Initial refactor of shaderbuilder

src/effects/SkMagnifierImageFilter.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 "SkBitmap.h"
 #include "SkMagnifierImageFilter.h"
 #include "SkColorPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkValidationUtils.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 #if SK_SUPPORT_GPU
 #include "effects/GrSingleTextureEffect.h"
 #include "gl/GrGLEffect.h"
-#include "gl/GrGLShaderBuilder.h"
+#include "gl/builders/GrGLProgramBuilder.h"
 #include "gl/GrGLSL.h"
 #include "gl/GrGLTexture.h"
 #include "GrTBackendEffectFactory.h"
 
 class GrGLMagnifierEffect;
 
 class GrMagnifierEffect : public GrSingleTextureEffect {
 
 public:
     static GrEffect* Create(GrTexture* texture,
@@ skipping 58 matching lines @@
     typedef GrSingleTextureEffect INHERITED;
 };
 
 // For brevity
 typedef GrGLProgramDataManager::UniformHandle UniformHandle;
 
 class GrGLMagnifierEffect : public GrGLEffect {
 public:
     GrGLMagnifierEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
 
-    virtual void emitCode(GrGLShaderBuilder*,
+    virtual void emitCode(GrGLProgramBuilder*,
                           const GrDrawEffect&,
                           const GrEffectKey&,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
     virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 private:
     UniformHandle       fOffsetVar;
     UniformHandle       fInvZoomVar;
     UniformHandle       fInvInsetVar;
 
     typedef GrGLEffect INHERITED;
 };
 
 GrGLMagnifierEffect::GrGLMagnifierEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
     : INHERITED(factory) {
 }
 
-void GrGLMagnifierEffect::emitCode(GrGLShaderBuilder* builder,
+void GrGLMagnifierEffect::emitCode(GrGLProgramBuilder* builder,
                                    const GrDrawEffect&,
                                    const GrEffectKey& key,
                                    const char* outputColor,
                                    const char* inputColor,
                                    const TransformedCoordsArray& coords,
                                    const TextureSamplerArray& samplers) {
-    SkString coords2D = builder->ensureFSCoords2D(coords, 0);
     fOffsetVar = builder->addUniform(
-        GrGLShaderBuilder::kFragment_Visibility |
-        GrGLShaderBuilder::kVertex_Visibility,
+        GrGLProgramBuilder::kFragment_Visibility |
+        GrGLProgramBuilder::kVertex_Visibility,
         kVec2f_GrSLType, "Offset");
     fInvZoomVar = builder->addUniform(
-        GrGLShaderBuilder::kFragment_Visibility |
-        GrGLShaderBuilder::kVertex_Visibility,
+        GrGLProgramBuilder::kFragment_Visibility |
+        GrGLProgramBuilder::kVertex_Visibility,
         kVec2f_GrSLType, "InvZoom");
     fInvInsetVar = builder->addUniform(
-        GrGLShaderBuilder::kFragment_Visibility |
-        GrGLShaderBuilder::kVertex_Visibility,
+        GrGLProgramBuilder::kFragment_Visibility |
+        GrGLProgramBuilder::kVertex_Visibility,
         kVec2f_GrSLType, "InvInset");
 
-    builder->fsCodeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
-    builder->fsCodeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n",
+    GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+    SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0);
+    fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
+    fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n",
                            builder->getUniformCStr(fOffsetVar),
                            coords2D.c_str(),
                            builder->getUniformCStr(fInvZoomVar));
 
-    builder->fsCodeAppend("\t\tvec2 delta = min(coord, vec2(1.0, 1.0) - coord);\n");
+    fsBuilder->codeAppend("\t\tvec2 delta = min(coord, vec2(1.0, 1.0) - coord);\n");
 
-    builder->fsCodeAppendf("\t\tdelta = delta * %s;\n", builder->getUniformCStr(fInvInsetVar));
+    fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", builder->getUniformCStr(fInvInsetVar));
 
-    builder->fsCodeAppend("\t\tfloat weight = 0.0;\n");
-    builder->fsCodeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n");
-    builder->fsCodeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n");
-    builder->fsCodeAppend("\t\t\tfloat dist = length(delta);\n");
-    builder->fsCodeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n");
-    builder->fsCodeAppend("\t\t\tweight = min(dist * dist, 1.0);\n");
-    builder->fsCodeAppend("\t\t} else {\n");
-    builder->fsCodeAppend("\t\t\tvec2 delta_squared = delta * delta;\n");
-    builder->fsCodeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared.y), 1.0);\n");
-    builder->fsCodeAppend("\t\t}\n");
+    fsBuilder->codeAppend("\t\tfloat weight = 0.0;\n");
+    fsBuilder->codeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n");
+    fsBuilder->codeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n");
+    fsBuilder->codeAppend("\t\t\tfloat dist = length(delta);\n");
+    fsBuilder->codeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n");
+    fsBuilder->codeAppend("\t\t\tweight = min(dist * dist, 1.0);\n");
+    fsBuilder->codeAppend("\t\t} else {\n");
+    fsBuilder->codeAppend("\t\t\tvec2 delta_squared = delta * delta;\n");
+    fsBuilder->codeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared.y), 1.0);\n");
+    fsBuilder->codeAppend("\t\t}\n");
 
-    builder->fsCodeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\n");
-    builder->fsCodeAppend("\t\tvec4 output_color = ");
-    builder->fsAppendTextureLookup(samplers[0], "mix_coord");
-    builder->fsCodeAppend(";\n");
+    fsBuilder->codeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\n");
+    fsBuilder->codeAppend("\t\tvec4 output_color = ");
+    fsBuilder->appendTextureLookup(samplers[0], "mix_coord");
+    fsBuilder->codeAppend(";\n");
 
-    builder->fsCodeAppendf("\t\t%s = output_color;", outputColor);
+    fsBuilder->codeAppendf("\t\t%s = output_color;", outputColor);
     SkString modulate;
     GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor);
-    builder->fsCodeAppend(modulate.c_str());
+    fsBuilder->codeAppend(modulate.c_str());
 }
 
 void GrGLMagnifierEffect::setData(const GrGLProgramDataManager& pdman,
                                   const GrDrawEffect& drawEffect) {
     const GrMagnifierEffect& zoom = drawEffect.castEffect<GrMagnifierEffect>();
     pdman.set2f(fOffsetVar, zoom.x_offset(), zoom.y_offset());
     pdman.set2f(fInvZoomVar, zoom.x_inv_zoom(), zoom.y_inv_zoom());
     pdman.set2f(fInvInsetVar, zoom.x_inv_inset(), zoom.y_inv_inset());
 }
 
@@ skipping 182 matching lines @@
 
             int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1);
             int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1);
 
             *dptr = sptr[y_val * width + x_val];
             dptr++;
         }
     }
     return true;
 }