Add more specialized fragment builders

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"
@@ skipping 111 matching lines @@
     fInvZoomVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                              kVec2f_GrSLType, kDefault_GrSLPrecision,
                                              "InvZoom");
     fInvInsetVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                               kVec2f_GrSLType, kDefault_GrSLPrecision,
                                               "InvInset");
     fBoundsVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
                                             kVec4f_GrSLType, kDefault_GrSLPrecision,
                                             "Bounds");
 
-    GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+    GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
     SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0);
     fragBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
     fragBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n",
                              uniformHandler->getUniformCStr(fOffsetVar),
                              coords2D.c_str(),
                              uniformHandler->getUniformCStr(fInvZoomVar));
     const char* bounds = uniformHandler->getUniformCStr(fBoundsVar);
     fragBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", bounds, bounds);
     fragBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n");
     fragBuilder->codeAppendf("\t\tdelta = delta * %s;\n",
@@ skipping 222 matching lines @@
 
 #ifndef SK_IGNORE_TO_STRING
 void SkMagnifierImageFilter::toString(SkString* str) const {
     str->appendf("SkMagnifierImageFilter: (");
     str->appendf("src: (%f,%f,%f,%f) ",
                  fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBottom);
     str->appendf("inset: %f", fInset);
     str->append(")");
 }
 #endif