Cleanup of shader building system

src/gpu/gl/builders/GrGLProgramBuilder.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "GrGLProgramBuilder.h"
+#include "gl/GrGLGeometryProcessor.h"
 #include "gl/GrGLProgram.h"
 #include "gl/GrGLSLPrettyPrint.h"
 #include "gl/GrGLUniformHandle.h"
+#include "../GrGpuGL.h"
 #include "GrCoordTransform.h"
-#include "../GrGpuGL.h"
-#include "GrGLFragmentShaderBuilder.h"
-#include "GrGLProgramBuilder.h"
+#include "GrGLESNvprProgramBuilder.h"
+#include "GrGLNvprProgramBuilder.h"
+#include "GrGLSkiaProgramBuilder.h"
 #include "GrTexture.h"
-#include "GrGLVertexShaderBuilder.h"
 #include "SkRTConf.h"
 #include "SkTraceEvent.h"
 
-namespace {
 #define GL_CALL(X) GR_GL_CALL(this->gpu()->glInterface(), X)
 #define GL_CALL_RET(R, X) GR_GL_CALL_RET(this->gpu()->glInterface(), R, X)
 
-// number of each input/output type in a single allocation block
-static const int kVarsPerBlock = 8;
-
 // ES2 FS only guarantees mediump and lowp support
 static const GrGLShaderVar::Precision kDefaultFragmentPrecision = GrGLShaderVar::kMedium_Precision;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-bool GrGLProgramBuilder::genProgram(const GrGeometryStage* geometryProcessor,
-                                    const GrFragmentStage* colorStages[],
-                                    const GrFragmentStage* coverageStages[]) {
-    const GrGLProgramDesc::KeyHeader& header = this->desc().getHeader();
-
-    fFS.emitCodeBeforeEffects();
-
-    ///////////////////////////////////////////////////////////////////////////
-    // get the initial color and coverage to feed into the first effect in each effect chain
-
-    GrGLSLExpr4 inputColor;
-    GrGLSLExpr4 inputCoverage;
-
-    if (GrGLProgramDesc::kUniform_ColorInput == header.fColorInput) {
-        const char* name;
-        fUniformHandles.fColorUni =
-            this->addUniform(GrGLProgramBuilder::kFragment_Visibility,
-                             kVec4f_GrSLType,
-                             "Color",
-                             &name);
-        inputColor = GrGLSLExpr4(name);
-    } else if (GrGLProgramDesc::kAllOnes_ColorInput == header.fColorInput) {
-        inputColor = GrGLSLExpr4(1);
-    }
-
-    if (GrGLProgramDesc::kUniform_ColorInput == header.fCoverageInput) {
-        const char* name;
-        fUniformHandles.fCoverageUni =
-            this->addUniform(GrGLProgramBuilder::kFragment_Visibility,
-                             kVec4f_GrSLType,
-                             "Coverage",
-                             &name);
-        inputCoverage = GrGLSLExpr4(name);
-    } else if (GrGLProgramDesc::kAllOnes_ColorInput == header.fCoverageInput) {
-        inputCoverage = GrGLSLExpr4(1);
-    }
-
-    // Subclasses drive effect emitting
-    this->createAndEmitEffects(geometryProcessor, colorStages, coverageStages, &inputColor,
-                               &inputCoverage);
-
-    fFS.emitCodeAfterEffects(inputColor, inputCoverage);
-
-    if (!this->finish()) {
-        return false;
-    }
-
-    return true;
-}
 
 //////////////////////////////////////////////////////////////////////////////
 
+const int GrGLProgramBuilder::kVarsPerBlock = 8;
+
+GrGLProgram* GrGLProgramBuilder::CreateProgram(const GrGLProgramDesc& desc,
+                                               GrGpu::DrawType drawType,
+                                               const GrGeometryStage* geometryProcessor,
+                                               const GrFragmentStage* colorStages[],
+                                               const GrFragmentStage* coverageStages[],
+                                               GrGpuGL* gpu) {
+    // create a builder.  This will be handed off to effects so they can use it to add
+    // uniforms, varyings, textures, etc
+    SkAutoTDelete<GrGLProgramBuilder> builder(CreateProgramBuilder(desc,
+                                                                   drawType,
+                                                                   SkToBool(geometryProcessor),
+                                                                   gpu));
+
+    GrGLProgramBuilder* pb = builder.get();
+    const GrGLProgramDesc::KeyHeader& header = pb->header();
+
+    // emit code to read the dst copy texture, if necessary
+    if (GrGLFragmentShaderBuilder::kNoDstRead_DstReadKey != header.fDstReadKey
+            && !gpu->glCaps().fbFetchSupport()) {
+        pb->fFS.emitCodeToReadDstTexture();
+    }
+
+    // On any post 1.10 GLSL supporting GPU, we declare custom output
+    if (k110_GrGLSLGeneration != gpu->glslGeneration()) {
+        pb->fFS.enableCustomOutput();
+    }
+
+    // get the initial color and coverage to feed into the first effect in each effect chain
+    GrGLSLExpr4 inputColor, inputCoverage;
+    pb->setupUniformColorIfNeeded(header.fColorInput, "Color", &inputColor);
+    pb->setupUniformColorIfNeeded(header.fCoverageInput, "Coverage", &inputCoverage);
+
+    // if we have a vertex shader(we don't only if we are using NVPR or NVPR ES), then we may have
+    // to setup a few more things like builtin vertex attributes
+    bool hasVertexShader = !header.fUseFragShaderOnly;
+    if (hasVertexShader) {
+        pb->fVS.setupLocalCoords();
+        pb->transformGLToSkiaCoords();
+        if (header.fEmitsPointSize) {
+            pb->fVS.codeAppend("gl_PointSize = 1.0;");
+        }
+        if (GrGLProgramDesc::kAttribute_ColorInput == header.fColorInput) {
+            pb->fVS.setupBuiltinVertexAttribute("Color", &inputColor);
+        }
+        if (GrGLProgramDesc::kAttribute_ColorInput == header.fCoverageInput) {
+            pb->fVS.setupBuiltinVertexAttribute("Coverage", &inputCoverage);
+        }
+    }
+
+    pb->createAndEmitProcessors(geometryProcessor, colorStages, coverageStages, &inputColor,
+                                &inputCoverage);
+
+    if (hasVertexShader) {
+        pb->transformSkiaToGLCoords();
+    }
+
+    // write the secondary color output if necessary
+    bool hasSecondaryOutput =
+            (GrOptDrawState::kNone_SecondaryOutputType != header.fSecondaryOutputType);
+    if (hasSecondaryOutput) {
+        pb->enableSecondaryOutput(inputColor, inputCoverage);
+    }
+
+    pb->combineColorAndCoverage(inputColor, inputCoverage);
+
+    return pb->compileBindLinkCreate();
+}
+
+GrGLProgramBuilder*
+GrGLProgramBuilder::CreateProgramBuilder(const GrGLProgramDesc& desc,
+                                         GrGpu::DrawType drawType,
+                                         bool hasGeometryProcessor,
+                                         GrGpuGL* gpu) {
+    if (desc.getHeader().fUseFragShaderOnly) {
+        SkASSERT(gpu->glCaps().pathRenderingSupport());
+        SkASSERT(gpu->glPathRendering()->texturingMode() ==
+                 GrGLPathRendering::FixedFunction_TexturingMode);
+        SkASSERT(!hasGeometryProcessor);
+        return SkNEW_ARGS(GrGLNvprProgramBuilder, (gpu, desc));
+    } else if (GrGpu::IsPathRenderingDrawType(drawType)) {
+        SkASSERT(gpu->glCaps().pathRenderingSupport());
+        SkASSERT(gpu->glPathRendering()->texturingMode() ==
+                 GrGLPathRendering::SeparableShaders_TexturingMode);
+        SkASSERT(!hasGeometryProcessor);
+        return SkNEW_ARGS(GrGLESNvprProgramBuilder, (gpu, desc));
+    } else {
+        return SkNEW_ARGS(GrGLSkiaProgramBuilder, (gpu, desc));
+    }
+}
+
+/////////////////////////////////////////////////////////////////////////////
+
 GrGLProgramBuilder::GrGLProgramBuilder(GrGpuGL* gpu,
                                        const GrGLProgramDesc& desc)
-    : fEffectEmitter(NULL)
-    , fFragOnly(SkToBool(desc.getHeader().fUseFragShaderOnly))
-    , fTexCoordSetCnt(0)
-    , fProgramID(0)
+    : fVS(this)
+    , fGS(this)
     , fFS(this, desc)
-    , fSeparableVaryingInfos(kVarsPerBlock)
-    , fGrProcessorEmitter(this)
+    , fOutOfStage(true)
+    , fStageIndex(-1)
     , fDesc(desc)
     , fGpu(gpu)
     , fUniforms(kVarsPerBlock) {
 }
 
+void GrGLProgramBuilder::addVarying(GrSLType type,
+                                    const char* name,
+                                    const char** vsOutName,
+                                    const char** fsInName,
+                                    GrGLShaderVar::Precision fsPrecision) {
+    SkString* fsInputName = fVS.addVarying(type, name, vsOutName);
+    fFS.addVarying(type, fsInputName->c_str(), fsInName, fsPrecision);
+}
+
 void GrGLProgramBuilder::nameVariable(SkString* out, char prefix, const char* name) {
     if ('\0' == prefix) {
         *out = name;
     } else {
         out->printf("%c%s", prefix, name);
     }
-    if (fCodeStage.inStageCode()) {
+    if (!fOutOfStage) {
         if (out->endsWith('_')) {
             // Names containing "__" are reserved.
             out->append("x");
         }
-        out->appendf("_Stage%d", fCodeStage.stageIndex());
+        out->appendf("_Stage%d", fStageIndex);
     }
 }
 
 GrGLProgramDataManager::UniformHandle GrGLProgramBuilder::addUniformArray(uint32_t visibility,
                                                                           GrSLType type,
                                                                           const char* name,
                                                                           int count,
                                                                           const char** outName) {
     SkASSERT(name && strlen(name));
     SkDEBUGCODE(static const uint32_t kVisibilityMask = kVertex_Visibility | kFragment_Visibility);
@@ skipping 14 matching lines @@
         // the fragment and vertex precisions must match
         uni.fVariable.setPrecision(kDefaultFragmentPrecision);
     }
 
     if (outName) {
         *outName = uni.fVariable.c_str();
     }
     return GrGLProgramDataManager::UniformHandle::CreateFromUniformIndex(fUniforms.count() - 1);
 }
 
-void GrGLProgramBuilder::appendDecls(const VarArray& vars, SkString* out) const {
-    for (int i = 0; i < vars.count(); ++i) {
-        vars[i].appendDecl(this->ctxInfo(), out);
-        out->append(";\n");
-    }
-}
-
 void GrGLProgramBuilder::appendUniformDecls(ShaderVisibility visibility,
                                             SkString* out) const {
     for (int i = 0; i < fUniforms.count(); ++i) {
         if (fUniforms[i].fVisibility & visibility) {
             fUniforms[i].fVariable.appendDecl(this->ctxInfo(), out);
             out->append(";\n");
         }
     }
 }
 
-void GrGLProgramBuilder::createAndEmitEffects(const GrFragmentStage* effectStages[],
-                                              int effectCnt,
-                                              const GrGLProgramDesc::EffectKeyProvider& keyProvider,
-                                              GrGLSLExpr4* fsInOutColor) {
+const GrGLContextInfo& GrGLProgramBuilder::ctxInfo() const {
+    return fGpu->ctxInfo();
+}
+
+void GrGLProgramBuilder::setupUniformColorIfNeeded(const GrGLProgramDesc::ColorInput& colorInput,
+                                                   const char* name,
+                                                   GrGLSLExpr4* input) {
+    if (GrGLProgramDesc::kUniform_ColorInput == colorInput) {
+        const char* uniformName;
+        this->fUniformHandles.fColorUni =
+            this->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+                             kVec4f_GrSLType,
+                             name,
+                             &uniformName);
+        *input = GrGLSLExpr4(uniformName);
+    } else if (GrGLProgramDesc::kAllOnes_ColorInput == colorInput) {
+        *input = GrGLSLExpr4(1);
+    }
+}
+
+void GrGLProgramBuilder::transformGLToSkiaCoords() {
+    const char* viewMName;
+    fUniformHandles.fViewMatrixUni = this->addUniform(GrGLProgramBuilder::kVertex_Visibility,
+                                                      kMat33f_GrSLType,
+                                                      "ViewM",
+                                                      &viewMName);
+
+    // Transform the position into Skia's device coords.
+    fVS.codeAppendf("vec3 pos3 = %s * vec3(%s, 1);", viewMName, fVS.positionAttribute().c_str());
+}
+
+void GrGLProgramBuilder::createAndEmitProcessors(const GrGeometryStage* geometryProcessor,
+                                                 const GrFragmentStage* colorStages[],
+                                                 const GrFragmentStage* coverageStages[],
+                                                 GrGLSLExpr4* inputColor,
+                                                 GrGLSLExpr4* inputCoverage) {
+    bool useLocalCoords = fVS.hasExplicitLocalCoords();
+
+    EffectKeyProvider colorKeyProvider(&fDesc, EffectKeyProvider::kColor_EffectType);
+    int numColorEffects = fDesc.numColorEffects();
+    GrGLInstalledProcessors* ip = SkNEW_ARGS(GrGLInstalledProcessors, (numColorEffects,
+                                                                       useLocalCoords));
+    this->createAndEmitProcessors<GrFragmentStage>(colorStages, numColorEffects, colorKeyProvider,
+                                                   inputColor, ip);
+    fColorEffects.reset(ip);
+
+    if (geometryProcessor) {
+        fVS.emitAttributes(*geometryProcessor->getProcessor());
+        EffectKeyProvider gpKeyProvider(&fDesc, EffectKeyProvider::kGeometryProcessor_EffectType);
+        ip = SkNEW_ARGS(GrGLInstalledProcessors, (1, useLocalCoords));
+        this->createAndEmitProcessors<GrGeometryStage>(&geometryProcessor, 1, gpKeyProvider,
+                                                       inputCoverage, ip);
+        fGeometryProcessor.reset(ip);
+    }
+
+    EffectKeyProvider coverageKeyProvider(&fDesc, EffectKeyProvider::kCoverage_EffectType);
+    int numCoverageEffects = fDesc.numCoverageEffects();
+    ip = SkNEW_ARGS(GrGLInstalledProcessors, (numCoverageEffects, useLocalCoords));
+    this->createAndEmitProcessors<GrFragmentStage>(coverageStages, numCoverageEffects,
+                                                   coverageKeyProvider, inputCoverage, ip);
+    fCoverageEffects.reset(ip);
+}
+
+template <class ProcessorStage>
+void GrGLProgramBuilder::createAndEmitProcessors(const ProcessorStage* processStages[],
+                                                 int effectCnt,
+                                                 const EffectKeyProvider& keyProvider,
+                                                 GrGLSLExpr4* fsInOutColor,
+                                                 GrGLInstalledProcessors* installedProcessors) {
     bool effectEmitted = false;
 
     GrGLSLExpr4 inColor = *fsInOutColor;
     GrGLSLExpr4 outColor;
 
     for (int e = 0; e < effectCnt; ++e) {
-        fGrProcessorEmitter.set(effectStages[e]->getFragmentProcessor());
-        fEffectEmitter = &fGrProcessorEmitter;
-        // calls into the subclass to emit the actual effect into the program effect object
-        this->emitEffect(*effectStages[e], e, keyProvider, &inColor, &outColor);
+        // Program builders have a bit of state we need to clear with each effect
+        this->reset();
+        const ProcessorStage& stage = *processStages[e];
+        SkASSERT(stage.getProcessor());
+
+        if (inColor.isZeros()) {
+            SkString inColorName;
+
+            // Effects have no way to communicate zeros, they treat an empty string as ones.
+            this->nameVariable(&inColorName, '\0', "input");
+            fFS.codeAppendf("vec4 %s = %s;", inColorName.c_str(), inColor.c_str());
+            inColor = inColorName;
+        }
+
+        // create var to hold stage result
+        SkString outColorName;
+        this->nameVariable(&outColorName, '\0', "output");
+        fFS.codeAppendf("vec4 %s;", outColorName.c_str());
+        outColor = outColorName;
+
+        SkASSERT(installedProcessors);
+        const typename ProcessorStage::Processor& processor = *stage.getProcessor();
+        SkSTArray<2, GrGLProcessor::TransformedCoords> coords(processor.numTransforms());
+        SkSTArray<4, GrGLProcessor::TextureSampler> samplers(processor.numTextures());
+
+        this->emitTransforms(stage, &coords, installedProcessors);
+        this->emitSamplers(processor, &samplers, installedProcessors);
+
+        typename ProcessorStage::GLProcessor* glEffect =
+                processor.getFactory().createGLInstance(processor);
+        installedProcessors->addEffect(glEffect);
+
+        // Enclose custom code in a block to avoid namespace conflicts
+        SkString openBrace;
+        openBrace.printf("{ // Stage %d: %s\n", fStageIndex, glEffect->name());
+        fFS.codeAppend(openBrace.c_str());
+
+        glEffect->emitCode(this, processor, keyProvider.get(e), outColor.c_str(), inColor.c_str(),
+                           coords, samplers);
+
+        // We have to check that effects and the code they emit are consistent, ie if an effect
+        // asks for dst color, then the emit code needs to follow suit
+        verify(processor);
+        fFS.codeAppend("}");
+
+        inColor = outColor;
         effectEmitted = true;
     }
 
     if (effectEmitted) {
         *fsInOutColor = outColor;
     }
 }
 
-void GrGLProgramBuilder::emitEffect(const GrProcessorStage& effectStage,
-                                    int effectIndex,
-                                    const GrGLProgramDesc::EffectKeyProvider& keyProvider,
-                                    GrGLSLExpr4* inColor,
-                                    GrGLSLExpr4* outColor) {
-    SkASSERT(effectStage.getProcessor());
-    CodeStage::AutoStageRestore csar(&fCodeStage, &effectStage);
-
-    if (inColor->isZeros()) {
-        SkString inColorName;
-
-        // Effects have no way to communicate zeros, they treat an empty string as ones.
-        this->nameVariable(&inColorName, '\0', "input");
-        fFS.codeAppendf("\tvec4 %s = %s;\n", inColorName.c_str(), inColor->c_str());
-        *inColor = inColorName;
-    }
-
-    // create var to hold stage result
-    SkString outColorName;
-    this->nameVariable(&outColorName, '\0', "output");
-    fFS.codeAppendf("\tvec4 %s;\n", outColorName.c_str());
-    *outColor = outColorName;
-
-    this->emitEffect(effectStage, keyProvider.get(effectIndex), outColor->c_str(),
-                     inColor->isOnes() ? NULL : inColor->c_str(), fCodeStage.stageIndex());
-
-    *inColor = *outColor;
+void GrGLProgramBuilder::verify(const GrGeometryProcessor& gp) {
+    SkASSERT(fFS.hasReadFragmentPosition() == gp.willReadFragmentPosition());
 }
 
-void GrGLProgramBuilder::emitSamplers(const GrProcessor& effect,
-                                      GrGLProcessor::TextureSamplerArray* outSamplers) {
-    SkTArray<GrGLProgramEffects::Sampler, true>& samplers =
-            this->getProgramEffects()->addSamplers();
-    int numTextures = effect.numTextures();
+void GrGLProgramBuilder::verify(const GrFragmentProcessor& fp) {
+    SkASSERT(fFS.hasReadFragmentPosition() == fp.willReadFragmentPosition());
+    SkASSERT(fFS.hasReadDstColor() == fp.willReadDstColor());
+}
+
+void GrGLProgramBuilder::emitSamplers(const GrProcessor& processor,
+                                      GrGLProcessor::TextureSamplerArray* outSamplers,
+                                      GrGLInstalledProcessors* installedProcessors) {
+    SkTArray<GrGLInstalledProcessors::Sampler, true>& samplers = installedProcessors->addSamplers();
+    int numTextures = processor.numTextures();
     samplers.push_back_n(numTextures);
     SkString name;
     for (int t = 0; t < numTextures; ++t) {
         name.printf("Sampler%d", t);
         samplers[t].fUniform = this->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                 kSampler2D_GrSLType,
                                                 name.c_str());
         SkNEW_APPEND_TO_TARRAY(outSamplers, GrGLProcessor::TextureSampler,
-                               (samplers[t].fUniform, effect.textureAccess(t)));
+                               (samplers[t].fUniform, processor.textureAccess(t)));
     }
 }
 
-bool GrGLProgramBuilder::finish() {
-    SkASSERT(0 == fProgramID);
-    GL_CALL_RET(fProgramID, CreateProgram());
-    if (!fProgramID) {
-        return false;
+void GrGLProgramBuilder::transformSkiaToGLCoords() {
+    const char* rtAdjustName;
+    fUniformHandles.fRTAdjustmentUni = this->addUniform(GrGLProgramBuilder::kVertex_Visibility,
+                                                        kVec4f_GrSLType,
+                                                        "rtAdjustment",
+                                                        &rtAdjustName);
+
+    // Transform from Skia's device coords to GL's normalized device coords.
+    fVS.codeAppendf("gl_Position = vec4(dot(pos3.xz, %s.xy), dot(pos3.yz, %s.zw), 0, pos3.z);",
+                    rtAdjustName, rtAdjustName);
+}
+
+void GrGLProgramBuilder::enableSecondaryOutput(const GrGLSLExpr4& inputColor,
+                                               const GrGLSLExpr4& inputCoverage) {
+    fFS.enableSecondaryOutput();
+    const char* secondaryOutputName = fFS.getSecondaryColorOutputName();
+    GrGLSLExpr4 coeff(1);
+    switch (this->header().fSecondaryOutputType) {
+        case GrOptDrawState::kCoverage_SecondaryOutputType:
+            break;
+        case GrOptDrawState::kCoverageISA_SecondaryOutputType:
+            // Get (1-A) into coeff
+            coeff = GrGLSLExpr4::VectorCast(GrGLSLExpr1(1) - inputColor.a());
+            break;
+        case GrOptDrawState::kCoverageISC_SecondaryOutputType:
+            // Get (1-RGBA) into coeff
+            coeff = GrGLSLExpr4(1) - inputColor;
+            break;
+        default:
+            SkFAIL("Unexpected Secondary Output");
+    }
+    // Get coeff * coverage into modulate and then write that to the dual source output.
+    fFS.codeAppendf("\t%s = %s;\n", secondaryOutputName, (coeff * inputCoverage).c_str());
+}
+
+void GrGLProgramBuilder::combineColorAndCoverage(const GrGLSLExpr4& inputColor,
+                                                 const GrGLSLExpr4& inputCoverage) {
+    GrGLSLExpr4 fragColor = inputColor * inputCoverage;
+    switch (this->header().fPrimaryOutputType) {
+        case GrOptDrawState::kModulate_PrimaryOutputType:
+            break;
+        case GrOptDrawState::kCombineWithDst_PrimaryOutputType:
+            {
+                // Tack on "+(1-coverage)dst onto the frag color.
+                GrGLSLExpr4 dstCoeff = GrGLSLExpr4(1) - inputCoverage;
+                GrGLSLExpr4 dstContribution = dstCoeff * GrGLSLExpr4(fFS.dstColor());
+                fragColor = fragColor + dstContribution;
+            }
+            break;
+        default:
+            SkFAIL("Unknown Primary Output");
+    }
+    fFS.codeAppendf("\t%s = %s;\n", fFS.getPrimaryColorOutputName(), fragColor.c_str());
+}
+
+
+GrGLProgram* GrGLProgramBuilder::compileBindLinkCreate() {
+    // verify we can get a program id
+    GrGLuint programID;
+    GL_CALL_RET(programID, CreateProgram());
+    if (0 == programID) {
+        return NULL;
     }
 
+    // compile shaders and bind attributes / uniforms
     SkTDArray<GrGLuint> shadersToDelete;
-
-    if (!this->compileAndAttachShaders(fProgramID, &shadersToDelete)) {
-        GL_CALL(DeleteProgram(fProgramID));
-        return false;
+    if (!fFS.compileAndAttachShaders(programID, &shadersToDelete)) {
+        this->cleanupProgram(programID, shadersToDelete);
+        return NULL;
     }
-
-    this->bindProgramLocations(fProgramID);
-
-    GL_CALL(LinkProgram(fProgramID));
+    if (!this->header().fUseFragShaderOnly) {
+        if (!fVS.compileAndAttachShaders(programID, &shadersToDelete)) {
+            this->cleanupProgram(programID, shadersToDelete);
+            return NULL;
+        }
+        fVS.bindVertexAttributes(programID);
+    }
+    bool usingBindUniform = fGpu->glInterface()->fFunctions.fBindUniformLocation != NULL;
+    if (usingBindUniform) {
+        this->bindUniformLocations(programID);
+    }
+    fFS.bindFragmentShaderLocations(programID);
+    GL_CALL(LinkProgram(programID));
 
     // Calling GetProgramiv is expensive in Chromium. Assume success in release builds.
     bool checkLinked = !fGpu->ctxInfo().isChromium();
 #ifdef SK_DEBUG
     checkLinked = true;
 #endif
     if (checkLinked) {
-        GrGLint linked = GR_GL_INIT_ZERO;
-        GL_CALL(GetProgramiv(fProgramID, GR_GL_LINK_STATUS, &linked));
-        if (!linked) {
-            GrGLint infoLen = GR_GL_INIT_ZERO;
-            GL_CALL(GetProgramiv(fProgramID, GR_GL_INFO_LOG_LENGTH, &infoLen));
-            SkAutoMalloc log(sizeof(char)*(infoLen+1));  // outside if for debugger
-            if (infoLen > 0) {
-                // retrieve length even though we don't need it to workaround
-                // bug in chrome cmd buffer param validation.
-                GrGLsizei length = GR_GL_INIT_ZERO;
-                GL_CALL(GetProgramInfoLog(fProgramID,
-                                          infoLen+1,
-                                          &length,
-                                          (char*)log.get()));
-                GrPrintf((char*)log.get());
-            }
-            SkDEBUGFAIL("Error linking program");
-            GL_CALL(DeleteProgram(fProgramID));
-            fProgramID = 0;
-            return false;
-        }
+        checkLinkStatus(programID);
+    }
+    if (!usingBindUniform) {
+        this->resolveUniformLocations(programID);
     }
 
-    this->resolveProgramLocations(fProgramID);
+    // Finally, this is just for nvpr es, which has separable varyings that are plugged in after
+    // building
+    this->resolveSeparableVaryings(programID);
 
-    for (int i = 0; i < shadersToDelete.count(); ++i) {
-      GL_CALL(DeleteShader(shadersToDelete[i]));
-    }
+    this->cleanupShaders(shadersToDelete);
 
-    return true;
+    return this->createProgram(programID);
 }
 
-bool GrGLProgramBuilder::compileAndAttachShaders(GrGLuint programId,
-                                                 SkTDArray<GrGLuint>* shaderIds) const {
-    return fFS.compileAndAttachShaders(programId, shaderIds);
-}
-
-void GrGLProgramBuilder::bindProgramLocations(GrGLuint programId) {
-    fFS.bindProgramLocations(programId);
-
-    // skbug.com/2056
-    bool usingBindUniform = fGpu->glInterface()->fFunctions.fBindUniformLocation != NULL;
-    if (usingBindUniform) {
-        int count = fUniforms.count();
-        for (int i = 0; i < count; ++i) {
-            GL_CALL(BindUniformLocation(programId, i, fUniforms[i].fVariable.c_str()));
-            fUniforms[i].fLocation = i;
-        }
+void GrGLProgramBuilder::bindUniformLocations(GrGLuint programID) {
+    int count = fUniforms.count();
+    for (int i = 0; i < count; ++i) {
+        GL_CALL(BindUniformLocation(programID, i, fUniforms[i].fVariable.c_str()));
+        fUniforms[i].fLocation = i;
     }
 }
 
-void GrGLProgramBuilder::resolveProgramLocations(GrGLuint programId) {
-    bool usingBindUniform = fGpu->glInterface()->fFunctions.fBindUniformLocation != NULL;
-    if (!usingBindUniform) {
-        int count = fUniforms.count();
-        for (int i = 0; i < count; ++i) {
-            GrGLint location;
-            GL_CALL_RET(location,
-                        GetUniformLocation(programId, fUniforms[i].fVariable.c_str()));
-            fUniforms[i].fLocation = location;
+bool GrGLProgramBuilder::checkLinkStatus(GrGLuint programID) {
+    GrGLint linked = GR_GL_INIT_ZERO;
+    GL_CALL(GetProgramiv(programID, GR_GL_LINK_STATUS, &linked));
+    if (!linked) {
+        GrGLint infoLen = GR_GL_INIT_ZERO;
+        GL_CALL(GetProgramiv(programID, GR_GL_INFO_LOG_LENGTH, &infoLen));
+        SkAutoMalloc log(sizeof(char)*(infoLen+1));  // outside if for debugger
+        if (infoLen > 0) {
+            // retrieve length even though we don't need it to workaround
+            // bug in chrome cmd buffer param validation.
+            GrGLsizei length = GR_GL_INIT_ZERO;
+            GL_CALL(GetProgramInfoLog(programID,
+                                      infoLen+1,
+                                      &length,
+                                      (char*)log.get()));
+            GrPrintf((char*)log.get());
         }
+        SkDEBUGFAIL("Error linking program");
+        GL_CALL(DeleteProgram(programID));
+        programID = 0;
     }
+    return SkToBool(linked);
+}
 
-    int count = fSeparableVaryingInfos.count();
+void GrGLProgramBuilder::resolveUniformLocations(GrGLuint programID) {
+    int count = fUniforms.count();
     for (int i = 0; i < count; ++i) {
         GrGLint location;
-        GL_CALL_RET(location,
-                    GetProgramResourceLocation(programId,
-                                               GR_GL_FRAGMENT_INPUT,
-                                               fSeparableVaryingInfos[i].fVariable.c_str()));
-        fSeparableVaryingInfos[i].fLocation = location;
+        GL_CALL_RET(location, GetUniformLocation(programID, fUniforms[i].fVariable.c_str()));
+        fUniforms[i].fLocation = location;
     }
 }
 
-const GrGLContextInfo& GrGLProgramBuilder::ctxInfo() const {
-    return fGpu->ctxInfo();
+void GrGLProgramBuilder::cleanupProgram(GrGLuint programID, const SkTDArray<GrGLuint>& shaderIDs) {
+    GL_CALL(DeleteProgram(programID));
+    cleanupShaders(shaderIDs);
 }
+void GrGLProgramBuilder::cleanupShaders(const SkTDArray<GrGLuint>& shaderIDs) {
+    for (int i = 0; i < shaderIDs.count(); ++i) {
+      GL_CALL(DeleteShader(shaderIDs[i]));
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+GrGLInstalledProcessors::~GrGLInstalledProcessors() {
+    int numEffects = fGLProcessors.count();
+    for (int e = 0; e < numEffects; ++e) {
+        SkDELETE(fGLProcessors[e]);
+    }
+}