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[GPU] Fix mip size calculation for compressed textures

This commit is contained in:
Dr. Chat 2018-05-03 18:34:23 -05:00
parent f45cd398ef
commit 911588e9dc
1 changed files with 17 additions and 9 deletions
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26
src/xenia/gpu/texture_info.cc
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@ -381,17 +381,25 @@ uint32_t TextureInfo::GetMipLocation(const TextureInfo& src, uint32_t mip,
}
uint32_t TextureInfo::GetMipSize(const TextureInfo& src, uint32_t mip) {
uint32_t size = src.format_info()->block_width *
src.format_info()->block_height *
(xe::next_pow2(src.width + 1) >> mip) *
(xe::next_pow2(src.height + 1) >> mip) *
src.format_info()->bits_per_pixel / 8;
uint32_t bytes_per_block = src.format_info()->block_width *
src.format_info()->block_height *
src.format_info()->bits_per_pixel / 8;
// One tile is 32x32 blocks
uint32_t tile_size = src.format_info()->block_width *
src.format_info()->block_height * 32 * 32 *
src.format_info()->bits_per_pixel / 8;
uint32_t logical_width = xe::next_pow2(src.width + 1) >> mip;
uint32_t logical_height = xe::next_pow2(src.height + 1) >> mip;
// w/h in blocks
uint32_t block_width =
xe::round_up(logical_width, src.format_info()->block_width) /
src.format_info()->block_width;
uint32_t block_height =
xe::round_up(logical_height, src.format_info()->block_height) /
src.format_info()->block_height;
uint32_t size = block_width * block_height * bytes_per_block;
// Minimum of one tile, which is 32x32 blocks.
uint32_t tile_size = 32 * 32 * bytes_per_block;
return std::max(size, tile_size);
}