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implement framebuffer fetch

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Samuliak 2025-01-08 16:09:15 +01:00
parent 68aa40518d
commit e4068856bc
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6 changed files with 184 additions and 98 deletions
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36
src/Cafe/HW/Latte/LegacyShaderDecompiler/LatteDecompilerAnalyzer.cpp
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@ -850,6 +850,42 @@ void LatteDecompiler_analyze(LatteDecompilerShaderContext* shaderContext, LatteD
shader->textureUnitList[shader->textureUnitListCount] = i;
shader->textureUnitListCount++;
}
shader->textureRenderTargetIndex[i] = 255;
}
// check if textures are used as render targets
if (shader->shaderType == LatteConst::ShaderType::Pixel)
{
for (sint32 i = 0; i < shader->textureUnitListCount; i++)
{
sint32 textureIndex = shader->textureUnitList[i];
const auto& texRegister = texRegs[textureIndex];
// get physical address of texture data
MPTR physAddr = (texRegister.word2.get_BASE_ADDRESS() << 8);
if (physAddr == MPTR_NULL)
continue; // invalid data
for (sint32 j = 0; j < LATTE_NUM_COLOR_TARGET; j++)
{
uint32* colorBufferRegBase = shaderContext->contextRegisters + (mmCB_COLOR0_BASE + j);
uint32 regColorBufferBase = colorBufferRegBase[mmCB_COLOR0_BASE - mmCB_COLOR0_BASE] & 0xFFFFFF00; // the low 8 bits are ignored? How to Survive seems to rely on this
uint32 regColorSize = colorBufferRegBase[mmCB_COLOR0_SIZE - mmCB_COLOR0_BASE];
uint32 regColorInfo = colorBufferRegBase[mmCB_COLOR0_INFO - mmCB_COLOR0_BASE];
uint32 regColorView = colorBufferRegBase[mmCB_COLOR0_VIEW - mmCB_COLOR0_BASE];
// decode color buffer reg info
Latte::E_HWTILEMODE colorBufferTileMode = (Latte::E_HWTILEMODE)((regColorInfo >> 8) & 0xF);
uint32 numberType = (regColorInfo >> 12) & 7;
Latte::E_GX2SURFFMT colorBufferFormat = LatteMRT::GetColorBufferFormat(j, *shaderContext->contextRegistersNew);
MPTR colorBufferPhysMem = regColorBufferBase;
if (physAddr == colorBufferPhysMem)
{
shader->textureRenderTargetIndex[i] = j;
break;
}
}
}
}
// for geometry shaders check the copy shader for stream writes
if (shader->shaderType == LatteConst::ShaderType::Geometry && shaderContext->parsedGSCopyShader->list_streamWrites.empty() == false)