Re-land sksl fragment processor support

This reverts commit ed50200682e0de72c3abecaa4d5324ebcd1ed9f9.

Bug: skia:
Change-Id: I9caa7454b391450620d6989dc472abb3cf7a2cab
Reviewed-on: https://skia-review.googlesource.com/20965
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 600 insertions, 0 deletions

diff --git a/src/sksl/SkSLCPPCodeGenerator.cpp b/src/sksl/SkSLCPPCodeGenerator.cpp
new file mode 100644
index 0000000000..0b3c7d58da
--- /dev/null
+++ b/src/sksl/SkSLCPPCodeGenerator.cpp
@@ -0,0 +1,600 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSLCPPCodeGenerator.h"
+
+#include "SkSLCompiler.h"
+#include "SkSLHCodeGenerator.h"
+
+namespace SkSL {
+
+static bool needs_uniform_var(const Variable& var) {
+    return (var.fModifiers.fFlags & Modifiers::kUniform_Flag) &&
+           strcmp(var.fType.fName.c_str(), "colorSpaceXform");
+}
+
+CPPCodeGenerator::CPPCodeGenerator(const Context* context, const Program* program,
+                                   ErrorReporter* errors, String name, OutputStream* out)
+: INHERITED(context, program, errors, out)
+, fName(std::move(name))
+, fFullName(String::printf("Gr%s", fName.c_str()))
+, fSectionAndParameterHelper(*program, *errors) {
+    fLineEnding = "\\n";
+}
+
+void CPPCodeGenerator::writef(const char* s, va_list va) {
+    static constexpr int BUFFER_SIZE = 1024;
+    char buffer[BUFFER_SIZE];
+    int length = vsnprintf(buffer, BUFFER_SIZE, s, va);
+    if (length < BUFFER_SIZE) {
+        fOut->write(buffer, length);
+    } else {
+        std::unique_ptr<char[]> heap(new char[length + 1]);
+        vsprintf(heap.get(), s, va);
+        fOut->write(heap.get(), length);
+    }
+}
+
+void CPPCodeGenerator::writef(const char* s, ...) {
+    va_list va;
+    va_start(va, s);
+    this->writef(s, va);
+    va_end(va);
+}
+
+void CPPCodeGenerator::writeHeader() {
+}
+
+void CPPCodeGenerator::writePrecisionModifier() {
+}
+
+void CPPCodeGenerator::writeBinaryExpression(const BinaryExpression& b,
+                                             Precedence parentPrecedence) {
+    if (b.fOperator == Token::PERCENT) {
+        // need to use "%%" instead of "%" b/c the code will be inside of a printf
+        Precedence precedence = GetBinaryPrecedence(b.fOperator);
+        if (precedence >= parentPrecedence) {
+            this->write("(");
+        }
+        this->writeExpression(*b.fLeft, precedence);
+        this->write(" %% ");
+        this->writeExpression(*b.fRight, precedence);
+        if (precedence >= parentPrecedence) {
+            this->write(")");
+        }
+    } else {
+        INHERITED::writeBinaryExpression(b, parentPrecedence);
+    }
+}
+
+void CPPCodeGenerator::writeIndexExpression(const IndexExpression& i) {
+    const Expression& base = *i.fBase;
+    if (base.fKind == Expression::kVariableReference_Kind) {
+        int builtin = ((VariableReference&) base).fVariable.fModifiers.fLayout.fBuiltin;
+        if (SK_TRANSFORMEDCOORDS2D_BUILTIN == builtin) {
+            this->write("%s");
+            if (i.fIndex->fKind != Expression::kIntLiteral_Kind) {
+                fErrors.error(i.fIndex->fPosition,
+                              "index into sk_TransformedCoords2D must be an integer literal");
+                return;
+            }
+            int64_t index = ((IntLiteral&) *i.fIndex).fValue;
+            String name = "sk_TransformedCoords2D_" + to_string(index);
+            fFormatArgs.push_back(name + ".c_str()");
+            if (fWrittenTransformedCoords.find(index) == fWrittenTransformedCoords.end()) {
+                fExtraEmitCodeCode += "        SkSL::String " + name +
+                                      " = fragBuilder->ensureCoords2D(args.fTransformedCoords[" +
+                                      to_string(index) + "]);\n";
+                fWrittenTransformedCoords.insert(index);
+            }
+            return;
+        } else if (SK_TEXTURESAMPLERS_BUILTIN == builtin) {
+            this->write("%s");
+            if (i.fIndex->fKind != Expression::kIntLiteral_Kind) {
+                fErrors.error(i.fIndex->fPosition,
+                              "index into sk_TextureSamplers must be an integer literal");
+                return;
+            }
+            int64_t index = ((IntLiteral&) *i.fIndex).fValue;
+            fFormatArgs.push_back("        fragBuilder->getProgramBuilder()->samplerVariable("
+                                            "args.fTexSamplers[" + to_string(index) + "]).c_str()");
+            return;
+        }
+    }
+    INHERITED::writeIndexExpression(i);
+}
+
+static const char* default_value(const Type& type) {
+    const char* name = type.name().c_str();
+    if (!strcmp(name, "float")) {
+        return "0.0";
+    } else if (!strcmp(name, "vec2")) {
+        return "vec2(0.0)";
+    } else if (!strcmp(name, "vec3")) {
+        return "vec3(0.0)";
+    } else if (!strcmp(name, "vec4")) {
+        return "vec4(0.0)";
+    } else if (!strcmp(name, "mat4") || !strcmp(name, "colorSpaceXform")) {
+        return "mat4(1.0)";
+    }
+    ABORT("unsupported default_value type\n");
+}
+
+static bool is_private(const Variable& var) {
+    return !(var.fModifiers.fFlags & Modifiers::kUniform_Flag) &&
+           !(var.fModifiers.fFlags & Modifiers::kIn_Flag) &&
+           var.fStorage == Variable::kGlobal_Storage &&
+           var.fModifiers.fLayout.fBuiltin == -1;
+}
+
+void CPPCodeGenerator::writeRuntimeValue(const Type& type, const String& cppCode) {
+    if (type == *fContext.fFloat_Type) {
+        this->write("%f");
+        fFormatArgs.push_back(cppCode);
+    } else if (type == *fContext.fInt_Type) {
+        this->write("%d");
+        fFormatArgs.push_back(cppCode);
+    } else if (type == *fContext.fBool_Type) {
+        this->write("%s");
+        fFormatArgs.push_back("(" + cppCode + " ? \"true\" : \"false\")");
+    } else if (type == *fContext.fVec2_Type) {
+        this->write("vec2(%f, %f)");
+        fFormatArgs.push_back(cppCode + ".fX");
+        fFormatArgs.push_back(cppCode + ".fY");
+    } else {
+        printf("%s\n", type.name().c_str());
+        ABORT("unsupported runtime value type\n");
+    }
+}
+
+void CPPCodeGenerator::writeVarInitializer(const Variable& var, const Expression& value) {
+    if (is_private(var)) {
+        this->writeRuntimeValue(var.fType, var.fName);
+    } else {
+        this->writeExpression(value, kTopLevel_Precedence);
+    }
+}
+
+void CPPCodeGenerator::writeVariableReference(const VariableReference& ref) {
+    switch (ref.fVariable.fModifiers.fLayout.fBuiltin) {
+        case SK_INCOLOR_BUILTIN:
+            this->write("%s");
+            fFormatArgs.push_back(String("args.fInputColor ? args.fInputColor : \"vec4(1)\""));
+            break;
+        case SK_OUTCOLOR_BUILTIN:
+            this->write("%s");
+            fFormatArgs.push_back(String("args.fOutputColor"));
+            break;
+        default:
+            if (ref.fVariable.fType.kind() == Type::kSampler_Kind) {
+                int samplerCount = 0;
+                for (const auto param : fSectionAndParameterHelper.fParameters) {
+                    if (&ref.fVariable == param) {
+                        this->write("%s");
+                        fFormatArgs.push_back("fragBuilder->getProgramBuilder()->samplerVariable("
+                                              "args.fTexSamplers[" + to_string(samplerCount) +
+                                              "]).c_str()");
+                        return;
+                    }
+                    if (param->fType.kind() == Type::kSampler_Kind) {
+                        ++samplerCount;
+                    }
+                }
+                ABORT("should have found sampler in parameters\n");
+            }
+            if (ref.fVariable.fModifiers.fFlags & Modifiers::kUniform_Flag) {
+                this->write("%s");
+                String name = ref.fVariable.fName;
+                String var;
+                if (ref.fVariable.fType == *fContext.fColorSpaceXform_Type) {
+                    ASSERT(fNeedColorSpaceHelper);
+                    var = String::printf("fColorSpaceHelper.isValid() ? "
+                                         "args.fUniformHandler->getUniformCStr("
+                                                  "fColorSpaceHelper.gamutXformUniform()) : \"%s\"",
+                           default_value(ref.fVariable.fType));
+                } else {
+                    var = String::printf("args.fUniformHandler->getUniformCStr(%sVar)",
+                                         HCodeGenerator::FieldName(name.c_str()).c_str());
+                }
+                String code;
+                if (ref.fVariable.fModifiers.fLayout.fWhen.size()) {
+                    code = String::printf("%sVar.isValid() ? %s : \"%s\"",
+                                          HCodeGenerator::FieldName(name.c_str()).c_str(),
+                                          var.c_str(),
+                                          default_value(ref.fVariable.fType));
+                } else {
+                    code = var;
+                }
+                fFormatArgs.push_back(code);
+            } else if (SectionAndParameterHelper::IsParameter(ref.fVariable)) {
+                const char* name = ref.fVariable.fName.c_str();
+                this->writeRuntimeValue(ref.fVariable.fType,
+                                        String::printf("_outer.%s()", name).c_str());
+            } else {
+                this->write(ref.fVariable.fName.c_str());
+            }
+    }
+}
+
+void CPPCodeGenerator::writeFunction(const FunctionDefinition& f) {
+    if (f.fDeclaration.fName == "main") {
+        fFunctionHeader = "";
+        OutputStream* oldOut = fOut;
+        StringStream buffer;
+        fOut = &buffer;
+        for (const auto& s : ((Block&) *f.fBody).fStatements) {
+            this->writeStatement(*s);
+            this->writeLine();
+        }
+
+        fOut = oldOut;
+        this->write(fFunctionHeader);
+        this->write(buffer.str());
+    } else {
+        INHERITED::writeFunction(f);
+    }
+}
+
+void CPPCodeGenerator::writeSetting(const Setting& s) {
+    static constexpr const char* kPrefix = "sk_Args.";
+    if (!strncmp(s.fName.c_str(), kPrefix, strlen(kPrefix))) {
+        const char* name = s.fName.c_str() + strlen(kPrefix);
+        this->writeRuntimeValue(s.fType, HCodeGenerator::FieldName(name).c_str());
+    } else {
+        this->write(s.fName.c_str());
+    }
+}
+
+void CPPCodeGenerator::writeSection(const char* name, const char* prefix) {
+    const auto found = fSectionAndParameterHelper.fSections.find(String(name));
+    if (found != fSectionAndParameterHelper.fSections.end()) {
+        this->writef("%s%s", prefix, found->second->fText.c_str());
+    }
+}
+
+void CPPCodeGenerator::writeProgramElement(const ProgramElement& p) {
+    if (p.fKind == ProgramElement::kSection_Kind) {
+        return;
+    }
+    if (p.fKind == ProgramElement::kVar_Kind) {
+        const VarDeclarations& decls = (const VarDeclarations&) p;
+        if (!decls.fVars.size()) {
+            return;
+        }
+        const Variable& var = *((VarDeclaration&) *decls.fVars[0]).fVar;
+        if (var.fModifiers.fFlags & (Modifiers::kIn_Flag | Modifiers::kUniform_Flag) ||
+            -1 != var.fModifiers.fLayout.fBuiltin) {
+            return;
+        }
+    }
+    INHERITED::writeProgramElement(p);
+}
+
+void CPPCodeGenerator::addUniform(const Variable& var) {
+    if (!needs_uniform_var(var)) {
+        return;
+    }
+    const char* precision;
+    if (var.fModifiers.fFlags & Modifiers::kHighp_Flag) {
+        precision = "kHigh_GrSLPrecision";
+    } else if (var.fModifiers.fFlags & Modifiers::kMediump_Flag) {
+        precision = "kMedium_GrSLPrecision";
+    } else if (var.fModifiers.fFlags & Modifiers::kLowp_Flag) {
+        precision = "kLow_GrSLPrecision";
+    } else {
+        precision = "kDefault_GrSLPrecision";
+    }
+    const char* type;
+    if (var.fType == *fContext.fFloat_Type) {
+        type = "kFloat_GrSLType";
+    } else if (var.fType == *fContext.fVec2_Type) {
+        type = "kVec2f_GrSLType";
+    } else if (var.fType == *fContext.fVec4_Type) {
+        type = "kVec4f_GrSLType";
+    } else if (var.fType == *fContext.fMat4x4_Type ||
+               var.fType == *fContext.fColorSpaceXform_Type) {
+        type = "kMat44f_GrSLType";
+    } else {
+        ABORT("unsupported uniform type: %s %s;\n", var.fType.name().c_str(), var.fName.c_str());
+    }
+    if (var.fModifiers.fLayout.fWhen.size()) {
+        this->writef("        if (%s) {\n    ", var.fModifiers.fLayout.fWhen.c_str());
+    }
+    const char* name = var.fName.c_str();
+    this->writef("        %sVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, %s, "
+                 "%s, \"%s\");\n", HCodeGenerator::FieldName(name).c_str(), type, precision, name);
+    if (var.fModifiers.fLayout.fWhen.size()) {
+        this->write("        }\n");
+    }
+}
+
+void CPPCodeGenerator::writePrivateVars() {
+    for (const auto& p : fProgram.fElements) {
+        if (ProgramElement::kVar_Kind == p->fKind) {
+            const VarDeclarations* decls = (const VarDeclarations*) p.get();
+            for (const auto& raw : decls->fVars) {
+                VarDeclaration& decl = (VarDeclaration&) *raw;
+                if (is_private(*decl.fVar)) {
+                    this->writef("%s %s;\n",
+                                 HCodeGenerator::FieldType(decl.fVar->fType).c_str(),
+                                 decl.fVar->fName.c_str());
+                }
+            }
+        }
+    }
+}
+
+void CPPCodeGenerator::writePrivateVarValues() {
+    for (const auto& p : fProgram.fElements) {
+        if (ProgramElement::kVar_Kind == p->fKind) {
+            const VarDeclarations* decls = (const VarDeclarations*) p.get();
+            for (const auto& raw : decls->fVars) {
+                VarDeclaration& decl = (VarDeclaration&) *raw;
+                if (is_private(*decl.fVar) && decl.fValue) {
+                    this->writef("%s = %s;\n",
+                                 decl.fVar->fName.c_str(),
+                                 decl.fValue->description().c_str());
+                }
+            }
+        }
+    }
+}
+
+bool CPPCodeGenerator::writeEmitCode(std::vector<const Variable*>& uniforms) {
+    this->write("    void emitCode(EmitArgs& args) override {\n"
+                "        GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;\n");
+    this->writef("        const %s& _outer = args.fFp.cast<%s>();\n"
+                 "        (void) _outer;\n",
+                 fFullName.c_str(), fFullName.c_str());
+    this->writePrivateVarValues();
+    for (const auto u : uniforms) {
+        this->addUniform(*u);
+        if (u->fType == *fContext.fColorSpaceXform_Type) {
+            if (fNeedColorSpaceHelper) {
+                fErrors.error(u->fPosition, "only a single ColorSpaceXform is supported");
+            }
+            fNeedColorSpaceHelper = true;
+            this->writef("        fColorSpaceHelper.emitCode(args.fUniformHandler, "
+                                                            "_outer.%s().get());\n",
+                         u->fName.c_str());
+        }
+    }
+    this->writeSection(EMIT_CODE_SECTION);
+    OutputStream* old = fOut;
+    StringStream mainBuffer;
+    fOut = &mainBuffer;
+    bool result = INHERITED::generateCode();
+    fOut = old;
+    this->writef("%s        fragBuilder->codeAppendf(\"%s\"", fExtraEmitCodeCode.c_str(),
+                 mainBuffer.str().c_str());
+    for (const auto& s : fFormatArgs) {
+        this->writef(", %s", s.c_str());
+    }
+    this->write(");\n"
+                "    }\n");
+    return result;
+}
+
+void CPPCodeGenerator::writeSetData(std::vector<const Variable*>& uniforms) {
+    const char* fullName = fFullName.c_str();
+    auto section = fSectionAndParameterHelper.fSections.find(String(SET_DATA_SECTION));
+    const char* pdman = section != fSectionAndParameterHelper.fSections.end() ?
+                                                                section->second->fArgument.c_str() :
+                                                                "pdman";
+    this->writef("    void onSetData(const GrGLSLProgramDataManager& %s, "
+                                    "const GrFragmentProcessor& _proc) override {\n",
+                 pdman);
+    bool wroteProcessor = false;
+    for (const auto u : uniforms) {
+        if (u->fModifiers.fFlags & Modifiers::kIn_Flag) {
+            if (!wroteProcessor) {
+                this->writef("        const %s& _outer = _proc.cast<%s>();\n", fullName, fullName);
+                wroteProcessor = true;
+                this->writef("        {\n");
+            }
+            const char* name = u->fName.c_str();
+            if (u->fType == *fContext.fVec4_Type) {
+                this->writef("        const SkRect %sValue = _outer.%s();\n"
+                             "        %s.set4fv(%sVar, 4, (float*) &%sValue);\n",
+                             name, name, pdman, HCodeGenerator::FieldName(name).c_str(), name);
+            } else if (u->fType == *fContext.fMat4x4_Type) {
+                this->writef("        float %sValue[16];\n"
+                             "        _outer.%s().asColMajorf(%sValue);\n"
+                             "        %s.setMatrix4f(%sVar, %sValue);\n",
+                             name, name, name, pdman, HCodeGenerator::FieldName(name).c_str(),
+                             name);
+            } else if (u->fType == *fContext.fColorSpaceXform_Type) {
+                ASSERT(fNeedColorSpaceHelper);
+                this->writef("        if (fColorSpaceHelper.isValid()) {\n"
+                             "            fColorSpaceHelper.setData(%s, _outer.%s().get());\n"
+                             "        }\n",
+                             pdman, name);
+            } else {
+                this->writef("        %s.set1f(%sVar, _outer.%s());\n",
+                             pdman, HCodeGenerator::FieldName(name).c_str(), name);
+            }
+        }
+    }
+    if (wroteProcessor) {
+        this->writef("        }\n");
+    }
+    if (section != fSectionAndParameterHelper.fSections.end()) {
+        for (const auto& p : fProgram.fElements) {
+            if (ProgramElement::kVar_Kind == p->fKind) {
+                const VarDeclarations* decls = (const VarDeclarations*) p.get();
+                for (const auto& raw : decls->fVars) {
+                    VarDeclaration& decl = (VarDeclaration&) *raw;
+                    if (needs_uniform_var(*decl.fVar)) {
+                        const char* name = decl.fVar->fName.c_str();
+                        this->writef("        UniformHandle& %s = %sVar;\n"
+                                     "        (void) %s;\n",
+                                     name, HCodeGenerator::FieldName(name).c_str(), name);
+                    } else if (SectionAndParameterHelper::IsParameter(*decl.fVar)) {
+                        const char* name = decl.fVar->fName.c_str();
+                        if (!wroteProcessor) {
+                            this->writef("        const %s& _outer = _proc.cast<%s>();\n", fullName,
+                                         fullName);
+                            wroteProcessor = true;
+                        }
+                        this->writef("        auto %s = _outer.%s();\n"
+                                     "        (void) %s;\n",
+                                     name, name, name);
+                    }
+                }
+            }
+        }
+        this->writeSection(SET_DATA_SECTION);
+    }
+    this->write("    }\n");
+}
+
+void CPPCodeGenerator::writeTest() {
+    const auto found = fSectionAndParameterHelper.fSections.find(TEST_CODE_SECTION);
+    if (found == fSectionAndParameterHelper.fSections.end()) {
+        return;
+    }
+    const Section* test = found->second;
+    this->writef("GR_DEFINE_FRAGMENT_PROCESSOR_TEST(%s);\n"
+                 "#if GR_TEST_UTILS\n"
+                 "sk_sp<GrFragmentProcessor> %s::TestCreate(GrProcessorTestData* %s) {\n",
+                 fFullName.c_str(),
+                 fFullName.c_str(),
+                 test->fArgument.c_str());
+    this->writeSection(TEST_CODE_SECTION);
+    this->write("}\n"
+                "#endif\n");
+}
+
+void CPPCodeGenerator::writeGetKey() {
+    this->writef("void %s::onGetGLSLProcessorKey(const GrShaderCaps& caps, "
+                                                "GrProcessorKeyBuilder* b) const {\n",
+                 fFullName.c_str());
+    for (const auto& param : fSectionAndParameterHelper.fParameters) {
+        const char* name = param->fName.c_str();
+        if (param->fType == *fContext.fColorSpaceXform_Type) {
+            this->writef("    b->add32(GrColorSpaceXform::XformKey(%s.get()));\n",
+                         HCodeGenerator::FieldName(name).c_str());
+            continue;
+        }
+        if (param->fModifiers.fLayout.fKey != Layout::kNo_Key &&
+            (param->fModifiers.fFlags & Modifiers::kUniform_Flag)) {
+            fErrors.error(param->fPosition,
+                          "layout(key) may not be specified on uniforms");
+        }
+        switch (param->fModifiers.fLayout.fKey) {
+            case Layout::kKey_Key:
+                if (param->fType == *fContext.fMat4x4_Type) {
+                    ABORT("no automatic key handling for mat4\n");
+                } else if (param->fType == *fContext.fVec2_Type) {
+                    this->writef("    b->add32(%s.fX);\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                    this->writef("    b->add32(%s.fY);\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                } else if (param->fType == *fContext.fVec4_Type) {
+                    this->writef("    b->add32(%s.x());\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                    this->writef("    b->add32(%s.y());\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                    this->writef("    b->add32(%s.width());\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                    this->writef("    b->add32(%s.height());\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                } else {
+                    this->writef("    b->add32(%s);\n",
+                                 HCodeGenerator::FieldName(name).c_str());
+                }
+                break;
+            case Layout::kIdentity_Key:
+                if (param->fType.kind() != Type::kMatrix_Kind) {
+                    fErrors.error(param->fPosition,
+                                  "layout(key=identity) requires matrix type");
+                }
+                this->writef("    b->add32(%s.isIdentity() ? 1 : 0);\n",
+                             HCodeGenerator::FieldName(name).c_str());
+                break;
+            case Layout::kNo_Key:
+                break;
+        }
+    }
+    this->write("}\n");
+}
+
+bool CPPCodeGenerator::generateCode() {
+    std::vector<const Variable*> uniforms;
+    for (const auto& p : fProgram.fElements) {
+        if (ProgramElement::kVar_Kind == p->fKind) {
+            const VarDeclarations* decls = (const VarDeclarations*) p.get();
+            for (const auto& raw : decls->fVars) {
+                VarDeclaration& decl = (VarDeclaration&) *raw;
+                if ((decl.fVar->fModifiers.fFlags & Modifiers::kUniform_Flag) &&
+                           decl.fVar->fType.kind() != Type::kSampler_Kind) {
+                    uniforms.push_back(decl.fVar);
+                }
+            }
+        }
+    }
+    const char* baseName = fName.c_str();
+    const char* fullName = fFullName.c_str();
+    this->writef("/*\n"
+                 " * This file was autogenerated from %s.fp.\n"
+                 " */\n"
+                 "#include \"%s.h\"\n"
+                 "#include \"glsl/GrGLSLColorSpaceXformHelper.h\"\n"
+                 "#include \"glsl/GrGLSLFragmentProcessor.h\"\n"
+                 "#include \"glsl/GrGLSLFragmentShaderBuilder.h\"\n"
+                 "#include \"glsl/GrGLSLProgramBuilder.h\"\n"
+                 "#include \"GrResourceProvider.h\"\n"
+                 "#include \"SkSLCPP.h\"\n"
+                 "#include \"SkSLUtil.h\"\n"
+                 "class GrGLSL%s : public GrGLSLFragmentProcessor {\n"
+                 "public:\n"
+                 "    GrGLSL%s() {}\n",
+                 fullName, fullName, baseName, baseName);
+    bool result = this->writeEmitCode(uniforms);
+    this->write("private:\n");
+    this->writeSetData(uniforms);
+    this->writePrivateVars();
+    for (const auto& u : uniforms) {
+        const char* name = u->fName.c_str();
+        if (needs_uniform_var(*u) && !(u->fModifiers.fFlags & Modifiers::kIn_Flag)) {
+            this->writef("    UniformHandle %sVar;\n", HCodeGenerator::FieldName(name).c_str());
+        }
+    }
+    for (const auto& param : fSectionAndParameterHelper.fParameters) {
+        const char* name = param->fName.c_str();
+        if (needs_uniform_var(*param)) {
+            this->writef("    UniformHandle %sVar;\n", HCodeGenerator::FieldName(name).c_str());
+        }
+    }
+    if (fNeedColorSpaceHelper) {
+        this->write("    GrGLSLColorSpaceXformHelper fColorSpaceHelper;\n");
+    }
+    this->writef("};\n"
+                 "GrGLSLFragmentProcessor* %s::onCreateGLSLInstance() const {\n"
+                 "    return new GrGLSL%s();\n"
+                 "}\n",
+                 fullName, baseName);
+    this->writeGetKey();
+    this->writef("bool %s::onIsEqual(const GrFragmentProcessor& other) const {\n"
+                 "    const %s& that = other.cast<%s>();\n"
+                 "    (void) that;\n",
+                 fullName, fullName, fullName);
+    for (const auto& param : fSectionAndParameterHelper.fParameters) {
+        const char* name = param->fName.c_str();
+        this->writef("    if (%s != that.%s) return false;\n",
+                     HCodeGenerator::FieldName(name).c_str(),
+                     HCodeGenerator::FieldName(name).c_str());
+    }
+    this->write("    return true;\n"
+                "}\n");
+    this->writeSection(CPP_SECTION);
+    this->writeTest();
+    result &= 0 == fErrors.errorCount();
+    return result;
+}
+
+} // namespace