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    if (use & __DRI_IMAGE_USE_LINEAR)
 486       tiling = I915_TILING_NONE;
 487
 488    image = intel_allocate_image(format, loaderPrivate);
 489    if (image == NULL)
 490       return NULL;
 491
 492    cpp = _mesa_get_format_bytes(image->format);
 493    image->region =
 494       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 495    if (image->region == NULL) {
 496       free(image);
 497       return NULL;
 498    }
 499
 500    intel_setup_image_from_dimensions(image);
 501
 502    return image;
 503 }
 504
 505 static GLboolean
 506 intel_query_image(__DRIimage *image, int attrib, int *value)
 507 {
 508    switch (attrib) {
 509    case __DRI_IMAGE_ATTRIB_STRIDE:
 510       *value = image->region->pitch;
 511       return true;
 512    case __DRI_IMAGE_ATTRIB_HANDLE:
 513       *value = image->region->bo->handle;
 514       return true;
 515    case __DRI_IMAGE_ATTRIB_NAME:
 516       return intel_region_flink(image->region, (uint32_t *) value);
 517    case __DRI_IMAGE_ATTRIB_FORMAT:
 518       *value = image->dri_format;
 519       return true;
 520    case __DRI_IMAGE_ATTRIB_WIDTH:
 521       *value = image->region->width;
 522       return true;
 523    case __DRI_IMAGE_ATTRIB_HEIGHT:
 524       *value = image->region->height;
 525       return true;
 526    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 527       if (image->planar_format == NULL)
 528          return false;
 529       *value = image->planar_format->components;
 530       return true;
 531    case __DRI_IMAGE_ATTRIB_FD:
 532       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 533          return true;
 534       return false;
 535   default:
 536       return false;
 537    }
 538 }
 539
 540 static __DRIimage *
 541 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 542 {
 543    __DRIimage *image;
 544
 545    image = calloc(1, sizeof *image);
 546    if (image == NULL)
 547       return NULL;
 548
 549    intel_region_reference(&image->region, orig_image->region);
 550    if (image->region == NULL) {
 551       free(image);
 552       return NULL;
 553    }
 554
 555    image->internal_format = orig_image->internal_format;
 556    image->planar_format   = orig_image->planar_format;
 557    image->dri_format      = orig_image->dri_format;
 558    image->format          = orig_image->format;
 559    image->offset          = orig_image->offset;
 560    image->width           = orig_image->width;
 561    image->height          = orig_image->height;
 562    image->tile_x          = orig_image->tile_x;
 563    image->tile_y          = orig_image->tile_y;
 564    image->data            = loaderPrivate;
 565
 566    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 567    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 568
 569    return image;
 570 }
 571
 572 static GLboolean
 573 intel_validate_usage(__DRIimage *image, unsigned int use)
 574 {
 575    if (use & __DRI_IMAGE_USE_CURSOR) {
 576       if (image->region->width != 64 || image->region->height != 64)
 577          return GL_FALSE;
 578    }
 579
 580    return GL_TRUE;
 581 }
 582
 583 static __DRIimage *
 584 intel_create_image_from_names(__DRIscreen *screen,
 585                               int width, int height, int fourcc,
 586                               int *names, int num_names,
 587                               int *strides, int *offsets,
 588                               void *loaderPrivate)
 589 {
 590     struct intel_image_format *f = NULL;
 591     __DRIimage *image;
 592     int i, index;
 593
 594     if (screen == NULL || names == NULL || num_names != 1)
 595         return NULL;
 596
 597     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 598         if (intel_image_formats[i].fourcc == fourcc) {
 599            f = &intel_image_formats[i];
 600         }
 601     }
 602
 603     if (f == NULL)
 604         return NULL;
 605
 606     image = intel_create_image_from_name(screen, width, height,
 607                                          __DRI_IMAGE_FORMAT_NONE,
 608                                          names[0], strides[0],
 609                                          loaderPrivate);
 610
 611    if (image == NULL)
 612       return NULL;
 613
 614     image->planar_format = f;
 615     for (i = 0; i < f->nplanes; i++) {
 616         index = f->planes[i].buffer_index;
 617         image->offsets[index] = offsets[index];
 618         image->strides[index] = strides[index];
 619     }
 620
 621     return image;
 622 }
 623
 624 static __DRIimage *
 625 intel_create_image_from_fds(__DRIscreen *screen,
 626                             int width, int height, int fourcc,
 627                             int *fds, int num_fds, int *strides, int *offsets,
 628                             void *loaderPrivate)
 629 {
 630    struct intel_screen *intelScreen = screen->driverPrivate;
 631    struct intel_image_format *f = NULL;
 632    __DRIimage *image;
 633    int i, index;
 634
 635    if (fds == NULL || num_fds != 1)
 636       return NULL;
 637
 638    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 639       if (intel_image_formats[i].fourcc == fourcc) {
 640          f = &intel_image_formats[i];
 641       }
 642    }
 643
 644    if (f == NULL)
 645       return NULL;
 646
 647    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 648    if (image == NULL)
 649       return NULL;
 650
 651    image->region = intel_region_alloc_for_fd(intelScreen,
 652                                              1, width, height,
 653                                              strides[0], fds[0], "image");
 654    if (image->region == NULL) {
 655       free(image);
 656       return NULL;
 657    }
 658
 659    image->planar_format = f;
 660    for (i = 0; i < f->nplanes; i++) {
 661       index = f->planes[i].buffer_index;
 662       image->offsets[index] = offsets[index];
 663       image->strides[index] = strides[index];
 664    }
 665
 666    return image;
 667 }
 668
 669
 670 static __DRIimage *
 671 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 672 {
 673     int width, height, offset, stride, dri_format, index;
 674     struct intel_image_format *f;
 675     uint32_t mask_x, mask_y;
 676     __DRIimage *image;
 677
 678     if (parent == NULL || parent->planar_format == NULL)
 679         return NULL;
 680
 681     f = parent->planar_format;
 682
 683     if (plane >= f->nplanes)
 684         return NULL;
 685
 686     width = parent->region->width >> f->planes[plane].width_shift;
 687     height = parent->region->height >> f->planes[plane].height_shift;
 688     dri_format = f->planes[plane].dri_format;
 689     index = f->planes[plane].buffer_index;
 690     offset = parent->offsets[index];
 691     stride = parent->strides[index];
 692
 693     image = intel_allocate_image(dri_format, loaderPrivate);
 694     if (image == NULL)
 695        return NULL;
 696
 697     if (offset + height * stride > parent->region->bo->size) {
 698        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 699        free(image);
 700        return NULL;
 701     }
 702
 703     image->region = calloc(sizeof(*image->region), 1);
 704     if (image->region == NULL) {
 705        free(image);
 706        return NULL;
 707     }
 708
 709     image->region->cpp = _mesa_get_format_bytes(image->format);
 710     image->region->width = width;
 711     image->region->height = height;
 712     image->region->pitch = stride;
 713     image->region->refcount = 1;
 714     image->region->bo = parent->region->bo;
 715     drm_intel_bo_reference(image->region->bo);
 716     image->region->tiling = parent->region->tiling;
 717     image->offset = offset;
 718     intel_setup_image_from_dimensions(image);
 719
 720     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 721     if (offset & mask_x)
 722        _mesa_warning(NULL,
 723                      "intel_create_sub_image: offset not on tile boundary");
 724
 725     return image;
 726 }
 727
 728 static struct __DRIimageExtensionRec intelImageExtension = {
 729     .base = { __DRI_IMAGE, 7 },
 730
 731     .createImageFromName                = intel_create_image_from_name,
 732     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 733     .destroyImage                       = intel_destroy_image,
 734     .createImage                        = intel_create_image,
 735     .queryImage                         = intel_query_image,
 736     .dupImage                           = intel_dup_image,
 737     .validateUsage                      = intel_validate_usage,
 738     .createImageFromNames               = intel_create_image_from_names,
 739     .fromPlanar                         = intel_from_planar,
 740     .createImageFromTexture             = intel_create_image_from_texture,
 741     .createImageFromFds                 = intel_create_image_from_fds
 742 };
 743
 744 static const __DRIextension *intelScreenExtensions[] = {
 745     &intelTexBufferExtension.base,
 746     &intelFlushExtension.base,
 747     &intelImageExtension.base,
 748     &dri2ConfigQueryExtension.base,
 749     NULL
 750 };
 751
 752 static bool
 753 intel_get_param(__DRIscreen *psp, int param, int *value)
 754 {
 755    int ret;
 756    struct drm_i915_getparam gp;
 757
 758    memset(&gp, 0, sizeof(gp));
 759    gp.param = param;
 760    gp.value = value;
 761
 762    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 763    if (ret) {
 764       if (ret != -EINVAL)
 765          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 766       return false;
 767    }
 768
 769    return true;
 770 }
 771
 772 static bool
 773 intel_get_boolean(__DRIscreen *psp, int param)
 774 {
 775    int value = 0;
 776    return intel_get_param(psp, param, &value) && value;
 777 }
 778
 779 static void
 780 intelDestroyScreen(__DRIscreen * sPriv)
 781 {
 782    struct intel_screen *intelScreen = sPriv->driverPrivate;
 783
 784    dri_bufmgr_destroy(intelScreen->bufmgr);
 785    driDestroyOptionInfo(&intelScreen->optionCache);
 786
 787    free(intelScreen);
 788    sPriv->driverPrivate = NULL;
 789 }
 790
 791
 792 /**
 793  * This is called when we need to set up GL rendering to a new X window.
 794  */
 795 static GLboolean
 796 intelCreateBuffer(__DRIscreen * driScrnPriv,
 797                   __DRIdrawable * driDrawPriv,
 798                   const struct gl_config * mesaVis, GLboolean isPixmap)
 799 {
 800    struct intel_renderbuffer *rb;
 801    gl_format rgbFormat;
 802    struct gl_framebuffer *fb;
 803
 804    if (isPixmap)
 805       return false;
 806
 807    fb = CALLOC_STRUCT(gl_framebuffer);
 808    if (!fb)
 809       return false;
 810
 811    _mesa_initialize_window_framebuffer(fb, mesaVis);
 812
 813    if (mesaVis->redBits == 5)
 814       rgbFormat = MESA_FORMAT_RGB565;
 815    else if (mesaVis->sRGBCapable)
 816       rgbFormat = MESA_FORMAT_SARGB8;
 817    else if (mesaVis->alphaBits == 0)
 818       rgbFormat = MESA_FORMAT_XRGB8888;
 819    else
 820       rgbFormat = MESA_FORMAT_ARGB8888;
 821
 822    /* setup the hardware-based renderbuffers */
 823    rb = intel_create_renderbuffer(rgbFormat);
 824    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 825
 826    if (mesaVis->doubleBufferMode) {
 827       rb = intel_create_renderbuffer(rgbFormat);
 828       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 829    }
 830
 831    /*
 832     * Assert here that the gl_config has an expected depth/stencil bit
 833     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 834     * which constructs the advertised configs.)
 835     */
 836    if (mesaVis->depthBits == 24) {
 837       assert(mesaVis->stencilBits == 8);
 838
 839       /*
 840        * Use combined depth/stencil. Note that the renderbuffer is
 841        * attached to two attachment points.
 842        */
 843       rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24);
 844       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 845       _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 846    }
 847    else if (mesaVis->depthBits == 16) {
 848       assert(mesaVis->stencilBits == 0);
 849       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16);
 850       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 851    }
 852    else {
 853       assert(mesaVis->depthBits == 0);
 854       assert(mesaVis->stencilBits == 0);
 855    }
 856
 857    /* now add any/all software-based renderbuffers we may need */
 858    _swrast_add_soft_renderbuffers(fb,
 859                                   false, /* never sw color */
 860                                   false, /* never sw depth */
 861                                   false, /* never sw stencil */
 862                                   mesaVis->accumRedBits > 0,
 863                                   false, /* never sw alpha */
 864                                   false  /* never sw aux */ );
 865    driDrawPriv->driverPrivate = fb;
 866
 867    return true;
 868 }
 869
 870 static void
 871 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 872 {
 873     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 874
 875     _mesa_reference_framebuffer(&fb, NULL);
 876 }
 877
 878 /* There are probably better ways to do this, such as an
 879  * init-designated function to register chipids and createcontext
 880  * functions.
 881  */
 882 extern bool
 883 i830CreateContext(int api,
 884                   const struct gl_config *mesaVis,
 885                   __DRIcontext *driContextPriv,
 886                   unsigned major_version,
 887                   unsigned minor_version,
 888                   unsigned *error,
 889                   void *sharedContextPrivate);
 890
 891 extern bool
 892 i915CreateContext(int api,
 893                   const struct gl_config *mesaVis,
 894                   __DRIcontext *driContextPriv,
 895                   unsigned major_version,
 896                   unsigned minor_version,
 897                   unsigned *error,
 898                   void *sharedContextPrivate);
 899
 900 static GLboolean
 901 intelCreateContext(gl_api api,
 902                    const struct gl_config * mesaVis,
 903                    __DRIcontext * driContextPriv,
 904                    unsigned major_version,
 905                    unsigned minor_version,
 906                    uint32_t flags,
 907                    unsigned *error,
 908                    void *sharedContextPrivate)
 909 {
 910    bool success = false;
 911
 912    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 913    struct intel_screen *intelScreen = sPriv->driverPrivate;
 914
 915    if (IS_9XX(intelScreen->deviceID)) {
 916       success = i915CreateContext(api, mesaVis, driContextPriv,
 917                                   major_version, minor_version, error,
 918                                   sharedContextPrivate);
 919    } else {
 920       intelScreen->no_vbo = true;
 921       success = i830CreateContext(api, mesaVis, driContextPriv,
 922                                   major_version, minor_version, error,
 923                                   sharedContextPrivate);
 924    }
 925
 926    if (success)
 927       return true;
 928
 929    if (driContextPriv->driverPrivate != NULL)
 930       intelDestroyContext(driContextPriv);
 931
 932    return false;
 933 }
 934
 935 static bool
 936 intel_init_bufmgr(struct intel_screen *intelScreen)
 937 {
 938    __DRIscreen *spriv = intelScreen->driScrnPriv;
 939
 940    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 941
 942    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 943    if (intelScreen->bufmgr == NULL) {
 944       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 945               __func__, __LINE__);
 946       return false;
 947    }
 948
 949    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 950
 951    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
 952       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
 953       return false;
 954    }
 955
 956    return true;
 957 }
 958
 959 static bool
 960 intel_detect_swizzling(struct intel_screen *screen)
 961 {
 962    drm_intel_bo *buffer;
 963    unsigned long flags = 0;
 964    unsigned long aligned_pitch;
 965    uint32_t tiling = I915_TILING_X;
 966    uint32_t swizzle_mode = 0;
 967
 968    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 969                                      64, 64, 4,
 970                                      &tiling, &aligned_pitch, flags);
 971    if (buffer == NULL)
 972       return false;
 973
 974    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 975    drm_intel_bo_unreference(buffer);
 976
 977    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 978       return false;
 979    else
 980       return true;
 981 }
 982
 983 static __DRIconfig**
 984 intel_screen_make_configs(__DRIscreen *dri_screen)
 985 {
 986    static const gl_format formats[] = {
 987       MESA_FORMAT_RGB565,
 988       MESA_FORMAT_ARGB8888
 989    };
 990
 991    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
 992    static const GLenum back_buffer_modes[] = {
 993        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
 994    };
 995
 996    static const uint8_t singlesample_samples[1] = {0};
 997
 998    uint8_t depth_bits[4], stencil_bits[4];
 999    __DRIconfig **configs = NULL;
1000
1001    /* Generate singlesample configs without accumulation buffer. */
1002    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1003       __DRIconfig **new_configs;
1004       int num_depth_stencil_bits = 2;
1005
1006       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1007        * buffer that has a different number of bits per pixel than the color
1008        * buffer.
1009        */
1010       depth_bits[0] = 0;
1011       stencil_bits[0] = 0;
1012
1013       if (formats[i] == MESA_FORMAT_RGB565) {
1014          depth_bits[1] = 16;
1015          stencil_bits[1] = 0;
1016       } else {
1017          depth_bits[1] = 24;
1018          stencil_bits[1] = 8;
1019       }
1020
1021       new_configs = driCreateConfigs(formats[i],
1022                                      depth_bits,
1023                                      stencil_bits,
1024                                      num_depth_stencil_bits,
1025                                      back_buffer_modes, 2,
1026                                      singlesample_samples, 1,
1027                                      false);
1028       configs = driConcatConfigs(configs, new_configs);
1029    }
1030
1031    /* Generate the minimum possible set of configs that include an
1032     * accumulation buffer.
1033     */
1034    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1035       __DRIconfig **new_configs;
1036
1037       if (formats[i] == MESA_FORMAT_RGB565) {
1038          depth_bits[0] = 16;
1039          stencil_bits[0] = 0;
1040       } else {
1041          depth_bits[0] = 24;
1042          stencil_bits[0] = 8;
1043       }
1044
1045       new_configs = driCreateConfigs(formats[i],
1046                                      depth_bits, stencil_bits, 1,
1047                                      back_buffer_modes, 1,
1048                                      singlesample_samples, 1,
1049                                      true);
1050       configs = driConcatConfigs(configs, new_configs);
1051    }
1052
1053    if (configs == NULL) {
1054       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1055               __LINE__);
1056       return NULL;
1057    }
1058
1059    return configs;
1060 }
1061
1062 static void
1063 set_max_gl_versions(struct intel_screen *screen)
1064 {
1065    __DRIscreen *psp = screen->driScrnPriv;
1066
1067    switch (screen->gen) {
1068    case 3:
1069       psp->max_gl_core_version = 0;
1070       psp->max_gl_es1_version = 11;
1071       psp->max_gl_compat_version = 21;
1072       psp->max_gl_es2_version = 20;
1073       break;
1074    case 2:
1075       psp->max_gl_core_version = 0;
1076       psp->max_gl_compat_version = 13;
1077       psp->max_gl_es1_version = 11;
1078       psp->max_gl_es2_version = 0;
1079       break;
1080    default:
1081       assert(!"unrecognized intel_screen::gen");
1082       break;
1083    }
1084 }
1085
1086 /**
1087  * This is the driver specific part of the createNewScreen entry point.
1088  * Called when using DRI2.
1089  *
1090  * \return the struct gl_config supported by this driver
1091  */
1092 static const
1093 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1094 {
1095    struct intel_screen *intelScreen;
1096
1097    if (psp->dri2.loader->base.version <= 2 ||
1098        psp->dri2.loader->getBuffersWithFormat == NULL) {
1099       fprintf(stderr,
1100               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1101               "support required\n");
1102       return false;
1103    }
1104
1105    /* Allocate the private area */
1106    intelScreen = calloc(1, sizeof *intelScreen);
1107    if (!intelScreen) {
1108       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1109       return false;
1110    }
1111    /* parse information in __driConfigOptions */
1112    driParseOptionInfo(&intelScreen->optionCache, __driConfigOptions);
1113
1114    intelScreen->driScrnPriv = psp;
1115    psp->driverPrivate = (void *) intelScreen;
1116
1117    if (!intel_init_bufmgr(intelScreen))
1118        return false;
1119
1120    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1121
1122    if (IS_9XX(intelScreen->deviceID)) {
1123       intelScreen->gen = 3;
1124    } else {
1125       intelScreen->gen = 2;
1126    }
1127
1128    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1129
1130    set_max_gl_versions(intelScreen);
1131
1132    psp->extensions = intelScreenExtensions;
1133
1134    return (const __DRIconfig**) intel_screen_make_configs(psp);
1135 }
1136
1137 struct intel_buffer {
1138    __DRIbuffer base;
1139    struct intel_region *region;
1140 };
1141
1142 static __DRIbuffer *
1143 intelAllocateBuffer(__DRIscreen *screen,
1144                     unsigned attachment, unsigned format,
1145                     int width, int height)
1146 {
1147    struct intel_buffer *intelBuffer;
1148    struct intel_screen *intelScreen = screen->driverPrivate;
1149
1150    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1151           attachment == __DRI_BUFFER_BACK_LEFT);
1152
1153    intelBuffer = calloc(1, sizeof *intelBuffer);
1154    if (intelBuffer == NULL)
1155       return NULL;
1156
1157    /* The front and back buffers are color buffers, which are X tiled. */
1158    intelBuffer->region = intel_region_alloc(intelScreen,
1159                                             I915_TILING_X,
1160                                             format / 8,
1161                                             width,
1162                                             height,
1163                                             true);
1164
1165    if (intelBuffer->region == NULL) {
1166            free(intelBuffer);
1167            return NULL;
1168    }
1169
1170    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1171
1172    intelBuffer->base.attachment = attachment;
1173    intelBuffer->base.cpp = intelBuffer->region->cpp;
1174    intelBuffer->base.pitch = intelBuffer->region->pitch;
1175
1176    return &intelBuffer->base;
1177 }
1178
1179 static void
1180 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1181 {
1182    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1183
1184    intel_region_release(&intelBuffer->region);
1185    free(intelBuffer);
1186 }
1187
1188
1189 const struct __DriverAPIRec driDriverAPI = {
1190    .InitScreen           = intelInitScreen2,
1191    .DestroyScreen        = intelDestroyScreen,
1192    .CreateContext        = intelCreateContext,
1193    .DestroyContext       = intelDestroyContext,
1194    .CreateBuffer         = intelCreateBuffer,
1195    .DestroyBuffer        = intelDestroyBuffer,
1196    .MakeCurrent          = intelMakeCurrent,
1197    .UnbindContext        = intelUnbindContext,
1198    .AllocateBuffer       = intelAllocateBuffer,
1199    .ReleaseBuffer        = intelReleaseBuffer
1200 };
1201
1202 /* This is the table of extensions that the loader will dlsym() for. */
1203 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1204     &driCoreExtension.base,
1205     &driDRI2Extension.base,
1206     NULL
1207 };