Revert of Move copy-surface-as-draw fallback to GrGLGpu.

src/gpu/GrDrawTarget.cpp

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDrawTarget.h"
 
@@ skipping 82 matching lines @@
     desc.fHeight = copyRect.height();
 
     SkAutoTUnref<GrTexture> copy(fContext->textureProvider()->refScratchTexture(desc,
         GrTextureProvider::kApprox_ScratchTexMatch));
 
     if (!copy) {
         SkDebugf("Failed to create temporary copy of destination texture.\n");
         return false;
     }
     SkIPoint dstPoint = {0, 0};
-    this->copySurface(copy, rt, copyRect, dstPoint);
-    dstCopy->setTexture(copy);
-    dstCopy->setOffset(copyRect.fLeft, copyRect.fTop);
-    return true;
+    if (this->copySurface(copy, rt, copyRect, dstPoint)) {
+        dstCopy->setTexture(copy);
+        dstCopy->setOffset(copyRect.fLeft, copyRect.fTop);
+        return true;
+    } else {
+        return false;
+    }
 }
 
 void GrDrawTarget::flush() {
     if (fFlushing) {
         return;
     }
     fFlushing = true;
 
     this->getGpu()->saveActiveTraceMarkers();
 
@@ skipping 294 matching lines @@
     if (clippedDstPoint->fY + clippedSrcRect->height() > dst->height()) {
         clippedSrcRect->fBottom = clippedSrcRect->fTop + dst->height() - clippedDstPoint->fY;
     }
 
     // The above clipping steps may have inverted the rect if it didn't intersect either the src or
     // dst bounds.
     return !clippedSrcRect->isEmpty();
 }
 }
 
-void GrDrawTarget::copySurface(GrSurface* dst,
+bool GrDrawTarget::copySurface(GrSurface* dst,
                                GrSurface* src,
                                const SkIRect& srcRect,
                                const SkIPoint& dstPoint) {
     SkASSERT(dst);
     SkASSERT(src);
 
     SkIRect clippedSrcRect;
     SkIPoint clippedDstPoint;
     // If the rect is outside the src or dst then we've already succeeded.
     if (!clip_srcrect_and_dstpoint(dst,
                                    src,
                                    srcRect,
                                    dstPoint,
                                    &clippedSrcRect,
                                    &clippedDstPoint)) {
-        return;
+        return true;
     }
 
-    this->onCopySurface(dst, src, clippedSrcRect, clippedDstPoint);
+    if (this->getGpu()->canCopySurface(dst, src, clippedSrcRect, clippedDstPoint)) {
+        this->onCopySurface(dst, src, clippedSrcRect, clippedDstPoint);
+        return true;
+    }
+
+    GrRenderTarget* rt = dst->asRenderTarget();
+    GrTexture* tex = src->asTexture();
+
+    if ((dst == src) || !rt || !tex) {
+        return false;
+    }
+
+    GrPipelineBuilder pipelineBuilder;
+    pipelineBuilder.setRenderTarget(rt);
+    SkMatrix matrix;
+    matrix.setTranslate(SkIntToScalar(clippedSrcRect.fLeft - clippedDstPoint.fX),
+                        SkIntToScalar(clippedSrcRect.fTop - clippedDstPoint.fY));
+    matrix.postIDiv(tex->width(), tex->height());
+    pipelineBuilder.addColorTextureProcessor(tex, matrix);
+    SkIRect dstRect = SkIRect::MakeXYWH(clippedDstPoint.fX,
+                                        clippedDstPoint.fY,
+                                        clippedSrcRect.width(),
+                                        clippedSrcRect.height());
+    this->drawSimpleRect(&pipelineBuilder, GrColor_WHITE, SkMatrix::I(), dstRect);
+    return true;
+}
+
+bool GrDrawTarget::canCopySurface(const GrSurface* dst,
+                                  const GrSurface* src,
+                                  const SkIRect& srcRect,
+                                  const SkIPoint& dstPoint) {
+    SkASSERT(dst);
+    SkASSERT(src);
+
+    SkIRect clippedSrcRect;
+    SkIPoint clippedDstPoint;
+    // If the rect is outside the src or dst then we're guaranteed success
+    if (!clip_srcrect_and_dstpoint(dst,
+                                   src,
+                                   srcRect,
+                                   dstPoint,
+                                   &clippedSrcRect,
+                                   &clippedDstPoint)) {
+        return true;
+    }
+    return ((dst != src) && dst->asRenderTarget() && src->asTexture()) ||
+           this->getGpu()->canCopySurface(dst, src, clippedSrcRect, clippedDstPoint);
 }
 
 void GrDrawTarget::setupPipeline(const PipelineInfo& pipelineInfo,
                                  GrPipeline* pipeline) {
     SkNEW_PLACEMENT_ARGS(pipeline, GrPipeline, (*pipelineInfo.fPipelineBuilder,
                                                 pipelineInfo.fColorPOI,
                                                 pipelineInfo.fCoveragePOI,
                                                 *this->caps(),
                                                 *pipelineInfo.fScissor,
                                                 &pipelineInfo.fDstCopy));
@@ skipping 278 matching lines @@
                              GrPipelineBuilder::AutoRestoreFragmentProcessors* arfp,
                              GrPipelineBuilder::AutoRestoreStencil* ars,
                              GrScissorState* scissorState,
                              const SkRect* devBounds) {
     return fClipMaskManager.setupClipping(pipelineBuilder,
                                           arfp,
                                           ars,
                                           scissorState,
                                           devBounds);
 }