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Software: Implement pixel engine alpha read mode

This commit is contained in:
Pokechu22 2022-01-29 13:53:54 -08:00
parent 8882eb040a
commit af316f7bfe
1 changed files with 22 additions and 0 deletions
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22
Source/Core/VideoBackends/Software/SWRenderer.cpp
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@ -20,6 +20,7 @@
#include "VideoCommon/AbstractShader.h"
#include "VideoCommon/AbstractTexture.h"
#include "VideoCommon/NativeVertexFormat.h"
#include "VideoCommon/PixelEngine.h"
#include "VideoCommon/VideoBackendBase.h"
#include "VideoCommon/VideoCommon.h"
@ -132,6 +133,27 @@ u32 SWRenderer::AccessEFB(EFBAccessType type, u32 x, u32 y, u32 InputData)
// rgba to argb
value = (color >> 8) | (color & 0xff) << 24;
// check what to do with the alpha channel (GX_PokeAlphaRead)
PixelEngine::AlphaReadMode alpha_read_mode = PixelEngine::GetAlphaReadMode();
if (alpha_read_mode == PixelEngine::AlphaReadMode::ReadNone)
{
// value is OK as it is
}
else if (alpha_read_mode == PixelEngine::AlphaReadMode::ReadFF)
{
value |= 0xFF000000;
}
else
{
if (alpha_read_mode != PixelEngine::AlphaReadMode::Read00)
{
PanicAlertFmt("Invalid PE alpha read mode: {}", static_cast<u16>(alpha_read_mode));
}
value &= 0x00FFFFFF;
}
break;
}
default: