re-re-land of skslc now automatically turns on derivatives support

src/gpu/effects/GrDistanceFieldGeoProc.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 "GrDistanceFieldGeoProc.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
@@ skipping 17 matching lines @@
         : fViewMatrix(SkMatrix::InvalidMatrix())
 #ifdef SK_GAMMA_APPLY_TO_A8
         , fDistanceAdjust(-1.0f)
 #endif
         {}
 
     void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{
         const GrDistanceFieldA8TextGeoProc& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldA8TextGeoProc>();
         GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
-        SkAssertResult(fragBuilder->enableFeature(
-                GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
         GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
         GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
 
         // emit attributes
         varyingHandler->emitAttributes(dfTexEffect);
 
 #ifdef SK_GAMMA_APPLY_TO_A8
         // adjust based on gamma
@@ skipping 256 matching lines @@
 class GrGLDistanceFieldPathGeoProc : public GrGLSLGeometryProcessor {
 public:
     GrGLDistanceFieldPathGeoProc()
         : fViewMatrix(SkMatrix::InvalidMatrix())
         , fTextureSize(SkISize::Make(-1, -1)) {}
 
     void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{
         const GrDistanceFieldPathGeoProc& dfTexEffect = args.fGP.cast<GrDistanceFieldPathGeoProc>();
 
         GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
-        SkAssertResult(fragBuilder->enableFeature(
-                                     GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
         GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
         GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
 
         // emit attributes
         varyingHandler->emitAttributes(dfTexEffect);
 
         GrGLSLVertToFrag v(kVec2f_GrSLType);
         varyingHandler->addVarying("TextureCoords", &v, kHigh_GrSLPrecision);
@@ skipping 275 matching lines @@
         SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height()));
 
         GrGLSLVertToFrag st(kVec2f_GrSLType);
         varyingHandler->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
         vertBuilder->codeAppendf("%s = vec2(%d, %d) * %s;", st.vsOut(),
                                  atlas->width(), atlas->height(),
                                  dfTexEffect.inTextureCoords()->fName);
 
         // add frag shader code
 
-        SkAssertResult(fragBuilder->enableFeature(
-                GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
-
         // create LCD offset adjusted by inverse of transform
         // Use highp to work around aliasing issues
         fragBuilder->appendPrecisionModifier(kHigh_GrSLPrecision);
         fragBuilder->codeAppendf("vec2 uv = %s;\n", uv.fsIn());
         fragBuilder->appendPrecisionModifier(kHigh_GrSLPrecision);
 
         SkScalar lcdDelta = 1.0f / (3.0f * atlas->width());
         if (dfTexEffect.getFlags() & kBGR_DistanceFieldEffectFlag) {
             fragBuilder->codeAppendf("float delta = -%.*f;\n", SK_FLT_DECIMAL_DIG, lcdDelta);
         } else {
@@ skipping 215 matching lines @@
         flags |= d->fRandom->nextBool() ? kScaleOnly_DistanceFieldEffectFlag : 0;
     }
     flags |= d->fRandom->nextBool() ? kBGR_DistanceFieldEffectFlag : 0;
     return GrDistanceFieldLCDTextGeoProc::Make(GrRandomColor(d->fRandom),
                                                GrTest::TestMatrix(d->fRandom),
                                                d->fTextures[texIdx], params,
                                                wa,
                                                flags,
                                                d->fRandom->nextBool());
 }