Move most of the transform logic into the primitive processors

src/gpu/effects/GrDistanceFieldTextureEffect.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 "GrDistanceFieldTextureEffect.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
@@ skipping 17 matching lines @@
 public:
     GrGLDistanceFieldTextureEffect(const GrGeometryProcessor&,
                                    const GrBatchTracker&)
         : fColor(GrColor_ILLEGAL)
         , fTextureSize(SkISize::Make(-1,-1))
 #ifdef SK_GAMMA_APPLY_TO_A8
         , fLuminance(-1.0f)
 #endif
         {}
 
-    virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+    virtual void emitCode(EmitArgs& args) SK_OVERRIDE {
         const GrDistanceFieldTextureEffect& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldTextureEffect>();
         const DistanceFieldBatchTracker& local = args.fBT.cast<DistanceFieldBatchTracker>();
         GrGLGPBuilder* pb = args.fPB;
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
         SkAssertResult(fsBuilder->enableFeature(
                 GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
+
+        // emit attributes
+        vsBuilder->emitAttributes(dfTexEffect);
+
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // Setup pass through color
         this->setupColorPassThrough(pb, local.fInputColorType, args.fOutputColor,
                                     dfTexEffect.inColor(), &fColorUniform);
 
         // setup uniform viewMatrix
         this->addUniformViewMatrix(pb);
 
-        // setup position varying
-        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
-                               this->uViewM(), dfTexEffect.inPosition()->fName);
+        // Setup position
+        const char* pos3 = "pos3";
+        vsBuilder->codeAppendf("vec3 %s;", pos3);
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", pos3, this->uViewM(),
+                               dfTexEffect.inPosition()->fName);
 
-        // setup output coords
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(),
-                               dfTexEffect.inPosition()->fName);
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(),
-                               dfTexEffect.inPosition()->fName);
+        // emit transforms
+        this->emitTransforms(args.fPB, pos3, dfTexEffect.inPosition()->fName,
+                             dfTexEffect.localMatrix(), args.fTransformsIn, args.fTransformsOut);
+
+        vsBuilder->transformToNormalizedDeviceSpace(pos3);
 
         const char* textureSizeUniName = NULL;
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                kVec2f_GrSLType, kDefault_GrSLPrecision,
                                                "TextureSize", &textureSizeUniName);
 
         fsBuilder->codeAppend("\tvec4 texColor = ");
         fsBuilder->appendTextureLookup(args.fSamplers[0],
                                        v.fsIn(),
                                        kVec2f_GrSLType);
@@ skipping 157 matching lines @@
 void GrDistanceFieldTextureEffect::onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const {
     out->setUnknownSingleComponent();
 }
 
 void GrDistanceFieldTextureEffect::getGLProcessorKey(const GrBatchTracker& bt,
                                                      const GrGLCaps& caps,
                                                      GrProcessorKeyBuilder* b) const {
     GrGLDistanceFieldTextureEffect::GenKey(*this, bt, caps, b);
 }
 
-GrGLGeometryProcessor*
-GrDistanceFieldTextureEffect::createGLInstance(const GrBatchTracker& bt) const {
+GrGLPrimitiveProcessor*
+GrDistanceFieldTextureEffect::createGLInstance(const GrBatchTracker& bt,
+                                               const GrGLCaps&) const {
     return SkNEW_ARGS(GrGLDistanceFieldTextureEffect, (*this, bt));
 }
 
 void GrDistanceFieldTextureEffect::initBatchTracker(GrBatchTracker* bt, const InitBT& init) const {
     DistanceFieldBatchTracker* local = bt->cast<DistanceFieldBatchTracker>();
     local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init,
                                                SkToBool(fInColor));
     local->fUsesLocalCoords = init.fUsesLocalCoords;
 }
 
@@ skipping 57 matching lines @@
     GrColor fColor;
     bool fUsesLocalCoords;
 };
 
 class GrGLDistanceFieldNoGammaTextureEffect : public GrGLGeometryProcessor {
 public:
     GrGLDistanceFieldNoGammaTextureEffect(const GrGeometryProcessor&,
                                           const GrBatchTracker&)
         : fColor(GrColor_ILLEGAL), fTextureSize(SkISize::Make(-1, -1)) {}
 
-    virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+    virtual void emitCode(EmitArgs& args) SK_OVERRIDE {
         const GrDistanceFieldNoGammaTextureEffect& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldNoGammaTextureEffect>();
 
         const DistanceFieldNoGammaBatchTracker& local =
                 args.fBT.cast<DistanceFieldNoGammaBatchTracker>();
         GrGLGPBuilder* pb = args.fPB;
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
         SkAssertResult(fsBuilder->enableFeature(
                                      GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
+
+        // emit attributes
+        vsBuilder->emitAttributes(dfTexEffect);
+
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
 
         // setup pass through color
         this->setupColorPassThrough(pb, local.fInputColorType, args.fOutputColor,
                                     dfTexEffect.inColor(), &fColorUniform);
 
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
-        // setup coord outputs
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(),
-                               dfTexEffect.inPosition()->fName);
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(),
-                               dfTexEffect.inPosition()->fName);
-
         // setup uniform viewMatrix
         this->addUniformViewMatrix(pb);
 
-        // setup position varying
-        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(),
-                               this->uViewM(), dfTexEffect.inPosition()->fName);
+        // Setup position
+        const char* pos3 = "pos3";
+        vsBuilder->codeAppendf("vec3 %s;", pos3);
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", pos3, this->uViewM(),
+                               dfTexEffect.inPosition()->fName);
+
+        // emit transforms
+        this->emitTransforms(args.fPB, pos3, dfTexEffect.inPosition()->fName,
+                             dfTexEffect.localMatrix(), args.fTransformsIn, args.fTransformsOut);
+
+        vsBuilder->transformToNormalizedDeviceSpace(pos3);
 
         const char* textureSizeUniName = NULL;
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                               kVec2f_GrSLType, kDefault_GrSLPrecision,
                                               "TextureSize", &textureSizeUniName);
 
         fsBuilder->codeAppend("vec4 texColor = ");
         fsBuilder->appendTextureLookup(args.fSamplers[0],
                                        v.fsIn(),
                                        kVec2f_GrSLType);
@@ skipping 119 matching lines @@
 void GrDistanceFieldNoGammaTextureEffect::onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const{
     out->setUnknownSingleComponent();
 }
 
 void GrDistanceFieldNoGammaTextureEffect::getGLProcessorKey(const GrBatchTracker& bt,
                                                             const GrGLCaps& caps,
                                                             GrProcessorKeyBuilder* b) const {
     GrGLDistanceFieldNoGammaTextureEffect::GenKey(*this, bt, caps, b);
 }
 
-GrGLGeometryProcessor*
-GrDistanceFieldNoGammaTextureEffect::createGLInstance(const GrBatchTracker& bt) const {
+GrGLPrimitiveProcessor*
+GrDistanceFieldNoGammaTextureEffect::createGLInstance(const GrBatchTracker& bt,
+                                                      const GrGLCaps&) const {
     return SkNEW_ARGS(GrGLDistanceFieldNoGammaTextureEffect, (*this, bt));
 }
 
 void GrDistanceFieldNoGammaTextureEffect::initBatchTracker(GrBatchTracker* bt,
                                                            const InitBT& init) const {
     DistanceFieldNoGammaBatchTracker* local = bt->cast<DistanceFieldNoGammaBatchTracker>();
     local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init,
                                                SkToBool(fInColor));
     local->fUsesLocalCoords = init.fUsesLocalCoords;
 }
@@ skipping 47 matching lines @@
 };
 
 class GrGLDistanceFieldLCDTextureEffect : public GrGLGeometryProcessor {
 public:
     GrGLDistanceFieldLCDTextureEffect(const GrGeometryProcessor&,
                                       const GrBatchTracker&)
     : fColor(GrColor_ILLEGAL)
     , fTextureSize(SkISize::Make(-1,-1))
     , fTextColor(GrColor_ILLEGAL) {}
 
-    virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+    virtual void emitCode(EmitArgs& args) SK_OVERRIDE {
         const GrDistanceFieldLCDTextureEffect& dfTexEffect =
                 args.fGP.cast<GrDistanceFieldLCDTextureEffect>();
         const DistanceFieldLCDBatchTracker& local = args.fBT.cast<DistanceFieldLCDBatchTracker>();
         GrGLGPBuilder* pb = args.fPB;
 
         GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
+
+        // emit attributes
+        vsBuilder->emitAttributes(dfTexEffect);
+
         GrGLVertToFrag v(kVec2f_GrSLType);
         args.fPB->addVarying("TextureCoords", &v);
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName);
 
         // setup pass through color
         this->setupColorPassThrough(pb, local.fInputColorType, args.fOutputColor, NULL,
                                     &fColorUniform);
 
-        // setup coord outputs
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(),
-                               dfTexEffect.inPosition()->fName);
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(),
-                               dfTexEffect.inPosition()->fName);
-
         // setup uniform viewMatrix
         this->addUniformViewMatrix(pb);
 
-        // setup position varying
-        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(), this->uViewM(),
+        // Setup position
+        const char* pos3 = "pos3";
+        vsBuilder->codeAppendf("vec3 %s;", pos3);
+        vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", pos3, this->uViewM(),
                                dfTexEffect.inPosition()->fName);
 
+        // emit transforms
+        this->emitTransforms(args.fPB, pos3, dfTexEffect.inPosition()->fName,
+                             dfTexEffect.localMatrix(), args.fTransformsIn, args.fTransformsOut);
+
+        vsBuilder->transformToNormalizedDeviceSpace(pos3);
+
         const char* textureSizeUniName = NULL;
         // width, height, 1/(3*width)
         fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                               kVec3f_GrSLType, kDefault_GrSLPrecision,
                                               "TextureSize", &textureSizeUniName);
 
         GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
 
         SkAssertResult(fsBuilder->enableFeature(
                 GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature));
@@ skipping 195 matching lines @@
     out->setUnknownFourComponents();
     out->setUsingLCDCoverage();
 }
 
 void GrDistanceFieldLCDTextureEffect::getGLProcessorKey(const GrBatchTracker& bt,
                                                         const GrGLCaps& caps,
                                                         GrProcessorKeyBuilder* b) const {
     GrGLDistanceFieldLCDTextureEffect::GenKey(*this, bt, caps, b);
 }
 
-GrGLGeometryProcessor*
-GrDistanceFieldLCDTextureEffect::createGLInstance(const GrBatchTracker& bt) const {
+GrGLPrimitiveProcessor*
+GrDistanceFieldLCDTextureEffect::createGLInstance(const GrBatchTracker& bt,
+                                                  const GrGLCaps&) const {
     return SkNEW_ARGS(GrGLDistanceFieldLCDTextureEffect, (*this, bt));
 }
 
 void GrDistanceFieldLCDTextureEffect::initBatchTracker(GrBatchTracker* bt,
                                                        const InitBT& init) const {
     DistanceFieldLCDBatchTracker* local = bt->cast<DistanceFieldLCDBatchTracker>();
     local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init, false);
     local->fUsesLocalCoords = init.fUsesLocalCoords;
 }
 
@@ skipping 40 matching lines @@
     uint32_t flags = kUseLCD_DistanceFieldEffectFlag;
     flags |= random->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0;
     flags |= random->nextBool() ? kBGR_DistanceFieldEffectFlag : 0;
     return GrDistanceFieldLCDTextureEffect::Create(GrRandomColor(random),
                                                    GrProcessorUnitTest::TestMatrix(random),
                                                    textures[texIdx], params,
                                                    textures[texIdx2], params2,
                                                    textColor,
                                                    flags);
 }