C++ Elements函數代碼示例

void vbo_exec_vtx_init( struct vbo_exec_context *exec )
{
   struct gl_context *ctx = exec->ctx;
   struct vbo_context *vbo = vbo_context(ctx);
   GLuint i;

   /* Allocate a buffer object.  Will just reuse this object
    * continuously, unless vbo_use_buffer_objects() is called to enable
    * use of real VBOs.
    */
   _mesa_reference_buffer_object(ctx,
                                 &exec->vtx.bufferobj,
                                 ctx->Shared->NullBufferObj);

   ASSERT(!exec->vtx.buffer_map);
   exec->vtx.buffer_map = _mesa_align_malloc(VBO_VERT_BUFFER_SIZE, 64);
   exec->vtx.buffer_ptr = exec->vtx.buffer_map;

   vbo_exec_vtxfmt_init( exec );
   _mesa_noop_vtxfmt_init(&exec->vtxfmt_noop);

   for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
      ASSERT(i < Elements(exec->vtx.attrsz));
      exec->vtx.attrsz[i] = 0;
      ASSERT(i < Elements(exec->vtx.attrtype));
      exec->vtx.attrtype[i] = GL_FLOAT;
      ASSERT(i < Elements(exec->vtx.active_sz));
      exec->vtx.active_sz[i] = 0;
   }
   for (i = 0 ; i < VERT_ATTRIB_MAX; i++) {
      ASSERT(i < Elements(exec->vtx.inputs));
      ASSERT(i < Elements(exec->vtx.arrays));
      exec->vtx.inputs[i] = &exec->vtx.arrays[i];
   }
   
   {
      struct gl_client_array *arrays = exec->vtx.arrays;
      unsigned i;

      memcpy(arrays, &vbo->currval[VBO_ATTRIB_POS],
             VERT_ATTRIB_FF_MAX * sizeof(arrays[0]));
      for (i = 0; i < VERT_ATTRIB_FF_MAX; ++i) {
         struct gl_client_array *array;
         array = &arrays[VERT_ATTRIB_FF(i)];
         array->BufferObj = NULL;
         _mesa_reference_buffer_object(ctx, &array->BufferObj,
                                 vbo->currval[VBO_ATTRIB_POS+i].BufferObj);
      }

      memcpy(arrays + VERT_ATTRIB_GENERIC(0),
             &vbo->currval[VBO_ATTRIB_GENERIC0],
             VERT_ATTRIB_GENERIC_MAX * sizeof(arrays[0]));

      for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; ++i) {
         struct gl_client_array *array;
         array = &arrays[VERT_ATTRIB_GENERIC(i)];
         array->BufferObj = NULL;
         _mesa_reference_buffer_object(ctx, &array->BufferObj,
                           vbo->currval[VBO_ATTRIB_GENERIC0+i].BufferObj);
      }
   }

   exec->vtx.vertex_size = 0;

   exec->begin_vertices_flags = FLUSH_UPDATE_CURRENT;
}

static HRESULT WINAPI
drm_create_adapter( int fd,
                    ID3DAdapter9 **ppAdapter )
{
    struct d3dadapter9drm_context *ctx = CALLOC_STRUCT(d3dadapter9drm_context);
    HRESULT hr;
    int i, different_device;
    
    const char *paths[] = {
        getenv("D3D9_DRIVERS_PATH"),
        getenv("D3D9_DRIVERS_DIR"),
        PIPE_SEARCH_DIR
    };
    
    if (!ctx) { return E_OUTOFMEMORY; }

    ctx->base.destroy = drm_destroy;

    fd = loader_get_user_preferred_fd(fd, &different_device);
    ctx->base.linear_framebuffer = !!different_device;

    /* use pipe-loader to dlopen appropriate drm driver */
    if (!pipe_loader_drm_probe_fd(&ctx->dev, fd, FALSE)) {
        DBG("Failed to probe drm fd %d.\n", fd);
        FREE(ctx);
        close(fd);
        return D3DERR_DRIVERINTERNALERROR;
    }

    /* use pipe-loader to create a drm screen (hal) */
    ctx->base.hal = NULL;
    for (i = 0; !ctx->base.hal && i < Elements(paths); ++i) {
        if (!paths[i]) { continue; }
        ctx->base.hal = pipe_loader_create_screen(ctx->dev, paths[i]);
    }
    if (!ctx->base.hal) {
        DBG("Unable to load requested driver.\n");
        pipe_loader_release(&ctx->dev, 1);
        FREE(ctx);
        return D3DERR_DRIVERINTERNALERROR;
    }
    
    /* wrap it to create a software screen that can share resources */
    if (pipe_loader_sw_probe_wrapped(&ctx->swdev, ctx->base.hal)) {
        ctx->base.ref = NULL;
        for (i = 0; !ctx->base.ref && i < Elements(paths); ++i) {
            if (!paths[i]) { continue; }
            ctx->base.ref = pipe_loader_create_screen(ctx->swdev, paths[i]);
        }
    }
    if (!ctx->base.ref) {
        DBG("Couldn't wrap drm screen to swrast screen. Software devices "
            "will be unavailable.\n");
    }
    
    /* read out PCI info */
    read_descriptor(&ctx->base, fd);

    /* create and return new ID3DAdapter9 */
    hr = NineAdapter9_new(&ctx->base, (struct NineAdapter9 **)ppAdapter);
    if (FAILED(hr)) {
        if (ctx->swdev) { pipe_loader_release(&ctx->swdev, 1); }
        pipe_loader_release(&ctx->dev, 1);
        FREE(ctx);
        return hr;
    }
    
    return D3D_OK;
}

//.........這裏部分代碼省略.........
      "vertex.texcoord[2]",
      "vertex.texcoord[3]",
      "vertex.texcoord[4]",
      "vertex.texcoord[5]",
      "vertex.texcoord[6]",
      "vertex.texcoord[7]",
      "vertex.(sixteen)", /* VERT_ATTRIB_POINT_SIZE */
      "vertex.attrib[0]",
      "vertex.attrib[1]",
      "vertex.attrib[2]",
      "vertex.attrib[3]",
      "vertex.attrib[4]",
      "vertex.attrib[5]",
      "vertex.attrib[6]",
      "vertex.attrib[7]",
      "vertex.attrib[8]",
      "vertex.attrib[9]",
      "vertex.attrib[10]",
      "vertex.attrib[11]",
      "vertex.attrib[12]",
      "vertex.attrib[13]",
      "vertex.attrib[14]",
      "vertex.attrib[15]" /* MAX_VARYING = 16 */
   };
   static const char *const fragAttribs[] = {
      "fragment.position",
      "fragment.color.primary",
      "fragment.color.secondary",
      "fragment.fogcoord",
      "fragment.texcoord[0]",
      "fragment.texcoord[1]",
      "fragment.texcoord[2]",
      "fragment.texcoord[3]",
      "fragment.texcoord[4]",
      "fragment.texcoord[5]",
      "fragment.texcoord[6]",
      "fragment.texcoord[7]",
      "fragment.(twelve)", /* VARYING_SLOT_PSIZ */
      "fragment.(thirteen)", /* VARYING_SLOT_BFC0 */
      "fragment.(fourteen)", /* VARYING_SLOT_BFC1 */
      "fragment.(fifteen)", /* VARYING_SLOT_EDGE */
      "fragment.(sixteen)", /* VARYING_SLOT_CLIP_VERTEX */
      "fragment.(seventeen)", /* VARYING_SLOT_CLIP_DIST0 */
      "fragment.(eighteen)", /* VARYING_SLOT_CLIP_DIST1 */
      "fragment.(nineteen)", /* VARYING_SLOT_PRIMITIVE_ID */
      "fragment.(twenty)", /* VARYING_SLOT_LAYER */
      "fragment.(twenty-one)", /* VARYING_SLOT_FACE */
      "fragment.(twenty-two)", /* VARYING_SLOT_PNTC */
      "fragment.varying[0]",
      "fragment.varying[1]",
      "fragment.varying[2]",
      "fragment.varying[3]",
      "fragment.varying[4]",
      "fragment.varying[5]",
      "fragment.varying[6]",
      "fragment.varying[7]",
      "fragment.varying[8]",
      "fragment.varying[9]",
      "fragment.varying[10]",
      "fragment.varying[11]",
      "fragment.varying[12]",
      "fragment.varying[13]",
      "fragment.varying[14]",
      "fragment.varying[15]",
      "fragment.varying[16]",
      "fragment.varying[17]",
      "fragment.varying[18]",
      "fragment.varying[19]",
      "fragment.varying[20]",
      "fragment.varying[21]",
      "fragment.varying[22]",
      "fragment.varying[23]",
      "fragment.varying[24]",
      "fragment.varying[25]",
      "fragment.varying[26]",
      "fragment.varying[27]",
      "fragment.varying[28]",
      "fragment.varying[29]",
      "fragment.varying[30]",
      "fragment.varying[31]", /* MAX_VARYING = 32 */
   };

   /* sanity checks */
   STATIC_ASSERT(Elements(vertAttribs) == VERT_ATTRIB_MAX);
   STATIC_ASSERT(Elements(fragAttribs) == VARYING_SLOT_MAX);
   assert(strcmp(vertAttribs[VERT_ATTRIB_TEX0], "vertex.texcoord[0]") == 0);
   assert(strcmp(vertAttribs[VERT_ATTRIB_GENERIC15], "vertex.attrib[15]") == 0);
   assert(strcmp(fragAttribs[VARYING_SLOT_TEX0], "fragment.texcoord[0]") == 0);
   assert(strcmp(fragAttribs[VARYING_SLOT_VAR0+15], "fragment.varying[15]") == 0);

   if (progType == GL_VERTEX_PROGRAM_ARB) {
      assert(index < Elements(vertAttribs));
      return vertAttribs[index];
   }
   else {
      assert(progType == GL_FRAGMENT_PROGRAM_ARB);
      assert(index < Elements(fragAttribs));
      return fragAttribs[index];
   }
}

static struct st_context *
st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
		const struct st_config_options *options)
{
   struct pipe_screen *screen = pipe->screen;
   uint i;
   struct st_context *st = ST_CALLOC_STRUCT( st_context );
   
   st->options = *options;

   ctx->st = st;

   st->ctx = ctx;
   st->pipe = pipe;

   /* XXX: this is one-off, per-screen init: */
   st_debug_init();
   
   /* state tracker needs the VBO module */
   _vbo_CreateContext(ctx);

   st->dirty.mesa = ~0;
   st->dirty.st = ~0;

   /* Create upload manager for vertex data for glBitmap, glDrawPixels,
    * glClear, etc.
    */
   st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);

   if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
      st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
                                              PIPE_BIND_INDEX_BUFFER);
   }

   if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
      unsigned alignment =
         screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);

      st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
                                              PIPE_BIND_CONSTANT_BUFFER);
   }

   st->cso_context = cso_create_context(pipe);

   st_init_atoms( st );
   st_init_bitmap(st);
   st_init_clear(st);
   st_init_draw( st );

   /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
   if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
      st->internal_target = PIPE_TEXTURE_2D;
   else
      st->internal_target = PIPE_TEXTURE_RECT;

   /* Vertex element objects used for drawing rectangles for glBitmap,
    * glDrawPixels, glClear, etc.
    */
   for (i = 0; i < Elements(st->velems_util_draw); i++) {
      memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
      st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
      st->velems_util_draw[i].instance_divisor = 0;
      st->velems_util_draw[i].vertex_buffer_index =
            cso_get_aux_vertex_buffer_slot(st->cso_context);
      st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
   }

   /* we want all vertex data to be placed in buffer objects */
   vbo_use_buffer_objects(ctx);


   /* make sure that no VBOs are left mapped when we're drawing. */
   vbo_always_unmap_buffers(ctx);

   /* Need these flags:
    */
   st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;

   st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;

   st->pixel_xfer.cache = _mesa_new_program_cache();

   st->has_stencil_export =
      screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
   st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
   st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
                                              PIPE_TEXTURE_2D, 0,
                                              PIPE_BIND_SAMPLER_VIEW);
   st->prefer_blit_based_texture_transfer = screen->get_param(screen,
                              PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);

   st->needs_texcoord_semantic =
      screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
   st->apply_texture_swizzle_to_border_color =
      !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
         (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
          PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
   st->has_time_elapsed =
      screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);

//.........這裏部分代碼省略.........

NS_IMETHODIMP
HTMLFieldSetElement::GetElements(nsIDOMHTMLCollection** aElements)
{
  NS_ADDREF(*aElements = Elements());
  return NS_OK;
}

static boolean parse_declaration( struct translate_ctx *ctx )
{
   struct tgsi_full_declaration decl;
   uint file;
   struct parsed_dcl_bracket brackets[2];
   int num_brackets;
   uint writemask;
   const char *cur;
   uint advance;
   boolean is_vs_input;
   boolean is_imm_array;

   assert(Elements(semantic_names) == TGSI_SEMANTIC_COUNT);
   assert(Elements(interpolate_names) == TGSI_INTERPOLATE_COUNT);

   if (!eat_white( &ctx->cur )) {
      report_error( ctx, "Syntax error" );
      return FALSE;
   }
   if (!parse_register_dcl( ctx, &file, brackets, &num_brackets))
      return FALSE;
   if (!parse_opt_writemask( ctx, &writemask ))
      return FALSE;

   decl = tgsi_default_full_declaration();
   decl.Declaration.File = file;
   decl.Declaration.UsageMask = writemask;

   if (num_brackets == 1) {
      decl.Range.First = brackets[0].first;
      decl.Range.Last = brackets[0].last;
   } else {
      decl.Range.First = brackets[1].first;
      decl.Range.Last = brackets[1].last;

      decl.Declaration.Dimension = 1;
      decl.Dim.Index2D = brackets[0].first;
   }

   is_vs_input = (file == TGSI_FILE_INPUT &&
                  ctx->processor == TGSI_PROCESSOR_VERTEX);
   is_imm_array = (file == TGSI_FILE_IMMEDIATE_ARRAY);

   cur = ctx->cur;
   eat_opt_white( &cur );
   if (*cur == ',' && !is_vs_input) {
      uint i, j;

      cur++;
      eat_opt_white( &cur );
      if (file == TGSI_FILE_RESOURCE) {
         for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
            if (str_match_no_case(&cur, texture_names[i])) {
               if (!is_digit_alpha_underscore(cur)) {
                  decl.Resource.Resource = i;
                  break;
               }
            }
         }
         if (i == TGSI_TEXTURE_COUNT) {
            report_error(ctx, "Expected texture target");
            return FALSE;
         }
         eat_opt_white( &cur );
         if (*cur != ',') {
            report_error( ctx, "Expected `,'" );
            return FALSE;
         }
         ++cur;
         eat_opt_white( &cur );
         for (j = 0; j < 4; ++j) {
            for (i = 0; i < PIPE_TYPE_COUNT; ++i) {
               if (str_match_no_case(&cur, type_names[i])) {
                  if (!is_digit_alpha_underscore(cur)) {
                     switch (j) {
                     case 0:
                        decl.Resource.ReturnTypeX = i;
                        break;
                     case 1:
                        decl.Resource.ReturnTypeY = i;
                        break;
                     case 2:
                        decl.Resource.ReturnTypeZ = i;
                        break;
                     case 3:
                        decl.Resource.ReturnTypeW = i;
                        break;
                     default:
                        assert(0);
                     }
                     break;
                  }
               }
            }
            if (i == PIPE_TYPE_COUNT) {
               if (j == 0 || j >  2) {
                  report_error(ctx, "Expected type name");
                  return FALSE;
               }
               break;
//.........這裏部分代碼省略.........

//.........這裏部分代碼省略.........
    bisectdim = region->result[maxcomp].bisectdim;
    bL = &regionL->bounds[bisectdim];
    bR = &regionR->bounds[bisectdim];
    bL->upper = bR->lower = .5*(bL->upper + bL->lower);

    Sample(&rule, regionL, flags);
    Sample(&rule, regionR, flags);

    for( comp = 0; comp < ncomp_; ++comp ) {
      cResult *r = &region->result[comp];
      Result *rL = &regionL->result[comp];
      Result *rR = &regionR->result[comp];
      Totals *tot = &totals[comp];
      real diff, err, w, avg, sigsq;

      tot->lastavg += diff = rL->avg + rR->avg - r->avg;

      diff = fabs(.25*diff);
      err = rL->err + rR->err;
      if( err > 0 ) {
        creal c = 1 + 2*diff/err;
        rL->err *= c;
        rR->err *= c;
      }
      rL->err += diff;
      rR->err += diff;
      tot->lasterr += rL->err + rR->err - r->err;

      tot->weightsum += w = 1/Max(Sq(tot->lasterr), NOTZERO);
      sigsq = 1/tot->weightsum;
      tot->avgsum += w*tot->lastavg;
      avg = sigsq*tot->avgsum;
      tot->chisum += w *= tot->lastavg - tot->guess;
      tot->chisqsum += w*tot->lastavg;
      tot->chisq = tot->chisqsum - avg*tot->chisum;

      if( LAST ) {
        tot->avg = tot->lastavg;
        tot->err = tot->lasterr;
      }
      else {
        tot->avg = avg;
        tot->err = sqrt(sigsq);
      }
    }

    free(region);
    region = NULL;
  }

  for( comp = 0; comp < ncomp_; ++comp ) {
    cTotals *tot = &totals[comp];
    integral[comp] = tot->avg;
    error[comp] = tot->err;
    prob[comp] = ChiSquare(tot->chisq, nregions_ - 1);
  }

#ifdef MLVERSION
  if( REGIONS ) {
    MLPutFunction(stdlink, "List", 2);
    MLPutFunction(stdlink, "List", nregions_);
    for( region = anchor; region; region = region->next ) {
      real lower[NDIM], upper[NDIM];

      for( dim = 0; dim < ndim_; ++dim ) {
        cBounds *b = &region->bounds[dim];
        lower[dim] = b->lower;
        upper[dim] = b->upper;
      }

      MLPutFunction(stdlink, "Cuba`Cuhre`region", 3);
      MLPutRealList(stdlink, lower, ndim_);
      MLPutRealList(stdlink, upper, ndim_);

      MLPutFunction(stdlink, "List", ncomp_);
      for( comp = 0; comp < ncomp_; ++comp ) {
        cResult *r = &region->result[comp];
        real res[] = {r->avg, r->err};
        MLPutRealList(stdlink, res, Elements(res));
      }
    }
  }
#endif

#ifdef MLVERSION
abort:
#endif

  if( region ) free(region);

  while( (region = anchor) ) {
    anchor = anchor->next;
    free(region);
  }

  free(rule.x);
  RuleFree(&rule);

  return fail;
}

//.........這裏部分代碼省略.........
   lp_build_mipmap_level_sizes(bld, ilevel0,
                               &size0,
                               &row_stride0_vec, &img_stride0_vec);
   data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
   if (img_filter == PIPE_TEX_FILTER_NEAREST) {
      lp_build_sample_image_nearest(bld,
                                    size0,
                                    row_stride0_vec, img_stride0_vec,
                                    data_ptr0, s, t, r,
                                    &colors0_lo, &colors0_hi);
   }
   else {
      assert(img_filter == PIPE_TEX_FILTER_LINEAR);
      lp_build_sample_image_linear(bld,
                                   size0,
                                   row_stride0_vec, img_stride0_vec,
                                   data_ptr0, s, t, r,
                                   &colors0_lo, &colors0_hi);
   }

   /* Store the first level's colors in the output variables */
   LLVMBuildStore(builder, colors0_lo, colors_lo_var);
   LLVMBuildStore(builder, colors0_hi, colors_hi_var);

   if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
      LLVMValueRef h16_scale = lp_build_const_float(bld->gallivm, 256.0);
      LLVMTypeRef i32_type = LLVMIntTypeInContext(bld->gallivm->context, 32);
      struct lp_build_if_state if_ctx;
      LLVMValueRef need_lerp;

      lod_fpart = LLVMBuildFMul(builder, lod_fpart, h16_scale, "");
      lod_fpart = LLVMBuildFPToSI(builder, lod_fpart, i32_type, "lod_fpart.fixed16");

      /* need_lerp = lod_fpart > 0 */
      need_lerp = LLVMBuildICmp(builder, LLVMIntSGT,
                                lod_fpart, LLVMConstNull(i32_type),
                                "need_lerp");

      lp_build_if(&if_ctx, bld->gallivm, need_lerp);
      {
         struct lp_build_context h16_bld;

         lp_build_context_init(&h16_bld, bld->gallivm, lp_type_ufixed(16));

         /* sample the second mipmap level */
         lp_build_mipmap_level_sizes(bld, ilevel1,
                                     &size1,
                                     &row_stride1_vec, &img_stride1_vec);
         data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
         if (img_filter == PIPE_TEX_FILTER_NEAREST) {
            lp_build_sample_image_nearest(bld,
                                          size1,
                                          row_stride1_vec, img_stride1_vec,
                                          data_ptr1, s, t, r,
                                          &colors1_lo, &colors1_hi);
         }
         else {
            lp_build_sample_image_linear(bld,
                                         size1,
                                         row_stride1_vec, img_stride1_vec,
                                         data_ptr1, s, t, r,
                                         &colors1_lo, &colors1_hi);
         }

         /* interpolate samples from the two mipmap levels */

         lod_fpart = LLVMBuildTrunc(builder, lod_fpart, h16_bld.elem_type, "");
         lod_fpart = lp_build_broadcast_scalar(&h16_bld, lod_fpart);

#if HAVE_LLVM == 0x208
         /* This is a work-around for a bug in LLVM 2.8.
          * Evidently, something goes wrong in the construction of the
          * lod_fpart short[8] vector.  Adding this no-effect shuffle seems
          * to force the vector to be properly constructed.
          * Tested with mesa-demos/src/tests/mipmap_limits.c (press t, f).
          */
         {
            LLVMValueRef shuffles[8], shuffle;
            int i;
            assert(h16_bld.type.length <= Elements(shuffles));
            for (i = 0; i < h16_bld.type.length; i++)
               shuffles[i] = lp_build_const_int32(bld->gallivm, 2 * (i & 1));
            shuffle = LLVMConstVector(shuffles, h16_bld.type.length);
            lod_fpart = LLVMBuildShuffleVector(builder,
                                               lod_fpart, lod_fpart,
                                               shuffle, "");
         }
#endif

         colors0_lo = lp_build_lerp(&h16_bld, lod_fpart,
                                    colors0_lo, colors1_lo);
         colors0_hi = lp_build_lerp(&h16_bld, lod_fpart,
                                    colors0_hi, colors1_hi);

         LLVMBuildStore(builder, colors0_lo, colors_lo_var);
         LLVMBuildStore(builder, colors0_hi, colors_hi_var);
      }
      lp_build_endif(&if_ctx);
   }
}

JSObject*
CryptoBuffer::ToUint8Array(JSContext* aCx) const
{
  return Uint8Array::Create(aCx, Length(), Elements());
}

/**
 * Handle state changes.
 * Called just prior to drawing anything (pipe::draw_arrays(), etc).
 *
 * Hopefully this will remain quite simple, otherwise need to pull in
 * something like the state tracker mechanism.
 */
void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
{
   struct llvmpipe_screen *lp_screen = llvmpipe_screen(llvmpipe->pipe.screen);

   /* Check for updated textures.
    */
   if (llvmpipe->tex_timestamp != lp_screen->timestamp) {
      llvmpipe->tex_timestamp = lp_screen->timestamp;
      llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
   }
      
   if (llvmpipe->dirty & (LP_NEW_RASTERIZER |
                          LP_NEW_FS |
                          LP_NEW_VS))
      compute_vertex_info( llvmpipe );

   if (llvmpipe->dirty & (LP_NEW_FS |
                          LP_NEW_FRAMEBUFFER |
                          LP_NEW_BLEND |
                          LP_NEW_SCISSOR |
                          LP_NEW_DEPTH_STENCIL_ALPHA |
                          LP_NEW_RASTERIZER |
                          LP_NEW_SAMPLER |
                          LP_NEW_SAMPLER_VIEW |
                          LP_NEW_OCCLUSION_QUERY))
      llvmpipe_update_fs( llvmpipe );

   if (llvmpipe->dirty & (LP_NEW_FS |
			  LP_NEW_RASTERIZER))
      llvmpipe_update_setup( llvmpipe );

   if (llvmpipe->dirty & LP_NEW_BLEND_COLOR)
      lp_setup_set_blend_color(llvmpipe->setup,
                               &llvmpipe->blend_color);

   if (llvmpipe->dirty & LP_NEW_SCISSOR)
      lp_setup_set_scissors(llvmpipe->setup, llvmpipe->scissors);

   if (llvmpipe->dirty & LP_NEW_DEPTH_STENCIL_ALPHA) {
      lp_setup_set_alpha_ref_value(llvmpipe->setup, 
                                   llvmpipe->depth_stencil->alpha.ref_value);
      lp_setup_set_stencil_ref_values(llvmpipe->setup,
                                      llvmpipe->stencil_ref.ref_value);
   }

   if (llvmpipe->dirty & LP_NEW_CONSTANTS)
      lp_setup_set_fs_constants(llvmpipe->setup,
                                Elements(llvmpipe->constants[PIPE_SHADER_FRAGMENT]),
                                llvmpipe->constants[PIPE_SHADER_FRAGMENT]);

   if (llvmpipe->dirty & (LP_NEW_SAMPLER_VIEW))
      lp_setup_set_fragment_sampler_views(llvmpipe->setup,
                                          llvmpipe->num_sampler_views[PIPE_SHADER_FRAGMENT],
                                          llvmpipe->sampler_views[PIPE_SHADER_FRAGMENT]);

   if (llvmpipe->dirty & (LP_NEW_SAMPLER))
      lp_setup_set_fragment_sampler_state(llvmpipe->setup,
                                          llvmpipe->num_samplers[PIPE_SHADER_FRAGMENT],
                                          llvmpipe->samplers[PIPE_SHADER_FRAGMENT]);

   llvmpipe->dirty = 0;
}

//.........這裏部分代碼省略.........
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_CLIPDIST;
            gs_output_semantic_index[slot] = 0;
            break;
         case VARYING_SLOT_CLIP_DIST1:
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_CLIPDIST;
            gs_output_semantic_index[slot] = 1;
            break;
         case VARYING_SLOT_LAYER:
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_LAYER;
            gs_output_semantic_index[slot] = 0;
            break;
         case VARYING_SLOT_PRIMITIVE_ID:
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_PRIMID;
            gs_output_semantic_index[slot] = 0;
            break;
         case VARYING_SLOT_VIEWPORT:
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_VIEWPORT_INDEX;
            gs_output_semantic_index[slot] = 0;
            break;
         case VARYING_SLOT_TEX0:
         case VARYING_SLOT_TEX1:
         case VARYING_SLOT_TEX2:
         case VARYING_SLOT_TEX3:
         case VARYING_SLOT_TEX4:
         case VARYING_SLOT_TEX5:
         case VARYING_SLOT_TEX6:
         case VARYING_SLOT_TEX7:
            gs_output_semantic_name[slot] = st->needs_texcoord_semantic ?
               TGSI_SEMANTIC_TEXCOORD : TGSI_SEMANTIC_GENERIC;
            gs_output_semantic_index[slot] = (attr - VARYING_SLOT_TEX0);
            break;
         case VARYING_SLOT_VAR0:
         default:
            assert(slot < Elements(gs_output_semantic_name));
            assert(attr >= VARYING_SLOT_VAR0);
            gs_output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
            gs_output_semantic_index[slot] = st->needs_texcoord_semantic ?
               (attr - VARYING_SLOT_VAR0) : (attr - VARYING_SLOT_TEX0);
         break;
         }
      }
   }

   /* find max output slot referenced to compute gs_num_outputs */
   for (attr = 0; attr < VARYING_SLOT_MAX; attr++) {
      if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)
         maxSlot = outputMapping[attr];
   }
   gs_num_outputs = maxSlot + 1;

#if 0 /* debug */
   {
      GLuint i;
      printf("outputMapping? %d\n", outputMapping ? 1 : 0);
      if (outputMapping) {
         printf("attr -> slot\n");
         for (i = 0; i < 16;  i++) {
            printf(" %2d       %3d\n", i, outputMapping[i]);
         }
      }
      printf("slot    sem_name  sem_index\n");
      for (i = 0; i < gs_num_outputs; i++) {
         printf(" %2d         %d         %d\n",
                i,
                gs_output_semantic_name[i],
                gs_output_semantic_index[i]);

#include "piglit-framework.h"
#include "piglit-util.h"
#include "rg-teximage-common.h"

#define WIDTH  256
#define HEIGHT 256
static float rgba_image[4 * WIDTH * HEIGHT];

static const GLenum internal_formats[] = {
	GL_COMPRESSED_RG_RGTC2,
	GL_COMPRESSED_SIGNED_RG_RGTC2,
	GL_RG,
	GL_RGBA,
};

GLuint tex[Elements(internal_formats)];
const unsigned num_tex = Elements(tex);
GLboolean pass = GL_TRUE;

int piglit_width = WIDTH * Elements(tex);
int piglit_height = HEIGHT;
int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;

void
piglit_init(int argc, char **argv)
{
	unsigned i;
	GLfloat result[4 * WIDTH * HEIGHT];

	piglit_require_extension("GL_ARB_texture_compression_rgtc");

/**
 * Emit instructions to move sampling parameters to the message registers.
 */
static int
vs_add_sampler_params(struct toy_compiler *tc, int msg_type, int base_mrf,
                      struct toy_src coords, int num_coords,
                      struct toy_src bias_or_lod, struct toy_src ref_or_si,
                      struct toy_src ddx, struct toy_src ddy, int num_derivs)
{
   const unsigned coords_writemask = (1 << num_coords) - 1;
   struct toy_dst m[3];
   int num_params, i;

   assert(num_coords <= 4);
   assert(num_derivs <= 3 && num_derivs <= num_coords);

   for (i = 0; i < Elements(m); i++)
      m[i] = tdst(TOY_FILE_MRF, base_mrf + i, 0);

   switch (msg_type) {
   case GEN6_MSG_SAMPLER_SAMPLE_L:
      tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
      tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_X), bias_or_lod);
      num_params = 5;
      break;
   case GEN6_MSG_SAMPLER_SAMPLE_D:
      tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
      tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_XZ),
            tsrc_swizzle(ddx, 0, 0, 1, 1));
      tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_YW),
            tsrc_swizzle(ddy, 0, 0, 1, 1));
      if (num_derivs > 2) {
         tc_MOV(tc, tdst_writemask(m[2], TOY_WRITEMASK_X),
               tsrc_swizzle1(ddx, 2));
         tc_MOV(tc, tdst_writemask(m[2], TOY_WRITEMASK_Y),
               tsrc_swizzle1(ddy, 2));
      }
      num_params = 4 + num_derivs * 2;
      break;
   case GEN6_MSG_SAMPLER_SAMPLE_L_C:
      tc_MOV(tc, tdst_writemask(m[0], coords_writemask), coords);
      tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_X), ref_or_si);
      tc_MOV(tc, tdst_writemask(m[1], TOY_WRITEMASK_Y), bias_or_lod);
      num_params = 6;
      break;
   case GEN6_MSG_SAMPLER_LD:
      assert(num_coords <= 3);
      tc_MOV(tc, tdst_writemask(tdst_d(m[0]), coords_writemask), coords);
      tc_MOV(tc, tdst_writemask(tdst_d(m[0]), TOY_WRITEMASK_W), bias_or_lod);
      if (tc->dev->gen >= ILO_GEN(7)) {
         num_params = 4;
      }
      else {
         tc_MOV(tc, tdst_writemask(tdst_d(m[1]), TOY_WRITEMASK_X), ref_or_si);
         num_params = 5;
      }
      break;
   case GEN6_MSG_SAMPLER_RESINFO:
      tc_MOV(tc, tdst_writemask(tdst_d(m[0]), TOY_WRITEMASK_X), bias_or_lod);
      num_params = 1;
      break;
   default:
      tc_fail(tc, "unknown sampler opcode");
      num_params = 0;
      break;
   }

   return (num_params + 3) / 4;
}

static boolean
drm_display_program(struct native_display *ndpy, int crtc_idx,
                    struct native_surface *nsurf, uint x, uint y,
                    const struct native_connector **nconns, int num_nconns,
                    const struct native_mode *nmode)
{
   struct drm_display *drmdpy = drm_display(ndpy);
   struct drm_surface *drmsurf = drm_surface(nsurf);
   const struct drm_mode *drmmode = drm_mode(nmode);
   uint32_t connector_ids[32];
   uint32_t buffer_id;
   drmModeModeInfo mode_tmp, *mode;
   int i;

   if (num_nconns > Elements(connector_ids)) {
      _eglLog(_EGL_WARNING, "too many connectors (%d)", num_nconns);
      num_nconns = Elements(connector_ids);
   }

   if (drmsurf) {
      if (!drm_surface_init_framebuffers(&drmsurf->base, FALSE))
         return FALSE;

      buffer_id = drmsurf->front_fb.buffer_id;
      /* the mode argument of drmModeSetCrtc is not constified */
      mode_tmp = drmmode->mode;
      mode = &mode_tmp;
   }
   else {
      /* disable the CRTC */
      buffer_id = 0;
      mode = NULL;
      num_nconns = 0;
   }

   for (i = 0; i < num_nconns; i++) {
      struct drm_connector *drmconn = drm_connector(nconns[i]);
      connector_ids[i] = drmconn->connector->connector_id;
   }

   if (!drm_display_set_crtc(&drmdpy->base, crtc_idx, buffer_id, x, y,
            connector_ids, num_nconns, mode)) {
      _eglLog(_EGL_WARNING, "failed to set CRTC %d", crtc_idx);

      return FALSE;
   }

   if (drmdpy->shown_surfaces[crtc_idx])
      drmdpy->shown_surfaces[crtc_idx]->is_shown = FALSE;
   drmdpy->shown_surfaces[crtc_idx] = drmsurf;

   /* remember the settings for buffer swapping */
   if (drmsurf) {
      uint32_t crtc_id = drmdpy->saved_crtcs[crtc_idx].crtc->crtc_id;
      struct drm_crtc *drmcrtc = &drmsurf->current_crtc;

      if (drmcrtc->crtc)
         drmModeFreeCrtc(drmcrtc->crtc);
      drmcrtc->crtc = drmModeGetCrtc(drmdpy->fd, crtc_id);

      assert(num_nconns < Elements(drmcrtc->connectors));
      memcpy(drmcrtc->connectors, connector_ids,
            sizeof(*connector_ids) * num_nconns);
      drmcrtc->num_connectors = num_nconns;

      drmsurf->is_shown = TRUE;
   }

   return TRUE;
}

static void transform_inst(struct tgsi_transform_context *ctx,
                           struct tgsi_full_instruction *inst)
{
    struct vs_transform_context *vsctx = (struct vs_transform_context *) ctx;
    struct tgsi_full_instruction new_inst;
    unsigned i;

    if (!vsctx->first_instruction) {
        vsctx->first_instruction = TRUE;

        /* Insert the generic output for WPOS. */
        emit_output(ctx, TGSI_SEMANTIC_GENERIC, vsctx->last_generic + 1,
                    TGSI_INTERPOLATE_PERSPECTIVE, vsctx->num_outputs);

        /* Find a free temp for POSITION. */
        for (i = 0; i < Elements(vsctx->temp_used); i++) {
            if (!vsctx->temp_used[i]) {
                emit_temp(ctx, i);
                vsctx->pos_temp = i;
                break;
            }
        }
    }

    if (inst->Instruction.Opcode == TGSI_OPCODE_END) {
        /* MOV OUT[pos_output], TEMP[pos_temp]; */
        new_inst = tgsi_default_full_instruction();
        new_inst.Instruction.Opcode = TGSI_OPCODE_MOV;
        new_inst.Instruction.NumDstRegs = 1;
        new_inst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
        new_inst.Dst[0].Register.Index = vsctx->pos_output;
        new_inst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XYZW;
        new_inst.Instruction.NumSrcRegs = 1;
        new_inst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
        new_inst.Src[0].Register.Index = vsctx->pos_temp;
        ctx->emit_instruction(ctx, &new_inst);

        /* MOV OUT[n-1], TEMP[pos_temp]; */
        new_inst = tgsi_default_full_instruction();
        new_inst.Instruction.Opcode = TGSI_OPCODE_MOV;
        new_inst.Instruction.NumDstRegs = 1;
        new_inst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
        new_inst.Dst[0].Register.Index = vsctx->num_outputs - 1;
        new_inst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XYZW;
        new_inst.Instruction.NumSrcRegs = 1;
        new_inst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
        new_inst.Src[0].Register.Index = vsctx->pos_temp;
        ctx->emit_instruction(ctx, &new_inst);

        vsctx->end_instruction = TRUE;
    } else {
        /* Not an END instruction. */
        /* Fix writes to outputs. */
        for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
            struct tgsi_full_dst_register *dst = &inst->Dst[i];
            if (dst->Register.File == TGSI_FILE_OUTPUT) {
                if (dst->Register.Index == vsctx->pos_output) {
                    /* Replace writes to OUT[pos_output] with TEMP[pos_temp]. */
                    dst->Register.File = TGSI_FILE_TEMPORARY;
                    dst->Register.Index = vsctx->pos_temp;
                } else {
                    /* Not a position, good...
                     * Since we were changing the indices of output decls,
                     * we must redirect writes into them too. */
                    dst->Register.Index = vsctx->out_remap[dst->Register.Index];
                }
            }
        }

        /* Inserting 2 instructions before the END opcode moves all following
         * labels by 2. Subroutines are always after the END opcode so
         * they're always moved. */
        if (inst->Instruction.Opcode == TGSI_OPCODE_CAL) {
            inst->Label.Label += 2;
        }
        /* The labels of the following opcodes are moved only after
         * the END opcode. */
        if (vsctx->end_instruction &&
            (inst->Instruction.Opcode == TGSI_OPCODE_IF ||
             inst->Instruction.Opcode == TGSI_OPCODE_ELSE ||
             inst->Instruction.Opcode == TGSI_OPCODE_BGNLOOP ||
             inst->Instruction.Opcode == TGSI_OPCODE_ENDLOOP)) {
            inst->Label.Label += 2;
        }
    }

    ctx->emit_instruction(ctx, inst);
}