| /************************************************************************** |
| * |
| * 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 <keithw@vmware.com> |
| * Michel Dänzer <daenzer@vmware.com> |
| */ |
| |
| #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; |
| } |
