImageFromTexture             = intel_create_image_from_texture,
 701     .createImageFromFds                 = intel_create_image_from_fds
 702 };
 703
 704 static int
 705 i915_query_renderer_integer(__DRIscreen *psp, int param, int *value)
 706 {
 707    const struct intel_screen *const intelScreen =
 708       (struct intel_screen *) psp->driverPrivate;
 709
 710    switch (param) {
 711    case __DRI2_RENDERER_VENDOR_ID:
 712       value[0] = 0x8086;
 713       return 0;
 714    case __DRI2_RENDERER_DEVICE_ID:
 715       value[0] = intelScreen->deviceID;
 716       return 0;
 717    case __DRI2_RENDERER_ACCELERATED:
 718       value[0] = 1;
 719       return 0;
 720    case __DRI2_RENDERER_VIDEO_MEMORY: {
 721       /* Once a batch uses more than 75% of the maximum mappable size, we
 722        * assume that there's some fragmentation, and we start doing extra
 723        * flushing, etc.  That's the big cliff apps will care about.
 724        */
 725       const unsigned long agp_bytes = drmAgpSize(psp->fd);
 726       const unsigned gpu_mappable_megabytes =
 727          (agp_bytes / (1024 * 1024)) * 3 / 4;
 728
 729       const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
 730       const long system_page_size = sysconf(_SC_PAGE_SIZE);
 731
 732       if (system_memory_pages <= 0 || system_page_size <= 0)
 733          return -1;
 734
 735       const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
 736          * (uint64_t) system_page_size;
 737
 738       const unsigned system_memory_megabytes =
 739          (unsigned) (system_memory_bytes / 1024);
 740
 741       value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
 742       return 0;
 743    }
 744    case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
 745       value[0] = 1;
 746       return 0;
 747    case __DRI2_RENDERER_PREFERRED_PROFILE:
 748       value[0] = (1U << __DRI_API_OPENGL);
 749       return 0;
 750    default:
 751       return driQueryRendererIntegerCommon(psp, param, value);
 752    }
 753
 754    return -1;
 755 }
 756
 757 static int
 758 i915_query_renderer_string(__DRIscreen *psp, int param, const char **value)
 759 {
 760    const struct intel_screen *intelScreen =
 761       (struct intel_screen *) psp->driverPrivate;
 762
 763    switch (param) {
 764    case __DRI2_RENDERER_VENDOR_ID:
 765       value[0] = i915_vendor_string;
 766       return 0;
 767    case __DRI2_RENDERER_DEVICE_ID:
 768       value[0] = i915_get_renderer_string(intelScreen->deviceID);
 769       return 0;
 770    default:
 771       break;
 772    }
 773
 774    return -1;
 775 }
 776
 777 static struct __DRI2rendererQueryExtensionRec intelRendererQueryExtension = {
 778    .base = { __DRI2_RENDERER_QUERY, 1 },
 779
 780    .queryInteger = i915_query_renderer_integer,
 781    .queryString = i915_query_renderer_string
 782 };
 783
 784 static const __DRIextension *intelScreenExtensions[] = {
 785     &intelTexBufferExtension.base,
 786     &intelFlushExtension.base,
 787     &intelImageExtension.base,
 788     &dri2ConfigQueryExtension.base,
 789     NULL
 790 };
 791
 792 static bool
 793 intel_get_param(__DRIscreen *psp, int param, int *value)
 794 {
 795    int ret;
 796    struct drm_i915_getparam gp;
 797
 798    memset(&gp, 0, sizeof(gp));
 799    gp.param = param;
 800    gp.value = value;
 801
 802    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 803    if (ret) {
 804       if (ret != -EINVAL)
 805          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 806       return false;
 807    }
 808
 809    return true;
 810 }
 811
 812 static bool
 813 intel_get_boolean(__DRIscreen *psp, int param)
 814 {
 815    int value = 0;
 816    return intel_get_param(psp, param, &value) && value;
 817 }
 818
 819 static void
 820 intelDestroyScreen(__DRIscreen * sPriv)
 821 {
 822    struct intel_screen *intelScreen = sPriv->driverPrivate;
 823
 824    dri_bufmgr_destroy(intelScreen->bufmgr);
 825    driDestroyOptionInfo(&intelScreen->optionCache);
 826
 827    free(intelScreen);
 828    sPriv->driverPrivate = NULL;
 829 }
 830
 831
 832 /**
 833  * This is called when we need to set up GL rendering to a new X window.
 834  */
 835 static GLboolean
 836 intelCreateBuffer(__DRIscreen * driScrnPriv,
 837                   __DRIdrawable * driDrawPriv,
 838                   const struct gl_config * mesaVis, GLboolean isPixmap)
 839 {
 840    struct intel_renderbuffer *rb;
 841    gl_format rgbFormat;
 842    struct gl_framebuffer *fb;
 843
 844    if (isPixmap)
 845       return false;
 846
 847    fb = CALLOC_STRUCT(gl_framebuffer);
 848    if (!fb)
 849       return false;
 850
 851    _mesa_initialize_window_framebuffer(fb, mesaVis);
 852
 853    if (mesaVis->redBits == 5)
 854       rgbFormat = MESA_FORMAT_RGB565;
 855    else if (mesaVis->sRGBCapable)
 856       rgbFormat = MESA_FORMAT_SARGB8;
 857    else if (mesaVis->alphaBits == 0)
 858       rgbFormat = MESA_FORMAT_XRGB8888;
 859    else
 860       rgbFormat = MESA_FORMAT_ARGB8888;
 861
 862    /* setup the hardware-based renderbuffers */
 863    rb = intel_create_renderbuffer(rgbFormat);
 864    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 865
 866    if (mesaVis->doubleBufferMode) {
 867       rb = intel_create_renderbuffer(rgbFormat);
 868       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 869    }
 870
 871    /*
 872     * Assert here that the gl_config has an expected depth/stencil bit
 873     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 874     * which constructs the advertised configs.)
 875     */
 876    if (mesaVis->depthBits == 24) {
 877       assert(mesaVis->stencilBits == 8);
 878
 879       /*
 880        * Use combined depth/stencil. Note that the renderbuffer is
 881        * attached to two attachment points.
 882        */
 883       rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24);
 884       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 885       _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 886    }
 887    else if (mesaVis->depthBits == 16) {
 888       assert(mesaVis->stencilBits == 0);
 889       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16);
 890       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 891    }
 892    else {
 893       assert(mesaVis->depthBits == 0);
 894       assert(mesaVis->stencilBits == 0);
 895    }
 896
 897    /* now add any/all software-based renderbuffers we may need */
 898    _swrast_add_soft_renderbuffers(fb,
 899                                   false, /* never sw color */
 900                                   false, /* never sw depth */
 901                                   false, /* never sw stencil */
 902                                   mesaVis->accumRedBits > 0,
 903                                   false, /* never sw alpha */
 904                                   false  /* never sw aux */ );
 905    driDrawPriv->driverPrivate = fb;
 906
 907    return true;
 908 }
 909
 910 static void
 911 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 912 {
 913     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 914
 915     _mesa_reference_framebuffer(&fb, NULL);
 916 }
 917
 918 /* There are probably better ways to do this, such as an
 919  * init-designated function to register chipids and createcontext
 920  * functions.
 921  */
 922 extern bool
 923 i830CreateContext(int api,
 924                   const struct gl_config *mesaVis,
 925                   __DRIcontext *driContextPriv,
 926                   unsigned major_version,
 927                   unsigned minor_version,
 928                   unsigned *error,
 929                   void *sharedContextPrivate);
 930
 931 extern bool
 932 i915CreateContext(int api,
 933                   const struct gl_config *mesaVis,
 934                   __DRIcontext *driContextPriv,
 935                   unsigned major_version,
 936                   unsigned minor_version,
 937                   unsigned *error,
 938                   void *sharedContextPrivate);
 939
 940 static GLboolean
 941 intelCreateContext(gl_api api,
 942                    const struct gl_config * mesaVis,
 943                    __DRIcontext * driContextPriv,
 944                    unsigned major_version,
 945                    unsigned minor_version,
 946                    uint32_t flags,
 947                    bool notify_reset,
 948                    unsigned *error,
 949                    void *sharedContextPrivate)
 950 {
 951    bool success = false;
 952
 953    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 954    struct intel_screen *intelScreen = sPriv->driverPrivate;
 955
 956    if (flags & ~__DRI_CTX_FLAG_DEBUG) {
 957       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 958       return false;
 959    }
 960
 961    if (notify_reset) {
 962       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 963       return false;
 964    }
 965
 966    if (IS_9XX(intelScreen->deviceID)) {
 967       success = i915CreateContext(api, mesaVis, driContextPriv,
 968                                   major_version, minor_version, error,
 969                                   sharedContextPrivate);
 970    } else {
 971       intelScreen->no_vbo = true;
 972       success = i830CreateContext(api, mesaVis, driContextPriv,
 973                                   major_version, minor_version, error,
 974                                   sharedContextPrivate);
 975    }
 976
 977    if (success)
 978       return true;
 979
 980    if (driContextPriv->driverPrivate != NULL)
 981       intelDestroyContext(driContextPriv);
 982
 983    return false;
 984 }
 985
 986 static bool
 987 intel_init_bufmgr(struct intel_screen *intelScreen)
 988 {
 989    __DRIscreen *spriv = intelScreen->driScrnPriv;
 990
 991    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 992
 993    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 994    if (intelScreen->bufmgr == NULL) {
 995       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 996               __func__, __LINE__);
 997       return false;
 998    }
 999
1000    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
1001
1002    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
1003       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
1004       return false;
1005    }
1006
1007    return true;
1008 }
1009
1010 static bool
1011 intel_detect_swizzling(struct intel_screen *screen)
1012 {
1013    drm_intel_bo *buffer;
1014    unsigned long flags = 0;
1015    unsigned long aligned_pitch;
1016    uint32_t tiling = I915_TILING_X;
1017    uint32_t swizzle_mode = 0;
1018
1019    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
1020                                      64, 64, 4,
1021                                      &tiling, &aligned_pitch, flags);
1022    if (buffer == NULL)
1023       return false;
1024
1025    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
1026    drm_intel_bo_unreference(buffer);
1027
1028    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
1029       return false;
1030    else
1031       return true;
1032 }
1033
1034 static __DRIconfig**
1035 intel_screen_make_configs(__DRIscreen *dri_screen)
1036 {
1037    static const gl_format formats[] = {
1038       MESA_FORMAT_RGB565,
1039       MESA_FORMAT_ARGB8888
1040    };
1041
1042    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1043    static const GLenum back_buffer_modes[] = {
1044        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1045    };
1046
1047    static const uint8_t singlesample_samples[1] = {0};
1048
1049    uint8_t depth_bits[4], stencil_bits[4];
1050    __DRIconfig **configs = NULL;
1051
1052    /* Generate singlesample configs without accumulation buffer. */
1053    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1054       __DRIconfig **new_configs;
1055       int num_depth_stencil_bits = 2;
1056
1057       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1058        * buffer that has a different number of bits per pixel than the color
1059        * buffer.
1060        */
1061       depth_bits[0] = 0;
1062       stencil_bits[0] = 0;
1063
1064       if (formats[i] == MESA_FORMAT_RGB565) {
1065          depth_bits[1] = 16;
1066          stencil_bits[1] = 0;
1067       } else {
1068          depth_bits[1] = 24;
1069          stencil_bits[1] = 8;
1070       }
1071
1072       new_configs = driCreateConfigs(formats[i],
1073                                      depth_bits,
1074                                      stencil_bits,
1075                                      num_depth_stencil_bits,
1076                                      back_buffer_modes, 2,
1077                                      singlesample_samples, 1,
1078                                      false);
1079       configs = driConcatConfigs(configs, new_configs);
1080    }
1081
1082    /* Generate the minimum possible set of configs that include an
1083     * accumulation buffer.
1084     */
1085    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1086       __DRIconfig **new_configs;
1087
1088       if (formats[i] == MESA_FORMAT_RGB565) {
1089          depth_bits[0] = 16;
1090          stencil_bits[0] = 0;
1091       } else {
1092          depth_bits[0] = 24;
1093          stencil_bits[0] = 8;
1094       }
1095
1096       new_configs = driCreateConfigs(formats[i],
1097                                      depth_bits, stencil_bits, 1,
1098                                      back_buffer_modes, 1,
1099                                      singlesample_samples, 1,
1100                                      true);
1101       configs = driConcatConfigs(configs, new_configs);
1102    }
1103
1104    if (configs == NULL) {
1105       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1106               __LINE__);
1107       return NULL;
1108    }
1109
1110    return configs;
1111 }
1112
1113 static void
1114 set_max_gl_versions(struct intel_screen *screen)
1115 {
1116    __DRIscreen *psp = screen->driScrnPriv;
1117
1118    switch (screen->gen) {
1119    case 3:
1120       psp->max_gl_core_version = 0;
1121       psp->max_gl_es1_version = 11;
1122       psp->max_gl_compat_version = 21;
1123       psp->max_gl_es2_version = 20;
1124       break;
1125    case 2:
1126       psp->max_gl_core_version = 0;
1127       psp->max_gl_compat_version = 13;
1128       psp->max_gl_es1_version = 11;
1129       psp->max_gl_es2_version = 0;
1130       break;
1131    default:
1132       assert(!"unrecognized intel_screen::gen");
1133       break;
1134    }
1135 }
1136
1137 /**
1138  * This is the driver specific part of the createNewScreen entry point.
1139  * Called when using DRI2.
1140  *
1141  * \return the struct gl_config supported by this driver
1142  */
1143 static const
1144 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1145 {
1146    struct intel_screen *intelScreen;
1147
1148    if (psp->dri2.loader->base.version <= 2 ||
1149        psp->dri2.loader->getBuffersWithFormat == NULL) {
1150       fprintf(stderr,
1151               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1152               "support required\n");
1153       return false;
1154    }
1155
1156    /* Allocate the private area */
1157    intelScreen = calloc(1, sizeof *intelScreen);
1158    if (!intelScreen) {
1159       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1160       return false;
1161    }
1162    /* parse information in __driConfigOptions */
1163    driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
1164
1165    intelScreen->driScrnPriv = psp;
1166    psp->driverPrivate = (void *) intelScreen;
1167
1168    if (!intel_init_bufmgr(intelScreen))
1169        return false;
1170
1171    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1172
1173    if (IS_9XX(intelScreen->deviceID)) {
1174       intelScreen->gen = 3;
1175    } else {
1176       intelScreen->gen = 2;
1177    }
1178
1179    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1180
1181    set_max_gl_versions(intelScreen);
1182
1183    psp->extensions = intelScreenExtensions;
1184
1185    return (const __DRIconfig**) intel_screen_make_configs(psp);
1186 }
1187
1188 struct intel_buffer {
1189    __DRIbuffer base;
1190    struct intel_region *region;
1191 };
1192
1193 static __DRIbuffer *
1194 intelAllocateBuffer(__DRIscreen *screen,
1195                     unsigned attachment, unsigned format,
1196                     int width, int height)
1197 {
1198    struct intel_buffer *intelBuffer;
1199    struct intel_screen *intelScreen = screen->driverPrivate;
1200
1201    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1202           attachment == __DRI_BUFFER_BACK_LEFT);
1203
1204    intelBuffer = calloc(1, sizeof *intelBuffer);
1205    if (intelBuffer == NULL)
1206       return NULL;
1207
1208    /* The front and back buffers are color buffers, which are X tiled. */
1209    intelBuffer->region = intel_region_alloc(intelScreen,
1210                                             I915_TILING_X,
1211                                             format / 8,
1212                                             width,
1213                                             height,
1214                                             true);
1215
1216    if (intelBuffer->region == NULL) {
1217            free(intelBuffer);
1218            return NULL;
1219    }
1220
1221    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1222
1223    intelBuffer->base.attachment = attachment;
1224    intelBuffer->base.cpp = intelBuffer->region->cpp;
1225    intelBuffer->base.pitch = intelBuffer->region->pitch;
1226
1227    return &intelBuffer->base;
1228 }
1229
1230 static void
1231 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1232 {
1233    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1234
1235    intel_region_release(&intelBuffer->region);
1236    free(intelBuffer);
1237 }
1238
1239
1240 static const struct __DriverAPIRec i915_driver_api = {
1241    .InitScreen           = intelInitScreen2,
1242    .DestroyScreen        = intelDestroyScreen,
1243    .CreateContext        = intelCreateContext,
1244    .DestroyContext       = intelDestroyContext,
1245    .CreateBuffer         = intelCreateBuffer,
1246    .DestroyBuffer        = intelDestroyBuffer,
1247    .MakeCurrent          = intelMakeCurrent,
1248    .UnbindContext        = intelUnbindContext,
1249    .AllocateBuffer       = intelAllocateBuffer,
1250    .ReleaseBuffer        = intelReleaseBuffer
1251 };
1252
1253 static const struct __DRIDriverVtableExtensionRec i915_vtable = {
1254    .base = { __DRI_DRIVER_VTABLE, 1 },
1255    .vtable = &i915_driver_api,
1256 };
1257
1258 /* This is the table of extensions that the loader will dlsym() for. */
1259 static const __DRIextension *i915_driver_extensions[] = {
1260     &driCoreExtension.base,
1261     &driDRI2Extension.base,
1262     &i915_vtable.base,
1263     &i915_config_options.base,
1264     NULL
1265 };
1266
1267 PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
1268 {
1269    globalDriverAPI = &i915_driver_api;
1270
1271    return i915_driver_extensions;
1272 }