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TextureConversionShader: Consider source format of EFB for EFB2RAM

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Currently, we use the alpha channel from the EFB even if the current
format does not include an alpha channel. Now, the alpha channel is set
to 1 if the format does not have an alpha channel, as well as truncating
to 5/6 bits per channel. This matches the EFB-to-texture behavior.
This commit is contained in:
Stenzek 2017-04-04 23:53:03 +10:00
commit 3847e226ab
3 changed files with 150 additions and 101 deletions
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17
Source/Core/VideoCommon/TextureDecoder.h
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@ -4,6 +4,7 @@
#pragma once
#include <tuple>
#include "Common/CommonTypes.h"
enum
@ -67,6 +68,22 @@ enum TlutFormat
GX_TL_RGB5A3 = 0x2,
};
struct EFBCopyFormat
{
EFBCopyFormat(u32 efb_format_, TextureFormat copy_format_)
: efb_format(efb_format_), copy_format(copy_format_)
{
}
bool operator<(const EFBCopyFormat& rhs) const
{
return std::tie(efb_format, copy_format) < std::tie(rhs.efb_format, rhs.copy_format);
}
u32 efb_format;
TextureFormat copy_format;
};
int TexDecoder_GetTexelSizeInNibbles(int format);
int TexDecoder_GetTextureSizeInBytes(int width, int height, int format);
int TexDecoder_GetBlockWidthInTexels(u32 format);