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renderer/texture: Fix importing and exporting BCn mips

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Macdu
2023-10-25 21:48:40 +02:00
parent 33f72c7b2f
commit c318e598ee
1 changed files with 17 additions and 3 deletions
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external/ddspp/ddspp.h
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+17 -3
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@@ -1018,19 +1018,33 @@ namespace ddspp
else else
{ {
unsigned long long mipChainSize = 0; unsigned long long mipChainSize = 0;
unsigned int width = desc.width;
unsigned int height = desc.height;
for (unsigned int m = 0; m < desc.numMips; ++m) for (unsigned int m = 0; m < desc.numMips; ++m)
{ {
unsigned long long mipSize = mip0Size >> 2 * m; // Divide by 2 in width and height unsigned long long blocksX = (width + desc.blockWidth - 1) / desc.blockWidth;
mipChainSize += mipSize > desc.bitsPerPixelOrBlock ? mipSize : desc.bitsPerPixelOrBlock; unsigned long long blocksY = (height + desc.blockHeight - 1) / desc.blockHeight;
unsigned long long mipSize = blocksX * blocksY * desc.bitsPerPixelOrBlock;
mipChainSize += mipSize;
width >>= 1;
height >>= 1;
} }
offset += mipChainSize * slice; offset += mipChainSize * slice;
width = desc.width;
height = desc.height;
for (unsigned int m = 0; m < mip; ++m) for (unsigned int m = 0; m < mip; ++m)
{ {
unsigned long long mipSize = mip0Size >> 2 * m; // Divide by 2 in width and height unsigned long long blocksX = (width + desc.blockWidth - 1) / desc.blockWidth;
unsigned long long blocksY = (height + desc.blockHeight - 1) / desc.blockHeight;
unsigned long long mipSize = blocksX * blocksY * desc.bitsPerPixelOrBlock;
offset += mipSize > desc.bitsPerPixelOrBlock ? mipSize : desc.bitsPerPixelOrBlock; offset += mipSize > desc.bitsPerPixelOrBlock ? mipSize : desc.bitsPerPixelOrBlock;
width >>= 1;
height >>= 1;
} }
} }