/************************************************************************** * * Copyright 2006 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /* * Authors: * Keith Whitwell * Michel Dänzer */ #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/p_state.h" #include "util/format/u_format.h" #include "util/u_inlines.h" #include "util/u_math.h" #include "util/u_memory.h" #include "util/u_rect.h" #include "i915_context.h" #include "i915_debug.h" #include "i915_resource.h" #include "i915_screen.h" #include "i915_winsys.h" #define DEBUG_TEXTURES 0 /* * Helper function and arrays */ /** * Initial offset for Cube map. */ static const int initial_offsets[6][2] = { [PIPE_TEX_FACE_POS_X] = {0, 0}, [PIPE_TEX_FACE_POS_Y] = {1, 0}, [PIPE_TEX_FACE_POS_Z] = {1, 1}, [PIPE_TEX_FACE_NEG_X] = {0, 2}, [PIPE_TEX_FACE_NEG_Y] = {1, 2}, [PIPE_TEX_FACE_NEG_Z] = {1, 3}, }; /** * Step offsets for Cube map. */ static const int step_offsets[6][2] = { [PIPE_TEX_FACE_POS_X] = {0, 2}, [PIPE_TEX_FACE_POS_Y] = {-1, 2}, [PIPE_TEX_FACE_POS_Z] = {-1, 1}, [PIPE_TEX_FACE_NEG_X] = {0, 2}, [PIPE_TEX_FACE_NEG_Y] = {-1, 2}, [PIPE_TEX_FACE_NEG_Z] = {-1, 1}, }; /** * For compressed level 2 */ static const int bottom_offsets[6] = { [PIPE_TEX_FACE_POS_X] = 16 + 0 * 8, [PIPE_TEX_FACE_POS_Y] = 16 + 1 * 8, [PIPE_TEX_FACE_POS_Z] = 16 + 2 * 8, [PIPE_TEX_FACE_NEG_X] = 16 + 3 * 8, [PIPE_TEX_FACE_NEG_Y] = 16 + 4 * 8, [PIPE_TEX_FACE_NEG_Z] = 16 + 5 * 8, }; static inline unsigned align_nblocksx(enum pipe_format format, unsigned width, unsigned align_to) { return align(util_format_get_nblocksx(format, width), align_to); } static inline unsigned align_nblocksy(enum pipe_format format, unsigned width, unsigned align_to) { return align(util_format_get_nblocksy(format, width), align_to); } static inline unsigned get_pot_stride(enum pipe_format format, unsigned width) { return util_next_power_of_two(util_format_get_stride(format, width)); } static inline const char * get_tiling_string(enum i915_winsys_buffer_tile tile) { switch (tile) { case I915_TILE_NONE: return "none"; case I915_TILE_X: return "x"; case I915_TILE_Y: return "y"; default: assert(false); return "?"; } } /* * More advanced helper funcs */ static void i915_texture_set_level_info(struct i915_texture *tex, unsigned level, unsigned nr_images) { assert(level < ARRAY_SIZE(tex->nr_images)); assert(nr_images); assert(!tex->image_offset[level]); tex->nr_images[level] = nr_images; tex->image_offset[level] = MALLOC(nr_images * sizeof(struct offset_pair)); tex->image_offset[level][0].nblocksx = 0; tex->image_offset[level][0].nblocksy = 0; } unsigned i915_texture_offset(const struct i915_texture *tex, unsigned level, unsigned layer) { unsigned x, y; x = tex->image_offset[level][layer].nblocksx * util_format_get_blocksize(tex->b.format); y = tex->image_offset[level][layer].nblocksy; return y * tex->stride + x; } static void i915_texture_set_image_offset(struct i915_texture *tex, unsigned level, unsigned img, unsigned nblocksx, unsigned nblocksy) { /* for the first image and level make sure offset is zero */ assert(!(img == 0 && level == 0) || (nblocksx == 0 && nblocksy == 0)); assert(img < tex->nr_images[level]); tex->image_offset[level][img].nblocksx = nblocksx; tex->image_offset[level][img].nblocksy = nblocksy; #if DEBUG_TEXTURES debug_printf("%s: %p level %u, img %u (%u, %u)\n", __FUNCTION__, tex, level, img, x, y); #endif } static enum i915_winsys_buffer_tile i915_texture_tiling(struct i915_screen *is, struct i915_texture *tex) { if (!is->debug.tiling) return I915_TILE_NONE; if (tex->b.target == PIPE_TEXTURE_1D) return I915_TILE_NONE; if (util_format_is_compressed(tex->b.format)) return I915_TILE_X; if (is->debug.use_blitter) return I915_TILE_X; else return I915_TILE_Y; } /* * Shared layout functions */ /** * Special case to deal with scanout textures. */ static bool i9x5_scanout_layout(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4) return false; if (pt->width0 >= 240) { tex->stride = align(util_format_get_stride(pt->format, pt->width0), 64); tex->total_nblocksy = align_nblocksy(pt->format, pt->height0, 8); tex->tiling = I915_TILE_X; /* special case for cursors */ } else if (pt->width0 == 64 && pt->height0 == 64) { tex->stride = get_pot_stride(pt->format, pt->width0); tex->total_nblocksy = align_nblocksy(pt->format, pt->height0, 8); } else { return false; } i915_texture_set_level_info(tex, 0, 1); i915_texture_set_image_offset(tex, 0, 0, 0, 0); #if DEBUG_TEXTURE debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__, pt->width0, pt->height0, util_format_get_blocksize(pt->format), tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy); #endif return true; } /** * Special case to deal with shared textures. */ static bool i9x5_display_target_layout(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; if (pt->last_level > 0 || util_format_get_blocksize(pt->format) != 4) return false; /* fallback to normal textures for small textures */ if (pt->width0 < 240) return false; i915_texture_set_level_info(tex, 0, 1); i915_texture_set_image_offset(tex, 0, 0, 0, 0); tex->stride = align(util_format_get_stride(pt->format, pt->width0), 64); tex->total_nblocksy = align_nblocksy(pt->format, pt->height0, 8); tex->tiling = I915_TILE_X; #if DEBUG_TEXTURE debug_printf("%s size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__, pt->width0, pt->height0, util_format_get_blocksize(pt->format), tex->stride, tex->total_nblocksy, tex->stride * tex->total_nblocksy); #endif return true; } /** * Helper function for special layouts */ static bool i9x5_special_layout(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; /* Scanouts needs special care */ if (pt->bind & PIPE_BIND_SCANOUT) if (i9x5_scanout_layout(tex)) return true; /* Shared buffers needs to be compatible with X servers * * XXX: need a better name than shared for this if it is to be part * of core gallium, and probably move the flag to resource.flags, * rather than bindings. */ if (pt->bind & (PIPE_BIND_SHARED | PIPE_BIND_DISPLAY_TARGET)) if (i9x5_display_target_layout(tex)) return true; return false; } /** * Cube layout used on i915 and for non-compressed textures on i945. * * Hardware layout looks like: * * +-------+-------+ * | | | * | | | * | | | * | +x | +y | * | | | * | | | * | | | * | | | * +---+---+-------+ * | | | | * | +x| +y| | * | | | | * | | | | * +-+-+---+ +z | * | | | | | * +-+-+ +z| | * | | | | * +-+-+---+-------+ * | | | * | | | * | | | * | -x | -y | * | | | * | | | * | | | * | | | * +---+---+-------+ * | | | | * | -x| -y| | * | | | | * | | | | * +-+-+---+ -z | * | | | | | * +-+-+ -z| | * | | | | * +-+---+-------+ * */ static void i9x5_texture_layout_cube(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; unsigned width = util_next_power_of_two(pt->width0); const unsigned nblocks = util_format_get_nblocksx(pt->format, width); unsigned level; unsigned face; assert(pt->width0 == pt->height0); /* cubemap images are square */ /* double pitch for cube layouts */ tex->stride = align(nblocks * util_format_get_blocksize(pt->format) * 2, 4); tex->total_nblocksy = nblocks * 4; for (level = 0; level <= pt->last_level; level++) i915_texture_set_level_info(tex, level, 6); for (face = 0; face < 6; face++) { unsigned x = initial_offsets[face][0] * nblocks; unsigned y = initial_offsets[face][1] * nblocks; unsigned d = nblocks; for (level = 0; level <= pt->last_level; level++) { i915_texture_set_image_offset(tex, level, face, x, y); d >>= 1; x += step_offsets[face][0] * d; y += step_offsets[face][1] * d; } } } /* * i915 layout functions */ static void i915_texture_layout_2d(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; unsigned level; unsigned width = util_next_power_of_two(pt->width0); unsigned height = util_next_power_of_two(pt->height0); unsigned nblocksy = util_format_get_nblocksy(pt->format, width); unsigned align_y = 2; if (util_format_is_compressed(pt->format)) align_y = 1; tex->stride = align(util_format_get_stride(pt->format, width), 4); tex->total_nblocksy = 0; for (level = 0; level <= pt->last_level; level++) { i915_texture_set_level_info(tex, level, 1); i915_texture_set_image_offset(tex, level, 0, 0, tex->total_nblocksy); tex->total_nblocksy += nblocksy; width = u_minify(width, 1); height = u_minify(height, 1); nblocksy = align_nblocksy(pt->format, height, align_y); } } static void i915_texture_layout_3d(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; unsigned level; unsigned width = util_next_power_of_two(pt->width0); unsigned height = util_next_power_of_two(pt->height0); unsigned depth = util_next_power_of_two(pt->depth0); unsigned nblocksy = util_format_get_nblocksy(pt->format, height); unsigned stack_nblocksy = 0; /* Calculate the size of a single slice. */ tex->stride = align(util_format_get_stride(pt->format, width), 4); /* XXX: hardware expects/requires 9 levels at minimum. */ for (level = 0; level <= MAX2(8, pt->last_level); level++) { i915_texture_set_level_info(tex, level, depth); stack_nblocksy += MAX2(2, nblocksy); width = u_minify(width, 1); height = u_minify(height, 1); nblocksy = util_format_get_nblocksy(pt->format, height); } /* Fixup depth image_offsets: */ for (level = 0; level <= pt->last_level; level++) { unsigned i; for (i = 0; i < depth; i++) i915_texture_set_image_offset(tex, level, i, 0, i * stack_nblocksy); depth = u_minify(depth, 1); } /* Multiply slice size by texture depth for total size. It's * remarkable how wasteful of memory the i915 texture layouts * are. They are largely fixed in the i945. */ tex->total_nblocksy = stack_nblocksy * util_next_power_of_two(pt->depth0); } static bool i915_texture_layout(struct i915_texture *tex) { switch (tex->b.target) { case PIPE_TEXTURE_1D: case PIPE_TEXTURE_2D: case PIPE_TEXTURE_RECT: if (!i9x5_special_layout(tex)) i915_texture_layout_2d(tex); break; case PIPE_TEXTURE_3D: i915_texture_layout_3d(tex); break; case PIPE_TEXTURE_CUBE: i9x5_texture_layout_cube(tex); break; default: assert(0); return false; } return true; } /* * i945 layout functions */ static void i945_texture_layout_2d(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; int align_x = 4, align_y = 2; unsigned level; unsigned x = 0; unsigned y = 0; unsigned width = util_next_power_of_two(pt->width0); unsigned height = util_next_power_of_two(pt->height0); unsigned nblocksx = util_format_get_nblocksx(pt->format, width); unsigned nblocksy = util_format_get_nblocksy(pt->format, height); if (util_format_is_compressed(pt->format)) { align_x = 1; align_y = 1; } tex->stride = align(util_format_get_stride(pt->format, width), 4); /* May need to adjust pitch to accommodate the placement of * the 2nd mipmap level. This occurs when the alignment * constraints of mipmap placement push the right edge of the * 2nd mipmap level out past the width of its parent. */ if (pt->last_level > 0) { unsigned mip1_nblocksx = align_nblocksx(pt->format, u_minify(width, 1), align_x) + util_format_get_nblocksx(pt->format, u_minify(width, 2)); if (mip1_nblocksx > nblocksx) tex->stride = mip1_nblocksx * util_format_get_blocksize(pt->format); } /* Pitch must be a whole number of dwords */ tex->stride = align(tex->stride, 64); tex->total_nblocksy = 0; for (level = 0; level <= pt->last_level; level++) { i915_texture_set_level_info(tex, level, 1); i915_texture_set_image_offset(tex, level, 0, x, y); /* Because the images are packed better, the final offset * might not be the maximal one: */ tex->total_nblocksy = MAX2(tex->total_nblocksy, y + nblocksy); /* Layout_below: step right after second mipmap level. */ if (level == 1) { x += nblocksx; } else { y += nblocksy; } width = u_minify(width, 1); height = u_minify(height, 1); nblocksx = align_nblocksx(pt->format, width, align_x); nblocksy = align_nblocksy(pt->format, height, align_y); } } static void i945_texture_layout_3d(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; unsigned width = util_next_power_of_two(pt->width0); unsigned height = util_next_power_of_two(pt->height0); unsigned depth = util_next_power_of_two(pt->depth0); unsigned nblocksy = util_format_get_nblocksy(pt->format, height); unsigned pack_x_pitch, pack_x_nr; unsigned pack_y_pitch; unsigned level; tex->stride = align(util_format_get_stride(pt->format, width), 4); tex->total_nblocksy = 0; pack_y_pitch = MAX2(nblocksy, 2); pack_x_pitch = tex->stride / util_format_get_blocksize(pt->format); pack_x_nr = 1; for (level = 0; level <= pt->last_level; level++) { int x = 0; int y = 0; unsigned q, j; i915_texture_set_level_info(tex, level, depth); for (q = 0; q < depth;) { for (j = 0; j < pack_x_nr && q < depth; j++, q++) { i915_texture_set_image_offset(tex, level, q, x, y + tex->total_nblocksy); x += pack_x_pitch; } x = 0; y += pack_y_pitch; } tex->total_nblocksy += y; if (pack_x_pitch > 4) { pack_x_pitch >>= 1; pack_x_nr <<= 1; assert(pack_x_pitch * pack_x_nr * util_format_get_blocksize(pt->format) <= tex->stride); } if (pack_y_pitch > 2) { pack_y_pitch >>= 1; } width = u_minify(width, 1); height = u_minify(height, 1); depth = u_minify(depth, 1); nblocksy = util_format_get_nblocksy(pt->format, height); } } /** * Compressed cube texture map layout for i945 and later. * * The hardware layout looks like the 830-915 layout, except for the small * sizes. A zoomed in view of the layout for 945 is: * * +-------+-------+ * | 8x8 | 8x8 | * | | | * | | | * | +x | +y | * | | | * | | | * | | | * | | | * +---+---+-------+ * |4x4| | 8x8 | * | +x| | | * | | | | * | | | | * +---+ | +z | * |4x4| | | * | +y| | | * | | | | * +---+ +-------+ * * ... * * +-------+-------+ * | 8x8 | 8x8 | * | | | * | | | * | -x | -y | * | | | * | | | * | | | * | | | * +---+---+-------+ * |4x4| | 8x8 | * | -x| | | * | | | | * | | | | * +---+ | -z | * |4x4| | | * | -y| | | * | | | | * +---+ +---+---+---+---+---+---+---+---+---+ * |4x4| |4x4| |2x2| |2x2| |2x2| |2x2| * | +z| | -z| | +x| | +y| | +z| | -x| ... * | | | | | | | | | | | | * +---+ +---+ +---+ +---+ +---+ +---+ * * The bottom row continues with the remaining 2x2 then the 1x1 mip contents * in order, with each of them aligned to a 8x8 block boundary. Thus, for * 32x32 cube maps and smaller, the bottom row layout is going to dictate the * pitch of the tree. For a tree with 4x4 images, the pitch is at least * 14 * 8 = 112 texels, for 2x2 it is at least 12 * 8 texels, and for 1x1 * it is 6 * 8 texels. */ static void i945_texture_layout_cube(struct i915_texture *tex) { struct pipe_resource *pt = &tex->b; unsigned width = util_next_power_of_two(pt->width0); const unsigned nblocks = util_format_get_nblocksx(pt->format, width); const unsigned dim = width; unsigned level; unsigned face; assert(pt->width0 == pt->height0); /* cubemap images are square */ assert(util_format_is_compressed(pt->format)); /* compressed only */ /* * Depending on the size of the largest images, pitch can be * determined either by the old-style packing of cubemap faces, * or the final row of 4x4, 2x2 and 1x1 faces below this. * * 64 * 2 / 4 = 32 * 14 * 2 = 28 */ if (width >= 64) tex->stride = nblocks * 2 * util_format_get_blocksize(pt->format); else tex->stride = 14 * 2 * util_format_get_blocksize(pt->format); /* * Something similary apply for height as well. */ if (width >= 4) tex->total_nblocksy = nblocks * 4 + 1; else tex->total_nblocksy = 1; /* Set all the levels to effectively occupy the whole rectangular region */ for (level = 0; level <= pt->last_level; level++) i915_texture_set_level_info(tex, level, 6); for (face = 0; face < 6; face++) { /* all calculations in pixels */ unsigned total_height = tex->total_nblocksy * 4; unsigned x = initial_offsets[face][0] * dim; unsigned y = initial_offsets[face][1] * dim; unsigned d = dim; if (dim == 4 && face >= 4) { x = (face - 4) * 8; y = tex->total_nblocksy * 4 - 4; /* 4 = 1 block */ } else if (dim < 4 && (face > 0)) { x = face * 8; y = total_height - 4; } for (level = 0; level <= pt->last_level; level++) { i915_texture_set_image_offset(tex, level, face, util_format_get_nblocksx(pt->format, x), util_format_get_nblocksy(pt->format, y)); d >>= 1; switch (d) { case 4: switch (face) { case PIPE_TEX_FACE_POS_X: case PIPE_TEX_FACE_NEG_X: x += step_offsets[face][0] * d; y += step_offsets[face][1] * d; break; case PIPE_TEX_FACE_POS_Y: case PIPE_TEX_FACE_NEG_Y: y += 12; x -= 8; break; case PIPE_TEX_FACE_POS_Z: case PIPE_TEX_FACE_NEG_Z: y = total_height - 4; x = (face - 4) * 8; break; } break; case 2: y = total_height - 4; x = bottom_offsets[face]; break; case 1: x += 48; break; default: x += step_offsets[face][0] * d; y += step_offsets[face][1] * d; break; } } } } static bool i945_texture_layout(struct i915_texture *tex) { switch (tex->b.target) { case PIPE_TEXTURE_1D: case PIPE_TEXTURE_2D: case PIPE_TEXTURE_RECT: if (!i9x5_special_layout(tex)) i945_texture_layout_2d(tex); break; case PIPE_TEXTURE_3D: i945_texture_layout_3d(tex); break; case PIPE_TEXTURE_CUBE: if (!util_format_is_compressed(tex->b.format)) i9x5_texture_layout_cube(tex); else i945_texture_layout_cube(tex); break; default: assert(0); return false; } return true; } /* * Screen texture functions */ bool i915_resource_get_handle(struct pipe_screen *screen, struct pipe_context *context, struct pipe_resource *texture, struct winsys_handle *whandle, unsigned usage) { if (texture->target == PIPE_BUFFER) return false; struct i915_screen *is = i915_screen(screen); struct i915_texture *tex = i915_texture(texture); struct i915_winsys *iws = is->iws; return iws->buffer_get_handle(iws, tex->buffer, whandle, tex->stride); } void * i915_texture_transfer_map(struct pipe_context *pipe, struct pipe_resource *resource, unsigned level, unsigned usage, const struct pipe_box *box, struct pipe_transfer **ptransfer) { struct i915_context *i915 = i915_context(pipe); struct i915_texture *tex = i915_texture(resource); struct i915_transfer *transfer = slab_alloc_st(&i915->texture_transfer_pool); bool use_staging_texture = false; struct i915_winsys *iws = i915_screen(pipe->screen)->iws; enum pipe_format format = resource->format; unsigned offset; char *map; if (!transfer) return NULL; transfer->b.resource = resource; transfer->b.level = level; transfer->b.usage = usage; transfer->b.box = *box; transfer->b.stride = tex->stride; transfer->staging_texture = NULL; /* XXX: handle depth textures everyhwere*/ transfer->b.layer_stride = 0; /* if we use staging transfers, only support textures we can render to, * because we need that for u_blitter */ if (i915->blitter && util_blitter_is_copy_supported(i915->blitter, resource, resource) && (usage & PIPE_MAP_WRITE) && !(usage & (PIPE_MAP_READ | PIPE_MAP_DONTBLOCK | PIPE_MAP_UNSYNCHRONIZED))) use_staging_texture = true; use_staging_texture = false; if (use_staging_texture) { /* * Allocate the untiled staging texture. * If the alloc fails, transfer->staging_texture is NULL and we fallback * to a map() */ transfer->staging_texture = i915_texture_create(pipe->screen, resource, true); } if (resource->target != PIPE_TEXTURE_3D && resource->target != PIPE_TEXTURE_CUBE) { assert(box->z == 0); assert(box->depth == 1); } if (transfer->staging_texture) { tex = i915_texture(transfer->staging_texture); } else { /* TODO this is a sledgehammer */ tex = i915_texture(resource); pipe->flush(pipe, NULL, 0); } offset = i915_texture_offset(tex, transfer->b.level, box->z); map = iws->buffer_map(iws, tex->buffer, (transfer->b.usage & PIPE_MAP_WRITE) ? true : false); if (!map) { pipe_resource_reference(&transfer->staging_texture, NULL); FREE(transfer); return NULL; } *ptransfer = &transfer->b; return map + offset + box->y / util_format_get_blockheight(format) * transfer->b.stride + box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format); } void i915_texture_transfer_unmap(struct pipe_context *pipe, struct pipe_transfer *transfer) { struct i915_context *i915 = i915_context(pipe); struct i915_transfer *itransfer = (struct i915_transfer *)transfer; struct i915_texture *tex = i915_texture(itransfer->b.resource); struct i915_winsys *iws = i915_screen(tex->b.screen)->iws; if (itransfer->staging_texture) tex = i915_texture(itransfer->staging_texture); iws->buffer_unmap(iws, tex->buffer); if ((itransfer->staging_texture) && (transfer->usage & PIPE_MAP_WRITE)) { struct pipe_box sbox; u_box_origin_2d(itransfer->b.box.width, itransfer->b.box.height, &sbox); pipe->resource_copy_region(pipe, itransfer->b.resource, itransfer->b.level, itransfer->b.box.x, itransfer->b.box.y, itransfer->b.box.z, itransfer->staging_texture, 0, &sbox); pipe->flush(pipe, NULL, 0); pipe_resource_reference(&itransfer->staging_texture, NULL); } slab_free_st(&i915->texture_transfer_pool, itransfer); } void i915_texture_subdata(struct pipe_context *pipe, struct pipe_resource *resource, unsigned level, unsigned usage, const struct pipe_box *box, const void *data, unsigned stride, unsigned layer_stride) { /* i915's cube and 3D maps are not laid out such that one could use a * layer_stride to get from one layer to the next, so we have to walk the * layers individually. */ struct pipe_box layer_box = *box; layer_box.depth = 1; for (layer_box.z = box->z; layer_box.z < box->z + box->depth; layer_box.z++) { u_default_texture_subdata(pipe, resource, level, usage, &layer_box, data, stride, layer_stride); data += layer_stride; } } struct pipe_resource * i915_texture_create(struct pipe_screen *screen, const struct pipe_resource *template, bool force_untiled) { struct i915_screen *is = i915_screen(screen); struct i915_winsys *iws = is->iws; struct i915_texture *tex = CALLOC_STRUCT(i915_texture); unsigned buf_usage = 0; if (!tex) return NULL; tex->b = *template; pipe_reference_init(&tex->b.reference, 1); tex->b.screen = screen; if ((force_untiled) || (template->usage == PIPE_USAGE_STREAM)) tex->tiling = I915_TILE_NONE; else tex->tiling = i915_texture_tiling(is, tex); if (is->is_i945) { if (!i945_texture_layout(tex)) goto fail; } else { if (!i915_texture_layout(tex)) goto fail; } /* for scanouts and cursors, cursors arn't scanouts */ /* XXX: use a custom flag for cursors, don't rely on magically * guessing that this is Xorg asking for a cursor */ if ((template->bind & PIPE_BIND_SCANOUT) && template->width0 != 64) buf_usage = I915_NEW_SCANOUT; else buf_usage = I915_NEW_TEXTURE; tex->buffer = iws->buffer_create_tiled( iws, &tex->stride, tex->total_nblocksy, &tex->tiling, buf_usage); if (!tex->buffer) goto fail; I915_DBG(DBG_TEXTURE, "%s: %p stride %u, blocks (%u, %u) tiling %s\n", __func__, tex, tex->stride, tex->stride / util_format_get_blocksize(tex->b.format), tex->total_nblocksy, get_tiling_string(tex->tiling)); return &tex->b; fail: FREE(tex); return NULL; } struct pipe_resource * i915_texture_from_handle(struct pipe_screen *screen, const struct pipe_resource *template, struct winsys_handle *whandle) { struct i915_screen *is = i915_screen(screen); struct i915_texture *tex; struct i915_winsys *iws = is->iws; struct i915_winsys_buffer *buffer; unsigned stride; enum i915_winsys_buffer_tile tiling; assert(screen); buffer = iws->buffer_from_handle(iws, whandle, template->height0, &tiling, &stride); /* Only supports one type */ if ((template->target != PIPE_TEXTURE_2D && template->target != PIPE_TEXTURE_RECT) || template->last_level != 0 || template->depth0 != 1) { return NULL; } tex = CALLOC_STRUCT(i915_texture); if (!tex) return NULL; tex->b = *template; pipe_reference_init(&tex->b.reference, 1); tex->b.screen = screen; tex->stride = stride; tex->tiling = tiling; tex->total_nblocksy = align_nblocksy(tex->b.format, tex->b.height0, 8); i915_texture_set_level_info(tex, 0, 1); i915_texture_set_image_offset(tex, 0, 0, 0, 0); tex->buffer = buffer; I915_DBG(DBG_TEXTURE, "%s: %p stride %u, blocks (%u, %u) tiling %s\n", __func__, tex, tex->stride, tex->stride / util_format_get_blocksize(tex->b.format), tex->total_nblocksy, get_tiling_string(tex->tiling)); return &tex->b; }