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Merge pull request #1484 from FernandoS27/calculate-size 

Implemented helper function to correctly calculate a texture's size
This commit is contained in:
bunnei 2018-10-12 21:12:53 -04:00 committed by GitHub
parent ffcda6c08e 97b6405a17
commit 38b027aa81
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2 changed files with 22 additions and 0 deletions
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16
src/video_core/textures/decoders.cpp
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@ -4,6 +4,7 @@
#include <cmath>
#include <cstring>
#include "common/alignment.h"
#include "common/assert.h"
#include "core/memory.h"
#include "video_core/gpu.h"
@ -199,4 +200,19 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
return rgba_data;
}
std::size_t CalculateSize(bool tiled, u32 bytes_per_pixel, u32 width, u32 height, u32 depth,
u32 block_height, u32 block_depth) {
if (tiled) {
const u32 gobs_in_x = 64 / bytes_per_pixel;
const u32 gobs_in_y = 8;
const u32 gobs_in_z = 1;
const u32 aligned_width = Common::AlignUp(width, gobs_in_x);
const u32 aligned_height = Common::AlignUp(height, gobs_in_y * block_height);
const u32 aligned_depth = Common::AlignUp(depth, gobs_in_z * block_depth);
return aligned_width * aligned_height * aligned_depth * bytes_per_pixel;
} else {
return width * height * depth * bytes_per_pixel;
}
}
} // namespace Tegra::Texture

6
src/video_core/textures/decoders.h
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@ -32,4 +32,10 @@ void CopySwizzledData(u32 width, u32 height, u32 bytes_per_pixel, u32 out_bytes_
std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat format, u32 width,
u32 height);
/**
* This function calculates the correct size of a texture depending if it's tiled or not.
*/
std::size_t CalculateSize(bool tiled, u32 bytes_per_pixel, u32 width, u32 height, u32 depth,
u32 block_height, u32 block_depth);
} // namespace Tegra::Texture