Revert of Move DstCopy on gpu into the GrXferProcessor.

src/gpu/gl/GrGLProgram.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLProgram.h"
 
 #include "GrAllocator.h"
@@ skipping 43 matching lines @@
     }
 }
 
 void GrGLProgram::abandon() {
     fProgramID = 0;
 }
 
 void GrGLProgram::initSamplerUniforms() {
     GL_CALL(UseProgram(fProgramID));
     GrGLint texUnitIdx = 0;
+    if (fBuiltinUniformHandles.fDstCopySamplerUni.isValid()) {
+        fProgramDataManager.setSampler(fBuiltinUniformHandles.fDstCopySamplerUni, texUnitIdx);
+        fDstCopyTexUnit = texUnitIdx++;
+    }
     this->initSamplers(fGeometryProcessor.get(), &texUnitIdx);
     if (fXferProcessor.get()) {
         this->initSamplers(fXferProcessor.get(), &texUnitIdx);
     }
     int numProcs = fFragmentProcessors->fProcs.count();
     for (int i = 0; i < numProcs; i++) {
         this->initSamplers(fFragmentProcessors->fProcs[i], &texUnitIdx);
     }
 }
 
@@ skipping 22 matching lines @@
     }
 }
 
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrGLProgram::setData(const GrPrimitiveProcessor& primProc, const GrPipeline& pipeline,
                           const GrBatchTracker& batchTracker) {
     this->setRenderTargetState(primProc, pipeline);
 
+    const GrDeviceCoordTexture* dstCopy = pipeline.getDstCopy();
+    if (dstCopy) {
+        if (fBuiltinUniformHandles.fDstCopyTopLeftUni.isValid()) {
+            fProgramDataManager.set2f(fBuiltinUniformHandles.fDstCopyTopLeftUni,
+                                       static_cast<GrGLfloat>(dstCopy->offset().fX),
+                                       static_cast<GrGLfloat>(dstCopy->offset().fY));
+            fProgramDataManager.set2f(fBuiltinUniformHandles.fDstCopyScaleUni,
+                                       1.f / dstCopy->texture()->width(),
+                                       1.f / dstCopy->texture()->height());
+            GrGLTexture* texture = static_cast<GrGLTexture*>(dstCopy->texture());
+            static GrTextureParams kParams; // the default is clamp, nearest filtering.
+            fGpu->bindTexture(fDstCopyTexUnit, kParams, texture);
+        } else {
+            SkASSERT(!fBuiltinUniformHandles.fDstCopyScaleUni.isValid());
+            SkASSERT(!fBuiltinUniformHandles.fDstCopySamplerUni.isValid());
+        }
+    } else {
+        SkASSERT(!fBuiltinUniformHandles.fDstCopyTopLeftUni.isValid());
+        SkASSERT(!fBuiltinUniformHandles.fDstCopyScaleUni.isValid());
+        SkASSERT(!fBuiltinUniformHandles.fDstCopySamplerUni.isValid());
+    }
+
     // we set the textures, and uniforms for installed processors in a generic way, but subclasses
     // of GLProgram determine how to set coord transforms
     fGeometryProcessor->fGLProc->setData(fProgramDataManager, primProc, batchTracker);
     this->bindTextures(fGeometryProcessor.get(), primProc);
 
-    const GrXferProcessor& xp = *pipeline.getXferProcessor();
-    fXferProcessor->fGLProc->setData(fProgramDataManager, xp);
-    this->bindTextures(fXferProcessor.get(), xp);
-
+    if (fXferProcessor.get()) {
+        const GrXferProcessor& xp = *pipeline.getXferProcessor();
+        fXferProcessor->fGLProc->setData(fProgramDataManager, xp);
+        this->bindTextures(fXferProcessor.get(), xp);
+    }
     this->setFragmentData(primProc, pipeline);
 
     // Some of GrGLProgram subclasses need to update state here
     this->didSetData();
 }
 
 void GrGLProgram::setFragmentData(const GrPrimitiveProcessor& primProc,
                                   const GrPipeline& pipeline) {
     int numProcessors = fFragmentProcessors->fProcs.count();
     for (int e = 0; e < numProcessors; ++e) {
@@ skipping 77 matching lines @@
 
 void GrGLNvprProgram::onSetRenderTargetState(const GrPrimitiveProcessor& primProc,
                                              const GrPipeline& pipeline) {
     SkASSERT(!primProc.willUseGeoShader() && primProc.numAttribs() == 0);
     const GrRenderTarget* rt = pipeline.getRenderTarget();
     SkISize size;
     size.set(rt->width(), rt->height());
     fGpu->glPathRendering()->setProjectionMatrix(primProc.viewMatrix(),
                                                  size, rt->origin());
 }