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Vulkan: Implement texture decoder for R5G6B5_UNORM to R8G8B8A8_UNORM (#320)

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Tillsunset 2022-10-01 18:48:13 -05:00 committed by GitHub
parent 9541c8ae85
commit 11f6e2b7ee
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2 changed files with 52 additions and 1 deletions
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51
src/Cafe/HW/Latte/Core/LatteTextureLoader.h
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@ -978,6 +978,57 @@ public:
}
};
class TextureDecoder_R5G6B5_UNORM_To_R8G8B8A8_UNORM : public TextureDecoder, public SingletonClass<TextureDecoder_R5G6B5_UNORM_To_R8G8B8A8_UNORM>
{
public:
sint32 getBytesPerTexel(LatteTextureLoaderCtx* textureLoader) override
{
return 4;
}
void decode(LatteTextureLoaderCtx* textureLoader, uint8* outputData) override
{
for (sint32 y = 0; y < textureLoader->height; y += textureLoader->stepY)
{
sint32 yc = y;
for (sint32 x = 0; x < textureLoader->width; x += textureLoader->stepX)
{
uint8* blockData = LatteTextureLoader_GetInput(textureLoader, x, y);
sint32 pixelOffset = (x + yc * textureLoader->width) * 4;
uint16 v0 = (*(uint16*)(blockData + 0));
uint8 c0 = (v0 & 0x1F);
uint8 c1 = (v0 >> 5) & 0x3F;
uint8 c2 = (v0 >> 11) & 0x1F;
c0 = (c0 << 3) | c0 >> 3;// blue
c1 = (c1 << 2) | c1 >> 4;// green
c2 = (c2 << 3) | c2 >> 3;// red
*(uint8*)(outputData + pixelOffset + 0) = c0;// blue
*(uint8*)(outputData + pixelOffset + 1) = c1;// green
*(uint8*)(outputData + pixelOffset + 2) = c2;// red
*(uint8*)(outputData + pixelOffset + 3) = 255;//alpha
}
}
}
void decodePixelToRGBA(uint8* blockData, uint8* outputPixel, uint8 blockOffsetX, uint8 blockOffsetY) override
{
uint16 v0 = *(uint16*)(blockData + 0);
uint8 c0 = (v0 & 0x1F);// red
uint8 c1 = (v0 >> 5) & 0x3F;// green
uint8 c2 = (v0 >> 11) & 0x1F; // blue
c0 = (c0 << 3) | c0 >> 3;
c1 = (c1 << 2) | c1 >> 4;
c2 = (c2 << 3) | c2 >> 3;
*(outputPixel + 0) = c0;// red
*(outputPixel + 1) = c1;// green
*(outputPixel + 2) = c2;// blue
*(outputPixel + 3) = 255;// alpha
}
};
class TextureDecoder_R5_G5_B5_A1_UNORM : public TextureDecoder, public SingletonClass<TextureDecoder_R5_G5_B5_A1_UNORM>
{
public:

2
src/Cafe/HW/Latte/Renderer/Vulkan/VulkanRenderer.cpp
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@ -2642,7 +2642,7 @@ void VulkanRenderer::GetTextureFormatInfoVK(Latte::E_GX2SURFFMT format, bool isD
case Latte::E_GX2SURFFMT::R5_G6_B5_UNORM:
if (m_supportedFormatInfo.fmt_r5g6b5_unorm_pack == false) {
formatInfoOut->vkImageFormat = VK_FORMAT_R8G8B8A8_UNORM;
formatInfoOut->decoder = nullptr;
formatInfoOut->decoder = TextureDecoder_R5G6B5_UNORM_To_R8G8B8A8_UNORM::getInstance();
}
else {
// Vulkan has R in MSB, GPU7 has it in LSB