Implement drawDRRect for GPU

src/gpu/SkGpuDevice.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 "SkGpuDevice.h"
 
 #include "effects/GrBicubicEffect.h"
@@ skipping 638 matching lines @@
                                                                         stroke, devRRect)) {
                         return;
                     }
                 }
 
             }
         }
 
     }
 
-    bool usePath = !rect.isSimple();
-    // another two reasons we might need to call drawPath...
     if (paint.getMaskFilter() || paint.getPathEffect()) {
-        usePath = true;
-    }
-    // until we can rotate rrects...
-    if (!usePath && !fContext->getMatrix().rectStaysRect()) {
-        usePath = true;
-    }
-
-    if (usePath) {
         SkPath path;
         path.addRRect(rect);
         this->drawPath(draw, path, paint, NULL, true);
         return;
     }
 
     fContext->drawRRect(grPaint, rect, stroke);
 }
 
+void SkGpuDevice::drawDRRect(const SkDraw& draw, const SkRRect& outer,
+                              const SkRRect& inner, const SkPaint& paint) {
+    SkStrokeRec stroke(paint);
+    if (stroke.isFillStyle()) {
+
+        CHECK_FOR_ANNOTATION(paint);
+        CHECK_SHOULD_DRAW(draw, false);
+
+        GrPaint grPaint;
+        if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
+            return;
+        }
+
+        if (NULL == paint.getMaskFilter() && NULL == paint.getPathEffect()) {
+            fContext->drawDRRect(grPaint, outer, inner);
+            return;
+        }
+    }
+
+    SkPath path;
+    path.addRRect(outer);
+    path.addRRect(inner);
+    path.setFillType(SkPath::kEvenOdd_FillType);
+
+    this->drawPath(draw, path, paint, NULL, true);
+}
+
+
 /////////////////////////////////////////////////////////////////////////////
 
 void SkGpuDevice::drawOval(const SkDraw& draw, const SkRect& oval,
                            const SkPaint& paint) {
     CHECK_FOR_ANNOTATION(paint);
     CHECK_SHOULD_DRAW(draw, false);
 
     bool usePath = false;
     // some basic reasons we might need to call drawPath...
     if (paint.getMaskFilter() || paint.getPathEffect()) {
@@ skipping 1284 matching lines @@
             const GrAtlasedLayer* layer = fContext->getLayerCache()->findLayerOrCreate(picture, i);
 
             SkDebugf("%d (%d), ", i, layer->layerID());
         }
     }
     SkDebugf("\n");
 #endif
 
     return false;
 }