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texture_cache: Optimize GetMipBlockHeight and GetMipBlockDepth

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This commit is contained in:
Fernando Sahmkow
2019-05-10 22:12:35 -04:00
committed by ReinUsesLisp
parent a4a58be2d4
commit 94f2be5473
2 changed files with 50 additions and 13 deletions
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19
src/video_core/texture_cache/surface_params.cpp
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@@ -5,6 +5,7 @@
#include <map>
#include "common/alignment.h"
#include "common/bit_util.h"
#include "common/cityhash.h"
#include "core/core.h"
#include "video_core/engines/shader_bytecode.h"
@@ -190,11 +191,8 @@ u32 SurfaceParams::GetMipBlockHeight(u32 level) const {
const u32 height{GetMipHeight(level)};
const u32 default_block_height{GetDefaultBlockHeight()};
const u32 blocks_in_y{(height + default_block_height - 1) / default_block_height};
u32 block_height = 4;
while (block_height > 0 && blocks_in_y <= (1U << block_height) * 4) {
--block_height;
}
return block_height;
const u32 block_height = Common::Log2Ceil32(blocks_in_y);
return std::clamp(block_height, 3U, 8U) - 3U;
}
u32 SurfaceParams::GetMipBlockDepth(u32 level) const {
@@ -206,15 +204,10 @@ u32 SurfaceParams::GetMipBlockDepth(u32 level) const {
}
const u32 depth{GetMipDepth(level)};
u32 block_depth = 5;
while (block_depth > 0 && depth * 2 <= (1U << block_depth)) {
--block_depth;
const u32 block_depth = Common::Log2Ceil32(depth);
if (block_depth > 4) {
return 5 - (GetMipBlockHeight(level) >= 2);
}
if (block_depth == 5 && GetMipBlockHeight(level) >= 2) {
return 4;
}
return block_depth;
}