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Finish BlueToAlpha functionality

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This commit is contained in:
Henrik Rydgård 2022-04-24 22:54:08 +02:00
parent 0c66087cc7
commit 6b2dec91b5
4 changed files with 6 additions and 4 deletions
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4
GPU/Common/FragmentShaderGenerator.cpp
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@ -858,7 +858,9 @@ bool GenerateFragmentShader(const FShaderID &id, char *buffer, const ShaderLangu
WRITE(p, " v.rgb = v.rgb * 2.0;\n");
}
if (replaceBlend == REPLACE_BLEND_PRE_SRC || replaceBlend == REPLACE_BLEND_PRE_SRC_2X_ALPHA) {
// In some cases we need to replicate the first half of the blend equation here.
// In case of blue-to-alpha, it's since we overwrite alpha with blue before the actual blend equation runs.
if (replaceBlend == REPLACE_BLEND_PRE_SRC || replaceBlend == REPLACE_BLEND_PRE_SRC_2X_ALPHA || replaceBlend == REPLACE_BLEND_BLUE_TO_ALPHA) {
const char *srcFactor = "ERROR";
switch (replaceBlendFuncA) {
case GE_SRCBLEND_DSTCOLOR: srcFactor = "ERROR"; break;

2
GPU/Common/GPUStateUtils.cpp
View file

@ -1332,7 +1332,7 @@ void ConvertBlendState(GenericBlendState &blendState, bool allowFramebufferRead,
break;
}
} else if (blueToAlpha) {
blendState.setFactors(BlendFactor::ZERO, BlendFactor::ZERO, glBlendFuncA, glBlendFuncB);
blendState.setFactors(BlendFactor::ZERO, BlendFactor::ZERO, BlendFactor::ONE, glBlendFuncB);
blendState.setEquation(BlendEq::ADD, colorEq);
return;
} else {

3
GPU/Common/ShaderId.cpp
View file

@ -190,7 +190,7 @@ std::string FragmentShaderDesc(const FShaderID &id) {
if (blendBits) {
switch (blendBits) {
case ReplaceBlendType::REPLACE_BLEND_BLUE_TO_ALPHA:
desc << "BlueToAlpha";
desc << "BlueToAlpha_" << "A:" << id.Bits(FS_BIT_BLENDFUNC_A, 4);
break;
default:
desc << "ReplaceBlend_" << id.Bits(FS_BIT_REPLACE_BLEND, 3)
@ -325,6 +325,7 @@ void ComputeFragmentShaderID(FShaderID *id_out, const Draw::Bugs &bugs) {
// If replaceBlend == REPLACE_BLEND_STANDARD (or REPLACE_BLEND_NO) nothing is done, so we kill these bits.
if (replaceBlend == REPLACE_BLEND_BLUE_TO_ALPHA) {
id.SetBits(FS_BIT_REPLACE_BLEND, 3, replaceBlend);
id.SetBits(FS_BIT_BLENDFUNC_A, 4, gstate.getBlendFuncA());
} else if (replaceBlend > REPLACE_BLEND_STANDARD) {
// 3 bits.
id.SetBits(FS_BIT_REPLACE_BLEND, 3, replaceBlend);

1
assets/compat.ini
View file

@ -995,7 +995,6 @@ ULES01402 = true
ULUS10513 = true
ULJM05812 = true
NPJH50371 = true
# Some games render first to RGB of a 4444 texture, then they switch to 565 and render masked to blue,
# just to be able to render to the alpha channel of the 4444. We can detect that and reroute rendering
# to avoid problems.