src/mesa/drivers/dri/intel/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 "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/framebuffer.h"
  32 #include "main/renderbuffer.h"
  33 #include "main/hash.h"
  34 #include "main/fbobject.h"
  35 #include "main/mfeatures.h"
  36 #include "main/version.h"
  37 #include "swrast/s_renderbuffer.h"
  38
  39 #include "utils.h"
  40 #include "xmlpool.h"
  41
  42 PUBLIC const char __driConfigOptions[] =
  43    DRI_CONF_BEGIN
  44    DRI_CONF_SECTION_PERFORMANCE
  45       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  46       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  47        * DRI_CONF_BO_REUSE_ALL
  48        */
  49       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  50          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  51             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  52             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  53          DRI_CONF_DESC_END
  54       DRI_CONF_OPT_END
  55
  56       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  57          DRI_CONF_DESC(en, "Enable texture tiling")
  58       DRI_CONF_OPT_END
  59
  60       DRI_CONF_OPT_BEGIN(hiz, bool, true)
  61          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  62       DRI_CONF_OPT_END
  63
  64       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  65          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  66       DRI_CONF_OPT_END
  67
  68       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  69          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  70       DRI_CONF_OPT_END
  71
  72    DRI_CONF_SECTION_END
  73    DRI_CONF_SECTION_QUALITY
  74       DRI_CONF_FORCE_S3TC_ENABLE(false)
  75       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  76    DRI_CONF_SECTION_END
  77    DRI_CONF_SECTION_DEBUG
  78      DRI_CONF_NO_RAST(false)
  79      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  80      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  81      DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
  82
  83       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  84          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  85       DRI_CONF_OPT_END
  86
  87       DRI_CONF_OPT_BEGIN(shader_precompile, bool, false)
  88          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  89       DRI_CONF_OPT_END
  90    DRI_CONF_SECTION_END
  91 DRI_CONF_END;
  92
  93 const GLuint __driNConfigOptions = 14;
  94
  95 #include "intel_batchbuffer.h"
  96 #include "intel_buffers.h"
  97 #include "intel_bufmgr.h"
  98 #include "intel_chipset.h"
  99 #include "intel_fbo.h"
 100 #include "intel_mipmap_tree.h"
 101 #include "intel_screen.h"
 102 #include "intel_tex.h"
 103 #include "intel_regions.h"
 104
 105 #include "i915_drm.h"
 106
 107 #ifdef USE_NEW_INTERFACE
 108 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 109 #endif /*USE_NEW_INTERFACE */
 110
 111 void
 112 aub_dump_bmp(struct gl_context *ctx)
 113 {
 114    struct gl_framebuffer *fb = ctx->DrawBuffer;
 115
 116    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 117       struct intel_renderbuffer *irb =
 118          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 119
 120       if (irb && irb->mt) {
 121          enum aub_dump_bmp_format format;
 122
 123          switch (irb->Base.Base.Format) {
 124          case MESA_FORMAT_ARGB8888:
 125          case MESA_FORMAT_XRGB8888:
 126             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 127             break;
 128          default:
 129             continue;
 130          }
 131
 132          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 133                                        irb->draw_x,
 134                                        irb->draw_y,
 135                                        irb->Base.Base.Width,
 136                                        irb->Base.Base.Height,
 137                                        format,
 138                                        irb->mt->region->pitch *
 139                                        irb->mt->region->cpp,
 140                                        0);
 141       }
 142    }
 143 }
 144
 145 static const __DRItexBufferExtension intelTexBufferExtension = {
 146     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 147    intelSetTexBuffer,
 148    intelSetTexBuffer2,
 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    if (intel->gen < 4)
 160       INTEL_FIREVERTICES(intel);
 161
 162    intel->need_throttle = true;
 163
 164    if (intel->batch.used)
 165       intel_batchbuffer_flush(intel);
 166
 167    if (INTEL_DEBUG & DEBUG_AUB) {
 168       aub_dump_bmp(ctx);
 169    }
 170 }
 171
 172 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 173     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 174     intelDRI2Flush,
 175     dri2InvalidateDrawable,
 176 };
 177
 178 static __DRIimage *
 179 intel_create_image_from_name(__DRIscreen *screen,
 180                              int width, int height, int format,
 181                              int name, int pitch, void *loaderPrivate)
 182 {
 183     struct intel_screen *intelScreen = screen->driverPrivate;
 184     __DRIimage *image;
 185     int cpp;
 186
 187     image = CALLOC(sizeof *image);
 188     if (image == NULL)
 189         return NULL;
 190
 191     image->dri_format = format;
 192
 193     switch (format) {
 194     case __DRI_IMAGE_FORMAT_RGB565:
 195        image->format = MESA_FORMAT_RGB565;
 196        image->internal_format = GL_RGB;
 197        image->data_type = GL_UNSIGNED_BYTE;
 198        break;
 199     case __DRI_IMAGE_FORMAT_XRGB8888:
 200        image->format = MESA_FORMAT_XRGB8888;
 201        image->internal_format = GL_RGB;
 202        image->data_type = GL_UNSIGNED_BYTE;
 203        break;
 204     case __DRI_IMAGE_FORMAT_ARGB8888:
 205        image->format = MESA_FORMAT_ARGB8888;
 206        image->internal_format = GL_RGBA;
 207        image->data_type = GL_UNSIGNED_BYTE;
 208        break;
 209     case __DRI_IMAGE_FORMAT_ABGR8888:
 210        image->format = MESA_FORMAT_RGBA8888_REV;
 211        image->internal_format = GL_RGBA;
 212        image->data_type = GL_UNSIGNED_BYTE;
 213        break;
 214     case __DRI_IMAGE_FORMAT_XBGR8888:
 215        image->format = MESA_FORMAT_RGBX8888_REV;
 216        image->internal_format = GL_RGB;
 217        image->data_type = GL_UNSIGNED_BYTE;
 218        break;
 219     default:
 220        free(image);
 221        return NULL;
 222     }
 223
 224     image->data = loaderPrivate;
 225     cpp = _mesa_get_format_bytes(image->format);
 226
 227     image->region = intel_region_alloc_for_handle(intelScreen,
 228                                                   cpp, width, height,
 229                                                   pitch, name, "image");
 230     if (image->region == NULL) {
 231        FREE(image);
 232        return NULL;
 233     }
 234
 235     return image;
 236 }
 237
 238 static __DRIimage *
 239 intel_create_image_from_renderbuffer(__DRIcontext *context,
 240                                      int renderbuffer, void *loaderPrivate)
 241 {
 242    __DRIimage *image;
 243    struct intel_context *intel = context->driverPrivate;
 244    struct gl_renderbuffer *rb;
 245    struct intel_renderbuffer *irb;
 246
 247    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 248    if (!rb) {
 249       _mesa_error(&intel->ctx,
 250                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 251       return NULL;
 252    }
 253
 254    irb = intel_renderbuffer(rb);
 255    image = CALLOC(sizeof *image);
 256    if (image == NULL)
 257       return NULL;
 258
 259    image->internal_format = rb->InternalFormat;
 260    image->format = rb->Format;
 261    image->data_type = GL_UNSIGNED_BYTE;
 262    image->data = loaderPrivate;
 263    intel_region_reference(&image->region, irb->mt->region);
 264
 265    switch (image->format) {
 266    case MESA_FORMAT_RGB565:
 267       image->dri_format = __DRI_IMAGE_FORMAT_RGB565;
 268       break;
 269    case MESA_FORMAT_XRGB8888:
 270       image->dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
 271       break;
 272    case MESA_FORMAT_ARGB8888:
 273       image->dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
 274       break;
 275    case MESA_FORMAT_RGBA8888_REV:
 276       image->dri_format = __DRI_IMAGE_FORMAT_ABGR8888;
 277       break;
 278    }
 279
 280    return image;
 281 }
 282
 283 static void
 284 intel_destroy_image(__DRIimage *image)
 285 {
 286     intel_region_release(&image->region);
 287     FREE(image);
 288 }
 289
 290 static __DRIimage *
 291 intel_create_image(__DRIscreen *screen,
 292                    int width, int height, int format,
 293                    unsigned int use,
 294                    void *loaderPrivate)
 295 {
 296    __DRIimage *image;
 297    struct intel_screen *intelScreen = screen->driverPrivate;
 298    uint32_t tiling;
 299    int cpp;
 300
 301    tiling = I915_TILING_X;
 302    if (use & __DRI_IMAGE_USE_CURSOR) {
 303       if (width != 64 || height != 64)
 304          return NULL;
 305       tiling = I915_TILING_NONE;
 306    }
 307
 308    image = CALLOC(sizeof *image);
 309    if (image == NULL)
 310       return NULL;
 311
 312    image->dri_format = format;
 313
 314    switch (format) {
 315    case __DRI_IMAGE_FORMAT_RGB565:
 316       image->format = MESA_FORMAT_RGB565;
 317       image->internal_format = GL_RGB;
 318       image->data_type = GL_UNSIGNED_BYTE;
 319       break;
 320    case __DRI_IMAGE_FORMAT_XRGB8888:
 321       image->format = MESA_FORMAT_XRGB8888;
 322       image->internal_format = GL_RGB;
 323       image->data_type = GL_UNSIGNED_BYTE;
 324       break;
 325    case __DRI_IMAGE_FORMAT_ARGB8888:
 326       image->format = MESA_FORMAT_ARGB8888;
 327       image->internal_format = GL_RGBA;
 328       image->data_type = GL_UNSIGNED_BYTE;
 329       break;
 330     case __DRI_IMAGE_FORMAT_ABGR8888:
 331        image->format = MESA_FORMAT_RGBA8888_REV;
 332        image->internal_format = GL_RGBA;
 333        image->data_type = GL_UNSIGNED_BYTE;
 334        break;
 335     case __DRI_IMAGE_FORMAT_XBGR8888:
 336        image->format = MESA_FORMAT_RGBX8888_REV;
 337        image->internal_format = GL_RGB;
 338        image->data_type = GL_UNSIGNED_BYTE;
 339        break;
 340    default:
 341       free(image);
 342       return NULL;
 343    }
 344
 345    image->data = loaderPrivate;
 346    cpp = _mesa_get_format_bytes(image->format);
 347
 348    image->region =
 349       intel_region_alloc(intelScreen, tiling,
 350                          cpp, width, height, true);
 351    if (image->region == NULL) {
 352       FREE(image);
 353       return NULL;
 354    }
 355
 356    return image;
 357 }
 358
 359 static GLboolean
 360 intel_query_image(__DRIimage *image, int attrib, int *value)
 361 {
 362    switch (attrib) {
 363    case __DRI_IMAGE_ATTRIB_STRIDE:
 364       *value = image->region->pitch * image->region->cpp;
 365       return true;
 366    case __DRI_IMAGE_ATTRIB_HANDLE:
 367       *value = image->region->bo->handle;
 368       return true;
 369    case __DRI_IMAGE_ATTRIB_NAME:
 370       return intel_region_flink(image->region, (uint32_t *) value);
 371    case __DRI_IMAGE_ATTRIB_FORMAT:
 372       *value = image->dri_format;
 373       return true;
 374    default:
 375       return false;
 376    }
 377 }
 378
 379 static __DRIimage *
 380 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 381 {
 382    __DRIimage *image;
 383
 384    image = CALLOC(sizeof *image);
 385    if (image == NULL)
 386       return NULL;
 387
 388    intel_region_reference(&image->region, orig_image->region);
 389    if (image->region == NULL) {
 390       FREE(image);
 391       return NULL;
 392    }
 393
 394    image->internal_format = orig_image->internal_format;
 395    image->dri_format      = orig_image->dri_format;
 396    image->format          = orig_image->format;
 397    image->data_type       = orig_image->data_type;
 398    image->data            = loaderPrivate;
 399
 400    return image;
 401 }
 402
 403 static GLboolean
 404 intel_validate_usage(__DRIimage *image, unsigned int use)
 405 {
 406    if (use & __DRI_IMAGE_USE_CURSOR) {
 407       if (image->region->width != 64 || image->region->height != 64)
 408          return GL_FALSE;
 409    }
 410
 411    return GL_TRUE;
 412 }
 413
 414 static struct __DRIimageExtensionRec intelImageExtension = {
 415     { __DRI_IMAGE, 3 },
 416     intel_create_image_from_name,
 417     intel_create_image_from_renderbuffer,
 418     intel_destroy_image,
 419     intel_create_image,
 420     intel_query_image,
 421     intel_dup_image,
 422     intel_validate_usage
 423 };
 424
 425 static const __DRIextension *intelScreenExtensions[] = {
 426     &intelTexBufferExtension.base,
 427     &intelFlushExtension.base,
 428     &intelImageExtension.base,
 429     &dri2ConfigQueryExtension.base,
 430     NULL
 431 };
 432
 433 static bool
 434 intel_get_param(__DRIscreen *psp, int param, int *value)
 435 {
 436    int ret;
 437    struct drm_i915_getparam gp;
 438
 439    memset(&gp, 0, sizeof(gp));
 440    gp.param = param;
 441    gp.value = value;
 442
 443    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 444    if (ret) {
 445       if (ret != -EINVAL)
 446          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 447       return false;
 448    }
 449
 450    return true;
 451 }
 452
 453 static bool
 454 intel_get_boolean(__DRIscreen *psp, int param)
 455 {
 456    int value = 0;
 457    return intel_get_param(psp, param, &value) && value;
 458 }
 459
 460 static void
 461 nop_callback(GLuint key, void *data, void *userData)
 462 {
 463 }
 464
 465 static void
 466 intelDestroyScreen(__DRIscreen * sPriv)
 467 {
 468    struct intel_screen *intelScreen = sPriv->driverPrivate;
 469
 470    dri_bufmgr_destroy(intelScreen->bufmgr);
 471    driDestroyOptionInfo(&intelScreen->optionCache);
 472
 473    /* Some regions may still have references to them at this point, so
 474     * flush the hash table to prevent _mesa_DeleteHashTable() from
 475     * complaining about the hash not being empty; */
 476    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 477    _mesa_DeleteHashTable(intelScreen->named_regions);
 478
 479    FREE(intelScreen);
 480    sPriv->driverPrivate = NULL;
 481 }
 482
 483
 484 /**
 485  * This is called when we need to set up GL rendering to a new X window.
 486  */
 487 static GLboolean
 488 intelCreateBuffer(__DRIscreen * driScrnPriv,
 489                   __DRIdrawable * driDrawPriv,
 490                   const struct gl_config * mesaVis, GLboolean isPixmap)
 491 {
 492    struct intel_renderbuffer *rb;
 493    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 494
 495    if (isPixmap) {
 496       return false;          /* not implemented */
 497    }
 498    else {
 499       gl_format rgbFormat;
 500
 501       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 502
 503       if (!fb)
 504          return false;
 505
 506       _mesa_initialize_window_framebuffer(fb, mesaVis);
 507
 508       if (mesaVis->redBits == 5)
 509          rgbFormat = MESA_FORMAT_RGB565;
 510       else if (mesaVis->alphaBits == 0)
 511          rgbFormat = MESA_FORMAT_XRGB8888;
 512       else
 513          rgbFormat = MESA_FORMAT_ARGB8888;
 514
 515       /* setup the hardware-based renderbuffers */
 516       rb = intel_create_renderbuffer(rgbFormat);
 517       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 518
 519       if (mesaVis->doubleBufferMode) {
 520          rb = intel_create_renderbuffer(rgbFormat);
 521          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 522       }
 523
 524       /*
 525        * Assert here that the gl_config has an expected depth/stencil bit
 526        * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 527        * which constructs the advertised configs.)
 528        */
 529       if (mesaVis->depthBits == 24) {
 530          assert(mesaVis->stencilBits == 8);
 531
 532          if (screen->hw_has_separate_stencil
 533              && screen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE) {
 534             /*
 535              * Request a separate stencil buffer even if we do not yet know if
 536              * the screen supports it. (See comments for
 537              * enum intel_dri2_has_hiz).
 538              */
 539             rb = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 540             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 541             rb = intel_create_renderbuffer(MESA_FORMAT_S8);
 542             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 543          } else {
 544             /*
 545              * Use combined depth/stencil. Note that the renderbuffer is
 546              * attached to two attachment points.
 547              */
 548             rb = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 549             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 550             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 551          }
 552       }
 553       else if (mesaVis->depthBits == 16) {
 554          assert(mesaVis->stencilBits == 0);
 555          /* just 16-bit depth buffer, no hw stencil */
 556          struct intel_renderbuffer *depthRb
 557             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 558          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base.Base);
 559       }
 560       else {
 561          assert(mesaVis->depthBits == 0);
 562          assert(mesaVis->stencilBits == 0);
 563       }
 564
 565       /* now add any/all software-based renderbuffers we may need */
 566       _swrast_add_soft_renderbuffers(fb,
 567                                      false, /* never sw color */
 568                                      false, /* never sw depth */
 569                                      false, /* never sw stencil */
 570                                      mesaVis->accumRedBits > 0,
 571                                      false, /* never sw alpha */
 572                                      false  /* never sw aux */ );
 573       driDrawPriv->driverPrivate = fb;
 574
 575       return true;
 576    }
 577 }
 578
 579 static void
 580 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 581 {
 582     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 583
 584     _mesa_reference_framebuffer(&fb, NULL);
 585 }
 586
 587 /* There are probably better ways to do this, such as an
 588  * init-designated function to register chipids and createcontext
 589  * functions.
 590  */
 591 extern bool
 592 i830CreateContext(const struct gl_config *mesaVis,
 593                   __DRIcontext *driContextPriv,
 594                   void *sharedContextPrivate);
 595
 596 extern bool
 597 i915CreateContext(int api,
 598                   const struct gl_config *mesaVis,
 599                   __DRIcontext *driContextPriv,
 600                   void *sharedContextPrivate);
 601 extern bool
 602 brwCreateContext(int api,
 603                  const struct gl_config *mesaVis,
 604                  __DRIcontext *driContextPriv,
 605                  void *sharedContextPrivate);
 606
 607 static GLboolean
 608 intelCreateContext(gl_api api,
 609                    const struct gl_config * mesaVis,
 610                    __DRIcontext * driContextPriv,
 611                    unsigned major_version,
 612                    unsigned minor_version,
 613                    uint32_t flags,
 614                    unsigned *error,
 615                    void *sharedContextPrivate)
 616 {
 617    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 618    struct intel_screen *intelScreen = sPriv->driverPrivate;
 619    bool success = false;
 620
 621 #ifdef I915
 622    if (IS_9XX(intelScreen->deviceID)) {
 623       if (!IS_965(intelScreen->deviceID)) {
 624          success = i915CreateContext(api, mesaVis, driContextPriv,
 625                                      sharedContextPrivate);
 626       }
 627    } else {
 628       intelScreen->no_vbo = true;
 629       success = i830CreateContext(mesaVis, driContextPriv,
 630                                   sharedContextPrivate);
 631    }
 632 #else
 633    if (IS_965(intelScreen->deviceID))
 634       success = brwCreateContext(api, mesaVis,
 635                               driContextPriv,
 636                               sharedContextPrivate);
 637 #endif
 638
 639    if (success) {
 640       struct gl_context *ctx =
 641          (struct gl_context *) driContextPriv->driverPrivate;
 642
 643       _mesa_compute_version(ctx);
 644       if (ctx->VersionMajor > major_version
 645           || (ctx->VersionMajor == major_version
 646               && ctx->VersionMinor >= minor_version)) {
 647          *error = __DRI_CTX_ERROR_BAD_VERSION;
 648          return true;
 649       }
 650
 651       intelDestroyContext(driContextPriv);
 652    } else {
 653       *error = __DRI_CTX_ERROR_NO_MEMORY;
 654       fprintf(stderr, "Unrecognized deviceID 0x%x\n", intelScreen->deviceID);
 655    }
 656
 657    return false;
 658 }
 659
 660 static bool
 661 intel_init_bufmgr(struct intel_screen *intelScreen)
 662 {
 663    __DRIscreen *spriv = intelScreen->driScrnPriv;
 664    int num_fences = 0;
 665
 666    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 667
 668    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 669    if (intelScreen->bufmgr == NULL) {
 670       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 671               __func__, __LINE__);
 672       return false;
 673    }
 674
 675    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 676        num_fences == 0) {
 677       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 678       return false;
 679    }
 680
 681    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 682
 683    intelScreen->named_regions = _mesa_NewHashTable();
 684
 685    intelScreen->relaxed_relocations = 0;
 686    intelScreen->relaxed_relocations |=
 687       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 688
 689    return true;
 690 }
 691
 692 /**
 693  * Override intel_screen.hw_has_separate_stencil with environment variable
 694  * INTEL_SEPARATE_STENCIL.
 695  *
 696  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 697  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 698  * is ignored.
 699  */
 700 static void
 701 intel_override_separate_stencil(struct intel_screen *screen)
 702 {
 703    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 704    if (!s) {
 705       return;
 706    } else if (!strncmp("0", s, 2)) {
 707       screen->hw_has_separate_stencil = false;
 708    } else if (!strncmp("1", s, 2)) {
 709       screen->hw_has_separate_stencil = true;
 710    } else {
 711       fprintf(stderr,
 712               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 713               "invalid value and is ignored", s);
 714    }
 715 }
 716
 717 static bool
 718 intel_detect_swizzling(struct intel_screen *screen)
 719 {
 720    drm_intel_bo *buffer;
 721    unsigned long flags = 0;
 722    unsigned long aligned_pitch;
 723    uint32_t tiling = I915_TILING_X;
 724    uint32_t swizzle_mode = 0;
 725
 726    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 727                                      64, 64, 4,
 728                                      &tiling, &aligned_pitch, flags);
 729    if (buffer == NULL)
 730       return false;
 731
 732    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 733    drm_intel_bo_unreference(buffer);
 734
 735    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 736       return false;
 737    else
 738       return true;
 739 }
 740
 741 /**
 742  * This is the driver specific part of the createNewScreen entry point.
 743  * Called when using DRI2.
 744  *
 745  * \return the struct gl_config supported by this driver
 746  */
 747 static const
 748 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 749 {
 750    struct intel_screen *intelScreen;
 751    GLenum fb_format[3];
 752    GLenum fb_type[3];
 753    unsigned int api_mask;
 754
 755    static const GLenum back_buffer_modes[] = {
 756        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 757    };
 758    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 759    int color;
 760    __DRIconfig **configs = NULL;
 761
 762    /* Allocate the private area */
 763    intelScreen = CALLOC(sizeof *intelScreen);
 764    if (!intelScreen) {
 765       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 766       return false;
 767    }
 768    /* parse information in __driConfigOptions */
 769    driParseOptionInfo(&intelScreen->optionCache,
 770                       __driConfigOptions, __driNConfigOptions);
 771
 772    intelScreen->driScrnPriv = psp;
 773    psp->driverPrivate = (void *) intelScreen;
 774
 775    if (!intel_init_bufmgr(intelScreen))
 776        return false;
 777
 778    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
 779
 780    intelScreen->kernel_has_gen7_sol_reset =
 781       intel_get_boolean(intelScreen->driScrnPriv,
 782                         I915_PARAM_HAS_GEN7_SOL_RESET);
 783
 784    if (IS_GEN7(intelScreen->deviceID)) {
 785       intelScreen->gen = 7;
 786    } else if (IS_GEN6(intelScreen->deviceID)) {
 787       intelScreen->gen = 6;
 788    } else if (IS_GEN5(intelScreen->deviceID)) {
 789       intelScreen->gen = 5;
 790    } else if (IS_965(intelScreen->deviceID)) {
 791       intelScreen->gen = 4;
 792    } else if (IS_9XX(intelScreen->deviceID)) {
 793       intelScreen->gen = 3;
 794    } else {
 795       intelScreen->gen = 2;
 796    }
 797
 798    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
 799    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
 800    intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_UNKNOWN;
 801
 802    int has_llc = 0;
 803    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
 804                                   &has_llc);
 805    if (success && has_llc)
 806       intelScreen->hw_has_llc = true;
 807    else if (!success && intelScreen->gen >= 6)
 808       intelScreen->hw_has_llc = true;
 809
 810    intel_override_separate_stencil(intelScreen);
 811
 812    api_mask = (1 << __DRI_API_OPENGL);
 813 #if FEATURE_ES1
 814    api_mask |= (1 << __DRI_API_GLES);
 815 #endif
 816 #if FEATURE_ES2
 817    api_mask |= (1 << __DRI_API_GLES2);
 818 #endif
 819
 820    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
 821       psp->api_mask = api_mask;
 822
 823    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
 824
 825    psp->extensions = intelScreenExtensions;
 826
 827    msaa_samples_array[0] = 0;
 828
 829    fb_format[0] = GL_RGB;
 830    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 831
 832    fb_format[1] = GL_BGR;
 833    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 834
 835    fb_format[2] = GL_BGRA;
 836    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 837
 838    depth_bits[0] = 0;
 839    stencil_bits[0] = 0;
 840
 841    /* Generate a rich set of useful configs that do not include an
 842     * accumulation buffer.
 843     */
 844    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 845       __DRIconfig **new_configs;
 846       int depth_factor;
 847
 848       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 849        * buffer that has a diffferent number of bits per pixel than the color
 850        * buffer.  This isn't yet supported here.
 851        */
 852       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 853          depth_bits[1] = 16;
 854          stencil_bits[1] = 0;
 855       } else {
 856          depth_bits[1] = 24;
 857          stencil_bits[1] = 8;
 858       }
 859
 860       depth_factor = 2;
 861
 862       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 863                                      depth_bits,
 864                                      stencil_bits,
 865                                      depth_factor,
 866                                      back_buffer_modes,
 867                                      ARRAY_SIZE(back_buffer_modes),
 868                                      msaa_samples_array,
 869                                      ARRAY_SIZE(msaa_samples_array),
 870                                      false);
 871       if (configs == NULL)
 872          configs = new_configs;
 873       else
 874          configs = driConcatConfigs(configs, new_configs);
 875    }
 876
 877    /* Generate the minimum possible set of configs that include an
 878     * accumulation buffer.
 879     */
 880    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 881       __DRIconfig **new_configs;
 882
 883       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 884          depth_bits[0] = 16;
 885          stencil_bits[0] = 0;
 886       } else {
 887          depth_bits[0] = 24;
 888          stencil_bits[0] = 8;
 889       }
 890
 891       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 892                                      depth_bits, stencil_bits, 1,
 893                                      back_buffer_modes + 1, 1,
 894                                      msaa_samples_array, 1,
 895                                      true);
 896       if (configs == NULL)
 897          configs = new_configs;
 898       else
 899          configs = driConcatConfigs(configs, new_configs);
 900    }
 901
 902    if (configs == NULL) {
 903       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 904               __LINE__);
 905       return NULL;
 906    }
 907
 908    return (const __DRIconfig **)configs;
 909 }
 910
 911 struct intel_buffer {
 912    __DRIbuffer base;
 913    struct intel_region *region;
 914 };
 915
 916 /**
 917  * \brief Get tiling format for a DRI buffer.
 918  *
 919  * \param attachment is the buffer's attachmet point, such as
 920  *        __DRI_BUFFER_DEPTH.
 921  * \param out_tiling is the returned tiling format for buffer.
 922  * \return false if attachment is unrecognized or is incompatible with screen.
 923  */
 924 static bool
 925 intel_get_dri_buffer_tiling(struct intel_screen *screen,
 926                             uint32_t attachment,
 927                             uint32_t *out_tiling)
 928 {
 929    if (screen->gen < 4) {
 930       *out_tiling = I915_TILING_X;
 931       return true;
 932    }
 933
 934    switch (attachment) {
 935    case __DRI_BUFFER_DEPTH:
 936    case __DRI_BUFFER_DEPTH_STENCIL:
 937    case __DRI_BUFFER_HIZ:
 938       *out_tiling = I915_TILING_Y;
 939       return true;
 940    case __DRI_BUFFER_ACCUM:
 941    case __DRI_BUFFER_FRONT_LEFT:
 942    case __DRI_BUFFER_FRONT_RIGHT:
 943    case __DRI_BUFFER_BACK_LEFT:
 944    case __DRI_BUFFER_BACK_RIGHT:
 945    case __DRI_BUFFER_FAKE_FRONT_LEFT:
 946    case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 947       *out_tiling = I915_TILING_X;
 948       return true;
 949    case __DRI_BUFFER_STENCIL:
 950       /* The stencil buffer is W tiled. However, we request from the kernel
 951        * a non-tiled buffer because the GTT is incapable of W fencing.
 952        */
 953       *out_tiling = I915_TILING_NONE;
 954       return true;
 955    default:
 956       if(unlikely(INTEL_DEBUG & DEBUG_DRI)) {
 957          fprintf(stderr, "error: %s: unrecognized DRI buffer attachment 0x%x\n",
 958                  __FUNCTION__, attachment);
 959       }
 960        return false;
 961    }
 962 }
 963
 964 static __DRIbuffer *
 965 intelAllocateBuffer(__DRIscreen *screen,
 966                     unsigned attachment, unsigned format,
 967                     int width, int height)
 968 {
 969    struct intel_buffer *intelBuffer;
 970    struct intel_screen *intelScreen = screen->driverPrivate;
 971
 972    uint32_t tiling;
 973    uint32_t region_width;
 974    uint32_t region_height;
 975    uint32_t region_cpp;
 976
 977    bool ok = true;
 978
 979    ok = intel_get_dri_buffer_tiling(intelScreen, attachment, &tiling);
 980    if (!ok)
 981       return NULL;
 982
 983    intelBuffer = CALLOC(sizeof *intelBuffer);
 984    if (intelBuffer == NULL)
 985       return NULL;
 986
 987    if (attachment == __DRI_BUFFER_STENCIL) {
 988       /* Stencil buffers use W tiling, a tiling format that the DRM functions
 989        * don't properly account for.  Therefore, when we allocate a stencil
 990        * buffer that is private to Mesa (see intel_miptree_create), we round
 991        * the height and width up to the next multiple of the tile size (64x64)
 992        * and then ask DRM to allocate an untiled buffer.  Consequently, the
 993        * height and the width stored in the stencil buffer's region structure
 994        * are always multiples of 64, even if the stencil buffer itself is
 995        * smaller.
 996        *
 997        * To avoid inconsistencies between how we represent private buffers and
 998        * buffers shared with the window system, round up the height and width
 999        * for window system buffers too.
1000        */
1001       region_width = ALIGN(width, 64);
1002       region_height = ALIGN(height, 64);
1003    } else {
1004       region_width = width;
1005       region_height = height;
1006    }
1007
1008    region_cpp = format / 8;
1009
1010    intelBuffer->region = intel_region_alloc(intelScreen,
1011                                             tiling,
1012                                             region_cpp,
1013                                             region_width,
1014                                             region_height,
1015                                             true);
1016
1017    if (intelBuffer->region == NULL) {
1018            FREE(intelBuffer);
1019            return NULL;
1020    }
1021
1022    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1023
1024    intelBuffer->base.attachment = attachment;
1025    intelBuffer->base.cpp = intelBuffer->region->cpp;
1026    intelBuffer->base.pitch =
1027          intelBuffer->region->pitch * intelBuffer->region->cpp;
1028
1029    return &intelBuffer->base;
1030 }
1031
1032 static void
1033 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1034 {
1035    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1036
1037    intel_region_release(&intelBuffer->region);
1038    free(intelBuffer);
1039 }
1040
1041
1042 const struct __DriverAPIRec driDriverAPI = {
1043    .InitScreen           = intelInitScreen2,
1044    .DestroyScreen        = intelDestroyScreen,
1045    .CreateContext        = intelCreateContext,
1046    .DestroyContext       = intelDestroyContext,
1047    .CreateBuffer         = intelCreateBuffer,
1048    .DestroyBuffer        = intelDestroyBuffer,
1049    .MakeCurrent          = intelMakeCurrent,
1050    .UnbindContext        = intelUnbindContext,
1051    .AllocateBuffer       = intelAllocateBuffer,
1052    .ReleaseBuffer        = intelReleaseBuffer
1053 };
1054
1055 /* This is the table of extensions that the loader will dlsym() for. */
1056 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1057     &driCoreExtension.base,
1058     &driDRI2Extension.base,
1059     NULL
1060 };