Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1435 insertions, 0 deletions

diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/DynamicHLSL.cpp b/gfx/angle/checkout/src/libANGLE/renderer/d3d/DynamicHLSL.cpp
new file mode 100644
index 0000000000..4aeacc553f
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/DynamicHLSL.cpp
@@ -0,0 +1,1435 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// DynamicHLSL.cpp: Implementation for link and run-time HLSL generation
+//
+
+#include "libANGLE/renderer/d3d/DynamicHLSL.h"
+
+#include "common/string_utils.h"
+#include "common/utilities.h"
+#include "compiler/translator/blocklayoutHLSL.h"
+#include "libANGLE/Context.h"
+#include "libANGLE/Program.h"
+#include "libANGLE/Shader.h"
+#include "libANGLE/VaryingPacking.h"
+#include "libANGLE/formatutils.h"
+#include "libANGLE/renderer/d3d/ProgramD3D.h"
+#include "libANGLE/renderer/d3d/RendererD3D.h"
+#include "libANGLE/renderer/d3d/ShaderD3D.h"
+
+using namespace gl;
+
+namespace rx
+{
+
+namespace
+{
+
+const char *HLSLComponentTypeString(GLenum componentType)
+{
+    switch (componentType)
+    {
+        case GL_UNSIGNED_INT:
+            return "uint";
+        case GL_INT:
+            return "int";
+        case GL_UNSIGNED_NORMALIZED:
+        case GL_SIGNED_NORMALIZED:
+        case GL_FLOAT:
+            return "float";
+        default:
+            UNREACHABLE();
+            return "not-component-type";
+    }
+}
+
+void HLSLComponentTypeString(std::ostringstream &ostream, GLenum componentType, int componentCount)
+{
+    ostream << HLSLComponentTypeString(componentType);
+    if (componentCount > 1)
+    {
+        ostream << componentCount;
+    }
+}
+
+const char *HLSLMatrixTypeString(GLenum type)
+{
+    switch (type)
+    {
+        case GL_FLOAT_MAT2:
+            return "float2x2";
+        case GL_FLOAT_MAT3:
+            return "float3x3";
+        case GL_FLOAT_MAT4:
+            return "float4x4";
+        case GL_FLOAT_MAT2x3:
+            return "float2x3";
+        case GL_FLOAT_MAT3x2:
+            return "float3x2";
+        case GL_FLOAT_MAT2x4:
+            return "float2x4";
+        case GL_FLOAT_MAT4x2:
+            return "float4x2";
+        case GL_FLOAT_MAT3x4:
+            return "float3x4";
+        case GL_FLOAT_MAT4x3:
+            return "float4x3";
+        default:
+            UNREACHABLE();
+            return "not-matrix-type";
+    }
+}
+
+void HLSLTypeString(std::ostringstream &ostream, GLenum type)
+{
+    if (gl::IsMatrixType(type))
+    {
+        ostream << HLSLMatrixTypeString(type);
+        return;
+    }
+
+    HLSLComponentTypeString(ostream, gl::VariableComponentType(type),
+                            gl::VariableComponentCount(type));
+}
+
+const PixelShaderOutputVariable *FindOutputAtLocation(
+    const std::vector<PixelShaderOutputVariable> &outputVariables,
+    unsigned int location,
+    size_t index = 0)
+{
+    for (auto &outputVar : outputVariables)
+    {
+        if (outputVar.outputLocation == location && outputVar.outputIndex == index)
+        {
+            return &outputVar;
+        }
+    }
+
+    return nullptr;
+}
+
+void WriteArrayString(std::ostringstream &strstr, unsigned int i)
+{
+    static_assert(GL_INVALID_INDEX == UINT_MAX,
+                  "GL_INVALID_INDEX must be equal to the max unsigned int.");
+    if (i == UINT_MAX)
+    {
+        return;
+    }
+
+    strstr << "[";
+    strstr << i;
+    strstr << "]";
+}
+
+constexpr const char *VERTEX_ATTRIBUTE_STUB_STRING      = "@@ VERTEX ATTRIBUTES @@";
+constexpr const char *VERTEX_OUTPUT_STUB_STRING         = "@@ VERTEX OUTPUT @@";
+constexpr const char *PIXEL_OUTPUT_STUB_STRING          = "@@ PIXEL OUTPUT @@";
+constexpr const char *PIXEL_MAIN_PARAMETERS_STUB_STRING = "@@ PIXEL MAIN PARAMETERS @@";
+constexpr const char *MAIN_PROLOGUE_STUB_STRING         = "@@ MAIN PROLOGUE @@";
+}  // anonymous namespace
+
+// BuiltinInfo implementation
+
+BuiltinInfo::BuiltinInfo()  = default;
+BuiltinInfo::~BuiltinInfo() = default;
+
+// DynamicHLSL implementation
+
+DynamicHLSL::DynamicHLSL(RendererD3D *const renderer) : mRenderer(renderer) {}
+
+std::string DynamicHLSL::generateVertexShaderForInputLayout(
+    const std::string &sourceShader,
+    const InputLayout &inputLayout,
+    const std::vector<sh::Attribute> &shaderAttributes) const
+{
+    std::ostringstream structStream;
+    std::ostringstream initStream;
+
+    structStream << "struct VS_INPUT\n"
+                 << "{\n";
+
+    int semanticIndex       = 0;
+    unsigned int inputIndex = 0;
+
+    // If gl_PointSize is used in the shader then pointsprites rendering is expected.
+    // If the renderer does not support Geometry shaders then Instanced PointSprite emulation
+    // must be used.
+    bool usesPointSize = sourceShader.find("GL_USES_POINT_SIZE") != std::string::npos;
+    bool useInstancedPointSpriteEmulation =
+        usesPointSize && mRenderer->getFeatures().useInstancedPointSpriteEmulation.enabled;
+
+    // Instanced PointSprite emulation requires additional entries in the
+    // VS_INPUT structure to support the vertices that make up the quad vertices.
+    // These values must be in sync with the cooresponding values added during inputlayout creation
+    // in InputLayoutCache::applyVertexBuffers().
+    //
+    // The additional entries must appear first in the VS_INPUT layout because
+    // Windows Phone 8 era devices require per vertex data to physically come
+    // before per instance data in the shader.
+    if (useInstancedPointSpriteEmulation)
+    {
+        structStream << "    float3 spriteVertexPos : SPRITEPOSITION0;\n"
+                     << "    float2 spriteTexCoord : SPRITETEXCOORD0;\n";
+    }
+
+    for (size_t attributeIndex = 0; attributeIndex < shaderAttributes.size(); ++attributeIndex)
+    {
+        const sh::Attribute &shaderAttribute = shaderAttributes[attributeIndex];
+        if (!shaderAttribute.name.empty())
+        {
+            ASSERT(inputIndex < MAX_VERTEX_ATTRIBS);
+            angle::FormatID vertexFormatID =
+                inputIndex < inputLayout.size() ? inputLayout[inputIndex] : angle::FormatID::NONE;
+
+            // HLSL code for input structure
+            if (IsMatrixType(shaderAttribute.type))
+            {
+                // Matrix types are always transposed
+                structStream << "    "
+                             << HLSLMatrixTypeString(TransposeMatrixType(shaderAttribute.type));
+            }
+            else
+            {
+                GLenum componentType = mRenderer->getVertexComponentType(vertexFormatID);
+
+                if (shaderAttribute.name == "gl_InstanceID" ||
+                    shaderAttribute.name == "gl_VertexID")
+                {
+                    // The input types of the instance ID and vertex ID in HLSL (uint) differs from
+                    // the ones in ESSL (int).
+                    structStream << " uint";
+                }
+                else
+                {
+                    structStream << "    ";
+                    HLSLComponentTypeString(structStream, componentType,
+                                            VariableComponentCount(shaderAttribute.type));
+                }
+            }
+
+            structStream << " " << DecorateVariable(shaderAttribute.name) << " : ";
+
+            if (shaderAttribute.name == "gl_InstanceID")
+            {
+                structStream << "SV_InstanceID";
+            }
+            else if (shaderAttribute.name == "gl_VertexID")
+            {
+                structStream << "SV_VertexID";
+            }
+            else
+            {
+                structStream << "TEXCOORD" << semanticIndex;
+                semanticIndex += VariableRegisterCount(shaderAttribute.type);
+            }
+
+            structStream << ";\n";
+
+            // HLSL code for initialization
+            initStream << "    " << DecorateVariable(shaderAttribute.name) << " = ";
+
+            // Mismatched vertex attribute to vertex input may result in an undefined
+            // data reinterpretation (eg for pure integer->float, float->pure integer)
+            // TODO: issue warning with gl debug info extension, when supported
+            if (IsMatrixType(shaderAttribute.type) ||
+                (mRenderer->getVertexConversionType(vertexFormatID) & VERTEX_CONVERT_GPU) != 0)
+            {
+                GenerateAttributeConversionHLSL(vertexFormatID, shaderAttribute, initStream);
+            }
+            else
+            {
+                initStream << "input." << DecorateVariable(shaderAttribute.name);
+            }
+
+            if (shaderAttribute.name == "gl_VertexID")
+            {
+                // dx_VertexID contains the firstVertex offset
+                initStream << " + dx_VertexID";
+            }
+
+            initStream << ";\n";
+
+            inputIndex += VariableRowCount(TransposeMatrixType(shaderAttribute.type));
+        }
+    }
+
+    structStream << "};\n"
+                    "\n"
+                    "void initAttributes(VS_INPUT input)\n"
+                    "{\n"
+                 << initStream.str() << "}\n";
+
+    std::string vertexHLSL(sourceShader);
+
+    bool success =
+        angle::ReplaceSubstring(&vertexHLSL, VERTEX_ATTRIBUTE_STUB_STRING, structStream.str());
+    ASSERT(success);
+
+    return vertexHLSL;
+}
+
+std::string DynamicHLSL::generatePixelShaderForOutputSignature(
+    const std::string &sourceShader,
+    const std::vector<PixelShaderOutputVariable> &outputVariables,
+    bool usesFragDepth,
+    const std::vector<GLenum> &outputLayout) const
+{
+    const int shaderModel      = mRenderer->getMajorShaderModel();
+    std::string targetSemantic = (shaderModel >= 4) ? "SV_TARGET" : "COLOR";
+    std::string depthSemantic  = (shaderModel >= 4) ? "SV_Depth" : "DEPTH";
+
+    std::ostringstream declarationStream;
+    std::ostringstream copyStream;
+
+    declarationStream << "struct PS_OUTPUT\n"
+                         "{\n";
+
+    size_t numOutputs = outputLayout.size();
+
+    // Workaround for HLSL 3.x: We can't do a depth/stencil only render, the runtime will complain.
+    if (numOutputs == 0 && (shaderModel == 3 || !mRenderer->getShaderModelSuffix().empty()))
+    {
+        numOutputs = 1u;
+    }
+    const PixelShaderOutputVariable defaultOutput(GL_FLOAT_VEC4, "dummy", "float4(0, 0, 0, 1)", 0,
+                                                  0);
+    size_t outputIndex = 0;
+
+    for (size_t layoutIndex = 0; layoutIndex < numOutputs; ++layoutIndex)
+    {
+        GLenum binding = outputLayout.empty() ? GL_COLOR_ATTACHMENT0 : outputLayout[layoutIndex];
+
+        if (binding != GL_NONE)
+        {
+            unsigned int location = (binding - GL_COLOR_ATTACHMENT0);
+            outputIndex =
+                layoutIndex > 0 && binding == outputLayout[layoutIndex - 1] ? outputIndex + 1 : 0;
+
+            const PixelShaderOutputVariable *outputVariable =
+                outputLayout.empty() ? &defaultOutput
+                                     : FindOutputAtLocation(outputVariables, location, outputIndex);
+
+            // OpenGL ES 3.0 spec $4.2.1
+            // If [...] not all user-defined output variables are written, the values of fragment
+            // colors corresponding to unwritten variables are similarly undefined.
+            if (outputVariable)
+            {
+                declarationStream << "    ";
+                HLSLTypeString(declarationStream, outputVariable->type);
+                declarationStream << " " << outputVariable->name << " : " << targetSemantic
+                                  << static_cast<int>(layoutIndex) << ";\n";
+
+                copyStream << "    output." << outputVariable->name << " = "
+                           << outputVariable->source << ";\n";
+            }
+        }
+    }
+
+    if (usesFragDepth)
+    {
+        declarationStream << "    float gl_Depth : " << depthSemantic << ";\n";
+        copyStream << "    output.gl_Depth = gl_Depth; \n";
+    }
+
+    declarationStream << "};\n"
+                         "\n"
+                         "PS_OUTPUT generateOutput()\n"
+                         "{\n"
+                         "    PS_OUTPUT output;\n"
+                      << copyStream.str()
+                      << "    return output;\n"
+                         "}\n";
+
+    std::string pixelHLSL(sourceShader);
+
+    bool success =
+        angle::ReplaceSubstring(&pixelHLSL, PIXEL_OUTPUT_STUB_STRING, declarationStream.str());
+    ASSERT(success);
+
+    return pixelHLSL;
+}
+
+std::string DynamicHLSL::generateComputeShaderForImage2DBindSignature(
+    const d3d::Context *context,
+    ProgramD3D &programD3D,
+    const gl::ProgramState &programData,
+    std::vector<sh::Uniform> &image2DUniforms,
+    const gl::ImageUnitTextureTypeMap &image2DBindLayout) const
+{
+    std::string computeHLSL(
+        programData.getAttachedShader(ShaderType::Compute)->getTranslatedSource());
+
+    if (image2DUniforms.empty())
+    {
+        return computeHLSL;
+    }
+
+    return GenerateComputeShaderForImage2DBindSignature(context, programD3D, programData,
+                                                        image2DUniforms, image2DBindLayout);
+}
+
+void DynamicHLSL::generateVaryingLinkHLSL(const VaryingPacking &varyingPacking,
+                                          const BuiltinInfo &builtins,
+                                          bool programUsesPointSize,
+                                          std::ostringstream &hlslStream) const
+{
+    ASSERT(builtins.dxPosition.enabled);
+    hlslStream << "{\n"
+               << "    float4 dx_Position : " << builtins.dxPosition.str() << ";\n";
+
+    if (builtins.glPosition.enabled)
+    {
+        hlslStream << "    float4 gl_Position : " << builtins.glPosition.str() << ";\n";
+    }
+
+    if (builtins.glFragCoord.enabled)
+    {
+        hlslStream << "    float4 gl_FragCoord : " << builtins.glFragCoord.str() << ";\n";
+    }
+
+    if (builtins.glPointCoord.enabled)
+    {
+        hlslStream << "    float2 gl_PointCoord : " << builtins.glPointCoord.str() << ";\n";
+    }
+
+    if (builtins.glPointSize.enabled)
+    {
+        hlslStream << "    float gl_PointSize : " << builtins.glPointSize.str() << ";\n";
+    }
+
+    if (builtins.glViewIDOVR.enabled)
+    {
+        hlslStream << "    nointerpolation uint gl_ViewID_OVR : " << builtins.glViewIDOVR.str()
+                   << ";\n";
+    }
+
+    std::string varyingSemantic =
+        GetVaryingSemantic(mRenderer->getMajorShaderModel(), programUsesPointSize);
+
+    const auto &registerInfos = varyingPacking.getRegisterList();
+    for (GLuint registerIndex = 0u; registerIndex < registerInfos.size(); ++registerIndex)
+    {
+        const PackedVaryingRegister &registerInfo = registerInfos[registerIndex];
+        const auto &varying                       = *registerInfo.packedVarying->varying;
+        ASSERT(!varying.isStruct());
+
+        // TODO: Add checks to ensure D3D interpolation modifiers don't result in too many
+        // registers being used.
+        // For example, if there are N registers, and we have N vec3 varyings and 1 float
+        // varying, then D3D will pack them into N registers.
+        // If the float varying has the 'nointerpolation' modifier on it then we would need
+        // N + 1 registers, and D3D compilation will fail.
+
+        switch (registerInfo.packedVarying->interpolation)
+        {
+            case sh::INTERPOLATION_SMOOTH:
+                hlslStream << "    ";
+                break;
+            case sh::INTERPOLATION_FLAT:
+                hlslStream << "    nointerpolation ";
+                break;
+            case sh::INTERPOLATION_CENTROID:
+                hlslStream << "    centroid ";
+                break;
+            default:
+                UNREACHABLE();
+        }
+
+        GLenum transposedType = gl::TransposeMatrixType(varying.type);
+        GLenum componentType  = gl::VariableComponentType(transposedType);
+        int columnCount       = gl::VariableColumnCount(transposedType);
+        HLSLComponentTypeString(hlslStream, componentType, columnCount);
+        hlslStream << " v" << registerIndex << " : " << varyingSemantic << registerIndex << ";\n";
+    }
+
+    // Note that the following outputs need to be declared after the others. They are not included
+    // in pixel shader inputs even when they are in vertex/geometry shader outputs, and the pixel
+    // shader input struct must be a prefix of the vertex/geometry shader output struct.
+
+    if (builtins.glViewportIndex.enabled)
+    {
+        hlslStream << "    nointerpolation uint gl_ViewportIndex : "
+                   << builtins.glViewportIndex.str() << ";\n";
+    }
+
+    if (builtins.glLayer.enabled)
+    {
+        hlslStream << "    nointerpolation uint gl_Layer : " << builtins.glLayer.str() << ";\n";
+    }
+
+    hlslStream << "};\n";
+}
+
+void DynamicHLSL::generateShaderLinkHLSL(const gl::Caps &caps,
+                                         const gl::ProgramState &programData,
+                                         const ProgramD3DMetadata &programMetadata,
+                                         const VaryingPacking &varyingPacking,
+                                         const BuiltinVaryingsD3D &builtinsD3D,
+                                         gl::ShaderMap<std::string> *shaderHLSL) const
+{
+    ASSERT(shaderHLSL);
+    ASSERT((*shaderHLSL)[gl::ShaderType::Vertex].empty() &&
+           (*shaderHLSL)[gl::ShaderType::Fragment].empty());
+
+    gl::Shader *vertexShaderGL      = programData.getAttachedShader(ShaderType::Vertex);
+    gl::Shader *fragmentShaderGL    = programData.getAttachedShader(ShaderType::Fragment);
+    const ShaderD3D *fragmentShader = GetImplAs<ShaderD3D>(fragmentShaderGL);
+    const int shaderModel           = mRenderer->getMajorShaderModel();
+
+    // usesViewScale() isn't supported in the D3D9 renderer
+    ASSERT(shaderModel >= 4 || !programMetadata.usesViewScale());
+
+    bool useInstancedPointSpriteEmulation =
+        programMetadata.usesPointSize() &&
+        mRenderer->getFeatures().useInstancedPointSpriteEmulation.enabled;
+
+    // Validation done in the compiler
+    ASSERT(!fragmentShader->usesFragColor() || !fragmentShader->usesFragData());
+
+    std::ostringstream vertexStream;
+    vertexStream << "struct VS_OUTPUT\n";
+    const auto &vertexBuiltins = builtinsD3D[gl::ShaderType::Vertex];
+    generateVaryingLinkHLSL(varyingPacking, vertexBuiltins, builtinsD3D.usesPointSize(),
+                            vertexStream);
+
+    // Instanced PointSprite emulation requires additional entries originally generated in the
+    // GeometryShader HLSL. These include pointsize clamp values.
+    if (useInstancedPointSpriteEmulation)
+    {
+        vertexStream << "static float minPointSize = " << static_cast<int>(caps.minAliasedPointSize)
+                     << ".0f;\n"
+                     << "static float maxPointSize = " << static_cast<int>(caps.maxAliasedPointSize)
+                     << ".0f;\n";
+    }
+
+    std::ostringstream vertexGenerateOutput;
+    vertexGenerateOutput << "VS_OUTPUT generateOutput(VS_INPUT input)\n"
+                         << "{\n"
+                         << "    VS_OUTPUT output;\n";
+
+    if (vertexBuiltins.glPosition.enabled)
+    {
+        vertexGenerateOutput << "    output.gl_Position = gl_Position;\n";
+    }
+
+    if (vertexBuiltins.glViewIDOVR.enabled)
+    {
+        vertexGenerateOutput << "    output.gl_ViewID_OVR = ViewID_OVR;\n";
+    }
+    if (programMetadata.hasANGLEMultiviewEnabled() && programMetadata.canSelectViewInVertexShader())
+    {
+        ASSERT(vertexBuiltins.glViewportIndex.enabled && vertexBuiltins.glLayer.enabled);
+        vertexGenerateOutput << "    if (multiviewSelectViewportIndex)\n"
+                             << "    {\n"
+                             << "         output.gl_ViewportIndex = ViewID_OVR;\n"
+                             << "    } else {\n"
+                             << "         output.gl_ViewportIndex = 0;\n"
+                             << "         output.gl_Layer = ViewID_OVR;\n"
+                             << "    }\n";
+    }
+
+    // On D3D9 or D3D11 Feature Level 9, we need to emulate large viewports using dx_ViewAdjust.
+    if (shaderModel >= 4 && mRenderer->getShaderModelSuffix() == "")
+    {
+        vertexGenerateOutput << "    output.dx_Position.x = gl_Position.x;\n";
+
+        if (programMetadata.usesViewScale())
+        {
+            // This code assumes that dx_ViewScale.y = -1.0f when rendering to texture, and +1.0f
+            // when rendering to the default framebuffer. No other values are valid.
+            vertexGenerateOutput << "    output.dx_Position.y = dx_ViewScale.y * gl_Position.y;\n";
+        }
+        else
+        {
+            vertexGenerateOutput << "    output.dx_Position.y = - gl_Position.y;\n";
+        }
+
+        vertexGenerateOutput
+            << "    output.dx_Position.z = (gl_Position.z + gl_Position.w) * 0.5;\n"
+            << "    output.dx_Position.w = gl_Position.w;\n";
+    }
+    else
+    {
+        vertexGenerateOutput << "    output.dx_Position.x = gl_Position.x * dx_ViewAdjust.z + "
+                                "dx_ViewAdjust.x * gl_Position.w;\n";
+
+        // If usesViewScale() is true and we're using the D3D11 renderer via Feature Level 9_*,
+        // then we need to multiply the gl_Position.y by the viewScale.
+        // usesViewScale() isn't supported when using the D3D9 renderer.
+        if (programMetadata.usesViewScale() &&
+            (shaderModel >= 4 && mRenderer->getShaderModelSuffix() != ""))
+        {
+            vertexGenerateOutput << "    output.dx_Position.y = dx_ViewScale.y * (gl_Position.y * "
+                                    "dx_ViewAdjust.w + dx_ViewAdjust.y * gl_Position.w);\n";
+        }
+        else
+        {
+            vertexGenerateOutput
+                << "    output.dx_Position.y = -(gl_Position.y * dx_ViewAdjust.w + "
+                   "dx_ViewAdjust.y * gl_Position.w);\n";
+        }
+
+        vertexGenerateOutput
+            << "    output.dx_Position.z = (gl_Position.z + gl_Position.w) * 0.5;\n"
+            << "    output.dx_Position.w = gl_Position.w;\n";
+    }
+
+    // We don't need to output gl_PointSize if we use are emulating point sprites via instancing.
+    if (vertexBuiltins.glPointSize.enabled)
+    {
+        vertexGenerateOutput << "    output.gl_PointSize = gl_PointSize;\n";
+    }
+
+    if (vertexBuiltins.glFragCoord.enabled)
+    {
+        vertexGenerateOutput << "    output.gl_FragCoord = gl_Position;\n";
+    }
+
+    const auto &registerInfos = varyingPacking.getRegisterList();
+    for (GLuint registerIndex = 0u; registerIndex < registerInfos.size(); ++registerIndex)
+    {
+        const PackedVaryingRegister &registerInfo = registerInfos[registerIndex];
+        const auto &packedVarying                 = *registerInfo.packedVarying;
+        const auto &varying                       = *packedVarying.varying;
+        ASSERT(!varying.isStruct());
+
+        vertexGenerateOutput << "    output.v" << registerIndex << " = ";
+
+        if (packedVarying.isStructField())
+        {
+            vertexGenerateOutput << DecorateVariable(packedVarying.parentStructName) << ".";
+        }
+
+        vertexGenerateOutput << DecorateVariable(varying.name);
+
+        if (varying.isArray())
+        {
+            WriteArrayString(vertexGenerateOutput, registerInfo.varyingArrayIndex);
+        }
+
+        if (VariableRowCount(varying.type) > 1)
+        {
+            WriteArrayString(vertexGenerateOutput, registerInfo.varyingRowIndex);
+        }
+
+        vertexGenerateOutput << ";\n";
+    }
+
+    // Instanced PointSprite emulation requires additional entries to calculate
+    // the final output vertex positions of the quad that represents each sprite.
+    if (useInstancedPointSpriteEmulation)
+    {
+        vertexGenerateOutput
+            << "\n"
+            << "    gl_PointSize = clamp(gl_PointSize, minPointSize, maxPointSize);\n";
+
+        vertexGenerateOutput
+            << "    output.dx_Position.x += (input.spriteVertexPos.x * gl_PointSize / "
+               "(dx_ViewCoords.x*2)) * output.dx_Position.w;";
+
+        if (programMetadata.usesViewScale())
+        {
+            // Multiply by ViewScale to invert the rendering when appropriate
+            vertexGenerateOutput
+                << "    output.dx_Position.y += (-dx_ViewScale.y * "
+                   "input.spriteVertexPos.y * gl_PointSize / (dx_ViewCoords.y*2)) * "
+                   "output.dx_Position.w;";
+        }
+        else
+        {
+            vertexGenerateOutput
+                << "    output.dx_Position.y += (input.spriteVertexPos.y * gl_PointSize / "
+                   "(dx_ViewCoords.y*2)) * output.dx_Position.w;";
+        }
+
+        vertexGenerateOutput
+            << "    output.dx_Position.z += input.spriteVertexPos.z * output.dx_Position.w;\n";
+
+        if (programMetadata.usesPointCoord())
+        {
+            vertexGenerateOutput << "\n"
+                                 << "    output.gl_PointCoord = input.spriteTexCoord;\n";
+        }
+    }
+
+    // Renderers that enable instanced pointsprite emulation require the vertex shader output member
+    // gl_PointCoord to be set to a default value if used without gl_PointSize. 0.5,0.5 is the same
+    // default value used in the generated pixel shader.
+    if (programMetadata.usesInsertedPointCoordValue())
+    {
+        ASSERT(!useInstancedPointSpriteEmulation);
+        vertexGenerateOutput << "\n"
+                             << "    output.gl_PointCoord = float2(0.5, 0.5);\n";
+    }
+
+    vertexGenerateOutput << "\n"
+                         << "    return output;\n"
+                         << "}";
+
+    std::string vertexSource = vertexShaderGL->getTranslatedSource();
+    angle::ReplaceSubstring(&vertexSource, std::string(MAIN_PROLOGUE_STUB_STRING),
+                            "    initAttributes(input);\n");
+    angle::ReplaceSubstring(&vertexSource, std::string(VERTEX_OUTPUT_STUB_STRING),
+                            vertexGenerateOutput.str());
+    vertexStream << vertexSource;
+
+    const auto &pixelBuiltins = builtinsD3D[gl::ShaderType::Fragment];
+
+    std::ostringstream pixelStream;
+    pixelStream << "struct PS_INPUT\n";
+    generateVaryingLinkHLSL(varyingPacking, pixelBuiltins, builtinsD3D.usesPointSize(),
+                            pixelStream);
+    pixelStream << "\n";
+
+    std::ostringstream pixelPrologue;
+    if (fragmentShader->usesViewID())
+    {
+        ASSERT(pixelBuiltins.glViewIDOVR.enabled);
+        pixelPrologue << "    ViewID_OVR = input.gl_ViewID_OVR;\n";
+    }
+
+    if (pixelBuiltins.glFragCoord.enabled)
+    {
+        pixelPrologue << "    float rhw = 1.0 / input.gl_FragCoord.w;\n";
+
+        // Certain Shader Models (4_0+ and 3_0) allow reading from dx_Position in the pixel shader.
+        // Other Shader Models (4_0_level_9_3 and 2_x) don't support this, so we emulate it using
+        // dx_ViewCoords.
+        if (shaderModel >= 4 && mRenderer->getShaderModelSuffix() == "")
+        {
+            pixelPrologue << "    gl_FragCoord.x = input.dx_Position.x;\n"
+                          << "    gl_FragCoord.y = input.dx_Position.y;\n";
+        }
+        else if (shaderModel == 3)
+        {
+            pixelPrologue << "    gl_FragCoord.x = input.dx_Position.x + 0.5;\n"
+                          << "    gl_FragCoord.y = input.dx_Position.y + 0.5;\n";
+        }
+        else
+        {
+            // dx_ViewCoords contains the viewport width/2, height/2, center.x and center.y. See
+            // Renderer::setViewport()
+            pixelPrologue
+                << "    gl_FragCoord.x = (input.gl_FragCoord.x * rhw) * dx_ViewCoords.x + "
+                   "dx_ViewCoords.z;\n"
+                << "    gl_FragCoord.y = (input.gl_FragCoord.y * rhw) * dx_ViewCoords.y + "
+                   "dx_ViewCoords.w;\n";
+        }
+
+        if (programMetadata.usesViewScale())
+        {
+            // For Feature Level 9_3 and below, we need to correct gl_FragCoord.y to account
+            // for dx_ViewScale. On Feature Level 10_0+, gl_FragCoord.y is calculated above using
+            // dx_ViewCoords and is always correct irrespective of dx_ViewScale's value.
+            // NOTE: usesViewScale() can only be true on D3D11 (i.e. Shader Model 4.0+).
+            if (shaderModel >= 4 && mRenderer->getShaderModelSuffix() == "")
+            {
+                // Some assumptions:
+                //  - dx_ViewScale.y = -1.0f when rendering to texture
+                //  - dx_ViewScale.y = +1.0f when rendering to the default framebuffer
+                //  - gl_FragCoord.y has been set correctly above.
+                //
+                // When rendering to the backbuffer, the code inverts gl_FragCoord's y coordinate.
+                // This involves subtracting the y coordinate from the height of the area being
+                // rendered to.
+                //
+                // First we calculate the height of the area being rendered to:
+                //    render_area_height = (2.0f / (1.0f - input.gl_FragCoord.y * rhw)) *
+                //    gl_FragCoord.y
+                //
+                // Note that when we're rendering to default FB, we want our output to be
+                // equivalent to:
+                //    "gl_FragCoord.y = render_area_height - gl_FragCoord.y"
+                //
+                // When we're rendering to a texture, we want our output to be equivalent to:
+                //    "gl_FragCoord.y = gl_FragCoord.y;"
+                //
+                // If we set scale_factor = ((1.0f + dx_ViewScale.y) / 2.0f), then notice that
+                //  - When rendering to default FB: scale_factor = 1.0f
+                //  - When rendering to texture:    scale_factor = 0.0f
+                //
+                // Therefore, we can get our desired output by setting:
+                //    "gl_FragCoord.y = scale_factor * render_area_height - dx_ViewScale.y *
+                //    gl_FragCoord.y"
+                //
+                // Simplifying, this becomes:
+                pixelPrologue
+                    << "    gl_FragCoord.y = (1.0f + dx_ViewScale.y) * gl_FragCoord.y /"
+                       "(1.0f - input.gl_FragCoord.y * rhw)  - dx_ViewScale.y * gl_FragCoord.y;\n";
+            }
+        }
+
+        pixelPrologue << "    gl_FragCoord.z = (input.gl_FragCoord.z * rhw) * dx_DepthFront.x + "
+                         "dx_DepthFront.y;\n"
+                      << "    gl_FragCoord.w = rhw;\n";
+    }
+
+    if (pixelBuiltins.glPointCoord.enabled && shaderModel >= 3)
+    {
+        pixelPrologue << "    gl_PointCoord.x = input.gl_PointCoord.x;\n"
+                      << "    gl_PointCoord.y = 1.0 - input.gl_PointCoord.y;\n";
+    }
+
+    if (fragmentShader->usesFrontFacing())
+    {
+        if (shaderModel <= 3)
+        {
+            pixelPrologue << "    gl_FrontFacing = (vFace * dx_DepthFront.z >= 0.0);\n";
+        }
+        else
+        {
+            pixelPrologue << "    gl_FrontFacing = isFrontFace;\n";
+        }
+    }
+
+    for (GLuint registerIndex = 0u; registerIndex < registerInfos.size(); ++registerIndex)
+    {
+        const PackedVaryingRegister &registerInfo = registerInfos[registerIndex];
+        const auto &packedVarying                 = *registerInfo.packedVarying;
+        const auto &varying                       = *packedVarying.varying;
+        ASSERT(!varying.isBuiltIn() && !varying.isStruct());
+
+        // Don't reference VS-only transform feedback varyings in the PS. Note that we're relying on
+        // that the active flag is set according to usage in the fragment shader.
+        if (packedVarying.vertexOnly || !varying.active)
+            continue;
+
+        pixelPrologue << "    ";
+
+        if (packedVarying.isStructField())
+        {
+            pixelPrologue << DecorateVariable(packedVarying.parentStructName) << ".";
+        }
+
+        pixelPrologue << DecorateVariable(varying.name);
+
+        if (varying.isArray())
+        {
+            WriteArrayString(pixelPrologue, registerInfo.varyingArrayIndex);
+        }
+
+        GLenum transposedType = TransposeMatrixType(varying.type);
+        if (VariableRowCount(transposedType) > 1)
+        {
+            WriteArrayString(pixelPrologue, registerInfo.varyingRowIndex);
+        }
+
+        pixelPrologue << " = input.v" << registerIndex;
+
+        switch (VariableColumnCount(transposedType))
+        {
+            case 1:
+                pixelPrologue << ".x";
+                break;
+            case 2:
+                pixelPrologue << ".xy";
+                break;
+            case 3:
+                pixelPrologue << ".xyz";
+                break;
+            case 4:
+                break;
+            default:
+                UNREACHABLE();
+        }
+        pixelPrologue << ";\n";
+    }
+
+    std::string pixelSource = fragmentShaderGL->getTranslatedSource();
+
+    if (fragmentShader->usesFrontFacing())
+    {
+        if (shaderModel >= 4)
+        {
+            angle::ReplaceSubstring(&pixelSource, std::string(PIXEL_MAIN_PARAMETERS_STUB_STRING),
+                                    "PS_INPUT input, bool isFrontFace : SV_IsFrontFace");
+        }
+        else
+        {
+            angle::ReplaceSubstring(&pixelSource, std::string(PIXEL_MAIN_PARAMETERS_STUB_STRING),
+                                    "PS_INPUT input, float vFace : VFACE");
+        }
+    }
+    else
+    {
+        angle::ReplaceSubstring(&pixelSource, std::string(PIXEL_MAIN_PARAMETERS_STUB_STRING),
+                                "PS_INPUT input");
+    }
+
+    angle::ReplaceSubstring(&pixelSource, std::string(MAIN_PROLOGUE_STUB_STRING),
+                            pixelPrologue.str());
+    pixelStream << pixelSource;
+
+    (*shaderHLSL)[gl::ShaderType::Vertex]   = vertexStream.str();
+    (*shaderHLSL)[gl::ShaderType::Fragment] = pixelStream.str();
+}
+
+std::string DynamicHLSL::generateGeometryShaderPreamble(const VaryingPacking &varyingPacking,
+                                                        const BuiltinVaryingsD3D &builtinsD3D,
+                                                        const bool hasANGLEMultiviewEnabled,
+                                                        const bool selectViewInVS) const
+{
+    ASSERT(mRenderer->getMajorShaderModel() >= 4);
+
+    std::ostringstream preambleStream;
+
+    const auto &vertexBuiltins = builtinsD3D[gl::ShaderType::Vertex];
+
+    preambleStream << "struct GS_INPUT\n";
+    generateVaryingLinkHLSL(varyingPacking, vertexBuiltins, builtinsD3D.usesPointSize(),
+                            preambleStream);
+    preambleStream << "\n"
+                   << "struct GS_OUTPUT\n";
+    generateVaryingLinkHLSL(varyingPacking, builtinsD3D[gl::ShaderType::Geometry],
+                            builtinsD3D.usesPointSize(), preambleStream);
+    preambleStream
+        << "\n"
+        << "void copyVertex(inout GS_OUTPUT output, GS_INPUT input, GS_INPUT flatinput)\n"
+        << "{\n"
+        << "    output.gl_Position = input.gl_Position;\n";
+
+    if (vertexBuiltins.glPointSize.enabled)
+    {
+        preambleStream << "    output.gl_PointSize = input.gl_PointSize;\n";
+    }
+
+    if (hasANGLEMultiviewEnabled)
+    {
+        preambleStream << "    output.gl_ViewID_OVR = input.gl_ViewID_OVR;\n";
+        if (selectViewInVS)
+        {
+            ASSERT(builtinsD3D[gl::ShaderType::Geometry].glViewportIndex.enabled &&
+                   builtinsD3D[gl::ShaderType::Geometry].glLayer.enabled);
+
+            // If the view is already selected in the VS, then we just pass the gl_ViewportIndex and
+            // gl_Layer to the output.
+            preambleStream << "    output.gl_ViewportIndex = input.gl_ViewportIndex;\n"
+                           << "    output.gl_Layer = input.gl_Layer;\n";
+        }
+    }
+
+    const auto &registerInfos = varyingPacking.getRegisterList();
+    for (GLuint registerIndex = 0u; registerIndex < registerInfos.size(); ++registerIndex)
+    {
+        const PackedVaryingRegister &varyingRegister = registerInfos[registerIndex];
+        preambleStream << "    output.v" << registerIndex << " = ";
+        if (varyingRegister.packedVarying->interpolation == sh::INTERPOLATION_FLAT)
+        {
+            preambleStream << "flat";
+        }
+        preambleStream << "input.v" << registerIndex << "; \n";
+    }
+
+    if (vertexBuiltins.glFragCoord.enabled)
+    {
+        preambleStream << "    output.gl_FragCoord = input.gl_FragCoord;\n";
+    }
+
+    // Only write the dx_Position if we aren't using point sprites
+    preambleStream << "#ifndef ANGLE_POINT_SPRITE_SHADER\n"
+                   << "    output.dx_Position = input.dx_Position;\n"
+                   << "#endif  // ANGLE_POINT_SPRITE_SHADER\n"
+                   << "}\n";
+
+    if (hasANGLEMultiviewEnabled && !selectViewInVS)
+    {
+        ASSERT(builtinsD3D[gl::ShaderType::Geometry].glViewportIndex.enabled &&
+               builtinsD3D[gl::ShaderType::Geometry].glLayer.enabled);
+
+        // According to the HLSL reference, using SV_RenderTargetArrayIndex is only valid if the
+        // render target is an array resource. Because of this we do not write to gl_Layer if we are
+        // taking the side-by-side code path. We still select the viewport index in the layered code
+        // path as that is always valid. See:
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/bb509647(v=vs.85).aspx
+        preambleStream << "\n"
+                       << "void selectView(inout GS_OUTPUT output, GS_INPUT input)\n"
+                       << "{\n"
+                       << "    if (multiviewSelectViewportIndex)\n"
+                       << "    {\n"
+                       << "        output.gl_ViewportIndex = input.gl_ViewID_OVR;\n"
+                       << "    } else {\n"
+                       << "        output.gl_ViewportIndex = 0;\n"
+                       << "        output.gl_Layer = input.gl_ViewID_OVR;\n"
+                       << "    }\n"
+                       << "}\n";
+    }
+
+    return preambleStream.str();
+}
+
+std::string DynamicHLSL::generateGeometryShaderHLSL(const gl::Caps &caps,
+                                                    gl::PrimitiveMode primitiveType,
+                                                    const gl::ProgramState &programData,
+                                                    const bool useViewScale,
+                                                    const bool hasANGLEMultiviewEnabled,
+                                                    const bool selectViewInVS,
+                                                    const bool pointSpriteEmulation,
+                                                    const std::string &preambleString) const
+{
+    ASSERT(mRenderer->getMajorShaderModel() >= 4);
+
+    std::stringstream shaderStream;
+
+    const bool pointSprites = (primitiveType == gl::PrimitiveMode::Points) && pointSpriteEmulation;
+    const bool usesPointCoord = preambleString.find("gl_PointCoord") != std::string::npos;
+
+    const char *inputPT  = nullptr;
+    const char *outputPT = nullptr;
+    int inputSize        = 0;
+    int maxVertexOutput  = 0;
+
+    switch (primitiveType)
+    {
+        case gl::PrimitiveMode::Points:
+            inputPT   = "point";
+            inputSize = 1;
+
+            if (pointSprites)
+            {
+                outputPT        = "Triangle";
+                maxVertexOutput = 4;
+            }
+            else
+            {
+                outputPT        = "Point";
+                maxVertexOutput = 1;
+            }
+
+            break;
+
+        case gl::PrimitiveMode::Lines:
+        case gl::PrimitiveMode::LineStrip:
+        case gl::PrimitiveMode::LineLoop:
+            inputPT         = "line";
+            outputPT        = "Line";
+            inputSize       = 2;
+            maxVertexOutput = 2;
+            break;
+
+        case gl::PrimitiveMode::Triangles:
+        case gl::PrimitiveMode::TriangleStrip:
+        case gl::PrimitiveMode::TriangleFan:
+            inputPT         = "triangle";
+            outputPT        = "Triangle";
+            inputSize       = 3;
+            maxVertexOutput = 3;
+            break;
+
+        default:
+            UNREACHABLE();
+            break;
+    }
+
+    if (pointSprites || hasANGLEMultiviewEnabled)
+    {
+        shaderStream << "cbuffer DriverConstants : register(b0)\n"
+                        "{\n";
+
+        if (pointSprites)
+        {
+            shaderStream << "    float4 dx_ViewCoords : packoffset(c1);\n";
+            if (useViewScale)
+            {
+                shaderStream << "    float2 dx_ViewScale : packoffset(c3);\n";
+            }
+        }
+
+        if (hasANGLEMultiviewEnabled)
+        {
+            // We have to add a value which we can use to keep track of which multi-view code path
+            // is to be selected in the GS.
+            shaderStream << "    float multiviewSelectViewportIndex : packoffset(c3.z);\n";
+        }
+
+        shaderStream << "};\n\n";
+    }
+
+    if (pointSprites)
+    {
+        shaderStream << "#define ANGLE_POINT_SPRITE_SHADER\n"
+                        "\n"
+                        "static float2 pointSpriteCorners[] = \n"
+                        "{\n"
+                        "    float2( 0.5f, -0.5f),\n"
+                        "    float2( 0.5f,  0.5f),\n"
+                        "    float2(-0.5f, -0.5f),\n"
+                        "    float2(-0.5f,  0.5f)\n"
+                        "};\n"
+                        "\n"
+                        "static float2 pointSpriteTexcoords[] = \n"
+                        "{\n"
+                        "    float2(1.0f, 1.0f),\n"
+                        "    float2(1.0f, 0.0f),\n"
+                        "    float2(0.0f, 1.0f),\n"
+                        "    float2(0.0f, 0.0f)\n"
+                        "};\n"
+                        "\n"
+                        "static float minPointSize = "
+                     << static_cast<int>(caps.minAliasedPointSize)
+                     << ".0f;\n"
+                        "static float maxPointSize = "
+                     << static_cast<int>(caps.maxAliasedPointSize) << ".0f;\n"
+                     << "\n";
+    }
+
+    shaderStream << preambleString << "\n"
+                 << "[maxvertexcount(" << maxVertexOutput << ")]\n"
+                 << "void main(" << inputPT << " GS_INPUT input[" << inputSize << "], ";
+
+    if (primitiveType == gl::PrimitiveMode::TriangleStrip)
+    {
+        shaderStream << "uint primitiveID : SV_PrimitiveID, ";
+    }
+
+    shaderStream << " inout " << outputPT << "Stream<GS_OUTPUT> outStream)\n"
+                 << "{\n"
+                 << "    GS_OUTPUT output = (GS_OUTPUT)0;\n";
+
+    if (primitiveType == gl::PrimitiveMode::TriangleStrip)
+    {
+        shaderStream << "    uint lastVertexIndex = (primitiveID % 2 == 0 ? 2 : 1);\n";
+    }
+    else
+    {
+        shaderStream << "    uint lastVertexIndex = " << (inputSize - 1) << ";\n";
+    }
+
+    for (int vertexIndex = 0; vertexIndex < inputSize; ++vertexIndex)
+    {
+        shaderStream << "    copyVertex(output, input[" << vertexIndex
+                     << "], input[lastVertexIndex]);\n";
+        if (hasANGLEMultiviewEnabled && !selectViewInVS)
+        {
+            shaderStream << "   selectView(output, input[" << vertexIndex << "]);\n";
+        }
+        if (!pointSprites)
+        {
+            ASSERT(inputSize == maxVertexOutput);
+            shaderStream << "    outStream.Append(output);\n";
+        }
+    }
+
+    if (pointSprites)
+    {
+        shaderStream << "\n"
+                        "    float4 dx_Position = input[0].dx_Position;\n"
+                        "    float gl_PointSize = clamp(input[0].gl_PointSize, minPointSize, "
+                        "maxPointSize);\n"
+                        "    float2 viewportScale = float2(1.0f / dx_ViewCoords.x, 1.0f / "
+                        "dx_ViewCoords.y) * dx_Position.w;\n";
+
+        for (int corner = 0; corner < 4; corner++)
+        {
+            if (useViewScale)
+            {
+                shaderStream << "    \n"
+                                "    output.dx_Position = dx_Position + float4(1.0f, "
+                                "-dx_ViewScale.y, 1.0f, 1.0f)"
+                                "        * float4(pointSpriteCorners["
+                             << corner << "] * viewportScale * gl_PointSize, 0.0f, 0.0f);\n";
+            }
+            else
+            {
+                shaderStream << "\n"
+                                "    output.dx_Position = dx_Position + float4(pointSpriteCorners["
+                             << corner << "] * viewportScale * gl_PointSize, 0.0f, 0.0f);\n";
+            }
+
+            if (usesPointCoord)
+            {
+                shaderStream << "    output.gl_PointCoord = pointSpriteTexcoords[" << corner
+                             << "];\n";
+            }
+
+            shaderStream << "    outStream.Append(output);\n";
+        }
+    }
+
+    shaderStream << "    \n"
+                    "    outStream.RestartStrip();\n"
+                    "}\n";
+
+    return shaderStream.str();
+}
+
+// static
+void DynamicHLSL::GenerateAttributeConversionHLSL(angle::FormatID vertexFormatID,
+                                                  const sh::ShaderVariable &shaderAttrib,
+                                                  std::ostringstream &outStream)
+{
+    // Matrix
+    if (IsMatrixType(shaderAttrib.type))
+    {
+        outStream << "transpose(input." << DecorateVariable(shaderAttrib.name) << ")";
+        return;
+    }
+
+    GLenum shaderComponentType           = VariableComponentType(shaderAttrib.type);
+    int shaderComponentCount             = VariableComponentCount(shaderAttrib.type);
+    const gl::VertexFormat &vertexFormat = gl::GetVertexFormatFromID(vertexFormatID);
+
+    // Perform integer to float conversion (if necessary)
+    if (shaderComponentType == GL_FLOAT && vertexFormat.type != GL_FLOAT)
+    {
+        // TODO: normalization for 32-bit integer formats
+        ASSERT(!vertexFormat.normalized && !vertexFormat.pureInteger);
+        outStream << "float" << shaderComponentCount << "(input."
+                  << DecorateVariable(shaderAttrib.name) << ")";
+        return;
+    }
+
+    // No conversion necessary
+    outStream << "input." << DecorateVariable(shaderAttrib.name);
+}
+
+void DynamicHLSL::getPixelShaderOutputKey(const gl::State &data,
+                                          const gl::ProgramState &programData,
+                                          const ProgramD3DMetadata &metadata,
+                                          std::vector<PixelShaderOutputVariable> *outPixelShaderKey)
+{
+    // Two cases when writing to gl_FragColor and using ESSL 1.0:
+    // - with a 3.0 context, the output color is copied to channel 0
+    // - with a 2.0 context, the output color is broadcast to all channels
+    bool broadcast = metadata.usesBroadcast(data);
+    const unsigned int numRenderTargets =
+        (broadcast || metadata.usesMultipleFragmentOuts() ? data.getCaps().maxDrawBuffers : 1);
+
+    if (metadata.getMajorShaderVersion() < 300)
+    {
+        for (unsigned int renderTargetIndex = 0; renderTargetIndex < numRenderTargets;
+             renderTargetIndex++)
+        {
+            PixelShaderOutputVariable outputKeyVariable;
+            outputKeyVariable.type = GL_FLOAT_VEC4;
+            outputKeyVariable.name = "gl_Color" + Str(renderTargetIndex);
+            outputKeyVariable.source =
+                broadcast ? "gl_Color[0]" : "gl_Color[" + Str(renderTargetIndex) + "]";
+            outputKeyVariable.outputLocation = renderTargetIndex;
+
+            outPixelShaderKey->push_back(outputKeyVariable);
+        }
+
+        if (metadata.usesSecondaryColor())
+        {
+            for (unsigned int secondaryIndex = 0;
+                 secondaryIndex < data.getExtensions().maxDualSourceDrawBuffers; secondaryIndex++)
+            {
+                PixelShaderOutputVariable outputKeyVariable;
+                outputKeyVariable.type           = GL_FLOAT_VEC4;
+                outputKeyVariable.name           = "gl_SecondaryColor" + Str(secondaryIndex);
+                outputKeyVariable.source         = "gl_SecondaryColor[" + Str(secondaryIndex) + "]";
+                outputKeyVariable.outputLocation = secondaryIndex;
+                outputKeyVariable.outputIndex    = 1;
+
+                outPixelShaderKey->push_back(outputKeyVariable);
+            }
+        }
+    }
+    else
+    {
+        const auto &shaderOutputVars =
+            metadata.getFragmentShader()->getData().getActiveOutputVariables();
+
+        for (size_t outputLocationIndex = 0u;
+             outputLocationIndex < programData.getOutputLocations().size(); ++outputLocationIndex)
+        {
+            const VariableLocation &outputLocation =
+                programData.getOutputLocations().at(outputLocationIndex);
+            if (!outputLocation.used())
+            {
+                continue;
+            }
+            const sh::ShaderVariable &outputVariable = shaderOutputVars[outputLocation.index];
+            const std::string &variableName          = "out_" + outputVariable.name;
+
+            // Fragment outputs can't be arrays of arrays. ESSL 3.10 section 4.3.6.
+            const std::string &elementString =
+                (outputVariable.isArray() ? Str(outputLocation.arrayIndex) : "");
+
+            ASSERT(outputVariable.active);
+
+            PixelShaderOutputVariable outputKeyVariable;
+            outputKeyVariable.type = outputVariable.type;
+            outputKeyVariable.name = variableName + elementString;
+            outputKeyVariable.source =
+                variableName +
+                (outputVariable.isArray() ? ArrayString(outputLocation.arrayIndex) : "");
+            outputKeyVariable.outputLocation = outputLocationIndex;
+
+            outPixelShaderKey->push_back(outputKeyVariable);
+        }
+
+        // Now generate any secondary outputs...
+        for (size_t outputLocationIndex = 0u;
+             outputLocationIndex < programData.getSecondaryOutputLocations().size();
+             ++outputLocationIndex)
+        {
+            const VariableLocation &outputLocation =
+                programData.getSecondaryOutputLocations().at(outputLocationIndex);
+            if (!outputLocation.used())
+            {
+                continue;
+            }
+            const sh::ShaderVariable &outputVariable = shaderOutputVars[outputLocation.index];
+            const std::string &variableName          = "out_" + outputVariable.name;
+
+            // Fragment outputs can't be arrays of arrays. ESSL 3.10 section 4.3.6.
+            const std::string &elementString =
+                (outputVariable.isArray() ? Str(outputLocation.arrayIndex) : "");
+
+            ASSERT(outputVariable.active);
+
+            PixelShaderOutputVariable outputKeyVariable;
+            outputKeyVariable.type = outputVariable.type;
+            outputKeyVariable.name = variableName + elementString;
+            outputKeyVariable.source =
+                variableName +
+                (outputVariable.isArray() ? ArrayString(outputLocation.arrayIndex) : "");
+            outputKeyVariable.outputLocation = outputLocationIndex;
+            outputKeyVariable.outputIndex    = 1;
+
+            outPixelShaderKey->push_back(outputKeyVariable);
+        }
+    }
+}
+
+// BuiltinVarying Implementation.
+BuiltinVarying::BuiltinVarying() : enabled(false), index(0), systemValue(false) {}
+
+std::string BuiltinVarying::str() const
+{
+    return (systemValue ? semantic : (semantic + Str(index)));
+}
+
+void BuiltinVarying::enableSystem(const std::string &systemValueSemantic)
+{
+    enabled     = true;
+    semantic    = systemValueSemantic;
+    systemValue = true;
+}
+
+void BuiltinVarying::enable(const std::string &semanticVal, unsigned int indexVal)
+{
+    enabled  = true;
+    semantic = semanticVal;
+    index    = indexVal;
+}
+
+// BuiltinVaryingsD3D Implementation.
+BuiltinVaryingsD3D::BuiltinVaryingsD3D(const ProgramD3DMetadata &metadata,
+                                       const VaryingPacking &packing)
+{
+    updateBuiltins(gl::ShaderType::Vertex, metadata, packing);
+    updateBuiltins(gl::ShaderType::Fragment, metadata, packing);
+    int shaderModel = metadata.getRendererMajorShaderModel();
+    if (shaderModel >= 4)
+    {
+        updateBuiltins(gl::ShaderType::Geometry, metadata, packing);
+    }
+    // In shader model >= 4, some builtins need to be the same in vertex and pixel shaders - input
+    // struct needs to be a prefix of output struct.
+    ASSERT(shaderModel < 4 || mBuiltinInfo[gl::ShaderType::Vertex].glPosition.enabled ==
+                                  mBuiltinInfo[gl::ShaderType::Fragment].glPosition.enabled);
+    ASSERT(shaderModel < 4 || mBuiltinInfo[gl::ShaderType::Vertex].glFragCoord.enabled ==
+                                  mBuiltinInfo[gl::ShaderType::Fragment].glFragCoord.enabled);
+    ASSERT(shaderModel < 4 || mBuiltinInfo[gl::ShaderType::Vertex].glPointCoord.enabled ==
+                                  mBuiltinInfo[gl::ShaderType::Fragment].glPointCoord.enabled);
+    ASSERT(shaderModel < 4 || mBuiltinInfo[gl::ShaderType::Vertex].glPointSize.enabled ==
+                                  mBuiltinInfo[gl::ShaderType::Fragment].glPointSize.enabled);
+    ASSERT(shaderModel < 4 || mBuiltinInfo[gl::ShaderType::Vertex].glViewIDOVR.enabled ==
+                                  mBuiltinInfo[gl::ShaderType::Fragment].glViewIDOVR.enabled);
+}
+
+BuiltinVaryingsD3D::~BuiltinVaryingsD3D() = default;
+
+void BuiltinVaryingsD3D::updateBuiltins(gl::ShaderType shaderType,
+                                        const ProgramD3DMetadata &metadata,
+                                        const VaryingPacking &packing)
+{
+    const std::string &userSemantic = GetVaryingSemantic(metadata.getRendererMajorShaderModel(),
+                                                         metadata.usesSystemValuePointSize());
+
+    // Note that when enabling builtins only for specific shader stages in shader model >= 4, the
+    // code needs to ensure that the input struct of the shader stage is a prefix of the output
+    // struct of the previous stage.
+
+    unsigned int reservedSemanticIndex = packing.getMaxSemanticIndex();
+
+    BuiltinInfo *builtins = &mBuiltinInfo[shaderType];
+
+    if (metadata.getRendererMajorShaderModel() >= 4)
+    {
+        builtins->dxPosition.enableSystem("SV_Position");
+    }
+    else if (shaderType == gl::ShaderType::Fragment)
+    {
+        builtins->dxPosition.enableSystem("VPOS");
+    }
+    else
+    {
+        builtins->dxPosition.enableSystem("POSITION");
+    }
+
+    if (metadata.usesTransformFeedbackGLPosition())
+    {
+        builtins->glPosition.enable(userSemantic, reservedSemanticIndex++);
+    }
+
+    if (metadata.usesFragCoord())
+    {
+        builtins->glFragCoord.enable(userSemantic, reservedSemanticIndex++);
+    }
+
+    if (shaderType == gl::ShaderType::Vertex ? metadata.addsPointCoordToVertexShader()
+                                             : metadata.usesPointCoord())
+    {
+        // SM3 reserves the TEXCOORD semantic for point sprite texcoords (gl_PointCoord)
+        // In D3D11 we manually compute gl_PointCoord in the GS.
+        if (metadata.getRendererMajorShaderModel() >= 4)
+        {
+            builtins->glPointCoord.enable(userSemantic, reservedSemanticIndex++);
+        }
+        else
+        {
+            builtins->glPointCoord.enable("TEXCOORD", 0);
+        }
+    }
+
+    if (metadata.hasANGLEMultiviewEnabled())
+    {
+        // Although it is possible to compute gl_ViewID_OVR from the value of
+        // SV_ViewportArrayIndex or SV_RenderTargetArrayIndex and the multi-view state in the
+        // driver constant buffer, it is easier and cleaner to always pass it as a varying.
+        builtins->glViewIDOVR.enable(userSemantic, reservedSemanticIndex++);
+
+        if (shaderType == gl::ShaderType::Vertex)
+        {
+            if (metadata.canSelectViewInVertexShader())
+            {
+                builtins->glViewportIndex.enableSystem("SV_ViewportArrayIndex");
+                builtins->glLayer.enableSystem("SV_RenderTargetArrayIndex");
+            }
+        }
+
+        if (shaderType == gl::ShaderType::Geometry)
+        {
+            // gl_Layer and gl_ViewportIndex are necessary so that we can write to either based on
+            // the multiview state in the driver constant buffer.
+            builtins->glViewportIndex.enableSystem("SV_ViewportArrayIndex");
+            builtins->glLayer.enableSystem("SV_RenderTargetArrayIndex");
+        }
+    }
+
+    // Special case: do not include PSIZE semantic in HLSL 3 pixel shaders
+    if (metadata.usesSystemValuePointSize() &&
+        (shaderType != gl::ShaderType::Fragment || metadata.getRendererMajorShaderModel() >= 4))
+    {
+        builtins->glPointSize.enableSystem("PSIZE");
+    }
+}
+
+}  // namespace rx