Revert of Cleanup of shader building system

src/gpu/gl/GrGLProgramEffects.cpp

+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrGLProgramEffects.h"
+#include "gl/GrGLProcessor.h"
+#include "gl/GrGLPathRendering.h"
+#include "gl/builders/GrGLFullProgramBuilder.h"
+#include "gl/builders/GrGLFragmentOnlyProgramBuilder.h"
+#include "gl/GrGLGeometryProcessor.h"
+#include "gl/GrGpuGL.h"
+
+typedef GrGLProcessor::TransformedCoords TransformedCoords;
+typedef GrGLProcessor::TransformedCoordsArray TransformedCoordsArray;
+typedef GrGLProcessor::TextureSampler TextureSampler;
+typedef GrGLProcessor::TextureSamplerArray TextureSamplerArray;
+
+namespace {
+/**
+ * Retrieves the final matrix that a transform needs to apply to its source coords.
+ */
+SkMatrix get_transform_matrix(const GrProcessorStage& effectStage,
+                              bool useExplicitLocalCoords,
+                              int transformIdx) {
+    const GrCoordTransform& coordTransform = effectStage.getProcessor()->coordTransform(transformIdx);
+    SkMatrix combined;
+
+    if (kLocal_GrCoordSet == coordTransform.sourceCoords()) {
+        // If we have explicit local coords then we shouldn't need a coord change.
+        const SkMatrix& ccm =
+                useExplicitLocalCoords ? SkMatrix::I() : effectStage.getCoordChangeMatrix();
+        combined.setConcat(coordTransform.getMatrix(), ccm);
+    } else {
+        combined = coordTransform.getMatrix();
+    }
+    if (coordTransform.reverseY()) {
+        // combined.postScale(1,-1);
+        // combined.postTranslate(0,1);
+        combined.set(SkMatrix::kMSkewY,
+            combined[SkMatrix::kMPersp0] - combined[SkMatrix::kMSkewY]);
+        combined.set(SkMatrix::kMScaleY,
+            combined[SkMatrix::kMPersp1] - combined[SkMatrix::kMScaleY]);
+        combined.set(SkMatrix::kMTransY,
+            combined[SkMatrix::kMPersp2] - combined[SkMatrix::kMTransY]);
+    }
+    return combined;
+}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+GrGLProgramEffects::~GrGLProgramEffects() {
+    int numEffects = fGLProcessors.count();
+    for (int e = 0; e < numEffects; ++e) {
+        SkDELETE(fGLProcessors[e]);
+    }
+}
+
+void GrGLProgramEffects::initSamplers(const GrGLProgramDataManager& programResourceManager, int* texUnitIdx) {
+    int numEffects = fGLProcessors.count();
+    SkASSERT(numEffects == fSamplers.count());
+    for (int e = 0; e < numEffects; ++e) {
+        SkTArray<Sampler, true>& samplers = fSamplers[e];
+        int numSamplers = samplers.count();
+        for (int s = 0; s < numSamplers; ++s) {
+            SkASSERT(samplers[s].fUniform.isValid());
+            programResourceManager.setSampler(samplers[s].fUniform, *texUnitIdx);
+            samplers[s].fTextureUnit = (*texUnitIdx)++;
+        }
+    }
+}
+
+void GrGLProgramEffects::bindTextures(GrGpuGL* gpu, const GrProcessor& effect, int effectIdx) {
+    const SkTArray<Sampler, true>& samplers = fSamplers[effectIdx];
+    int numSamplers = samplers.count();
+    SkASSERT(numSamplers == effect.numTextures());
+    for (int s = 0; s < numSamplers; ++s) {
+        SkASSERT(samplers[s].fTextureUnit >= 0);
+        const GrTextureAccess& textureAccess = effect.textureAccess(s);
+        gpu->bindTexture(samplers[s].fTextureUnit,
+                         textureAccess.getParams(),
+                         static_cast<GrGLTexture*>(textureAccess.getTexture()));
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+void GrGLVertexProgramEffects::setData(GrGpuGL* gpu,
+                                       GrGpu::DrawType drawType,
+                                       const GrGLProgramDataManager& programDataManager,
+                                       const GrGeometryStage* effectStages) {
+    SkASSERT(1 == fGLProcessors.count());
+    SkASSERT(1 == fTransforms.count());
+    SkASSERT(1 == fSamplers.count());
+    this->setDataInternal(gpu, drawType, programDataManager, *effectStages, 0);
+}
+
+void GrGLVertexProgramEffects::setData(GrGpuGL* gpu,
+                                       GrGpu::DrawType drawType,
+                                       const GrGLProgramDataManager& programDataManager,
+                                       const GrFragmentStage* effectStages[]) {
+    int numEffects = fGLProcessors.count();
+    SkASSERT(numEffects == fTransforms.count());
+    SkASSERT(numEffects == fSamplers.count());
+    for (int e = 0; e < numEffects; ++e) {
+        this->setDataInternal(gpu, drawType, programDataManager, *effectStages[e], e);
+    }
+}
+
+void GrGLVertexProgramEffects::setDataInternal(GrGpuGL* gpu,
+                                               GrGpu::DrawType drawType,
+                                               const GrGLProgramDataManager& programDataManager,
+                                               const GrProcessorStage& effectStage,
+                                               int index) {
+    const GrProcessor& effect = *effectStage.getProcessor();
+    fGLProcessors[index]->setData(programDataManager, effect);
+    if (GrGpu::IsPathRenderingDrawType(drawType)) {
+        this->setPathTransformData(gpu, programDataManager, effectStage, index);
+    } else {
+        this->setTransformData(gpu, programDataManager, effectStage, index);
+    }
+    this->bindTextures(gpu, effect, index);
+}
+
+void GrGLVertexProgramEffects::setTransformData(GrGpuGL* gpu,
+                                                const GrGLProgramDataManager& pdman,
+                                                const GrProcessorStage& effectStage,
+                                                int effectIdx) {
+    SkTArray<Transform, true>& transforms = fTransforms[effectIdx];
+    int numTransforms = transforms.count();
+    SkASSERT(numTransforms == effectStage.getProcessor()->numTransforms());
+    for (int t = 0; t < numTransforms; ++t) {
+        SkASSERT(transforms[t].fHandle.isValid());
+        const SkMatrix& matrix = get_transform_matrix(effectStage, fHasExplicitLocalCoords, t);
+        if (!transforms[t].fCurrentValue.cheapEqualTo(matrix)) {
+            pdman.setSkMatrix(transforms[t].fHandle, matrix);
+            transforms[t].fCurrentValue = matrix;
+        }
+    }
+}
+
+void GrGLVertexProgramEffects::setPathTransformData(GrGpuGL* gpu,
+                                                    const GrGLProgramDataManager& pdman,
+                                                    const GrProcessorStage& effectStage,
+                                                    int effectIdx) {
+    SkTArray<PathTransform, true>& transforms = fPathTransforms[effectIdx];
+    int numTransforms = transforms.count();
+    SkASSERT(numTransforms == effectStage.getProcessor()->numTransforms());
+    for (int t = 0; t < numTransforms; ++t) {
+        SkASSERT(transforms[t].fHandle.isValid());
+        const SkMatrix& transform = get_transform_matrix(effectStage, fHasExplicitLocalCoords, t);
+        if (transforms[t].fCurrentValue.cheapEqualTo(transform)) {
+            continue;
+        }
+        transforms[t].fCurrentValue = transform;
+        switch (transforms[t].fType) {
+            case kVec2f_GrSLType:
+                pdman.setProgramPathFragmentInputTransform(transforms[t].fHandle, 2, transform);
+                break;
+            case kVec3f_GrSLType:
+                pdman.setProgramPathFragmentInputTransform(transforms[t].fHandle, 3, transform);
+                break;
+            default:
+                SkFAIL("Unexpected matrix type.");
+        }
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+void GrGLPathTexGenProgramEffects::setData(GrGpuGL* gpu,
+                                           GrGpu::DrawType,
+                                           const GrGLProgramDataManager& pdman,
+                                           const GrFragmentStage* effectStages[]) {
+    int numEffects = fGLProcessors.count();
+    SkASSERT(numEffects == fTransforms.count());
+    SkASSERT(numEffects == fSamplers.count());
+    for (int e = 0; e < numEffects; ++e) {
+        const GrProcessorStage& effectStage = *effectStages[e];
+        const GrProcessor& effect = *effectStage.getProcessor();
+        fGLProcessors[e]->setData(pdman, effect);
+        this->setPathTexGenState(gpu, effectStage, e);
+        this->bindTextures(gpu, effect, e);
+    }
+}
+
+void GrGLPathTexGenProgramEffects::setPathTexGenState(GrGpuGL* gpu,
+                                              const GrProcessorStage& effectStage,
+                                              int effectIdx) {
+    int texCoordIndex = fTransforms[effectIdx].fTexCoordIndex;
+    int numTransforms = effectStage.getProcessor()->numTransforms();
+    for (int t = 0; t < numTransforms; ++t) {
+        const SkMatrix& transform = get_transform_matrix(effectStage, false, t);
+        GrGLPathRendering::PathTexGenComponents components =
+                GrGLPathRendering::kST_PathTexGenComponents;
+        if (effectStage.isPerspectiveCoordTransform(t, false)) {
+            components = GrGLPathRendering::kSTR_PathTexGenComponents;
+        }
+        gpu->glPathRendering()->enablePathTexGen(texCoordIndex++, components, transform);
+    }
+}