-#define SPAN_CACHE_SIZE 4096
-
-static void
-get_span_cache(struct intel_renderbuffer *irb, uint32_t offset)
-{
- if (irb->span_cache == NULL) {
- irb->span_cache = _mesa_malloc(SPAN_CACHE_SIZE);
- irb->span_cache_offset = -1;
- }
-
- if ((offset & ~(SPAN_CACHE_SIZE - 1)) != irb->span_cache_offset) {
- irb->span_cache_offset = offset & ~(SPAN_CACHE_SIZE - 1);
- dri_bo_get_subdata(irb->region->buffer, irb->span_cache_offset,
- SPAN_CACHE_SIZE, irb->span_cache);
- }
-}
-
-static void
-clear_span_cache(struct intel_renderbuffer *irb)
-{
- irb->span_cache_offset = -1;
-}
-
-static uint32_t
-pread_32(struct intel_renderbuffer *irb, uint32_t offset)
-{
- get_span_cache(irb, offset);
-
- return *(uint32_t *)(irb->span_cache + (offset & (SPAN_CACHE_SIZE - 1)));
-}
-
-static uint32_t
-pread_xrgb8888(struct intel_renderbuffer *irb, uint32_t offset)
-{
- get_span_cache(irb, offset);
-
- return *(uint32_t *)(irb->span_cache + (offset & (SPAN_CACHE_SIZE - 1))) |
- 0xff000000;
-}
-
-static uint16_t
-pread_16(struct intel_renderbuffer *irb, uint32_t offset)
-{
- get_span_cache(irb, offset);
-
- return *(uint16_t *)(irb->span_cache + (offset & (SPAN_CACHE_SIZE - 1)));
-}
-
-static uint8_t
-pread_8(struct intel_renderbuffer *irb, uint32_t offset)
-{
- get_span_cache(irb, offset);
-
- return *(uint8_t *)(irb->span_cache + (offset & (SPAN_CACHE_SIZE - 1)));
-}
-
-static void
-pwrite_32(struct intel_renderbuffer *irb, uint32_t offset, uint32_t val)
-{
- clear_span_cache(irb);
-
- dri_bo_subdata(irb->region->buffer, offset, 4, &val);
-}
-
-static void
-pwrite_xrgb8888(struct intel_renderbuffer *irb, uint32_t offset, uint32_t val)
-{
- clear_span_cache(irb);
-
- dri_bo_subdata(irb->region->buffer, offset, 3, &val);
-}
-
-static void
-pwrite_16(struct intel_renderbuffer *irb, uint32_t offset, uint16_t val)
-{
- clear_span_cache(irb);
-
- dri_bo_subdata(irb->region->buffer, offset, 2, &val);
-}
-
-static void
-pwrite_8(struct intel_renderbuffer *irb, uint32_t offset, uint8_t val)
-{
- clear_span_cache(irb);
-
- dri_bo_subdata(irb->region->buffer, offset, 1, &val);
-}
-
-static uint32_t no_tile_swizzle(struct intel_renderbuffer *irb,
- int x, int y)
-{
- return (y * irb->region->pitch + x) * irb->region->cpp;
-}
-
-/*
- * Deal with tiled surfaces
- */
-
-static uint32_t x_tile_swizzle(struct intel_renderbuffer *irb,
- int x, int y)
-{
- int tile_stride;
- int xbyte;
- int x_tile_off, y_tile_off;
- int x_tile_number, y_tile_number;
- int tile_off, tile_base;
-
- x += irb->region->draw_x;
- y += irb->region->draw_y;
-
- tile_stride = (irb->region->pitch * irb->region->cpp) << 3;
-
- xbyte = x * irb->region->cpp;
-
- x_tile_off = xbyte & 0x1ff;
- y_tile_off = y & 7;
-
- x_tile_number = xbyte >> 9;
- y_tile_number = y >> 3;
-
- tile_off = (y_tile_off << 9) + x_tile_off;
-
- switch (irb->region->bit_6_swizzle) {
- case I915_BIT_6_SWIZZLE_NONE:
- break;
- case I915_BIT_6_SWIZZLE_9:
- tile_off ^= ((tile_off >> 3) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_10:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 4) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_11:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 5) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_10_11:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 4) & 64) ^
- ((tile_off >> 5) & 64);
- break;
- default:
- fprintf(stderr, "Unknown tile swizzling mode %d\n",
- irb->region->bit_6_swizzle);
- exit(1);
- }
-
- tile_base = (x_tile_number << 12) + y_tile_number * tile_stride;
-
-#if 0
- printf("(%d,%d) -> %d + %d = %d (pitch = %d, tstride = %d)\n",
- x, y, tile_off, tile_base,
- tile_off + tile_base,
- irb->region->pitch, tile_stride);
-#endif
-
- return tile_base + tile_off;
-}
-
-static uint32_t y_tile_swizzle(struct intel_renderbuffer *irb,
- int x, int y)
-{
- int tile_stride;
- int xbyte;
- int x_tile_off, y_tile_off;
- int x_tile_number, y_tile_number;
- int tile_off, tile_base;
-
- x += irb->region->draw_x;
- y += irb->region->draw_y;
-
- tile_stride = (irb->region->pitch * irb->region->cpp) << 5;
-
- xbyte = x * irb->region->cpp;
-
- x_tile_off = xbyte & 0x7f;
- y_tile_off = y & 0x1f;
-
- x_tile_number = xbyte >> 7;
- y_tile_number = y >> 5;
-
- tile_off = ((x_tile_off & ~0xf) << 5) + (y_tile_off << 4) +
- (x_tile_off & 0xf);
-
- switch (irb->region->bit_6_swizzle) {
- case I915_BIT_6_SWIZZLE_NONE:
- break;
- case I915_BIT_6_SWIZZLE_9:
- tile_off ^= ((tile_off >> 3) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_10:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 4) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_11:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 5) & 64);
- break;
- case I915_BIT_6_SWIZZLE_9_10_11:
- tile_off ^= ((tile_off >> 3) & 64) ^ ((tile_off >> 4) & 64) ^
- ((tile_off >> 5) & 64);
- break;
- default:
- fprintf(stderr, "Unknown tile swizzling mode %d\n",
- irb->region->bit_6_swizzle);
- exit(1);
- }
-
- tile_base = (x_tile_number << 12) + y_tile_number * tile_stride;
-
- return tile_base + tile_off;
-}
-
-/*
- break intelWriteRGBASpan_ARGB8888
-*/
-