Move most of the transform logic into the primitive processors

src/gpu/effects/GrBitmapTextGeoProc.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 "GrBitmapTextGeoProc.h"
 #include "GrInvariantOutput.h"
 #include "GrTexture.h"
 #include "gl/GrGLProcessor.h"
 #include "gl/GrGLSL.h"
 #include "gl/GrGLTexture.h"
 #include "gl/GrGLGeometryProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
 struct BitmapTextBatchTracker {
     GrGPInput fInputColorType;
     GrColor fColor;
     bool fUsesLocalCoords;
 };
 
 class GrGLBitmapTextGeoProc : public GrGLGeometryProcessor {
 public:
     GrGLBitmapTextGeoProc(const GrGeometryProcessor&, const GrBatchTracker&)
         : fColor(GrColor_ILLEGAL) {}
 
-    virtual void emitCode(const EmitArgs& args) SK_OVERRIDE {
+    virtual void emitCode(EmitArgs& args) SK_OVERRIDE {
         const GrBitmapTextGeoProc& cte = args.fGP.cast<GrBitmapTextGeoProc>();
         const BitmapTextBatchTracker& local = args.fBT.cast<BitmapTextBatchTracker>();
 
         GrGLGPBuilder* pb = args.fPB;
         GrGLVertexBuilder* vsBuilder = pb->getVertexShaderBuilder();
 
+        // emit attributes
+        vsBuilder->emitAttributes(cte);
+
         GrGLVertToFrag v(kVec2f_GrSLType);
         pb->addVarying("TextureCoords", &v);
         vsBuilder->codeAppendf("%s = %s;", v.vsOut(), cte.inTextureCoords()->fName);
 
         // Setup pass through color
         this->setupColorPassThrough(pb, local.fInputColorType, args.fOutputColor, cte.inColor(),
                                     &fColorUniform);
 
-        // setup output coords
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(), cte.inPosition()->fName);
-        vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(), cte.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(),
                                cte.inPosition()->fName);
 
+        // emit transforms
+        this->emitTransforms(args.fPB, pos3, cte.inPosition()->fName, cte.localMatrix(),
+                             args.fTransformsIn, args.fTransformsOut);
+
+        vsBuilder->transformToNormalizedDeviceSpace(pos3);
+
         GrGLGPFragmentBuilder* fsBuilder = pb->getFragmentShaderBuilder();
         fsBuilder->codeAppendf("%s = ", args.fOutputCoverage);
         fsBuilder->appendTextureLookup(args.fSamplers[0], v.fsIn(), kVec2f_GrSLType);
         fsBuilder->codeAppend(";");
     }
 
     virtual void setData(const GrGLProgramDataManager& pdman,
                          const GrPrimitiveProcessor& gp,
                          const GrBatchTracker& bt) SK_OVERRIDE {
         this->setUniformViewMatrix(pdman, gp.viewMatrix());
@@ skipping 64 matching lines @@
         out->setUsingLCDCoverage();
     }
 }
 
 void GrBitmapTextGeoProc::getGLProcessorKey(const GrBatchTracker& bt,
                                             const GrGLCaps& caps,
                                             GrProcessorKeyBuilder* b) const {
     GrGLBitmapTextGeoProc::GenKey(*this, bt, caps, b);
 }
 
-GrGLGeometryProcessor*
-GrBitmapTextGeoProc::createGLInstance(const GrBatchTracker& bt) const {
+GrGLPrimitiveProcessor*
+GrBitmapTextGeoProc::createGLInstance(const GrBatchTracker& bt,
+                                      const GrGLCaps& caps) const {
     return SkNEW_ARGS(GrGLBitmapTextGeoProc, (*this, bt));
 }
 
 void GrBitmapTextGeoProc::initBatchTracker(GrBatchTracker* bt, const InitBT& init) const {
     BitmapTextBatchTracker* local = bt->cast<BitmapTextBatchTracker>();
     local->fInputColorType = GetColorInputType(&local->fColor, this->color(), init,
                                                SkToBool(fInColor));
     local->fUsesLocalCoords = init.fUsesLocalCoords;
 }
 
@@ skipping 27 matching lines @@
         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
     };
     GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :
                                                            GrTextureParams::kNone_FilterMode);
 
     return GrBitmapTextGeoProc::Create(GrRandomColor(random), textures[texIdx], params,
                                        random->nextBool(), random->nextBool(),
                                        GrProcessorUnitTest::TestMatrix(random));
 }