Create GLSLUniformHandler class for gpu backend

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"
 
 #include "SkDistanceFieldGen.h"
 
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
 #include "glsl/GrGLSLGeometryProcessor.h"
-#include "glsl/GrGLSLProgramBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
 #include "glsl/GrGLSLUtil.h"
 #include "glsl/GrGLSLVarying.h"
 #include "glsl/GrGLSLVertexShaderBuilder.h"
 
 // Assuming a radius of a little less than the diagonal of the fragment
 #define SK_DistanceFieldAAFactor     "0.65"
 
 class GrGLDistanceFieldA8TextGeoProc : public GrGLSLGeometryProcessor {
 public:
     GrGLDistanceFieldA8TextGeoProc()
         : fViewMatrix(SkMatrix::InvalidMatrix())
         , 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* 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
         const char* distanceAdjustUniName = nullptr;
         // width, height, 1/(3*width)
-        fDistanceAdjustUni = pb->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-            kFloat_GrSLType, kDefault_GrSLPrecision,
-            "DistanceAdjust", &distanceAdjustUniName);
+        fDistanceAdjustUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                        kFloat_GrSLType, kDefault_GrSLPrecision,
+                                                        "DistanceAdjust", &distanceAdjustUniName);
 #endif
 
         // Setup pass through color
         if (!dfTexEffect.colorIgnored()) {
             if (dfTexEffect.hasVertexColor()) {
                 varyingHandler->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor);
             } else {
-                this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
+                this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor,
+                                        &fColorUniform);
             }
         }
 
         // Setup position
-        this->setupPosition(pb,
-                            vertBuilder,
+        this->setupPosition(vertBuilder,
+                            uniformHandler,
                             gpArgs,
                             dfTexEffect.inPosition()->fName,
                             dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb,
-                             vertBuilder,
+        this->emitTransforms(vertBuilder,
                              varyingHandler,
+                             uniformHandler,
                              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);
         varyingHandler->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
@@ skipping 200 matching lines @@
 class GrGLDistanceFieldPathGeoProc : public GrGLSLGeometryProcessor {
 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* 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);
 
         // setup pass through color
         if (!dfTexEffect.colorIgnored()) {
             if (dfTexEffect.hasVertexColor()) {
                 varyingHandler->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor);
             } else {
-                this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
+                this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor,
+                                        &fColorUniform);
             }
         }
         vertBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // Setup position
-        this->setupPosition(pb,
-                            vertBuilder,
+        this->setupPosition(vertBuilder,
+                            uniformHandler,
                             gpArgs,
                             dfTexEffect.inPosition()->fName,
                             dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb,
-                             vertBuilder,
+        this->emitTransforms(vertBuilder,
                              varyingHandler,
+                             uniformHandler,
                              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);
+        fTextureSizeUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                     kVec2f_GrSLType, kDefault_GrSLPrecision,
+                                                     "TextureSize", &textureSizeUniName);
 
         // Use highp to work around aliasing issues
         fragBuilder->codeAppend(GrGLSLShaderVar::PrecisionString(args.fGLSLCaps,
                                                                  kHigh_GrSLPrecision));
         fragBuilder->codeAppendf("vec2 uv = %s;", v.fsIn());
 
         fragBuilder->codeAppend("float texColor = ");
         fragBuilder->appendTextureLookup(args.fSamplers[0],
                                          "uv",
                                          kVec2f_GrSLType);
@@ skipping 160 matching lines @@
 class GrGLDistanceFieldLCDTextGeoProc : public GrGLSLGeometryProcessor {
 public:
     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* vertBuilder = args.fVertBuilder;
         GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
+        GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
 
         // emit attributes
         varyingHandler->emitAttributes(dfTexEffect);
 
         GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
 
         // setup pass through color
         if (!dfTexEffect.colorIgnored()) {
-            this->setupUniformColor(pb, fragBuilder, args.fOutputColor, &fColorUniform);
+            this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, &fColorUniform);
         }
 
         // Setup position
-        this->setupPosition(pb,
-                            vertBuilder,
+        this->setupPosition(vertBuilder,
+                            uniformHandler,
                             gpArgs,
                             dfTexEffect.inPosition()->fName,
                             dfTexEffect.viewMatrix(),
                             &fViewMatrixUniform);
 
         // emit transforms
-        this->emitTransforms(pb,
-                             vertBuilder,
+        this->emitTransforms(vertBuilder,
                              varyingHandler,
+                             uniformHandler,
                              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);
         varyingHandler->addVarying("IntTextureCoords", &st, kHigh_GrSLPrecision);
@@ skipping 60 matching lines @@
         fragBuilder->codeAppend("\ttexColor = ");
         fragBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType);
         fragBuilder->codeAppend(";\n");
         fragBuilder->codeAppend("\tdistance.z = texColor.r;\n");
 
         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);
+        fDistanceAdjustUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                        kVec3f_GrSLType, kDefault_GrSLPrecision,
+                                                        "DistanceAdjust", &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.
         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
@@ skipping 140 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());
 }