Make GPU coord transforms automatic

src/effects/SkMorphologyImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMorphologyImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkFlattenableBuffers.h"
 #include "SkRect.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #include "GrTexture.h"
 #include "GrTBackendEffectFactory.h"
 #include "gl/GrGLEffect.h"
-#include "gl/GrGLEffectMatrix.h"
 #include "effects/Gr1DKernelEffect.h"
 #include "SkImageFilterUtils.h"
 #endif
 
 SkMorphologyImageFilter::SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer)
   : INHERITED(buffer) {
     fRadius.fWidth = buffer.readInt();
     fRadius.fHeight = buffer.readInt();
 }
 
@@ skipping 278 matching lines @@
 
 class GrGLMorphologyEffect : public GrGLEffect {
 public:
     GrGLMorphologyEffect (const GrBackendEffectFactory&, const GrDrawEffect&);
 
     virtual void emitCode(GrGLShaderBuilder*,
                           const GrDrawEffect&,
                           EffectKey,
                           const char* outputColor,
                           const char* inputColor,
+                          const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
     static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&);
 
     virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 private:
     int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); }
 
     int                                 fRadius;
     GrMorphologyEffect::MorphologyType  fType;
     GrGLUniformManager::UniformHandle   fImageIncrementUni;
-    GrGLEffectMatrix                    fEffectMatrix;
 
     typedef GrGLEffect INHERITED;
 };
 
 GrGLMorphologyEffect::GrGLMorphologyEffect(const GrBackendEffectFactory& factory,
                                            const GrDrawEffect& drawEffect)
-    : INHERITED(factory)
-    , fEffectMatrix(drawEffect.castEffect<GrMorphologyEffect>().coordsType()) {
+    : INHERITED(factory) {
     const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>();
     fRadius = m.radius();
     fType = m.type();
 }
 
 void GrGLMorphologyEffect::emitCode(GrGLShaderBuilder* builder,
                                     const GrDrawEffect&,
                                     EffectKey key,
                                     const char* outputColor,
                                     const char* inputColor,
+                                    const TransformedCoordsArray& coords,
                                     const TextureSamplerArray& samplers) {
-    SkString coords;
-    fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords);
+    SkString coords2D = builder->ensureFSCoords2D(coords, 0);
     fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility,
                                              kVec2f_GrSLType, "ImageIncrement");
 
     const char* func;
     switch (fType) {
         case GrMorphologyEffect::kErode_MorphologyType:
             builder->fsCodeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", outputColor);
             func = "min";
             break;
         case GrMorphologyEffect::kDilate_MorphologyType:
             builder->fsCodeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor);
             func = "max";
             break;
         default:
             GrCrash("Unexpected type");
             func = ""; // suppress warning
             break;
     }
     const char* imgInc = builder->getUniformCStr(fImageIncrementUni);
 
-    builder->fsCodeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords.c_str(), fRadius, imgInc);
+    builder->fsCodeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(), fRadius, imgInc);
     builder->fsCodeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", this->width());
     builder->fsCodeAppendf("\t\t\t%s = %s(%s, ", outputColor, func, outputColor);
     builder->fsAppendTextureLookup(samplers[0], "coord");
     builder->fsCodeAppend(");\n");
     builder->fsCodeAppendf("\t\t\tcoord += %s;\n", imgInc);
     builder->fsCodeAppend("\t\t}\n");
     SkString modulate;
     GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor);
     builder->fsCodeAppend(modulate.c_str());
 }
 
 GrGLEffect::EffectKey GrGLMorphologyEffect::GenKey(const GrDrawEffect& drawEffect,
                                                    const GrGLCaps&) {
     const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>();
     EffectKey key = static_cast<EffectKey>(m.radius());
     key |= (m.type() << 8);
-    key <<= GrGLEffectMatrix::kKeyBits;
-    EffectKey matrixKey = GrGLEffectMatrix::GenKey(m.getMatrix(),
-                                                   drawEffect,
-                                                   m.coordsType(),
-                                                   m.texture(0));
-    return key | matrixKey;
+    return key;
 }
 
 void GrGLMorphologyEffect::setData(const GrGLUniformManager& uman,
                                    const GrDrawEffect& drawEffect) {
     const Gr1DKernelEffect& kern = drawEffect.castEffect<Gr1DKernelEffect>();
     GrTexture& texture = *kern.texture(0);
     // the code we generated was for a specific kernel radius
     SkASSERT(kern.radius() == fRadius);
     float imageIncrement[2] = { 0 };
     switch (kern.direction()) {
         case Gr1DKernelEffect::kX_Direction:
             imageIncrement[0] = 1.0f / texture.width();
             break;
         case Gr1DKernelEffect::kY_Direction:
             imageIncrement[1] = 1.0f / texture.height();
             break;
         default:
             GrCrash("Unknown filter direction.");
     }
     uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement);
-    fEffectMatrix.setData(uman, kern.getMatrix(), drawEffect, kern.texture(0));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture,
                                        Direction direction,
                                        int radius,
                                        MorphologyType type)
     : Gr1DKernelEffect(texture, direction, radius)
     , fType(type) {
@@ skipping 164 matching lines @@
 
     if (!apply_morphology(input, bounds, GrMorphologyEffect::kErode_MorphologyType, radius(), result)) {
         return false;
     }
     offset->fX += bounds.left();
     offset->fY += bounds.top();
     return true;
 }
 
 #endif