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 static const __DRIconfigOptionsExtension i915_config_options = {
  44    .base = { __DRI_CONFIG_OPTIONS, 1 },
  45    .xml =
  46
  47 DRI_CONF_BEGIN
  48    DRI_CONF_SECTION_PERFORMANCE
  49       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  50       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  51        * DRI_CONF_BO_REUSE_ALL
  52        */
  53       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  54          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  55             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  56             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  57          DRI_CONF_DESC_END
  58       DRI_CONF_OPT_END
  59
  60       DRI_CONF_OPT_BEGIN_B(early_z, "false")
  61          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  62       DRI_CONF_OPT_END
  63
  64    DRI_CONF_SECTION_END
  65    DRI_CONF_SECTION_QUALITY
  66       DRI_CONF_FORCE_S3TC_ENABLE("false")
  67    DRI_CONF_SECTION_END
  68    DRI_CONF_SECTION_DEBUG
  69       DRI_CONF_NO_RAST("false")
  70       DRI_CONF_ALWAYS_FLUSH_BATCH("false")
  71       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
  72       DRI_CONF_DISABLE_THROTTLING("false")
  73       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  74       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  75       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  76
  77       DRI_CONF_OPT_BEGIN_B(shader_precompile, "true")
  78          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  79       DRI_CONF_OPT_END
  80    DRI_CONF_SECTION_END
  81 DRI_CONF_END
  82 };
  83
  84 #include "intel_batchbuffer.h"
  85 #include "intel_buffers.h"
  86 #include "intel_bufmgr.h"
  87 #include "intel_chipset.h"
  88 #include "intel_fbo.h"
  89 #include "intel_mipmap_tree.h"
  90 #include "intel_screen.h"
  91 #include "intel_tex.h"
  92 #include "intel_regions.h"
  93
  94 #include "i915_drm.h"
  95
  96 #ifdef USE_NEW_INTERFACE
  97 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  98 #endif /*USE_NEW_INTERFACE */
  99
 100 /**
 101  * For debugging purposes, this returns a time in seconds.
 102  */
 103 double
 104 get_time(void)
 105 {
 106    struct timespec tp;
 107
 108    clock_gettime(CLOCK_MONOTONIC, &tp);
 109
 110    return tp.tv_sec + tp.tv_nsec / 1000000000.0;
 111 }
 112
 113 void
 114 aub_dump_bmp(struct gl_context *ctx)
 115 {
 116    struct gl_framebuffer *fb = ctx->DrawBuffer;
 117
 118    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 119       struct intel_renderbuffer *irb =
 120          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 121
 122       if (irb && irb->mt) {
 123          enum aub_dump_bmp_format format;
 124
 125          switch (irb->Base.Base.Format) {
 126          case MESA_FORMAT_ARGB8888:
 127          case MESA_FORMAT_XRGB8888:
 128             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 129             break;
 130          default:
 131             continue;
 132          }
 133
 134          assert(irb->mt->region->pitch % irb->mt->region->cpp == 0);
 135          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 136                                        irb->draw_x,
 137                                        irb->draw_y,
 138                                        irb->Base.Base.Width,
 139                                        irb->Base.Base.Height,
 140                                        format,
 141                                        irb->mt->region->pitch,
 142                                        0);
 143       }
 144    }
 145 }
 146
 147 static const __DRItexBufferExtension intelTexBufferExtension = {
 148    .base = { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 149
 150    .setTexBuffer        = intelSetTexBuffer,
 151    .setTexBuffer2       = intelSetTexBuffer2,
 152    .releaseTexBuffer    = NULL,
 153 };
 154
 155 static void
 156 intelDRI2Flush(__DRIdrawable *drawable)
 157 {
 158    GET_CURRENT_CONTEXT(ctx);
 159    struct intel_context *intel = intel_context(ctx);
 160    if (intel == NULL)
 161       return;
 162
 163    INTEL_FIREVERTICES(intel);
 164
 165    intel->need_throttle = true;
 166
 167    if (intel->batch.used)
 168       intel_batchbuffer_flush(intel);
 169
 170    if (INTEL_DEBUG & DEBUG_AUB) {
 171       aub_dump_bmp(ctx);
 172    }
 173 }
 174
 175 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 176     .base = { __DRI2_FLUSH, 3 },
 177
 178     .flush              = intelDRI2Flush,
 179     .invalidate         = dri2InvalidateDrawable,
 180 };
 181
 182 static struct intel_image_format intel_image_formats[] = {
 183    { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
 184      { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
 185
 186    { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
 187      { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
 188
 189    { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 190      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 191        { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
 192        { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
 193
 194    { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 195      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 196        { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 197        { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 198
 199    { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 200      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 201        { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
 202        { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
 203
 204    { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 205      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 206        { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 207        { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 208
 209    { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
 210      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 211        { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 212        { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
 213
 214    { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 215      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 216        { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 217
 218    { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
 219      { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
 220        { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
 221
 222    /* For YUYV buffers, we set up two overlapping DRI images and treat
 223     * them as planar buffers in the compositors.  Plane 0 is GR88 and
 224     * samples YU or YV pairs and places Y into the R component, while
 225     * plane 1 is ARGB and samples YUYV clusters and places pairs and
 226     * places U into the G component and V into A.  This lets the
 227     * texture sampler interpolate the Y components correctly when
 228     * sampling from plane 0, and interpolate U and V correctly when
 229     * sampling from plane 1. */
 230    { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
 231      { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
 232        { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
 233 };
 234
 235 static __DRIimage *
 236 intel_allocate_image(int dri_format, void *loaderPrivate)
 237 {
 238     __DRIimage *image;
 239
 240     image = calloc(1, sizeof *image);
 241     if (image == NULL)
 242         return NULL;
 243
 244     image->dri_format = dri_format;
 245     image->offset = 0;
 246
 247     switch (dri_format) {
 248     case __DRI_IMAGE_FORMAT_RGB565:
 249        image->format = MESA_FORMAT_RGB565;
 250        break;
 251     case __DRI_IMAGE_FORMAT_XRGB8888:
 252        image->format = MESA_FORMAT_XRGB8888;
 253        break;
 254     case __DRI_IMAGE_FORMAT_ARGB8888:
 255        image->format = MESA_FORMAT_ARGB8888;
 256        break;
 257     case __DRI_IMAGE_FORMAT_ABGR8888:
 258        image->format = MESA_FORMAT_RGBA8888_REV;
 259        break;
 260     case __DRI_IMAGE_FORMAT_XBGR8888:
 261        image->format = MESA_FORMAT_RGBX8888_REV;
 262        break;
 263     case __DRI_IMAGE_FORMAT_R8:
 264        image->format = MESA_FORMAT_R8;
 265        break;
 266     case __DRI_IMAGE_FORMAT_GR88:
 267        image->format = MESA_FORMAT_GR88;
 268        break;
 269     case __DRI_IMAGE_FORMAT_NONE:
 270        image->format = MESA_FORMAT_NONE;
 271        break;
 272     default:
 273        free(image);
 274        return NULL;
 275     }
 276
 277     image->internal_format = _mesa_get_format_base_format(image->format);
 278     image->data = loaderPrivate;
 279
 280     return image;
 281 }
 282
 283 /**
 284  * Sets up a DRIImage structure to point to our shared image in a region
 285  */
 286 static void
 287 intel_setup_image_from_mipmap_tree(struct intel_context *intel, __DRIimage *image,
 288                                    struct intel_mipmap_tree *mt, GLuint level,
 289                                    GLuint zoffset)
 290 {
 291    unsigned int draw_x, draw_y;
 292    uint32_t mask_x, mask_y;
 293
 294    intel_miptree_check_level_layer(mt, level, zoffset);
 295
 296    intel_region_get_tile_masks(mt->region, &mask_x, &mask_y, false);
 297    intel_miptree_get_image_offset(mt, level, zoffset, &draw_x, &draw_y);
 298
 299    image->width = mt->level[level].width;
 300    image->height = mt->level[level].height;
 301    image->tile_x = draw_x & mask_x;
 302    image->tile_y = draw_y & mask_y;
 303
 304    image->offset = intel_region_get_aligned_offset(mt->region,
 305                                                    draw_x & ~mask_x,
 306                                                    draw_y & ~mask_y,
 307                                                    false);
 308
 309    intel_region_reference(&image->region, mt->region);
 310 }
 311
 312 static void
 313 intel_setup_image_from_dimensions(__DRIimage *image)
 314 {
 315    image->width    = image->region->width;
 316    image->height   = image->region->height;
 317    image->tile_x = 0;
 318    image->tile_y = 0;
 319 }
 320
 321 static inline uint32_t
 322 intel_dri_format(GLuint format)
 323 {
 324    switch (format) {
 325    case MESA_FORMAT_RGB565:
 326       return __DRI_IMAGE_FORMAT_RGB565;
 327    case MESA_FORMAT_XRGB8888:
 328       return __DRI_IMAGE_FORMAT_XRGB8888;
 329    case MESA_FORMAT_ARGB8888:
 330       return __DRI_IMAGE_FORMAT_ARGB8888;
 331    case MESA_FORMAT_RGBA8888_REV:
 332       return __DRI_IMAGE_FORMAT_ABGR8888;
 333    case MESA_FORMAT_R8:
 334       return __DRI_IMAGE_FORMAT_R8;
 335    case MESA_FORMAT_RG88:
 336       return __DRI_IMAGE_FORMAT_GR88;
 337    }
 338
 339    return MESA_FORMAT_NONE;
 340 }
 341
 342 static __DRIimage *
 343 intel_create_image_from_name(__DRIscreen *screen,
 344                              int width, int height, int format,
 345                              int name, int pitch, void *loaderPrivate)
 346 {
 347     struct intel_screen *intelScreen = screen->driverPrivate;
 348     __DRIimage *image;
 349     int cpp;
 350
 351     image = intel_allocate_image(format, loaderPrivate);
 352     if (image == NULL)
 353        return NULL;
 354
 355     if (image->format == MESA_FORMAT_NONE)
 356        cpp = 1;
 357     else
 358        cpp = _mesa_get_format_bytes(image->format);
 359     image->region = intel_region_alloc_for_handle(intelScreen,
 360                                                   cpp, width, height,
 361                                                   pitch * cpp, name, "image");
 362     if (image->region == NULL) {
 363        free(image);
 364        return NULL;
 365     }
 366
 367     intel_setup_image_from_dimensions(image);
 368
 369     return image;
 370 }
 371
 372 static __DRIimage *
 373 intel_create_image_from_renderbuffer(__DRIcontext *context,
 374                                      int renderbuffer, void *loaderPrivate)
 375 {
 376    __DRIimage *image;
 377    struct intel_context *intel = context->driverPrivate;
 378    struct gl_renderbuffer *rb;
 379    struct intel_renderbuffer *irb;
 380
 381    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 382    if (!rb) {
 383       _mesa_error(&intel->ctx,
 384                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 385       return NULL;
 386    }
 387
 388    irb = intel_renderbuffer(rb);
 389    image = calloc(1, sizeof *image);
 390    if (image == NULL)
 391       return NULL;
 392
 393    image->internal_format = rb->InternalFormat;
 394    image->format = rb->Format;
 395    image->offset = 0;
 396    image->data = loaderPrivate;
 397    intel_region_reference(&image->region, irb->mt->region);
 398    intel_setup_image_from_dimensions(image);
 399    image->dri_format = intel_dri_format(image->format);
 400
 401    rb->NeedsFinishRenderTexture = true;
 402    return image;
 403 }
 404
 405 static __DRIimage *
 406 intel_create_image_from_texture(__DRIcontext *context, int target,
 407                                 unsigned texture, int zoffset,
 408                                 int level,
 409                                 unsigned *error,
 410                                 void *loaderPrivate)
 411 {
 412    __DRIimage *image;
 413    struct intel_context *intel = context->driverPrivate;
 414    struct gl_texture_object *obj;
 415    struct intel_texture_object *iobj;
 416    GLuint face = 0;
 417
 418    obj = _mesa_lookup_texture(&intel->ctx, texture);
 419    if (!obj || obj->Target != target) {
 420       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 421       return NULL;
 422    }
 423
 424    if (target == GL_TEXTURE_CUBE_MAP)
 425       face = zoffset;
 426
 427    _mesa_test_texobj_completeness(&intel->ctx, obj);
 428    iobj = intel_texture_object(obj);
 429    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
 430       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 431       return NULL;
 432    }
 433
 434    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
 435       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 436       return NULL;
 437    }
 438
 439    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < zoffset) {
 440       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
 441       return NULL;
 442    }
 443    image = calloc(1, sizeof *image);
 444    if (image == NULL) {
 445       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
 446       return NULL;
 447    }
 448
 449    image->internal_format = obj->Image[face][level]->InternalFormat;
 450    image->format = obj->Image[face][level]->TexFormat;
 451    image->data = loaderPrivate;
 452    intel_setup_image_from_mipmap_tree(intel, image, iobj->mt, level, zoffset);
 453    image->dri_format = intel_dri_format(image->format);
 454    if (image->dri_format == MESA_FORMAT_NONE) {
 455       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
 456       free(image);
 457       return NULL;
 458    }
 459
 460    *error = __DRI_IMAGE_ERROR_SUCCESS;
 461    return image;
 462 }
 463
 464 static void
 465 intel_destroy_image(__DRIimage *image)
 466 {
 467     intel_region_release(&image->region);
 468     free(image);
 469 }
 470
 471 static __DRIimage *
 472 intel_create_image(__DRIscreen *screen,
 473                    int width, int height, int format,
 474                    unsigned int use,
 475                    void *loaderPrivate)
 476 {
 477    __DRIimage *image;
 478    struct intel_screen *intelScreen = screen->driverPrivate;
 479    uint32_t tiling;
 480    int cpp;
 481
 482    tiling = I915_TILING_X;
 483    if (use & __DRI_IMAGE_USE_CURSOR) {
 484       if (width != 64 || height != 64)
 485          return NULL;
 486       tiling = I915_TILING_NONE;
 487    }
 488
 489    if (use & __DRI_IMAGE_USE_LINEAR)
 490       tiling = I915_TILING_NONE;
 491
 492    image = intel_allocate_image(format, loaderPrivate);
 493    if (image == NULL)
 494       return NULL;
 495
 496    cpp = _mesa_get_format_bytes(image->format);
 497    image->region =
 498       intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
 499    if (image->region == NULL) {
 500       free(image);
 501       return NULL;
 502    }
 503
 504    intel_setup_image_from_dimensions(image);
 505
 506    return image;
 507 }
 508
 509 static GLboolean
 510 intel_query_image(__DRIimage *image, int attrib, int *value)
 511 {
 512    switch (attrib) {
 513    case __DRI_IMAGE_ATTRIB_STRIDE:
 514       *value = image->region->pitch;
 515       return true;
 516    case __DRI_IMAGE_ATTRIB_HANDLE:
 517       *value = image->region->bo->handle;
 518       return true;
 519    case __DRI_IMAGE_ATTRIB_NAME:
 520       return intel_region_flink(image->region, (uint32_t *) value);
 521    case __DRI_IMAGE_ATTRIB_FORMAT:
 522       *value = image->dri_format;
 523       return true;
 524    case __DRI_IMAGE_ATTRIB_WIDTH:
 525       *value = image->region->width;
 526       return true;
 527    case __DRI_IMAGE_ATTRIB_HEIGHT:
 528       *value = image->region->height;
 529       return true;
 530    case __DRI_IMAGE_ATTRIB_COMPONENTS:
 531       if (image->planar_format == NULL)
 532          return false;
 533       *value = image->planar_format->components;
 534       return true;
 535    case __DRI_IMAGE_ATTRIB_FD:
 536       if (drm_intel_bo_gem_export_to_prime(image->region->bo, value) == 0)
 537          return true;
 538       return false;
 539   default:
 540       return false;
 541    }
 542 }
 543
 544 static __DRIimage *
 545 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 546 {
 547    __DRIimage *image;
 548
 549    image = calloc(1, sizeof *image);
 550    if (image == NULL)
 551       return NULL;
 552
 553    intel_region_reference(&image->region, orig_image->region);
 554    if (image->region == NULL) {
 555       free(image);
 556       return NULL;
 557    }
 558
 559    image->internal_format = orig_image->internal_format;
 560    image->planar_format   = orig_image->planar_format;
 561    image->dri_format      = orig_image->dri_format;
 562    image->format          = orig_image->format;
 563    image->offset          = orig_image->offset;
 564    image->width           = orig_image->width;
 565    image->height          = orig_image->height;
 566    image->tile_x          = orig_image->tile_x;
 567    image->tile_y          = orig_image->tile_y;
 568    image->data            = loaderPrivate;
 569
 570    memcpy(image->strides, orig_image->strides, sizeof(image->strides));
 571    memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
 572
 573    return image;
 574 }
 575
 576 static GLboolean
 577 intel_validate_usage(__DRIimage *image, unsigned int use)
 578 {
 579    if (use & __DRI_IMAGE_USE_CURSOR) {
 580       if (image->region->width != 64 || image->region->height != 64)
 581          return GL_FALSE;
 582    }
 583
 584    return GL_TRUE;
 585 }
 586
 587 static __DRIimage *
 588 intel_create_image_from_names(__DRIscreen *screen,
 589                               int width, int height, int fourcc,
 590                               int *names, int num_names,
 591                               int *strides, int *offsets,
 592                               void *loaderPrivate)
 593 {
 594     struct intel_image_format *f = NULL;
 595     __DRIimage *image;
 596     int i, index;
 597
 598     if (screen == NULL || names == NULL || num_names != 1)
 599         return NULL;
 600
 601     for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 602         if (intel_image_formats[i].fourcc == fourcc) {
 603            f = &intel_image_formats[i];
 604         }
 605     }
 606
 607     if (f == NULL)
 608         return NULL;
 609
 610     image = intel_create_image_from_name(screen, width, height,
 611                                          __DRI_IMAGE_FORMAT_NONE,
 612                                          names[0], strides[0],
 613                                          loaderPrivate);
 614
 615    if (image == NULL)
 616       return NULL;
 617
 618     image->planar_format = f;
 619     for (i = 0; i < f->nplanes; i++) {
 620         index = f->planes[i].buffer_index;
 621         image->offsets[index] = offsets[index];
 622         image->strides[index] = strides[index];
 623     }
 624
 625     return image;
 626 }
 627
 628 static __DRIimage *
 629 intel_create_image_from_fds(__DRIscreen *screen,
 630                             int width, int height, int fourcc,
 631                             int *fds, int num_fds, int *strides, int *offsets,
 632                             void *loaderPrivate)
 633 {
 634    struct intel_screen *intelScreen = screen->driverPrivate;
 635    struct intel_image_format *f = NULL;
 636    __DRIimage *image;
 637    int i, index;
 638
 639    if (fds == NULL || num_fds != 1)
 640       return NULL;
 641
 642    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
 643       if (intel_image_formats[i].fourcc == fourcc) {
 644          f = &intel_image_formats[i];
 645       }
 646    }
 647
 648    if (f == NULL)
 649       return NULL;
 650
 651    image = intel_allocate_image(__DRI_IMAGE_FORMAT_NONE, loaderPrivate);
 652    if (image == NULL)
 653       return NULL;
 654
 655    image->region = intel_region_alloc_for_fd(intelScreen,
 656                                              1, width, height,
 657                                              strides[0], fds[0], "image");
 658    if (image->region == NULL) {
 659       free(image);
 660       return NULL;
 661    }
 662
 663    image->planar_format = f;
 664    for (i = 0; i < f->nplanes; i++) {
 665       index = f->planes[i].buffer_index;
 666       image->offsets[index] = offsets[index];
 667       image->strides[index] = strides[index];
 668    }
 669
 670    return image;
 671 }
 672
 673
 674 static __DRIimage *
 675 intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
 676 {
 677     int width, height, offset, stride, dri_format, index;
 678     struct intel_image_format *f;
 679     uint32_t mask_x, mask_y;
 680     __DRIimage *image;
 681
 682     if (parent == NULL || parent->planar_format == NULL)
 683         return NULL;
 684
 685     f = parent->planar_format;
 686
 687     if (plane >= f->nplanes)
 688         return NULL;
 689
 690     width = parent->region->width >> f->planes[plane].width_shift;
 691     height = parent->region->height >> f->planes[plane].height_shift;
 692     dri_format = f->planes[plane].dri_format;
 693     index = f->planes[plane].buffer_index;
 694     offset = parent->offsets[index];
 695     stride = parent->strides[index];
 696
 697     image = intel_allocate_image(dri_format, loaderPrivate);
 698     if (image == NULL)
 699        return NULL;
 700
 701     if (offset + height * stride > parent->region->bo->size) {
 702        _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
 703        free(image);
 704        return NULL;
 705     }
 706
 707     image->region = calloc(sizeof(*image->region), 1);
 708     if (image->region == NULL) {
 709        free(image);
 710        return NULL;
 711     }
 712
 713     image->region->cpp = _mesa_get_format_bytes(image->format);
 714     image->region->width = width;
 715     image->region->height = height;
 716     image->region->pitch = stride;
 717     image->region->refcount = 1;
 718     image->region->bo = parent->region->bo;
 719     drm_intel_bo_reference(image->region->bo);
 720     image->region->tiling = parent->region->tiling;
 721     image->offset = offset;
 722     intel_setup_image_from_dimensions(image);
 723
 724     intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
 725     if (offset & mask_x)
 726        _mesa_warning(NULL,
 727                      "intel_create_sub_image: offset not on tile boundary");
 728
 729     return image;
 730 }
 731
 732 static struct __DRIimageExtensionRec intelImageExtension = {
 733     .base = { __DRI_IMAGE, 7 },
 734
 735     .createImageFromName                = intel_create_image_from_name,
 736     .createImageFromRenderbuffer        = intel_create_image_from_renderbuffer,
 737     .destroyImage                       = intel_destroy_image,
 738     .createImage                        = intel_create_image,
 739     .queryImage                         = intel_query_image,
 740     .dupImage                           = intel_dup_image,
 741     .validateUsage                      = intel_validate_usage,
 742     .createImageFromNames               = intel_create_image_from_names,
 743     .fromPlanar                         = intel_from_planar,
 744     .createImageFromTexture             = intel_create_image_from_texture,
 745     .createImageFromFds                 = intel_create_image_from_fds
 746 };
 747
 748 static const __DRIextension *intelScreenExtensions[] = {
 749     &intelTexBufferExtension.base,
 750     &intelFlushExtension.base,
 751     &intelImageExtension.base,
 752     &dri2ConfigQueryExtension.base,
 753     NULL
 754 };
 755
 756 static bool
 757 intel_get_param(__DRIscreen *psp, int param, int *value)
 758 {
 759    int ret;
 760    struct drm_i915_getparam gp;
 761
 762    memset(&gp, 0, sizeof(gp));
 763    gp.param = param;
 764    gp.value = value;
 765
 766    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 767    if (ret) {
 768       if (ret != -EINVAL)
 769          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 770       return false;
 771    }
 772
 773    return true;
 774 }
 775
 776 static bool
 777 intel_get_boolean(__DRIscreen *psp, int param)
 778 {
 779    int value = 0;
 780    return intel_get_param(psp, param, &value) && value;
 781 }
 782
 783 static void
 784 intelDestroyScreen(__DRIscreen * sPriv)
 785 {
 786    struct intel_screen *intelScreen = sPriv->driverPrivate;
 787
 788    dri_bufmgr_destroy(intelScreen->bufmgr);
 789    driDestroyOptionInfo(&intelScreen->optionCache);
 790
 791    free(intelScreen);
 792    sPriv->driverPrivate = NULL;
 793 }
 794
 795
 796 /**
 797  * This is called when we need to set up GL rendering to a new X window.
 798  */
 799 static GLboolean
 800 intelCreateBuffer(__DRIscreen * driScrnPriv,
 801                   __DRIdrawable * driDrawPriv,
 802                   const struct gl_config * mesaVis, GLboolean isPixmap)
 803 {
 804    struct intel_renderbuffer *rb;
 805    gl_format rgbFormat;
 806    struct gl_framebuffer *fb;
 807
 808    if (isPixmap)
 809       return false;
 810
 811    fb = CALLOC_STRUCT(gl_framebuffer);
 812    if (!fb)
 813       return false;
 814
 815    _mesa_initialize_window_framebuffer(fb, mesaVis);
 816
 817    if (mesaVis->redBits == 5)
 818       rgbFormat = MESA_FORMAT_RGB565;
 819    else if (mesaVis->sRGBCapable)
 820       rgbFormat = MESA_FORMAT_SARGB8;
 821    else if (mesaVis->alphaBits == 0)
 822       rgbFormat = MESA_FORMAT_XRGB8888;
 823    else
 824       rgbFormat = MESA_FORMAT_ARGB8888;
 825
 826    /* setup the hardware-based renderbuffers */
 827    rb = intel_create_renderbuffer(rgbFormat);
 828    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 829
 830    if (mesaVis->doubleBufferMode) {
 831       rb = intel_create_renderbuffer(rgbFormat);
 832       _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 833    }
 834
 835    /*
 836     * Assert here that the gl_config has an expected depth/stencil bit
 837     * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 838     * which constructs the advertised configs.)
 839     */
 840    if (mesaVis->depthBits == 24) {
 841       assert(mesaVis->stencilBits == 8);
 842
 843       /*
 844        * Use combined depth/stencil. Note that the renderbuffer is
 845        * attached to two attachment points.
 846        */
 847       rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24);
 848       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 849       _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 850    }
 851    else if (mesaVis->depthBits == 16) {
 852       assert(mesaVis->stencilBits == 0);
 853       rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16);
 854       _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 855    }
 856    else {
 857       assert(mesaVis->depthBits == 0);
 858       assert(mesaVis->stencilBits == 0);
 859    }
 860
 861    /* now add any/all software-based renderbuffers we may need */
 862    _swrast_add_soft_renderbuffers(fb,
 863                                   false, /* never sw color */
 864                                   false, /* never sw depth */
 865                                   false, /* never sw stencil */
 866                                   mesaVis->accumRedBits > 0,
 867                                   false, /* never sw alpha */
 868                                   false  /* never sw aux */ );
 869    driDrawPriv->driverPrivate = fb;
 870
 871    return true;
 872 }
 873
 874 static void
 875 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 876 {
 877     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 878
 879     _mesa_reference_framebuffer(&fb, NULL);
 880 }
 881
 882 /* There are probably better ways to do this, such as an
 883  * init-designated function to register chipids and createcontext
 884  * functions.
 885  */
 886 extern bool
 887 i830CreateContext(int api,
 888                   const struct gl_config *mesaVis,
 889                   __DRIcontext *driContextPriv,
 890                   unsigned major_version,
 891                   unsigned minor_version,
 892                   unsigned *error,
 893                   void *sharedContextPrivate);
 894
 895 extern bool
 896 i915CreateContext(int api,
 897                   const struct gl_config *mesaVis,
 898                   __DRIcontext *driContextPriv,
 899                   unsigned major_version,
 900                   unsigned minor_version,
 901                   unsigned *error,
 902                   void *sharedContextPrivate);
 903
 904 static GLboolean
 905 intelCreateContext(gl_api api,
 906                    const struct gl_config * mesaVis,
 907                    __DRIcontext * driContextPriv,
 908                    unsigned major_version,
 909                    unsigned minor_version,
 910                    uint32_t flags,
 911                    bool notify_reset,
 912                    unsigned *error,
 913                    void *sharedContextPrivate)
 914 {
 915    bool success = false;
 916
 917    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 918    struct intel_screen *intelScreen = sPriv->driverPrivate;
 919
 920    if (flags & ~__DRI_CTX_FLAG_DEBUG) {
 921       *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
 922       return false;
 923    }
 924
 925    if (notify_reset) {
 926       *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
 927       return false;
 928    }
 929
 930    if (IS_9XX(intelScreen->deviceID)) {
 931       success = i915CreateContext(api, mesaVis, driContextPriv,
 932                                   major_version, minor_version, error,
 933                                   sharedContextPrivate);
 934    } else {
 935       intelScreen->no_vbo = true;
 936       success = i830CreateContext(api, mesaVis, driContextPriv,
 937                                   major_version, minor_version, error,
 938                                   sharedContextPrivate);
 939    }
 940
 941    if (success)
 942       return true;
 943
 944    if (driContextPriv->driverPrivate != NULL)
 945       intelDestroyContext(driContextPriv);
 946
 947    return false;
 948 }
 949
 950 static bool
 951 intel_init_bufmgr(struct intel_screen *intelScreen)
 952 {
 953    __DRIscreen *spriv = intelScreen->driScrnPriv;
 954
 955    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 956
 957    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 958    if (intelScreen->bufmgr == NULL) {
 959       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 960               __func__, __LINE__);
 961       return false;
 962    }
 963
 964    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 965
 966    if (!intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA)) {
 967       fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
 968       return false;
 969    }
 970
 971    return true;
 972 }
 973
 974 static bool
 975 intel_detect_swizzling(struct intel_screen *screen)
 976 {
 977    drm_intel_bo *buffer;
 978    unsigned long flags = 0;
 979    unsigned long aligned_pitch;
 980    uint32_t tiling = I915_TILING_X;
 981    uint32_t swizzle_mode = 0;
 982
 983    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 984                                      64, 64, 4,
 985                                      &tiling, &aligned_pitch, flags);
 986    if (buffer == NULL)
 987       return false;
 988
 989    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 990    drm_intel_bo_unreference(buffer);
 991
 992    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 993       return false;
 994    else
 995       return true;
 996 }
 997
 998 static __DRIconfig**
 999 intel_screen_make_configs(__DRIscreen *dri_screen)
1000 {
1001    static const gl_format formats[] = {
1002       MESA_FORMAT_RGB565,
1003       MESA_FORMAT_ARGB8888
1004    };
1005
1006    /* GLX_SWAP_COPY_OML is not supported due to page flipping. */
1007    static const GLenum back_buffer_modes[] = {
1008        GLX_SWAP_UNDEFINED_OML, GLX_NONE,
1009    };
1010
1011    static const uint8_t singlesample_samples[1] = {0};
1012
1013    uint8_t depth_bits[4], stencil_bits[4];
1014    __DRIconfig **configs = NULL;
1015
1016    /* Generate singlesample configs without accumulation buffer. */
1017    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1018       __DRIconfig **new_configs;
1019       int num_depth_stencil_bits = 2;
1020
1021       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
1022        * buffer that has a different number of bits per pixel than the color
1023        * buffer.
1024        */
1025       depth_bits[0] = 0;
1026       stencil_bits[0] = 0;
1027
1028       if (formats[i] == MESA_FORMAT_RGB565) {
1029          depth_bits[1] = 16;
1030          stencil_bits[1] = 0;
1031       } else {
1032          depth_bits[1] = 24;
1033          stencil_bits[1] = 8;
1034       }
1035
1036       new_configs = driCreateConfigs(formats[i],
1037                                      depth_bits,
1038                                      stencil_bits,
1039                                      num_depth_stencil_bits,
1040                                      back_buffer_modes, 2,
1041                                      singlesample_samples, 1,
1042                                      false);
1043       configs = driConcatConfigs(configs, new_configs);
1044    }
1045
1046    /* Generate the minimum possible set of configs that include an
1047     * accumulation buffer.
1048     */
1049    for (int i = 0; i < ARRAY_SIZE(formats); i++) {
1050       __DRIconfig **new_configs;
1051
1052       if (formats[i] == MESA_FORMAT_RGB565) {
1053          depth_bits[0] = 16;
1054          stencil_bits[0] = 0;
1055       } else {
1056          depth_bits[0] = 24;
1057          stencil_bits[0] = 8;
1058       }
1059
1060       new_configs = driCreateConfigs(formats[i],
1061                                      depth_bits, stencil_bits, 1,
1062                                      back_buffer_modes, 1,
1063                                      singlesample_samples, 1,
1064                                      true);
1065       configs = driConcatConfigs(configs, new_configs);
1066    }
1067
1068    if (configs == NULL) {
1069       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1070               __LINE__);
1071       return NULL;
1072    }
1073
1074    return configs;
1075 }
1076
1077 static void
1078 set_max_gl_versions(struct intel_screen *screen)
1079 {
1080    __DRIscreen *psp = screen->driScrnPriv;
1081
1082    switch (screen->gen) {
1083    case 3:
1084       psp->max_gl_core_version = 0;
1085       psp->max_gl_es1_version = 11;
1086       psp->max_gl_compat_version = 21;
1087       psp->max_gl_es2_version = 20;
1088       break;
1089    case 2:
1090       psp->max_gl_core_version = 0;
1091       psp->max_gl_compat_version = 13;
1092       psp->max_gl_es1_version = 11;
1093       psp->max_gl_es2_version = 0;
1094       break;
1095    default:
1096       assert(!"unrecognized intel_screen::gen");
1097       break;
1098    }
1099 }
1100
1101 /**
1102  * This is the driver specific part of the createNewScreen entry point.
1103  * Called when using DRI2.
1104  *
1105  * \return the struct gl_config supported by this driver
1106  */
1107 static const
1108 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
1109 {
1110    struct intel_screen *intelScreen;
1111
1112    if (psp->dri2.loader->base.version <= 2 ||
1113        psp->dri2.loader->getBuffersWithFormat == NULL) {
1114       fprintf(stderr,
1115               "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1116               "support required\n");
1117       return false;
1118    }
1119
1120    /* Allocate the private area */
1121    intelScreen = calloc(1, sizeof *intelScreen);
1122    if (!intelScreen) {
1123       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1124       return false;
1125    }
1126    /* parse information in __driConfigOptions */
1127    driParseOptionInfo(&intelScreen->optionCache, i915_config_options.xml);
1128
1129    intelScreen->driScrnPriv = psp;
1130    psp->driverPrivate = (void *) intelScreen;
1131
1132    if (!intel_init_bufmgr(intelScreen))
1133        return false;
1134
1135    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1136
1137    if (IS_9XX(intelScreen->deviceID)) {
1138       intelScreen->gen = 3;
1139    } else {
1140       intelScreen->gen = 2;
1141    }
1142
1143    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1144
1145    set_max_gl_versions(intelScreen);
1146
1147    psp->extensions = intelScreenExtensions;
1148
1149    return (const __DRIconfig**) intel_screen_make_configs(psp);
1150 }
1151
1152 struct intel_buffer {
1153    __DRIbuffer base;
1154    struct intel_region *region;
1155 };
1156
1157 static __DRIbuffer *
1158 intelAllocateBuffer(__DRIscreen *screen,
1159                     unsigned attachment, unsigned format,
1160                     int width, int height)
1161 {
1162    struct intel_buffer *intelBuffer;
1163    struct intel_screen *intelScreen = screen->driverPrivate;
1164
1165    assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1166           attachment == __DRI_BUFFER_BACK_LEFT);
1167
1168    intelBuffer = calloc(1, sizeof *intelBuffer);
1169    if (intelBuffer == NULL)
1170       return NULL;
1171
1172    /* The front and back buffers are color buffers, which are X tiled. */
1173    intelBuffer->region = intel_region_alloc(intelScreen,
1174                                             I915_TILING_X,
1175                                             format / 8,
1176                                             width,
1177                                             height,
1178                                             true);
1179
1180    if (intelBuffer->region == NULL) {
1181            free(intelBuffer);
1182            return NULL;
1183    }
1184
1185    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1186
1187    intelBuffer->base.attachment = attachment;
1188    intelBuffer->base.cpp = intelBuffer->region->cpp;
1189    intelBuffer->base.pitch = intelBuffer->region->pitch;
1190
1191    return &intelBuffer->base;
1192 }
1193
1194 static void
1195 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1196 {
1197    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1198
1199    intel_region_release(&intelBuffer->region);
1200    free(intelBuffer);
1201 }
1202
1203
1204 static const struct __DriverAPIRec i915_driver_api = {
1205    .InitScreen           = intelInitScreen2,
1206    .DestroyScreen        = intelDestroyScreen,
1207    .CreateContext        = intelCreateContext,
1208    .DestroyContext       = intelDestroyContext,
1209    .CreateBuffer         = intelCreateBuffer,
1210    .DestroyBuffer        = intelDestroyBuffer,
1211    .MakeCurrent          = intelMakeCurrent,
1212    .UnbindContext        = intelUnbindContext,
1213    .AllocateBuffer       = intelAllocateBuffer,
1214    .ReleaseBuffer        = intelReleaseBuffer
1215 };
1216
1217 static const struct __DRIDriverVtableExtensionRec i915_vtable = {
1218    .base = { __DRI_DRIVER_VTABLE, 1 },
1219    .vtable = &i915_driver_api,
1220 };
1221
1222 /* This is the table of extensions that the loader will dlsym() for. */
1223 static const __DRIextension *i915_driver_extensions[] = {
1224     &driCoreExtension.base,
1225     &driDRI2Extension.base,
1226     &i915_vtable.base,
1227     &i915_config_options.base,
1228     NULL
1229 };
1230
1231 PUBLIC const __DRIextension **__driDriverGetExtensions_i915(void)
1232 {
1233    globalDriverAPI = &i915_driver_api;
1234
1235    return i915_driver_extensions;
1236 }