Add ShaderBuilders to EmitArgs and remove gettings from ProgBuilder.

src/effects/SkDisplacementMapEffect.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 "SkDisplacementMapEffect.h"
 #include "SkDevice.h"
 #include "SkReadBuffer.h"
@@ skipping 539 matching lines @@
 
     fScaleUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
                                           kVec2f_GrSLType, kDefault_GrSLPrecision, "Scale");
     const char* scaleUni = args.fBuilder->getUniformCStr(fScaleUni);
     const char* dColor = "dColor";
     const char* cCoords = "cCoords";
     const char* nearZero = "1e-6"; // Since 6.10352e−5 is the smallest half float, use
                                    // a number smaller than that to approximate 0, but
                                    // leave room for 32-bit float GPU rounding errors.
 
-    GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
-    fsBuilder->codeAppendf("\t\tvec4 %s = ", dColor);
-    fsBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(),
+    GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+    fragBuilder->codeAppendf("\t\tvec4 %s = ", dColor);
+    fragBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(),
                                    args.fCoords[0].getType());
-    fsBuilder->codeAppend(";\n");
+    fragBuilder->codeAppend(";\n");
 
     // Unpremultiply the displacement
-    fsBuilder->codeAppendf("\t\t%s.rgb = (%s.a < %s) ? vec3(0.0) : clamp(%s.rgb / %s.a, 0.0, 1.0);",
-                           dColor, dColor, nearZero, dColor, dColor);
-    SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 1);
-    fsBuilder->codeAppendf("\t\tvec2 %s = %s + %s*(%s.",
-                           cCoords, coords2D.c_str(), scaleUni, dColor);
+    fragBuilder->codeAppendf(
+        "\t\t%s.rgb = (%s.a < %s) ? vec3(0.0) : clamp(%s.rgb / %s.a, 0.0, 1.0);",
+        dColor, dColor, nearZero, dColor, dColor);
+    SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 1);
+    fragBuilder->codeAppendf("\t\tvec2 %s = %s + %s*(%s.",
+                             cCoords, coords2D.c_str(), scaleUni, dColor);
 
     switch (fXChannelSelector) {
       case SkDisplacementMapEffect::kR_ChannelSelectorType:
-        fsBuilder->codeAppend("r");
+        fragBuilder->codeAppend("r");
         break;
       case SkDisplacementMapEffect::kG_ChannelSelectorType:
-        fsBuilder->codeAppend("g");
+        fragBuilder->codeAppend("g");
         break;
       case SkDisplacementMapEffect::kB_ChannelSelectorType:
-        fsBuilder->codeAppend("b");
+        fragBuilder->codeAppend("b");
         break;
       case SkDisplacementMapEffect::kA_ChannelSelectorType:
-        fsBuilder->codeAppend("a");
+        fragBuilder->codeAppend("a");
         break;
       case SkDisplacementMapEffect::kUnknown_ChannelSelectorType:
       default:
         SkDEBUGFAIL("Unknown X channel selector");
     }
 
     switch (fYChannelSelector) {
       case SkDisplacementMapEffect::kR_ChannelSelectorType:
-        fsBuilder->codeAppend("r");
+        fragBuilder->codeAppend("r");
         break;
       case SkDisplacementMapEffect::kG_ChannelSelectorType:
-        fsBuilder->codeAppend("g");
+        fragBuilder->codeAppend("g");
         break;
       case SkDisplacementMapEffect::kB_ChannelSelectorType:
-        fsBuilder->codeAppend("b");
+        fragBuilder->codeAppend("b");
         break;
       case SkDisplacementMapEffect::kA_ChannelSelectorType:
-        fsBuilder->codeAppend("a");
+        fragBuilder->codeAppend("a");
         break;
       case SkDisplacementMapEffect::kUnknown_ChannelSelectorType:
       default:
         SkDEBUGFAIL("Unknown Y channel selector");
     }
-    fsBuilder->codeAppend("-vec2(0.5));\t\t");
+    fragBuilder->codeAppend("-vec2(0.5));\t\t");
 
-    fGLDomain.sampleTexture(fsBuilder, domain, args.fOutputColor, SkString(cCoords),
+    fGLDomain.sampleTexture(fragBuilder, domain, args.fOutputColor, SkString(cCoords),
                             args.fSamplers[1]);
-    fsBuilder->codeAppend(";\n");
+    fragBuilder->codeAppend(";\n");
 }
 
 void GrGLDisplacementMapEffect::onSetData(const GrGLSLProgramDataManager& pdman,
                                           const GrProcessor& proc) {
     const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMapEffect>();
     GrTexture* colorTex = displacementMap.texture(1);
     SkScalar scaleX = displacementMap.scale().fX / colorTex->width();
     SkScalar scaleY = displacementMap.scale().fY / colorTex->height();
     pdman.set2f(fScaleUni, SkScalarToFloat(scaleX),
                 colorTex->origin() == kTopLeft_GrSurfaceOrigin ?
                 SkScalarToFloat(scaleY) : SkScalarToFloat(-scaleY));
     fGLDomain.setData(pdman, displacementMap.domain(), colorTex->origin());
 }
 
 void GrGLDisplacementMapEffect::GenKey(const GrProcessor& proc,
                                        const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     const GrDisplacementMapEffect& displacementMap = proc.cast<GrDisplacementMapEffect>();
 
     uint32_t xKey = displacementMap.xChannelSelector();
     uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBits;
 
     b->add32(xKey | yKey);
 }
 #endif