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https://github.com/cemu-project/Cemu.git
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start the shader decompiler
This commit is contained in:
Samuliak
parent
46981d7b03
commit
69597166f3
7 changed files with 5088 additions and 8 deletions
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@ -0,0 +1,426 @@
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#pragma once
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namespace LatteDecompiler
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{
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static void _emitUniformVariables(LatteDecompilerShaderContext* decompilerContext, LatteDecompilerOutputUniformOffsets& uniformOffsets)
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{
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LatteDecompilerShaderResourceMapping& resourceMapping = decompilerContext->output->resourceMappingVK;
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sint32 uniformCurrentOffset = 0;
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auto shader = decompilerContext->shader;
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auto shaderType = decompilerContext->shader->shaderType;
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auto shaderSrc = decompilerContext->shaderSource;
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if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_REMAPPED)
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{
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// uniform registers or buffers are accessed statically with predictable offsets
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// this allows us to remap the used entries into a more compact array
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if (shaderType == LatteConst::ShaderType::Vertex)
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shaderSrc->addFmt("uniform ivec4 uf_remappedVS[{}];" _CRLF, (sint32)shader->list_remappedUniformEntries.size());
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else if (shaderType == LatteConst::ShaderType::Pixel)
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shaderSrc->addFmt("uniform ivec4 uf_remappedPS[{}];" _CRLF, (sint32)shader->list_remappedUniformEntries.size());
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else if (shaderType == LatteConst::ShaderType::Geometry)
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shaderSrc->addFmt("uniform ivec4 uf_remappedGS[{}];" _CRLF, (sint32)shader->list_remappedUniformEntries.size());
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else
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debugBreakpoint();
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uniformOffsets.offset_remapped = uniformCurrentOffset;
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uniformCurrentOffset += 16 * shader->list_remappedUniformEntries.size();
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}
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else if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_FULL_CFILE)
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{
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uint32 cfileSize = decompilerContext->analyzer.uniformRegisterAccessTracker.DetermineSize(decompilerContext->shaderBaseHash, 256);
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// full or partial uniform register file has to be present
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if (shaderType == LatteConst::ShaderType::Vertex)
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shaderSrc->addFmt("uniform ivec4 uf_uniformRegisterVS[{}];" _CRLF, cfileSize);
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else if (shaderType == LatteConst::ShaderType::Pixel)
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shaderSrc->addFmt("uniform ivec4 uf_uniformRegisterPS[{}];" _CRLF, cfileSize);
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else if (shaderType == LatteConst::ShaderType::Geometry)
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shaderSrc->addFmt("uniform ivec4 uf_uniformRegisterGS[{}];" _CRLF, cfileSize);
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uniformOffsets.offset_uniformRegister = uniformCurrentOffset;
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uniformOffsets.count_uniformRegister = cfileSize;
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uniformCurrentOffset += 16 * cfileSize;
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}
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// special uniforms
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bool hasAnyViewportScaleDisabled =
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!decompilerContext->contextRegistersNew->PA_CL_VTE_CNTL.get_VPORT_X_SCALE_ENA() ||
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!decompilerContext->contextRegistersNew->PA_CL_VTE_CNTL.get_VPORT_Y_SCALE_ENA() ||
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!decompilerContext->contextRegistersNew->PA_CL_VTE_CNTL.get_VPORT_Z_SCALE_ENA();
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex && hasAnyViewportScaleDisabled)
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{
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// aka GX2 special state 0
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uniformCurrentOffset = (uniformCurrentOffset + 7)&~7;
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shaderSrc->add("uniform vec2 uf_windowSpaceToClipSpaceTransform;" _CRLF);
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uniformOffsets.offset_windowSpaceToClipSpaceTransform = uniformCurrentOffset;
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uniformCurrentOffset += 8;
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}
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bool alphaTestEnable = decompilerContext->contextRegistersNew->SX_ALPHA_TEST_CONTROL.get_ALPHA_TEST_ENABLE();
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if (decompilerContext->shaderType == LatteConst::ShaderType::Pixel && alphaTestEnable)
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{
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uniformCurrentOffset = (uniformCurrentOffset + 3)&~3;
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shaderSrc->add("uniform float uf_alphaTestRef;" _CRLF);
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uniformOffsets.offset_alphaTestRef = uniformCurrentOffset;
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uniformCurrentOffset += 4;
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}
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if (decompilerContext->analyzer.outputPointSize && decompilerContext->analyzer.writesPointSize == false)
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{
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if ((decompilerContext->shaderType == LatteConst::ShaderType::Vertex && !decompilerContext->options->usesGeometryShader) ||
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decompilerContext->shaderType == LatteConst::ShaderType::Geometry)
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{
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uniformCurrentOffset = (uniformCurrentOffset + 3)&~3;
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shaderSrc->add("uniform float uf_pointSize;" _CRLF);
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uniformOffsets.offset_pointSize = uniformCurrentOffset;
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uniformCurrentOffset += 4;
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}
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}
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// define uf_fragCoordScale which holds the xy scale for render target resolution vs effective resolution
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if (shader->shaderType == LatteConst::ShaderType::Pixel)
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{
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uniformCurrentOffset = (uniformCurrentOffset + 7)&~7;
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shaderSrc->add("uniform vec2 uf_fragCoordScale;" _CRLF);
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uniformOffsets.offset_fragCoordScale = uniformCurrentOffset;
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uniformCurrentOffset += 8;
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}
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// provide scale factor for every texture that is accessed via texel coordinates (texelFetch)
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for (sint32 t = 0; t < LATTE_NUM_MAX_TEX_UNITS; t++)
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{
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if (decompilerContext->analyzer.texUnitUsesTexelCoordinates.test(t) == false)
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continue;
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uniformCurrentOffset = (uniformCurrentOffset + 7) & ~7;
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shaderSrc->addFmt("uniform vec2 uf_tex{}Scale;" _CRLF, t);
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uniformOffsets.offset_texScale[t] = uniformCurrentOffset;
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uniformCurrentOffset += 8;
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}
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// define uf_verticesPerInstance + uf_streamoutBufferBaseX
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if (decompilerContext->analyzer.useSSBOForStreamout &&
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(shader->shaderType == LatteConst::ShaderType::Vertex && decompilerContext->options->usesGeometryShader == false) ||
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(shader->shaderType == LatteConst::ShaderType::Geometry) )
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{
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shaderSrc->add("uniform int uf_verticesPerInstance;" _CRLF);
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uniformOffsets.offset_verticesPerInstance = uniformCurrentOffset;
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uniformCurrentOffset += 4;
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for (uint32 i = 0; i < LATTE_NUM_STREAMOUT_BUFFER; i++)
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{
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if (decompilerContext->output->streamoutBufferWriteMask[i])
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{
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shaderSrc->addFmt("uniform int uf_streamoutBufferBase{};" _CRLF, i);
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uniformOffsets.offset_streamoutBufferBase[i] = uniformCurrentOffset;
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uniformCurrentOffset += 4;
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}
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}
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}
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uniformOffsets.offset_endOfBlock = uniformCurrentOffset;
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}
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static void _emitUniformBuffers(LatteDecompilerShaderContext* decompilerContext)
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{
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auto shaderSrc = decompilerContext->shaderSource;
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// uniform buffer definition
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if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_FULL_CBANK)
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{
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for (uint32 i = 0; i < LATTE_NUM_MAX_UNIFORM_BUFFERS; i++)
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{
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if (!decompilerContext->analyzer.uniformBufferAccessTracker[i].HasAccess())
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continue;
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cemu_assert_debug(decompilerContext->output->resourceMappingGL.uniformBuffersBindingPoint[i] >= 0);
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cemu_assert_debug(decompilerContext->output->resourceMappingVK.uniformBuffersBindingPoint[i] >= 0);
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shaderSrc->addFmt("UNIFORM_BUFFER_LAYOUT({}, {}, {}) ", (sint32)decompilerContext->output->resourceMappingGL.uniformBuffersBindingPoint[i], (sint32)decompilerContext->output->resourceMappingVK.setIndex, (sint32)decompilerContext->output->resourceMappingVK.uniformBuffersBindingPoint[i]);
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shaderSrc->addFmt("uniform ubuff{}" _CRLF, i);
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shaderSrc->add("{" _CRLF);
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shaderSrc->addFmt("float4 ubuff{}[{}];" _CRLF, i, decompilerContext->analyzer.uniformBufferAccessTracker[i].DetermineSize(decompilerContext->shaderBaseHash, LATTE_GLSL_DYNAMIC_UNIFORM_BLOCK_SIZE));
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shaderSrc->add("};" _CRLF _CRLF);
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shaderSrc->add(_CRLF);
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}
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}
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else if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_REMAPPED)
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{
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// already generated in _emitUniformVariables
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}
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else if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_FULL_CFILE)
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{
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// already generated in _emitUniformVariables
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}
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else if (decompilerContext->shader->uniformMode == LATTE_DECOMPILER_UNIFORM_MODE_NONE)
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{
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// no uniforms used
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}
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else
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{
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cemu_assert_debug(false);
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}
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}
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static void _emitTextureDefinitions(LatteDecompilerShaderContext* shaderContext)
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{
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auto src = shaderContext->shaderSource;
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// texture sampler definition
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for (sint32 i = 0; i < LATTE_NUM_MAX_TEX_UNITS; i++)
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{
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if (!shaderContext->output->textureUnitMask[i])
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continue;
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if (shaderContext->shader->textureIsIntegerFormat[i])
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{
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// integer samplers
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if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_1D)
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src->add("texture1d<uint>");
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_2D || shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_2D_MSAA)
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src->add("texture2d<uint>");
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else
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cemu_assert_unimplemented();
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}
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_2D || shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_2D_MSAA)
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src->add("texture2d<float>");
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_1D)
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src->add("texture1d<float>");
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_2D_ARRAY)
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src->add("texture2d_array<float>");
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_CUBEMAP)
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src->add("texturecube_array<float>");
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else if (shaderContext->shader->textureUnitDim[i] == Latte::E_DIM::DIM_3D)
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src->add("texture3d<float>");
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else
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{
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cemu_assert_unimplemented();
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}
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src->addFmt(" tex{} [[texture({})]], ", i, shaderContext->output->resourceMappingGL.textureUnitToBindingPoint[i]);
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src->addFmt("sampler samplr{} [[sampler({})]], ", i, shaderContext->output->resourceMappingGL.textureUnitToBindingPoint[i]);
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}
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}
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static void _emitAttributes(LatteDecompilerShaderContext* decompilerContext)
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{
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auto shaderSrc = decompilerContext->shaderSource;
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if (decompilerContext->shader->shaderType == LatteConst::ShaderType::Vertex)
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{
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// attribute inputs
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for (uint32 i = 0; i < LATTE_NUM_MAX_ATTRIBUTE_LOCATIONS; i++)
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{
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if (decompilerContext->analyzer.inputAttributSemanticMask[i])
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{
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cemu_assert_debug(decompilerContext->output->resourceMappingGL.attributeMapping[i] >= 0);
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cemu_assert_debug(decompilerContext->output->resourceMappingVK.attributeMapping[i] >= 0);
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cemu_assert_debug(decompilerContext->output->resourceMappingGL.attributeMapping[i] == decompilerContext->output->resourceMappingVK.attributeMapping[i]);
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shaderSrc->addFmt("ATTR_LAYOUT({}, {}) in uvec4 attrDataSem{};" _CRLF, (sint32)decompilerContext->output->resourceMappingVK.setIndex, (sint32)decompilerContext->output->resourceMappingVK.attributeMapping[i], i);
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}
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}
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}
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}
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static void _emitVSExports(LatteDecompilerShaderContext* shaderContext)
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{
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auto* src = shaderContext->shaderSource;
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LatteShaderPSInputTable* psInputTable = LatteSHRC_GetPSInputTable();
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auto parameterMask = shaderContext->shader->outputParameterMask;
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for (uint32 i = 0; i < 32; i++)
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{
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if ((parameterMask&(1 << i)) == 0)
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continue;
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uint32 vsSemanticId = _getVertexShaderOutParamSemanticId(shaderContext->contextRegisters, i);
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if (vsSemanticId > LATTE_ANALYZER_IMPORT_INDEX_PARAM_MAX)
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continue;
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// get import based on semanticId
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sint32 psInputIndex = -1;
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for (sint32 f = 0; f < psInputTable->count; f++)
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{
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if (psInputTable->import[f].semanticId == vsSemanticId)
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{
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psInputIndex = f;
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break;
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}
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}
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if (psInputIndex == -1)
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continue; // no ps input
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src->addFmt("layout(location = {}) ", psInputIndex);
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if (psInputTable->import[psInputIndex].isFlat)
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src->add("flat ");
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if (psInputTable->import[psInputIndex].isNoPerspective)
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src->add("noperspective ");
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src->add("out");
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src->addFmt(" vec4 passParameterSem{};" _CRLF, psInputTable->import[psInputIndex].semanticId);
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}
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}
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static void _emitPSImports(LatteDecompilerShaderContext* shaderContext)
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{
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auto* src = shaderContext->shaderSource;
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LatteShaderPSInputTable* psInputTable = LatteSHRC_GetPSInputTable();
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for (sint32 i = 0; i < psInputTable->count; i++)
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{
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if (psInputTable->import[i].semanticId > LATTE_ANALYZER_IMPORT_INDEX_PARAM_MAX)
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continue;
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src->addFmt("layout(location = {}) ", i);
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if (psInputTable->import[i].isFlat)
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src->add("flat ");
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if (psInputTable->import[i].isNoPerspective)
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src->add("noperspective ");
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src->add("in");
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src->addFmt(" vec4 passParameterSem{};" _CRLF, psInputTable->import[i].semanticId);
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}
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}
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static void _emitMisc(LatteDecompilerShaderContext* decompilerContext)
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{
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auto src = decompilerContext->shaderSource;
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// per-vertex output (VS or GS)
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if ((decompilerContext->shaderType == LatteConst::ShaderType::Vertex && !decompilerContext->options->usesGeometryShader) ||
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(decompilerContext->shaderType == LatteConst::ShaderType::Geometry))
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{
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src->add("out gl_PerVertex" _CRLF);
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src->add("{" _CRLF);
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src->add(" vec4 gl_Position;" _CRLF);
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if (decompilerContext->analyzer.outputPointSize)
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src->add(" float gl_PointSize;" _CRLF);
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src->add("};" _CRLF);
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}
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// varyings (variables passed from vertex to pixel shader, only if geometry stage is disabled
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if (decompilerContext->options->usesGeometryShader == false)
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{
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex)
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{
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_emitVSExports(decompilerContext);
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}
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else if (decompilerContext->shaderType == LatteConst::ShaderType::Pixel)
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{
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_emitPSImports(decompilerContext);
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}
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}
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else
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{
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex || decompilerContext->shaderType == LatteConst::ShaderType::Geometry)
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{
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// parameters shared between vertex shader and geometry shader
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src->add("V2G_LAYOUT ");
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex)
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src->add("out Vertex" _CRLF);
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else if (decompilerContext->shaderType == LatteConst::ShaderType::Geometry)
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src->add("in Vertex" _CRLF);
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src->add("{" _CRLF);
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uint32 ringParameterCountVS2GS = 0;
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex)
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{
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ringParameterCountVS2GS = decompilerContext->shader->ringParameterCount;
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}
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else
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{
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ringParameterCountVS2GS = decompilerContext->shader->ringParameterCountFromPrevStage;
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}
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for (uint32 f = 0; f < ringParameterCountVS2GS; f++)
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src->addFmt(" ivec4 passV2GParameter{};" _CRLF, f);
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex)
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src->add("}v2g;" _CRLF);
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else if (decompilerContext->shaderType == LatteConst::ShaderType::Geometry)
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src->add("}v2g[];" _CRLF);
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}
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if (decompilerContext->shaderType == LatteConst::ShaderType::Geometry)
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{
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// parameters shared between geometry and pixel shader
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uint32 ringItemSize = decompilerContext->contextRegisters[mmSQ_GSVS_RING_ITEMSIZE] & 0x7FFF;
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if ((ringItemSize & 0xF) != 0)
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debugBreakpoint();
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if (((decompilerContext->contextRegisters[mmSQ_GSVS_RING_ITEMSIZE] & 0x7FFF) & 0xF) != 0)
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debugBreakpoint();
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for (sint32 p = 0; p < decompilerContext->parsedGSCopyShader->numParam; p++)
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{
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if (decompilerContext->parsedGSCopyShader->paramMapping[p].exportType != 2)
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continue;
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src->addFmt("layout(location = {}) out vec4 passG2PParameter{};" _CRLF, decompilerContext->parsedGSCopyShader->paramMapping[p].exportParam & 0x7F, (sint32)decompilerContext->parsedGSCopyShader->paramMapping[p].exportParam);
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}
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}
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else if (decompilerContext->shaderType == LatteConst::ShaderType::Pixel)
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{
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// pixel shader with geometry shader
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LatteShaderPSInputTable* psInputTable = LatteSHRC_GetPSInputTable();
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for (sint32 i = 0; i < psInputTable->count; i++)
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{
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if (psInputTable->import[i].semanticId > LATTE_ANALYZER_IMPORT_INDEX_PARAM_MAX)
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continue;
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uint32 location = psInputTable->import[i].semanticId & 0x7F; // todo - the range above 128 has special meaning?
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src->addFmt("layout(location = {}) ", location);
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if (psInputTable->import[i].isFlat)
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src->add("flat ");
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if (psInputTable->import[i].isNoPerspective)
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src->add("noperspective ");
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if (decompilerContext->shaderType == LatteConst::ShaderType::Vertex)
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src->add("out");
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else if (decompilerContext->shaderType == LatteConst::ShaderType::Pixel)
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src->add("in");
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else
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debugBreakpoint();
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src->addFmt(" vec4 passG2PParameter{};" _CRLF, (sint32)location);
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}
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}
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}
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// output defines
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if (decompilerContext->shaderType == LatteConst::ShaderType::Pixel)
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{
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// generate pixel outputs for pixel shader
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for (uint32 i = 0; i < LATTE_NUM_COLOR_TARGET; i++)
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{
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if ((decompilerContext->shader->pixelColorOutputMask&(1 << i)) != 0)
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{
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src->addFmt("layout(location = {}) out vec4 passPixelColor{};" _CRLF, i, i);
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}
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}
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}
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// streamout buffer (transform feedback)
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if ((decompilerContext->shaderType == LatteConst::ShaderType::Vertex || decompilerContext->shaderType == LatteConst::ShaderType::Geometry) && decompilerContext->analyzer.hasStreamoutEnable)
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{
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if (decompilerContext->options->useTFViaSSBO)
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{
|
||||
if (decompilerContext->analyzer.useSSBOForStreamout && decompilerContext->analyzer.hasStreamoutWrite)
|
||||
{
|
||||
src->addFmt("layout(set = {}, binding = {}) buffer StreamoutBuffer" _CRLF, decompilerContext->output->resourceMappingVK.setIndex, decompilerContext->output->resourceMappingVK.getTFStorageBufferBindingPoint());
|
||||
src->add("{" _CRLF);
|
||||
src->add("int sb_buffer[];" _CRLF);
|
||||
src->add("};" _CRLF);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
sint32 locationOffset = 0; // glslang wants a location for xfb outputs
|
||||
for (uint32 i = 0; i < LATTE_NUM_STREAMOUT_BUFFER; i++)
|
||||
{
|
||||
if (!decompilerContext->output->streamoutBufferWriteMask[i])
|
||||
continue;
|
||||
uint32 bufferStride = decompilerContext->output->streamoutBufferStride[i];
|
||||
src->addFmt("XFB_BLOCK_LAYOUT({}, {}, {}) out XfbBlock{} " _CRLF, i, bufferStride, locationOffset, i);
|
||||
src->add("{" _CRLF);
|
||||
src->addFmt("layout(xfb_buffer = {}, xfb_offset = 0) int sb{}[{}];" _CRLF, i, i, decompilerContext->output->streamoutBufferStride[i] / 4);
|
||||
src->add("};" _CRLF);
|
||||
locationOffset += (decompilerContext->output->streamoutBufferStride[i] / 4);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void emitHeader(LatteDecompilerShaderContext* decompilerContext)
|
||||
{
|
||||
const bool dump_shaders_enabled = ActiveSettings::DumpShadersEnabled();
|
||||
if(dump_shaders_enabled)
|
||||
decompilerContext->shaderSource->add("// start of shader inputs/outputs, predetermined by Cemu. Do not touch" _CRLF);
|
||||
// uniform variables
|
||||
_emitUniformVariables(decompilerContext, decompilerContext->output->uniformOffsetsVK);
|
||||
// uniform buffers
|
||||
_emitUniformBuffers(decompilerContext);
|
||||
// textures
|
||||
_emitTextureDefinitions(decompilerContext);
|
||||
// attributes
|
||||
_emitAttributes(decompilerContext);
|
||||
// misc stuff
|
||||
_emitMisc(decompilerContext);
|
||||
|
||||
if (dump_shaders_enabled)
|
||||
decompilerContext->shaderSource->add("// end of shader inputs/outputs" _CRLF);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue