Add ShaderBuilders to EmitArgs and remove gettings from ProgBuilder.

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 @@
         , fColor(GrColor_ILLEGAL)
 #ifdef SK_GAMMA_APPLY_TO_A8
         , fDistanceAdjust(-1.0f)
 #endif
         {}
 
     void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{
         const GrDistanceFieldA8TextGeoProc& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldA8TextGeoProc>();
         GrGLSLGPBuilder* pb = args.fPB;
-        GrGLSLFragmentBuilder* fsBuilder = pb->getFragmentShaderBuilder();
-        SkAssertResult(fsBuilder->enableFeature(
+        GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+        SkAssertResult(fragBuilder->enableFeature(
                 GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
-        GrGLSLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
+        GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
 
         // emit attributes
-        vsBuilder->emitAttributes(dfTexEffect);
+        vertBuilder->emitAttributes(dfTexEffect);
 
 #ifdef SK_GAMMA_APPLY_TO_A8
         // adjust based on gamma
         const char* distanceAdjustUniName = nullptr;
         // width, height, 1/(3*width)
         fDistanceAdjustUni = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
             kFloat_GrSLType, kDefault_GrSLPrecision,
             "DistanceAdjust", &distanceAdjustUniName);
 #endif
 
         // Setup pass through color
         if (!dfTexEffect.colorIgnored()) {
             if (dfTexEffect.hasVertexColor()) {
                 pb->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor);
             } else {
-                this->setupUniformColor(pb, args.fOutputColor, &fColorUniform);
+                this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
             }
         }
 
         // Setup position
-        this->setupPosition(pb, gpArgs, dfTexEffect.inPosition()->fName, dfTexEffect.viewMatrix(),
+        this->setupPosition(pb,
+                            vertBuilder,
+                            gpArgs,
+                            dfTexEffect.inPosition()->fName,
+                            dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb, gpArgs->fPositionVar, dfTexEffect.inPosition()->fName,
-                             args.fTransformsIn, args.fTransformsOut);
+        this->emitTransforms(pb,
+                             vertBuilder,
+                             gpArgs->fPositionVar,
+                             dfTexEffect.inPosition()->fName,
+                             args.fTransformsIn,
+                             args.fTransformsOut);
 
         // add varyings
         GrGLSLVertToFrag recipScale(kFloat_GrSLType);
         GrGLSLVertToFrag st(kVec2f_GrSLType);
         bool isSimilarity = SkToBool(dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag);
         pb->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
-        vsBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
+        vertBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // compute numbers to be hardcoded to convert texture coordinates from int to float
         SkASSERT(dfTexEffect.numTextures() == 1);
         GrTexture* atlas = dfTexEffect.textureAccess(0).getTexture();
         SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height()));
         SkScalar recipWidth = 1.0f / atlas->width();
         SkScalar recipHeight = 1.0f / atlas->height();
 
         GrGLSLVertToFrag uv(kVec2f_GrSLType);
         pb->addVarying("TextureCoords", &uv, kHigh_GrSLPrecision);
-        vsBuilder->codeAppendf("%s = vec2(%.*f, %.*f) * %s;", uv.vsOut(),
-                               GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipWidth,
-                               GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
-                               dfTexEffect.inTextureCoords()->fName);
+        vertBuilder->codeAppendf("%s = vec2(%.*f, %.*f) * %s;", uv.vsOut(),
+                                 GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipWidth,
+                                 GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
+                                 dfTexEffect.inTextureCoords()->fName);
         
         // Use highp to work around aliasing issues
-        fsBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
-                                                               kHigh_GrSLPrecision));
-        fsBuilder->codeAppendf("vec2 uv = %s;\n", uv.fsIn());
+        fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
+                                                                 kHigh_GrSLPrecision));
+        fragBuilder->codeAppendf("vec2 uv = %s;\n", uv.fsIn());
 
-        fsBuilder->codeAppend("\tfloat texColor = ");
-        fsBuilder->appendTextureLookup(args.fSamplers[0],
-                                       "uv",
-                                       kVec2f_GrSLType);
-        fsBuilder->codeAppend(".r;\n");
-        fsBuilder->codeAppend("\tfloat distance = "
+        fragBuilder->codeAppend("\tfloat texColor = ");
+        fragBuilder->appendTextureLookup(args.fSamplers[0],
+                                         "uv",
+                                         kVec2f_GrSLType);
+        fragBuilder->codeAppend(".r;\n");
+        fragBuilder->codeAppend("\tfloat distance = "
                        SK_DistanceFieldMultiplier "*(texColor - " SK_DistanceFieldThreshold ");");
 #ifdef SK_GAMMA_APPLY_TO_A8
         // adjust width based on gamma
-        fsBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName);
+        fragBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName);
 #endif
 
-        fsBuilder->codeAppend("float afwidth;");
+        fragBuilder->codeAppend("float afwidth;");
         if (isSimilarity) {
             // For uniform scale, we adjust for the effect of the transformation on the distance
             // by using the length of the gradient of the texture coordinates. We use st coordinates
             // to ensure we're mapping 1:1 from texel space to pixel space.
 
             // this gives us a smooth step across approximately one fragment
             // we use y to work around a Mali400 bug in the x direction
-            fsBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(%s.y));",
-                                       st.fsIn());
+            fragBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(%s.y));",
+                                     st.fsIn());
         } else {
             // For general transforms, to determine the amount of correction we multiply a unit
             // vector pointing along the SDF gradient direction by the Jacobian of the st coords
             // (which is the inverse transform for this fragment) and take the length of the result.
-            fsBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance), dFdy(distance));");
+            fragBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance), dFdy(distance));");
             // the length of the gradient may be 0, so we need to check for this
             // this also compensates for the Adreno, which likes to drop tiles on division by 0
-            fsBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
-            fsBuilder->codeAppend("if (dg_len2 < 0.0001) {");
-            fsBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
-            fsBuilder->codeAppend("} else {");
-            fsBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
-            fsBuilder->codeAppend("}");
+            fragBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
+            fragBuilder->codeAppend("if (dg_len2 < 0.0001) {");
+            fragBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
+            fragBuilder->codeAppend("} else {");
+            fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
+            fragBuilder->codeAppend("}");
 
-            fsBuilder->codeAppendf("vec2 Jdx = dFdx(%s);", st.fsIn());
-            fsBuilder->codeAppendf("vec2 Jdy = dFdy(%s);", st.fsIn());
-            fsBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
-            fsBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
+            fragBuilder->codeAppendf("vec2 Jdx = dFdx(%s);", st.fsIn());
+            fragBuilder->codeAppendf("vec2 Jdy = dFdy(%s);", st.fsIn());
+            fragBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
+            fragBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
 
             // this gives us a smooth step across approximately one fragment
-            fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
+            fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
         }
-        fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distance);");
+        fragBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distance);");
 
-        fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage);
+        fragBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage);
     }
 
     void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& proc) override {
 #ifdef SK_GAMMA_APPLY_TO_A8
         const GrDistanceFieldA8TextGeoProc& dfTexEffect = proc.cast<GrDistanceFieldA8TextGeoProc>();
         float distanceAdjust = dfTexEffect.getDistanceAdjust();
         if (distanceAdjust != fDistanceAdjust) {
             pdman.set1f(fDistanceAdjustUni, distanceAdjust);
             fDistanceAdjust = distanceAdjust;
         }
@@ skipping 123 matching lines @@
 public:
     GrGLDistanceFieldPathGeoProc()
         : fViewMatrix(SkMatrix::InvalidMatrix())
         , fColor(GrColor_ILLEGAL)
         , fTextureSize(SkISize::Make(-1, -1)) {}
 
     void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{
         const GrDistanceFieldPathGeoProc& dfTexEffect = args.fGP.cast<GrDistanceFieldPathGeoProc>();
 
         GrGLSLGPBuilder* pb = args.fPB;
-        GrGLSLFragmentBuilder* fsBuilder = pb->getFragmentShaderBuilder();
-        SkAssertResult(fsBuilder->enableFeature(
+        GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+        SkAssertResult(fragBuilder->enableFeature(
                                      GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
-        GrGLSLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
+        GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
 
         // emit attributes
-        vsBuilder->emitAttributes(dfTexEffect);
+        vertBuilder->emitAttributes(dfTexEffect);
 
         GrGLSLVertToFrag v(kVec2f_GrSLType);
         pb->addVarying("TextureCoords", &v, kHigh_GrSLPrecision);
 
         // setup pass through color
         if (!dfTexEffect.colorIgnored()) {
             if (dfTexEffect.hasVertexColor()) {
                 pb->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor);
             } else {
-                this->setupUniformColor(pb, args.fOutputColor, &fColorUniform);
+                this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
             }
         }
-        vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
+        vertBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // Setup position
-        this->setupPosition(pb, gpArgs, dfTexEffect.inPosition()->fName, dfTexEffect.viewMatrix(),
+        this->setupPosition(pb,
+                            vertBuilder,
+                            gpArgs,
+                            dfTexEffect.inPosition()->fName,
+                            dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb, gpArgs->fPositionVar, dfTexEffect.inPosition()->fName,
-                             args.fTransformsIn, args.fTransformsOut);
+        this->emitTransforms(pb,
+                             vertBuilder,
+                             gpArgs->fPositionVar,
+                             dfTexEffect.inPosition()->fName,
+                             args.fTransformsIn,
+                             args.fTransformsOut);
 
         const char* textureSizeUniName = nullptr;
         fTextureSizeUni = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
                                          kVec2f_GrSLType, kDefault_GrSLPrecision,
                                          "TextureSize", &textureSizeUniName);
 
         // Use highp to work around aliasing issues
-        fsBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
-                                                               kHigh_GrSLPrecision));
-        fsBuilder->codeAppendf("vec2 uv = %s;", v.fsIn());
+        fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
+                                                                 kHigh_GrSLPrecision));
+        fragBuilder->codeAppendf("vec2 uv = %s;", v.fsIn());
 
-        fsBuilder->codeAppend("float texColor = ");
-        fsBuilder->appendTextureLookup(args.fSamplers[0],
-                                       "uv",
-                                       kVec2f_GrSLType);
-        fsBuilder->codeAppend(".r;");
-        fsBuilder->codeAppend("float distance = "
+        fragBuilder->codeAppend("float texColor = ");
+        fragBuilder->appendTextureLookup(args.fSamplers[0],
+                                         "uv",
+                                         kVec2f_GrSLType);
+        fragBuilder->codeAppend(".r;");
+        fragBuilder->codeAppend("float distance = "
             SK_DistanceFieldMultiplier "*(texColor - " SK_DistanceFieldThreshold ");");
 
-        fsBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
-                                                               kHigh_GrSLPrecision));
-        fsBuilder->codeAppendf("vec2 st = uv*%s;", textureSizeUniName);
-        fsBuilder->codeAppend("float afwidth;");
+        fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
+                                                                 kHigh_GrSLPrecision));
+        fragBuilder->codeAppendf("vec2 st = uv*%s;", textureSizeUniName);
+        fragBuilder->codeAppend("float afwidth;");
         if (dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag) {
             // For uniform scale, we adjust for the effect of the transformation on the distance
             // by using the length of the gradient of the texture coordinates. We use st coordinates
             // to ensure we're mapping 1:1 from texel space to pixel space.
 
             // this gives us a smooth step across approximately one fragment
-            fsBuilder->codeAppend("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(st.y));");
+            fragBuilder->codeAppend("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(st.y));");
         } else {
             // For general transforms, to determine the amount of correction we multiply a unit
             // vector pointing along the SDF gradient direction by the Jacobian of the st coords
             // (which is the inverse transform for this fragment) and take the length of the result.
-            fsBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance), dFdy(distance));");
+            fragBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance), dFdy(distance));");
             // the length of the gradient may be 0, so we need to check for this
             // this also compensates for the Adreno, which likes to drop tiles on division by 0
-            fsBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
-            fsBuilder->codeAppend("if (dg_len2 < 0.0001) {");
-            fsBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
-            fsBuilder->codeAppend("} else {");
-            fsBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
-            fsBuilder->codeAppend("}");
+            fragBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
+            fragBuilder->codeAppend("if (dg_len2 < 0.0001) {");
+            fragBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
+            fragBuilder->codeAppend("} else {");
+            fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
+            fragBuilder->codeAppend("}");
 
-            fsBuilder->codeAppend("vec2 Jdx = dFdx(st);");
-            fsBuilder->codeAppend("vec2 Jdy = dFdy(st);");
-            fsBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
-            fsBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
+            fragBuilder->codeAppend("vec2 Jdx = dFdx(st);");
+            fragBuilder->codeAppend("vec2 Jdy = dFdy(st);");
+            fragBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
+            fragBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
 
             // this gives us a smooth step across approximately one fragment
-            fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
+            fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
         }
-        fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distance);");
+        fragBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distance);");
 
-        fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage);
+        fragBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage);
     }
 
     void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& proc) override {
         SkASSERT(fTextureSizeUni.isValid());
 
         GrTexture* texture = proc.texture(0);
         if (texture->width() != fTextureSize.width() || 
             texture->height() != fTextureSize.height()) {
             fTextureSize = SkISize::Make(texture->width(), texture->height());
             pdman.set2f(fTextureSizeUni,
@@ skipping 112 matching lines @@
     GrGLDistanceFieldLCDTextGeoProc()
         : fViewMatrix(SkMatrix::InvalidMatrix()), fColor(GrColor_ILLEGAL) {
         fDistanceAdjust = GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make(1.0f, 1.0f, 1.0f);
     }
 
     void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{
         const GrDistanceFieldLCDTextGeoProc& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldLCDTextGeoProc>();
         GrGLSLGPBuilder* pb = args.fPB;
 
-        GrGLSLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
+        GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
 
         // emit attributes
-        vsBuilder->emitAttributes(dfTexEffect);
+        vertBuilder->emitAttributes(dfTexEffect);
+
+        GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
 
         // setup pass through color
         if (!dfTexEffect.colorIgnored()) {
-            this->setupUniformColor(pb, args.fOutputColor, &fColorUniform);
+            this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
         }
 
         // Setup position
-        this->setupPosition(pb, gpArgs, dfTexEffect.inPosition()->fName, dfTexEffect.viewMatrix(),
+        this->setupPosition(pb,
+                            vertBuilder,
+                            gpArgs,
+                            dfTexEffect.inPosition()->fName,
+                            dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb, gpArgs->fPositionVar, dfTexEffect.inPosition()->fName,
-                             args.fTransformsIn, args.fTransformsOut);
+        this->emitTransforms(pb,
+                             vertBuilder,
+                             gpArgs->fPositionVar,
+                             dfTexEffect.inPosition()->fName,
+                             args.fTransformsIn,
+                             args.fTransformsOut);
 
         // set up varyings
         bool isUniformScale = SkToBool(dfTexEffect.getFlags() & kUniformScale_DistanceFieldEffectMask);
         GrGLSLVertToFrag recipScale(kFloat_GrSLType);
         GrGLSLVertToFrag st(kVec2f_GrSLType);
         pb->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
-        vsBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
+        vertBuilder->codeAppendf("%s = %s;", st.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // compute numbers to be hardcoded to convert texture coordinates from int to float
         SkASSERT(dfTexEffect.numTextures() == 1);
         GrTexture* atlas = dfTexEffect.textureAccess(0).getTexture();
         SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height()));
         SkScalar recipWidth = 1.0f / atlas->width();
         SkScalar recipHeight = 1.0f / atlas->height();
 
         GrGLSLVertToFrag uv(kVec2f_GrSLType);
         pb->addVarying("TextureCoords", &uv, kHigh_GrSLPrecision);
-        vsBuilder->codeAppendf("%s = vec2(%.*f, %.*f) * %s;", uv.vsOut(),
-                               GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipWidth,
-                               GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
-                               dfTexEffect.inTextureCoords()->fName);
+        vertBuilder->codeAppendf("%s = vec2(%.*f, %.*f) * %s;", uv.vsOut(),
+                                 GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipWidth,
+                                 GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
+                                 dfTexEffect.inTextureCoords()->fName);
 
         // add frag shader code
-        GrGLSLFragmentBuilder* fsBuilder = pb->getFragmentShaderBuilder();
 
-        SkAssertResult(fsBuilder->enableFeature(
+        SkAssertResult(fragBuilder->enableFeature(
                 GrGLSLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         // create LCD offset adjusted by inverse of transform
         // Use highp to work around aliasing issues
-        fsBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
-                                                               kHigh_GrSLPrecision));
-        fsBuilder->codeAppendf("vec2 uv = %s;\n", uv.fsIn());
-        fsBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
-                                                               kHigh_GrSLPrecision));
+        fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
+                                                                 kHigh_GrSLPrecision));
+        fragBuilder->codeAppendf("vec2 uv = %s;\n", uv.fsIn());
+        fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(pb->glslCaps(),
+                                                                 kHigh_GrSLPrecision));
 
         SkScalar lcdDelta = 1.0f / (3.0f * atlas->width());
         if (dfTexEffect.getFlags() & kBGR_DistanceFieldEffectFlag) {
-            fsBuilder->codeAppendf("float delta = -%.*f;\n", SK_FLT_DECIMAL_DIG, lcdDelta);
+            fragBuilder->codeAppendf("float delta = -%.*f;\n", SK_FLT_DECIMAL_DIG, lcdDelta);
         } else {
-            fsBuilder->codeAppendf("float delta = %.*f;\n", SK_FLT_DECIMAL_DIG, lcdDelta);
+            fragBuilder->codeAppendf("float delta = %.*f;\n", SK_FLT_DECIMAL_DIG, lcdDelta);
         }
         if (isUniformScale) {
-            fsBuilder->codeAppendf("float dy = abs(dFdy(%s.y));", st.fsIn());
-            fsBuilder->codeAppend("vec2 offset = vec2(dy*delta, 0.0);");
+            fragBuilder->codeAppendf("float dy = abs(dFdy(%s.y));", st.fsIn());
+            fragBuilder->codeAppend("vec2 offset = vec2(dy*delta, 0.0);");
         } else {
-            fsBuilder->codeAppendf("vec2 st = %s;\n", st.fsIn());
+            fragBuilder->codeAppendf("vec2 st = %s;\n", st.fsIn());
 
-            fsBuilder->codeAppend("vec2 Jdx = dFdx(st);");
-            fsBuilder->codeAppend("vec2 Jdy = dFdy(st);");
-            fsBuilder->codeAppend("vec2 offset = delta*Jdx;");
+            fragBuilder->codeAppend("vec2 Jdx = dFdx(st);");
+            fragBuilder->codeAppend("vec2 Jdy = dFdy(st);");
+            fragBuilder->codeAppend("vec2 offset = delta*Jdx;");
         }
 
         // green is distance to uv center
-        fsBuilder->codeAppend("\tvec4 texColor = ");
-        fsBuilder->appendTextureLookup(args.fSamplers[0], "uv", kVec2f_GrSLType);
-        fsBuilder->codeAppend(";\n");
-        fsBuilder->codeAppend("\tvec3 distance;\n");
-        fsBuilder->codeAppend("\tdistance.y = texColor.r;\n");
+        fragBuilder->codeAppend("\tvec4 texColor = ");
+        fragBuilder->appendTextureLookup(args.fSamplers[0], "uv", kVec2f_GrSLType);
+        fragBuilder->codeAppend(";\n");
+        fragBuilder->codeAppend("\tvec3 distance;\n");
+        fragBuilder->codeAppend("\tdistance.y = texColor.r;\n");
         // red is distance to left offset
-        fsBuilder->codeAppend("\tvec2 uv_adjusted = uv - offset;\n");
-        fsBuilder->codeAppend("\ttexColor = ");
-        fsBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType);
-        fsBuilder->codeAppend(";\n");
-        fsBuilder->codeAppend("\tdistance.x = texColor.r;\n");
+        fragBuilder->codeAppend("\tvec2 uv_adjusted = uv - offset;\n");
+        fragBuilder->codeAppend("\ttexColor = ");
+        fragBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType);
+        fragBuilder->codeAppend(";\n");
+        fragBuilder->codeAppend("\tdistance.x = texColor.r;\n");
         // blue is distance to right offset
-        fsBuilder->codeAppend("\tuv_adjusted = uv + offset;\n");
-        fsBuilder->codeAppend("\ttexColor = ");
-        fsBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType);
-        fsBuilder->codeAppend(";\n");
-        fsBuilder->codeAppend("\tdistance.z = texColor.r;\n");
+        fragBuilder->codeAppend("\tuv_adjusted = uv + offset;\n");
+        fragBuilder->codeAppend("\ttexColor = ");
+        fragBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType);
+        fragBuilder->codeAppend(";\n");
+        fragBuilder->codeAppend("\tdistance.z = texColor.r;\n");
 
-        fsBuilder->codeAppend("\tdistance = "
+        fragBuilder->codeAppend("\tdistance = "
            "vec3(" SK_DistanceFieldMultiplier ")*(distance - vec3(" SK_DistanceFieldThreshold"));");
 
         // adjust width based on gamma
         const char* distanceAdjustUniName = nullptr;
         fDistanceAdjustUni = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
             kVec3f_GrSLType, kDefault_GrSLPrecision,
             "DistanceAdjust", &distanceAdjustUniName);
-        fsBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName);
+        fragBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName);
 
         // To be strictly correct, we should compute the anti-aliasing factor separately
         // for each color component. However, this is only important when using perspective
         // transformations, and even then using a single factor seems like a reasonable
         // trade-off between quality and speed.
-        fsBuilder->codeAppend("float afwidth;");
+        fragBuilder->codeAppend("float afwidth;");
         if (isUniformScale) {
             // For uniform scale, we adjust for the effect of the transformation on the distance
             // by using the length of the gradient of the texture coordinates. We use st coordinates
             // to ensure we're mapping 1:1 from texel space to pixel space.
 
             // this gives us a smooth step across approximately one fragment
-            fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*dy;");
+            fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*dy;");
         } else {
             // For general transforms, to determine the amount of correction we multiply a unit
             // vector pointing along the SDF gradient direction by the Jacobian of the st coords
             // (which is the inverse transform for this fragment) and take the length of the result.
-            fsBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance.r), dFdy(distance.r));");
+            fragBuilder->codeAppend("vec2 dist_grad = vec2(dFdx(distance.r), dFdy(distance.r));");
             // the length of the gradient may be 0, so we need to check for this
             // this also compensates for the Adreno, which likes to drop tiles on division by 0
-            fsBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
-            fsBuilder->codeAppend("if (dg_len2 < 0.0001) {");
-            fsBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
-            fsBuilder->codeAppend("} else {");
-            fsBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
-            fsBuilder->codeAppend("}");
-            fsBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
-            fsBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
+            fragBuilder->codeAppend("float dg_len2 = dot(dist_grad, dist_grad);");
+            fragBuilder->codeAppend("if (dg_len2 < 0.0001) {");
+            fragBuilder->codeAppend("dist_grad = vec2(0.7071, 0.7071);");
+            fragBuilder->codeAppend("} else {");
+            fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);");
+            fragBuilder->codeAppend("}");
+            fragBuilder->codeAppend("vec2 grad = vec2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,");
+            fragBuilder->codeAppend("                 dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);");
 
             // this gives us a smooth step across approximately one fragment
-            fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
+            fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);");
         }
 
-        fsBuilder->codeAppend(
+        fragBuilder->codeAppend(
                       "vec4 val = vec4(smoothstep(vec3(-afwidth), vec3(afwidth), distance), 1.0);");
         // set alpha to be max of rgb coverage
-        fsBuilder->codeAppend("val.a = max(max(val.r, val.g), val.b);");
+        fragBuilder->codeAppend("val.a = max(max(val.r, val.g), val.b);");
 
-        fsBuilder->codeAppendf("%s = val;", args.fOutputCoverage);
+        fragBuilder->codeAppendf("%s = val;", args.fOutputCoverage);
     }
 
     void setData(const GrGLSLProgramDataManager& pdman,
                  const GrPrimitiveProcessor& processor) override {
         SkASSERT(fDistanceAdjustUni.isValid());
 
         const GrDistanceFieldLCDTextGeoProc& dflcd = processor.cast<GrDistanceFieldLCDTextGeoProc>();
         GrDistanceFieldLCDTextGeoProc::DistanceAdjust wa = dflcd.getDistanceAdjust();
         if (wa != fDistanceAdjust) {
             pdman.set3f(fDistanceAdjustUni,
@@ skipping 100 matching lines @@
     uint32_t flags = kUseLCD_DistanceFieldEffectFlag;
     flags |= d->fRandom->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0;
     flags |= d->fRandom->nextBool() ? kBGR_DistanceFieldEffectFlag : 0;
     return GrDistanceFieldLCDTextGeoProc::Create(GrRandomColor(d->fRandom),
                                                  GrTest::TestMatrix(d->fRandom),
                                                  d->fTextures[texIdx], params,
                                                  wa,
                                                  flags,
                                                  d->fRandom->nextBool());
 }