Use combined color/coverage attribute when possible in aa rect renderer.

src/gpu/GrContext.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 "GrContext.h"
@@ skipping 708 matching lines @@
     verts[2].set(rect.fRight - rad, rect.fTop + rad);
     verts[3].set(rect.fRight + rad, rect.fTop - rad);
     verts[4].set(rect.fRight - rad, rect.fBottom - rad);
     verts[5].set(rect.fRight + rad, rect.fBottom + rad);
     verts[6].set(rect.fLeft + rad, rect.fBottom - rad);
     verts[7].set(rect.fLeft - rad, rect.fBottom + rad);
     verts[8] = verts[0];
     verts[9] = verts[1];
 }
 
+static inline bool is_irect(const SkRect& r) {
+  return SkScalarIsInt(r.fLeft)  && SkScalarIsInt(r.fTop) &&    
+         SkScalarIsInt(r.fRight) && SkScalarIsInt(r.fBottom);   
+}
+
 static bool apply_aa_to_rect(GrDrawTarget* target,
                              const SkRect& rect,
                              SkScalar strokeWidth,
                              const SkMatrix& combinedMatrix,
                              SkRect* devBoundRect) {
     if (!target->getDrawState().canTweakAlphaForCoverage() &&
         target->shouldDisableCoverageAAForBlend()) {
 #ifdef SK_DEBUG
         //GrPrintf("Turning off AA to correctly apply blend.\n");
 #endif
@@ skipping 13 matching lines @@
 
 #if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT)
     } else {
         if (!combinedMatrix.preservesRightAngles()) {
             return false;
         }
     }
 #endif
 
     combinedMatrix.mapRect(devBoundRect, rect);
+    if (strokeWidth < 0) {
+        return !is_irect(*devBoundRect);
+    }
 
     return true;
 }
 
 static inline bool rect_contains_inclusive(const SkRect& rect, const SkPoint& point) {
     return point.fX >= rect.fLeft && point.fX <= rect.fRight &&
            point.fY >= rect.fTop && point.fY <= rect.fBottom;
 }
 
 void GrContext::drawRect(const GrPaint& paint,
@@ skipping 1151 matching lines @@
         fDrawBuffer->removeGpuTraceMarker(marker);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 #if GR_CACHE_STATS
 void GrContext::printCacheStats() const {
     fResourceCache->printStats();
 }
 #endif