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https://github.com/doitsujin/dxvk.git
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[dxgi] Re-implement presentation shaders in GLSL
This commit is contained in:
Philip Rebohle
parent
f6c6f5eb1f
commit
41132b8c13
@ -2,6 +2,9 @@
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#include "../spirv/spirv_module.h"
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#include <dxgi_presenter_frag.h>
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#include <dxgi_presenter_vert.h>
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namespace dxvk {
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DxgiPresenter::DxgiPresenter(
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@ -342,190 +345,17 @@ namespace dxvk {
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Rc<DxvkShader> DxgiPresenter::createVertexShader() {
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SpirvModule module;
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const SpirvCodeBuffer codeBuffer(dxgi_presenter_vert);
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// Set up basic vertex shader capabilities
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module.enableCapability(spv::CapabilityShader);
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module.setMemoryModel(
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spv::AddressingModelLogical,
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spv::MemoryModelGLSL450);
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// ID of the entry point (function)
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uint32_t entryPointId = module.allocateId();
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// Data type definitions
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uint32_t typeVoid = module.defVoidType();
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uint32_t typeU32 = module.defIntType(32, 0);
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uint32_t typeF32 = module.defFloatType(32);
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uint32_t typeVec2 = module.defVectorType(typeF32, 2);
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uint32_t typeVec4 = module.defVectorType(typeF32, 4);
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uint32_t typeVec4Arr4 = module.defArrayType(typeVec4, module.constu32(4));
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uint32_t typeFn = module.defFunctionType(typeVoid, 0, nullptr);
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// Pointer type definitions
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uint32_t ptrInputU32 = module.defPointerType(typeU32, spv::StorageClassInput);
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uint32_t ptrOutputVec2 = module.defPointerType(typeVec2, spv::StorageClassOutput);
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uint32_t ptrOutputVec4 = module.defPointerType(typeVec4, spv::StorageClassOutput);
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uint32_t ptrPrivateVec4 = module.defPointerType(typeVec4, spv::StorageClassPrivate);
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uint32_t ptrPrivateArr4 = module.defPointerType(typeVec4Arr4, spv::StorageClassPrivate);
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// Input variable: VertexIndex
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uint32_t inVertexId = module.newVar(
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ptrInputU32, spv::StorageClassInput);
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module.decorateBuiltIn(inVertexId, spv::BuiltInVertexIndex);
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// Output variable: Position
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uint32_t outPosition = module.newVar(
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ptrOutputVec4, spv::StorageClassOutput);
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module.decorateBuiltIn(outPosition, spv::BuiltInPosition);
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// Output variable: Texture coordinates
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uint32_t outTexCoord = module.newVar(
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ptrOutputVec2, spv::StorageClassOutput);
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module.decorateLocation(outTexCoord, 0);
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// Temporary variable: Vertex array
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uint32_t varVertexArray = module.newVar(
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ptrPrivateArr4, spv::StorageClassPrivate);
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// Scalar constants
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uint32_t constF32Zero = module.constf32( 0.0f);
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uint32_t constF32Half = module.constf32( 0.5f);
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uint32_t constF32Pos1 = module.constf32( 1.0f);
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uint32_t constF32Neg1 = module.constf32(-1.0f);
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// Vector constants
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uint32_t constVec2HalfIds[2] = { constF32Half, constF32Half };
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uint32_t constVec2Half = module.constComposite(typeVec2, 2, constVec2HalfIds);
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// Construct vertex array
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uint32_t vertexData[16] = {
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constF32Neg1, constF32Neg1, constF32Zero, constF32Pos1,
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constF32Neg1, constF32Pos1, constF32Zero, constF32Pos1,
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constF32Pos1, constF32Neg1, constF32Zero, constF32Pos1,
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constF32Pos1, constF32Pos1, constF32Zero, constF32Pos1,
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};
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uint32_t vertexConstants[4] = {
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module.constComposite(typeVec4, 4, vertexData + 0),
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module.constComposite(typeVec4, 4, vertexData + 4),
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module.constComposite(typeVec4, 4, vertexData + 8),
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module.constComposite(typeVec4, 4, vertexData + 12),
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};
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uint32_t vertexArray = module.constComposite(
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typeVec4Arr4, 4, vertexConstants);
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// Function header
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module.functionBegin(typeVoid, entryPointId, typeFn, spv::FunctionControlMaskNone);
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module.opLabel(module.allocateId());
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module.opStore(varVertexArray, vertexArray);
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// Load position of the current vertex
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uint32_t tmpVertexId = module.opLoad(typeU32, inVertexId);
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uint32_t tmpVertexPtr = module.opAccessChain(
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ptrPrivateVec4, varVertexArray, 1, &tmpVertexId);
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uint32_t tmpVertexPos = module.opLoad(typeVec4, tmpVertexPtr);
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module.opStore(outPosition, tmpVertexPos);
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// Compute texture coordinates
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uint32_t swizzleIndices[2] = { 0, 1 };
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uint32_t tmpTexCoord = module.opVectorShuffle(typeVec2,
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tmpVertexPos, tmpVertexPos, 2, swizzleIndices);
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tmpTexCoord = module.opFMul(typeVec2, tmpTexCoord, constVec2Half);
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tmpTexCoord = module.opFAdd(typeVec2, tmpTexCoord, constVec2Half);
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module.opStore(outTexCoord, tmpTexCoord);
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module.opReturn();
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module.functionEnd();
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// Register function entry point
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std::array<uint32_t, 3> interfaces = {
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inVertexId, outPosition, outTexCoord,
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};
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module.addEntryPoint(entryPointId, spv::ExecutionModelVertex,
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"main", interfaces.size(), interfaces.data());
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// Create the actual shader module
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return m_device->createShader(
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VK_SHADER_STAGE_VERTEX_BIT,
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0, nullptr, { 0u, 1u },
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module.compile());
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codeBuffer);
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}
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Rc<DxvkShader> DxgiPresenter::createFragmentShader() {
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SpirvModule module;
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module.enableCapability(spv::CapabilityShader);
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module.setMemoryModel(
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spv::AddressingModelLogical,
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spv::MemoryModelGLSL450);
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uint32_t entryPointId = module.allocateId();
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// Data type definitions
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uint32_t typeVoid = module.defVoidType();
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uint32_t typeF32 = module.defFloatType(32);
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uint32_t typeVec2 = module.defVectorType(typeF32, 2);
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uint32_t typeVec4 = module.defVectorType(typeF32, 4);
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uint32_t typeFn = module.defFunctionType(typeVoid, 0, nullptr);
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uint32_t typeSampler = module.defSamplerType();
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uint32_t typeTexture = module.defImageType(
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typeF32, spv::Dim2D, 0, 0, 0, 1, spv::ImageFormatUnknown);
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uint32_t typeSampledTex = module.defSampledImageType(typeTexture);
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// Pointer type definitions
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uint32_t ptrInputVec2 = module.defPointerType(typeVec2, spv::StorageClassInput);
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uint32_t ptrOutputVec4 = module.defPointerType(typeVec4, spv::StorageClassOutput);
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uint32_t ptrSampler = module.defPointerType(typeSampler, spv::StorageClassUniformConstant);
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uint32_t ptrTexture = module.defPointerType(typeTexture, spv::StorageClassUniformConstant);
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// Sampler
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uint32_t rcSampler = module.newVar(ptrSampler, spv::StorageClassUniformConstant);
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module.decorateDescriptorSet(rcSampler, 0);
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module.decorateBinding(rcSampler, BindingIds::Sampler);
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// Texture
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uint32_t rcTexture = module.newVar(ptrTexture, spv::StorageClassUniformConstant);
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module.decorateDescriptorSet(rcTexture, 0);
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module.decorateBinding(rcTexture, BindingIds::Texture);
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// Input variable: Texture coordinates
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uint32_t inTexCoord = module.newVar(
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ptrInputVec2, spv::StorageClassInput);
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module.decorateLocation(inTexCoord, 0);
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// Output variable: Final color
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uint32_t outColor = module.newVar(
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ptrOutputVec4, spv::StorageClassOutput);
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module.decorateLocation(outColor, 0);
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// Function header
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module.functionBegin(typeVoid, entryPointId, typeFn, spv::FunctionControlMaskNone);
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module.opLabel(module.allocateId());
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// Load texture coordinates
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module.opStore(outColor,
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module.opImageSampleImplicitLod(
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typeVec4,
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module.opSampledImage(
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typeSampledTex,
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module.opLoad(typeTexture, rcTexture),
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module.opLoad(typeSampler, rcSampler)),
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module.opLoad(typeVec2, inTexCoord),
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SpirvImageOperands()));
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module.opReturn();
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module.functionEnd();
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// Register function entry point
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std::array<uint32_t, 2> interfaces = { inTexCoord, outColor };
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module.addEntryPoint(entryPointId, spv::ExecutionModelFragment,
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"main", interfaces.size(), interfaces.data());
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const SpirvCodeBuffer codeBuffer(dxgi_presenter_frag);
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// Shader resource slots
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std::array<DxvkResourceSlot, 2> resourceSlots = {{
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@ -539,7 +369,7 @@ namespace dxvk {
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resourceSlots.size(),
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resourceSlots.data(),
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{ 1u, 1u },
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module.compile());
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codeBuffer);
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}
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}
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@ -1,3 +1,8 @@
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dxgi_shaders = files([
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'shaders/dxgi_presenter_frag.frag',
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'shaders/dxgi_presenter_vert.vert',
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])
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dxgi_src = [
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'dxgi_adapter.cpp',
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'dxgi_device.cpp',
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@ -9,7 +14,7 @@ dxgi_src = [
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'dxgi_swapchain.cpp',
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]
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dxgi_dll = shared_library('dxgi', dxgi_src,
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dxgi_dll = shared_library('dxgi', dxgi_src, glsl_generator.process(dxgi_shaders),
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name_prefix : '',
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link_with : [ util_lib ],
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dependencies : [ dxvk_dep ],
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11
src/dxgi/shaders/dxgi_presenter_frag.frag
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11
src/dxgi/shaders/dxgi_presenter_frag.frag
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@ -0,0 +1,11 @@
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#version 450
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layout(binding = 0) uniform sampler s_sampler;
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layout(binding = 1) uniform texture2D t_texture;
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layout(location = 0) in vec2 i_texcoord;
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layout(location = 0) out vec4 o_color;
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void main() {
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o_color = texture(sampler2D(t_texture, s_sampler), i_texcoord);
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}
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16
src/dxgi/shaders/dxgi_presenter_vert.vert
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16
src/dxgi/shaders/dxgi_presenter_vert.vert
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@ -0,0 +1,16 @@
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#version 450
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const vec4 g_vpos[4] = {
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vec4(-1.0f, -1.0f, 0.0f, 1.0f),
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vec4(-1.0f, 1.0f, 0.0f, 1.0f),
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vec4( 1.0f, -1.0f, 0.0f, 1.0f),
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vec4( 1.0f, 1.0f, 0.0f, 1.0f),
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};
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layout(location = 0) out vec2 o_texcoord;
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void main() {
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vec4 pos = g_vpos[gl_VertexIndex];
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o_texcoord = 0.5f + 0.5f * pos.xy;
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gl_Position = pos;
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}
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