Revert of Add constant color GrFP.

src/gpu/effects/GrConstColorProcessor.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "effects/GrConstColorProcessor.h"
-#include "gl/GrGLProcessor.h"
-#include "gl/GrGLSL.h"
-#include "gl/builders/GrGLProgramBuilder.h"
-
-class GLConstColorProcessor : public GrGLFragmentProcessor {
-public:
-    GLConstColorProcessor() : fPrevColor(GrColor_ILLEGAL) {}
-
-    void emitCode(GrGLFPBuilder* builder,
-                  const GrFragmentProcessor& fp,
-                  const char* outputColor,
-                  const char* inputColor,
-                  const TransformedCoordsArray& coords,
-                  const TextureSamplerArray& samplers) override {
-        GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
-        const char* colorUni;
-        fColorUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
-                                            kVec4f_GrSLType, kMedium_GrSLPrecision, "constantColor",
-                                            &colorUni);
-        switch (fp.cast<GrConstColorProcessor>().inputMode()) {
-            case GrConstColorProcessor::kIgnore_InputMode:
-                fsBuilder->codeAppendf("%s = %s;", outputColor, colorUni);
-                break;
-            case GrConstColorProcessor::kModulateRGBA_InputMode:
-                fsBuilder->codeAppendf("%s = %s * %s;", outputColor, inputColor, colorUni);
-                break;
-            case GrConstColorProcessor::kModulateA_InputMode:
-                fsBuilder->codeAppendf("%s = %s.a * %s;", outputColor, inputColor, colorUni);
-                break;
-        }
-    }
-
-    void setData(const GrGLProgramDataManager& pdm, const GrProcessor& processor) override {
-        GrColor color = processor.cast<GrConstColorProcessor>().color();
-        // We use the "illegal" color value as an uninit sentinel. However, ut isn't inherently
-        // illegal to use this processor with unpremul colors. So we correctly handle the case
-        // when the "illegal" color is used but we will always upload it.
-        if (GrColor_ILLEGAL == color || fPrevColor != color) {
-            static const GrGLfloat scale = 1.f / 255.f;
-            GrGLfloat floatColor[4] = {
-                GrColorUnpackR(color) * scale,
-                GrColorUnpackG(color) * scale,
-                GrColorUnpackB(color) * scale,
-                GrColorUnpackA(color) * scale,
-            };
-            pdm.set4fv(fColorUniform, 1, floatColor);
-            fPrevColor = color;
-        }
-    }
-
-private:
-    GrGLProgramDataManager::UniformHandle fColorUniform;
-    GrColor                               fPrevColor;
-
-    typedef GrGLFragmentProcessor INHERITED;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-void GrConstColorProcessor::onComputeInvariantOutput(GrInvariantOutput* inout) const {
-    if (kIgnore_InputMode == fMode) {
-        inout->setToOther(kRGBA_GrColorComponentFlags, fColor, GrInvariantOutput::kWill_ReadInput);
-    } else {
-        GrColor r = GrColorUnpackR(fColor);
-        bool colorIsSingleChannel = r == GrColorUnpackG(fColor) && r == GrColorUnpackB(fColor) &&
-                                    r == GrColorUnpackA(fColor);
-        if (kModulateRGBA_InputMode == fMode) {
-            if (colorIsSingleChannel) {
-                inout->mulByKnownSingleComponent(r);
-            } else {
-                inout->mulByKnownFourComponents(fColor);
-            }
-        } else {
-            if (colorIsSingleChannel) {
-                inout->mulAlphaByKnownSingleComponent(r);
-            } else {
-                inout->mulAlphaByKnownFourComponents(fColor);
-            }
-        }
-    }
-}
-
-void GrConstColorProcessor::getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder* b) const {
-    b->add32(fMode);
-}
-
-GrGLFragmentProcessor* GrConstColorProcessor::createGLInstance() const  {
-    return SkNEW(GLConstColorProcessor);
-}
-
-bool GrConstColorProcessor::onIsEqual(const GrFragmentProcessor& other) const {
-    const GrConstColorProcessor& that = other.cast<GrConstColorProcessor>();
-    return fMode == that.fMode && fColor == that.fColor;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrConstColorProcessor);
-
-GrFragmentProcessor* GrConstColorProcessor::TestCreate(SkRandom* random,
-                                                       GrContext*,
-                                                       const GrDrawTargetCaps&,
-                                                       GrTexture*[]) {
-    GrColor color;
-    int colorPicker = random->nextULessThan(3);
-    switch (colorPicker) {
-        case 0: {
-            uint32_t a = random->nextULessThan(0x100);
-            uint32_t r = random->nextULessThan(a+1);
-            uint32_t g = random->nextULessThan(a+1);
-            uint32_t b = random->nextULessThan(a+1);
-            color = GrColorPackRGBA(r, g, b, a);
-            break;
-        }
-        case 1:
-            color = 0;
-            break;
-        case 2:
-            color = random->nextULessThan(0x100);
-            color = color | (color << 8) | (color << 16) | (color << 24);
-            break;
-    }
-    InputMode mode = static_cast<InputMode>(random->nextULessThan(kInputModeCnt));
-    return GrConstColorProcessor::Create(color, mode);
-}