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TextureCache: Support reinterpreting formats for VRAM textures

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This commit is contained in:
Stenzek
2019-07-14 15:24:12 +10:00
parent 77f406c8a8
commit 946571b759
7 changed files with 335 additions and 6 deletions
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41
Source/Core/VideoCommon/TextureDecoder.h
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@ -99,6 +99,47 @@ static inline bool IsValidTLUTFormat(TLUTFormat tlutfmt)
tlutfmt == TLUTFormat::RGB5A3;
}
static inline bool IsCompatibleTextureFormat(TextureFormat from_format, TextureFormat to_format)
{
if (from_format == to_format)
return true;
// Indexed and paletted formats are "compatible", that is do not require conversion.
switch (from_format)
{
case TextureFormat::I4:
case TextureFormat::C4:
return to_format == TextureFormat::I4 || to_format == TextureFormat::C4;
case TextureFormat::I8:
case TextureFormat::C8:
return to_format == TextureFormat::I8 || to_format == TextureFormat::C8;
default:
return false;
}
}
static inline bool CanReinterpretTextureOnGPU(TextureFormat from_format, TextureFormat to_format)
{
// Currently, we can only reinterpret textures of the same width.
switch (from_format)
{
case TextureFormat::I8:
case TextureFormat::IA4:
return to_format == TextureFormat::I8 || to_format == TextureFormat::IA4;
case TextureFormat::IA8:
case TextureFormat::RGB565:
case TextureFormat::RGB5A3:
return to_format == TextureFormat::IA8 || to_format == TextureFormat::RGB565 ||
to_format == TextureFormat::RGB5A3;
default:
return false;
}
}
int TexDecoder_GetTexelSizeInNibbles(TextureFormat format);
int TexDecoder_GetTextureSizeInBytes(int width, int height, TextureFormat format);
int TexDecoder_GetBlockWidthInTexels(TextureFormat format);