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    /* We only support write for cursor drm images */
 309    if ((use & __DRI_IMAGE_USE_WRITE) &&
 310        use != (__DRI_IMAGE_USE_WRITE | __DRI_IMAGE_USE_CURSOR))
 311       return NULL;
 312
 313    image = CALLOC(sizeof *image);
 314    if (image == NULL)
 315       return NULL;
 316
 317    image->usage = use;
 318    image->dri_format = format;
 319
 320    switch (format) {
 321    case __DRI_IMAGE_FORMAT_RGB565:
 322       image->format = MESA_FORMAT_RGB565;
 323       image->internal_format = GL_RGB;
 324       image->data_type = GL_UNSIGNED_BYTE;
 325       break;
 326    case __DRI_IMAGE_FORMAT_XRGB8888:
 327       image->format = MESA_FORMAT_XRGB8888;
 328       image->internal_format = GL_RGB;
 329       image->data_type = GL_UNSIGNED_BYTE;
 330       break;
 331    case __DRI_IMAGE_FORMAT_ARGB8888:
 332       image->format = MESA_FORMAT_ARGB8888;
 333       image->internal_format = GL_RGBA;
 334       image->data_type = GL_UNSIGNED_BYTE;
 335       break;
 336     case __DRI_IMAGE_FORMAT_ABGR8888:
 337        image->format = MESA_FORMAT_RGBA8888_REV;
 338        image->internal_format = GL_RGBA;
 339        image->data_type = GL_UNSIGNED_BYTE;
 340        break;
 341     case __DRI_IMAGE_FORMAT_XBGR8888:
 342        image->format = MESA_FORMAT_RGBX8888_REV;
 343        image->internal_format = GL_RGB;
 344        image->data_type = GL_UNSIGNED_BYTE;
 345        break;
 346    default:
 347       free(image);
 348       return NULL;
 349    }
 350
 351    image->data = loaderPrivate;
 352    cpp = _mesa_get_format_bytes(image->format);
 353
 354    image->region =
 355       intel_region_alloc(intelScreen, tiling,
 356                          cpp, width, height, true);
 357    if (image->region == NULL) {
 358       FREE(image);
 359       return NULL;
 360    }
 361
 362    return image;
 363 }
 364
 365 static GLboolean
 366 intel_query_image(__DRIimage *image, int attrib, int *value)
 367 {
 368    switch (attrib) {
 369    case __DRI_IMAGE_ATTRIB_STRIDE:
 370       *value = image->region->pitch * image->region->cpp;
 371       return true;
 372    case __DRI_IMAGE_ATTRIB_HANDLE:
 373       *value = image->region->bo->handle;
 374       return true;
 375    case __DRI_IMAGE_ATTRIB_NAME:
 376       return intel_region_flink(image->region, (uint32_t *) value);
 377    case __DRI_IMAGE_ATTRIB_FORMAT:
 378       *value = image->dri_format;
 379       return true;
 380    default:
 381       return false;
 382    }
 383 }
 384
 385 static __DRIimage *
 386 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 387 {
 388    __DRIimage *image;
 389
 390    image = CALLOC(sizeof *image);
 391    if (image == NULL)
 392       return NULL;
 393
 394    intel_region_reference(&image->region, orig_image->region);
 395    if (image->region == NULL) {
 396       FREE(image);
 397       return NULL;
 398    }
 399
 400    image->internal_format = orig_image->internal_format;
 401    image->usage           = orig_image->usage;
 402    image->dri_format      = orig_image->dri_format;
 403    image->format          = orig_image->format;
 404    image->data_type       = orig_image->data_type;
 405    image->data            = loaderPrivate;
 406
 407    return image;
 408 }
 409
 410 static GLboolean
 411 intel_validate_usage(__DRIimage *image, unsigned int use)
 412 {
 413    if (use & __DRI_IMAGE_USE_CURSOR) {
 414       if (image->region->width != 64 || image->region->height != 64)
 415          return GL_FALSE;
 416    }
 417
 418    /* We only support write for cursor drm images */
 419    if ((use & __DRI_IMAGE_USE_WRITE) &&
 420        use != (__DRI_IMAGE_USE_WRITE | __DRI_IMAGE_USE_CURSOR))
 421       return GL_FALSE;
 422
 423    return GL_TRUE;
 424 }
 425
 426 static int
 427 intel_image_write(__DRIimage *image, const void *buf, size_t count)
 428 {
 429    if (image->region->map_refcount)
 430       return -1;
 431    if (!(image->usage & __DRI_IMAGE_USE_WRITE))
 432       return -1;
 433
 434    drm_intel_bo_map(image->region->bo, true);
 435    memcpy(image->region->bo->virtual, buf, count);
 436    drm_intel_bo_unmap(image->region->bo);
 437
 438    return 0;
 439 }
 440
 441 static struct __DRIimageExtensionRec intelImageExtension = {
 442     { __DRI_IMAGE, 4 },
 443     intel_create_image_from_name,
 444     intel_create_image_from_renderbuffer,
 445     intel_destroy_image,
 446     intel_create_image,
 447     intel_query_image,
 448     intel_dup_image,
 449     intel_validate_usage,
 450     intel_image_write
 451 };
 452
 453 static const __DRIextension *intelScreenExtensions[] = {
 454     &intelTexBufferExtension.base,
 455     &intelFlushExtension.base,
 456     &intelImageExtension.base,
 457     &dri2ConfigQueryExtension.base,
 458     NULL
 459 };
 460
 461 static bool
 462 intel_get_param(__DRIscreen *psp, int param, int *value)
 463 {
 464    int ret;
 465    struct drm_i915_getparam gp;
 466
 467    memset(&gp, 0, sizeof(gp));
 468    gp.param = param;
 469    gp.value = value;
 470
 471    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 472    if (ret) {
 473       if (ret != -EINVAL)
 474          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 475       return false;
 476    }
 477
 478    return true;
 479 }
 480
 481 static bool
 482 intel_get_boolean(__DRIscreen *psp, int param)
 483 {
 484    int value = 0;
 485    return intel_get_param(psp, param, &value) && value;
 486 }
 487
 488 static void
 489 nop_callback(GLuint key, void *data, void *userData)
 490 {
 491 }
 492
 493 static void
 494 intelDestroyScreen(__DRIscreen * sPriv)
 495 {
 496    struct intel_screen *intelScreen = sPriv->driverPrivate;
 497
 498    dri_bufmgr_destroy(intelScreen->bufmgr);
 499    driDestroyOptionInfo(&intelScreen->optionCache);
 500
 501    /* Some regions may still have references to them at this point, so
 502     * flush the hash table to prevent _mesa_DeleteHashTable() from
 503     * complaining about the hash not being empty; */
 504    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 505    _mesa_DeleteHashTable(intelScreen->named_regions);
 506
 507    FREE(intelScreen);
 508    sPriv->driverPrivate = NULL;
 509 }
 510
 511
 512 /**
 513  * This is called when we need to set up GL rendering to a new X window.
 514  */
 515 static GLboolean
 516 intelCreateBuffer(__DRIscreen * driScrnPriv,
 517                   __DRIdrawable * driDrawPriv,
 518                   const struct gl_config * mesaVis, GLboolean isPixmap)
 519 {
 520    struct intel_renderbuffer *rb;
 521    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 522
 523    if (isPixmap) {
 524       return false;          /* not implemented */
 525    }
 526    else {
 527       gl_format rgbFormat;
 528
 529       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 530
 531       if (!fb)
 532          return false;
 533
 534       _mesa_initialize_window_framebuffer(fb, mesaVis);
 535
 536       if (mesaVis->redBits == 5)
 537          rgbFormat = MESA_FORMAT_RGB565;
 538       else if (mesaVis->alphaBits == 0)
 539          rgbFormat = MESA_FORMAT_XRGB8888;
 540       else
 541          rgbFormat = MESA_FORMAT_ARGB8888;
 542
 543       /* setup the hardware-based renderbuffers */
 544       rb = intel_create_renderbuffer(rgbFormat);
 545       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 546
 547       if (mesaVis->doubleBufferMode) {
 548          rb = intel_create_renderbuffer(rgbFormat);
 549          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 550       }
 551
 552       /*
 553        * Assert here that the gl_config has an expected depth/stencil bit
 554        * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 555        * which constructs the advertised configs.)
 556        */
 557       if (mesaVis->depthBits == 24) {
 558          assert(mesaVis->stencilBits == 8);
 559
 560          if (screen->hw_has_separate_stencil
 561              && screen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE) {
 562             /*
 563              * Request a separate stencil buffer even if we do not yet know if
 564              * the screen supports it. (See comments for
 565              * enum intel_dri2_has_hiz).
 566              */
 567             rb = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 568             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 569             rb = intel_create_renderbuffer(MESA_FORMAT_S8);
 570             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 571          } else {
 572             /*
 573              * Use combined depth/stencil. Note that the renderbuffer is
 574              * attached to two attachment points.
 575              */
 576             rb = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 577             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 578             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 579          }
 580       }
 581       else if (mesaVis->depthBits == 16) {
 582          assert(mesaVis->stencilBits == 0);
 583          /* just 16-bit depth buffer, no hw stencil */
 584          struct intel_renderbuffer *depthRb
 585             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 586          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base.Base);
 587       }
 588       else {
 589          assert(mesaVis->depthBits == 0);
 590          assert(mesaVis->stencilBits == 0);
 591       }
 592
 593       /* now add any/all software-based renderbuffers we may need */
 594       _swrast_add_soft_renderbuffers(fb,
 595                                      false, /* never sw color */
 596                                      false, /* never sw depth */
 597                                      false, /* never sw stencil */
 598                                      mesaVis->accumRedBits > 0,
 599                                      false, /* never sw alpha */
 600                                      false  /* never sw aux */ );
 601       driDrawPriv->driverPrivate = fb;
 602
 603       return true;
 604    }
 605 }
 606
 607 static void
 608 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 609 {
 610     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 611
 612     _mesa_reference_framebuffer(&fb, NULL);
 613 }
 614
 615 /* There are probably better ways to do this, such as an
 616  * init-designated function to register chipids and createcontext
 617  * functions.
 618  */
 619 extern bool
 620 i830CreateContext(const struct gl_config *mesaVis,
 621                   __DRIcontext *driContextPriv,
 622                   void *sharedContextPrivate);
 623
 624 extern bool
 625 i915CreateContext(int api,
 626                   const struct gl_config *mesaVis,
 627                   __DRIcontext *driContextPriv,
 628                   void *sharedContextPrivate);
 629 extern bool
 630 brwCreateContext(int api,
 631                  const struct gl_config *mesaVis,
 632                  __DRIcontext *driContextPriv,
 633                  void *sharedContextPrivate);
 634
 635 static GLboolean
 636 intelCreateContext(gl_api api,
 637                    const struct gl_config * mesaVis,
 638                    __DRIcontext * driContextPriv,
 639                    unsigned major_version,
 640                    unsigned minor_version,
 641                    uint32_t flags,
 642                    unsigned *error,
 643                    void *sharedContextPrivate)
 644 {
 645    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 646    struct intel_screen *intelScreen = sPriv->driverPrivate;
 647    bool success = false;
 648
 649 #ifdef I915
 650    if (IS_9XX(intelScreen->deviceID)) {
 651       if (!IS_965(intelScreen->deviceID)) {
 652          success = i915CreateContext(api, mesaVis, driContextPriv,
 653                                      sharedContextPrivate);
 654       }
 655    } else {
 656       intelScreen->no_vbo = true;
 657       success = i830CreateContext(mesaVis, driContextPriv,
 658                                   sharedContextPrivate);
 659    }
 660 #else
 661    if (IS_965(intelScreen->deviceID))
 662       success = brwCreateContext(api, mesaVis,
 663                               driContextPriv,
 664                               sharedContextPrivate);
 665 #endif
 666
 667    if (success) {
 668       struct gl_context *ctx =
 669          (struct gl_context *) driContextPriv->driverPrivate;
 670
 671       _mesa_compute_version(ctx);
 672       if (ctx->VersionMajor > major_version
 673           || (ctx->VersionMajor == major_version
 674               && ctx->VersionMinor >= minor_version)) {
 675          *error = __DRI_CTX_ERROR_BAD_VERSION;
 676          return true;
 677       }
 678
 679       intelDestroyContext(driContextPriv);
 680    } else {
 681       *error = __DRI_CTX_ERROR_NO_MEMORY;
 682       fprintf(stderr, "Unrecognized deviceID 0x%x\n", intelScreen->deviceID);
 683    }
 684
 685    return false;
 686 }
 687
 688 static bool
 689 intel_init_bufmgr(struct intel_screen *intelScreen)
 690 {
 691    __DRIscreen *spriv = intelScreen->driScrnPriv;
 692    int num_fences = 0;
 693
 694    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 695
 696    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 697    if (intelScreen->bufmgr == NULL) {
 698       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 699               __func__, __LINE__);
 700       return false;
 701    }
 702
 703    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 704        num_fences == 0) {
 705       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 706       return false;
 707    }
 708
 709    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 710
 711    intelScreen->named_regions = _mesa_NewHashTable();
 712
 713    intelScreen->relaxed_relocations = 0;
 714    intelScreen->relaxed_relocations |=
 715       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 716
 717    return true;
 718 }
 719
 720 /**
 721  * Override intel_screen.hw_has_separate_stencil with environment variable
 722  * INTEL_SEPARATE_STENCIL.
 723  *
 724  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 725  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 726  * is ignored.
 727  */
 728 static void
 729 intel_override_separate_stencil(struct intel_screen *screen)
 730 {
 731    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 732    if (!s) {
 733       return;
 734    } else if (!strncmp("0", s, 2)) {
 735       screen->hw_has_separate_stencil = false;
 736    } else if (!strncmp("1", s, 2)) {
 737       screen->hw_has_separate_stencil = true;
 738    } else {
 739       fprintf(stderr,
 740               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 741               "invalid value and is ignored", s);
 742    }
 743 }
 744
 745 static bool
 746 intel_detect_swizzling(struct intel_screen *screen)
 747 {
 748    drm_intel_bo *buffer;
 749    unsigned long flags = 0;
 750    unsigned long aligned_pitch;
 751    uint32_t tiling = I915_TILING_X;
 752    uint32_t swizzle_mode = 0;
 753
 754    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 755                                      64, 64, 4,
 756                                      &tiling, &aligned_pitch, flags);
 757    if (buffer == NULL)
 758       return false;
 759
 760    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 761    drm_intel_bo_unreference(buffer);
 762
 763    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 764       return false;
 765    else
 766       return true;
 767 }
 768
 769 /**
 770  * This is the driver specific part of the createNewScreen entry point.
 771  * Called when using DRI2.
 772  *
 773  * \return the struct gl_config supported by this driver
 774  */
 775 static const
 776 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 777 {
 778    struct intel_screen *intelScreen;
 779    GLenum fb_format[3];
 780    GLenum fb_type[3];
 781    unsigned int api_mask;
 782
 783    static const GLenum back_buffer_modes[] = {
 784        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 785    };
 786    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 787    int color;
 788    __DRIconfig **configs = NULL;
 789
 790    /* Allocate the private area */
 791    intelScreen = CALLOC(sizeof *intelScreen);
 792    if (!intelScreen) {
 793       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 794       return false;
 795    }
 796    /* parse information in __driConfigOptions */
 797    driParseOptionInfo(&intelScreen->optionCache,
 798                       __driConfigOptions, __driNConfigOptions);
 799
 800    intelScreen->driScrnPriv = psp;
 801    psp->driverPrivate = (void *) intelScreen;
 802
 803    if (!intel_init_bufmgr(intelScreen))
 804        return false;
 805
 806    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
 807
 808    intelScreen->kernel_has_gen7_sol_reset =
 809       intel_get_boolean(intelScreen->driScrnPriv,
 810                         I915_PARAM_HAS_GEN7_SOL_RESET);
 811
 812    if (IS_GEN7(intelScreen->deviceID)) {
 813       intelScreen->gen = 7;
 814    } else if (IS_GEN6(intelScreen->deviceID)) {
 815       intelScreen->gen = 6;
 816    } else if (IS_GEN5(intelScreen->deviceID)) {
 817       intelScreen->gen = 5;
 818    } else if (IS_965(intelScreen->deviceID)) {
 819       intelScreen->gen = 4;
 820    } else if (IS_9XX(intelScreen->deviceID)) {
 821       intelScreen->gen = 3;
 822    } else {
 823       intelScreen->gen = 2;
 824    }
 825
 826    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
 827    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
 828    intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_UNKNOWN;
 829
 830    int has_llc = 0;
 831    bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
 832                                   &has_llc);
 833    if (success && has_llc)
 834       intelScreen->hw_has_llc = true;
 835    else if (!success && intelScreen->gen >= 6)
 836       intelScreen->hw_has_llc = true;
 837
 838    intel_override_separate_stencil(intelScreen);
 839
 840    api_mask = (1 << __DRI_API_OPENGL);
 841 #if FEATURE_ES1
 842    api_mask |= (1 << __DRI_API_GLES);
 843 #endif
 844 #if FEATURE_ES2
 845    api_mask |= (1 << __DRI_API_GLES2);
 846 #endif
 847
 848    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
 849       psp->api_mask = api_mask;
 850
 851    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
 852
 853    psp->extensions = intelScreenExtensions;
 854
 855    msaa_samples_array[0] = 0;
 856
 857    fb_format[0] = GL_RGB;
 858    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 859
 860    fb_format[1] = GL_BGR;
 861    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 862
 863    fb_format[2] = GL_BGRA;
 864    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 865
 866    depth_bits[0] = 0;
 867    stencil_bits[0] = 0;
 868
 869    /* Generate a rich set of useful configs that do not include an
 870     * accumulation buffer.
 871     */
 872    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 873       __DRIconfig **new_configs;
 874       int depth_factor;
 875
 876       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 877        * buffer that has a diffferent number of bits per pixel than the color
 878        * buffer.  This isn't yet supported here.
 879        */
 880       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 881          depth_bits[1] = 16;
 882          stencil_bits[1] = 0;
 883       } else {
 884          depth_bits[1] = 24;
 885          stencil_bits[1] = 8;
 886       }
 887
 888       depth_factor = 2;
 889
 890       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 891                                      depth_bits,
 892                                      stencil_bits,
 893                                      depth_factor,
 894                                      back_buffer_modes,
 895                                      ARRAY_SIZE(back_buffer_modes),
 896                                      msaa_samples_array,
 897                                      ARRAY_SIZE(msaa_samples_array),
 898                                      false);
 899       if (configs == NULL)
 900          configs = new_configs;
 901       else
 902          configs = driConcatConfigs(configs, new_configs);
 903    }
 904
 905    /* Generate the minimum possible set of configs that include an
 906     * accumulation buffer.
 907     */
 908    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 909       __DRIconfig **new_configs;
 910
 911       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 912          depth_bits[0] = 16;
 913          stencil_bits[0] = 0;
 914       } else {
 915          depth_bits[0] = 24;
 916          stencil_bits[0] = 8;
 917       }
 918
 919       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 920                                      depth_bits, stencil_bits, 1,
 921                                      back_buffer_modes + 1, 1,
 922                                      msaa_samples_array, 1,
 923                                      true);
 924       if (configs == NULL)
 925          configs = new_configs;
 926       else
 927          configs = driConcatConfigs(configs, new_configs);
 928    }
 929
 930    if (configs == NULL) {
 931       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 932               __LINE__);
 933       return NULL;
 934    }
 935
 936    return (const __DRIconfig **)configs;
 937 }
 938
 939 struct intel_buffer {
 940    __DRIbuffer base;
 941    struct intel_region *region;
 942 };
 943
 944 /**
 945  * \brief Get tiling format for a DRI buffer.
 946  *
 947  * \param attachment is the buffer's attachmet point, such as
 948  *        __DRI_BUFFER_DEPTH.
 949  * \param out_tiling is the returned tiling format for buffer.
 950  * \return false if attachment is unrecognized or is incompatible with screen.
 951  */
 952 static bool
 953 intel_get_dri_buffer_tiling(struct intel_screen *screen,
 954                             uint32_t attachment,
 955                             uint32_t *out_tiling)
 956 {
 957    if (screen->gen < 4) {
 958       *out_tiling = I915_TILING_X;
 959       return true;
 960    }
 961
 962    switch (attachment) {
 963    case __DRI_BUFFER_DEPTH:
 964    case __DRI_BUFFER_DEPTH_STENCIL:
 965    case __DRI_BUFFER_HIZ:
 966       *out_tiling = I915_TILING_Y;
 967       return true;
 968    case __DRI_BUFFER_ACCUM:
 969    case __DRI_BUFFER_FRONT_LEFT:
 970    case __DRI_BUFFER_FRONT_RIGHT:
 971    case __DRI_BUFFER_BACK_LEFT:
 972    case __DRI_BUFFER_BACK_RIGHT:
 973    case __DRI_BUFFER_FAKE_FRONT_LEFT:
 974    case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 975       *out_tiling = I915_TILING_X;
 976       return true;
 977    case __DRI_BUFFER_STENCIL:
 978       /* The stencil buffer is W tiled. However, we request from the kernel
 979        * a non-tiled buffer because the GTT is incapable of W fencing.
 980        */
 981       *out_tiling = I915_TILING_NONE;
 982       return true;
 983    default:
 984       if(unlikely(INTEL_DEBUG & DEBUG_DRI)) {
 985          fprintf(stderr, "error: %s: unrecognized DRI buffer attachment 0x%x\n",
 986                  __FUNCTION__, attachment);
 987       }
 988        return false;
 989    }
 990 }
 991
 992 static __DRIbuffer *
 993 intelAllocateBuffer(__DRIscreen *screen,
 994                     unsigned attachment, unsigned format,
 995                     int width, int height)
 996 {
 997    struct intel_buffer *intelBuffer;
 998    struct intel_screen *intelScreen = screen->driverPrivate;
 999
1000    uint32_t tiling;
1001    uint32_t region_width;
1002    uint32_t region_height;
1003    uint32_t region_cpp;
1004
1005    bool ok = true;
1006
1007    ok = intel_get_dri_buffer_tiling(intelScreen, attachment, &tiling);
1008    if (!ok)
1009       return NULL;
1010
1011    intelBuffer = CALLOC(sizeof *intelBuffer);
1012    if (intelBuffer == NULL)
1013       return NULL;
1014
1015    if (attachment == __DRI_BUFFER_STENCIL) {
1016       /* Stencil buffers use W tiling, a tiling format that the DRM functions
1017        * don't properly account for.  Therefore, when we allocate a stencil
1018        * buffer that is private to Mesa (see intel_miptree_create), we round
1019        * the height and width up to the next multiple of the tile size (64x64)
1020        * and then ask DRM to allocate an untiled buffer.  Consequently, the
1021        * height and the width stored in the stencil buffer's region structure
1022        * are always multiples of 64, even if the stencil buffer itself is
1023        * smaller.
1024        *
1025        * To avoid inconsistencies between how we represent private buffers and
1026        * buffers shared with the window system, round up the height and width
1027        * for window system buffers too.
1028        */
1029       region_width = ALIGN(width, 64);
1030       region_height = ALIGN(height, 64);
1031    } else {
1032       region_width = width;
1033       region_height = height;
1034    }
1035
1036    region_cpp = format / 8;
1037
1038    intelBuffer->region = intel_region_alloc(intelScreen,
1039                                             tiling,
1040                                             region_cpp,
1041                                             region_width,
1042                                             region_height,
1043                                             true);
1044
1045    if (intelBuffer->region == NULL) {
1046            FREE(intelBuffer);
1047            return NULL;
1048    }
1049
1050    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1051
1052    intelBuffer->base.attachment = attachment;
1053    intelBuffer->base.cpp = intelBuffer->region->cpp;
1054    intelBuffer->base.pitch =
1055          intelBuffer->region->pitch * intelBuffer->region->cpp;
1056
1057    return &intelBuffer->base;
1058 }
1059
1060 static void
1061 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1062 {
1063    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1064
1065    intel_region_release(&intelBuffer->region);
1066    free(intelBuffer);
1067 }
1068
1069
1070 const struct __DriverAPIRec driDriverAPI = {
1071    .InitScreen           = intelInitScreen2,
1072    .DestroyScreen        = intelDestroyScreen,
1073    .CreateContext        = intelCreateContext,
1074    .DestroyContext       = intelDestroyContext,
1075    .CreateBuffer         = intelCreateBuffer,
1076    .DestroyBuffer        = intelDestroyBuffer,
1077    .MakeCurrent          = intelMakeCurrent,
1078    .UnbindContext        = intelUnbindContext,
1079    .AllocateBuffer       = intelAllocateBuffer,
1080    .ReleaseBuffer        = intelReleaseBuffer
1081 };
1082
1083 /* This is the table of extensions that the loader will dlsym() for. */
1084 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1085     &driCoreExtension.base,
1086     &driDRI2Extension.base,
1087     NULL
1088 };