Add option to draw wireframe batch bounds

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 25 matching lines @@
                            const Options& options)
     : fGpu(SkRef(gpu))
     , fResourceProvider(resourceProvider)
     , fFlushing(false)
     , fFlags(0)
     , fRenderTarget(rt) {
     // TODO: Stop extracting the context (currently needed by GrClipMaskManager)
     fContext = fGpu->getContext();
     fClipMaskManager.reset(new GrClipMaskManager(this, options.fClipBatchToBounds));
 
+    fDrawBatchBounds = options.fDrawBatchBounds;
+
     rt->setLastDrawTarget(this);
 
 #ifdef SK_DEBUG
     static int debugID = 0;
     fDebugID = debugID++;
 #endif
 }
 
 GrDrawTarget::~GrDrawTarget() {
     if (fRenderTarget && this == fRenderTarget->getLastDrawTarget()) {
@@ skipping 132 matching lines @@
     this->makeClosed();
 
     // Loop over the batches that haven't yet generated their geometry
     for (int i = 0; i < fBatches.count(); ++i) {
         fBatches[i]->prepare(flushState);
     }
 }
 
 void GrDrawTarget::drawBatches(GrBatchFlushState* flushState) {
     // Draw all the generated geometry.
+    SkRandom random;
     for (int i = 0; i < fBatches.count(); ++i) {
+        if (fDrawBatchBounds) {
+            const SkRect& bounds = fBatches[i]->bounds();
+            SkIRect ibounds;
+            bounds.roundOut(&ibounds);
+            // In multi-draw buffer all the batches use the same render target and we won't need to
+            // get the batchs bounds.
+            if (GrRenderTarget* rt = fBatches[i]->renderTarget()) {
+                fGpu->drawDebugWireRect(rt, ibounds, 0xFF000000 | random.nextU());
+            }
+        }
         fBatches[i]->draw(flushState);
     }
 
     fFlushing = false;
 }
 
 void GrDrawTarget::reset() {
     fBatches.reset();
 }
 
@@ skipping 346 matching lines @@
     }
 
     return true;
 }
 
 void GrDrawTarget::clearStencilClip(const SkIRect& rect, bool insideClip, GrRenderTarget* rt) {
     GrBatch* batch = new GrClearStencilClipBatch(rect, insideClip, rt);
     this->recordBatch(batch);
     batch->unref();
 }