Minimize use of SkDraw's matrix in SkGpuDevice.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6604068

git-svn-id: http://skia.googlecode.com/svn/trunk@5906 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 14 insertions, 0 deletions

diff --git a/include/core/SkClipStack.h b/include/core/SkClipStack.h
index 2ab118d5a7..a67e0a5dd9 100644
--- a/include/core/SkClipStack.h
+++ b/include/core/SkClipStack.h
@@ -63,6 +63,13 @@ public:
                    BoundsType* boundType,
                    bool* isIntersectionOfRects = NULL) const;
 
+    /**
+     * Takes an input rect in device space and conservatively clips it to the
+     * clip-stack. If false is returned then the rect does not intersect the
+     * clip and is unmodified.
+     */
+    bool intersectRectWithClip(SkRect* devRect) const;
+
     void clipDevRect(const SkIRect& ir, SkRegion::Op op) {
         SkRect r;
         r.set(ir);
diff --git a/include/core/SkRect.h b/include/core/SkRect.h
index 23af56006c..21a37364d4 100644
--- a/include/core/SkRect.h
+++ b/include/core/SkRect.h
@@ -481,6 +481,13 @@ struct SK_API SkRect {
         fBottom = y + height;
     }
 
+    void setWH(SkScalar width, SkScalar height) {
+        fLeft = 0;
+        fTop = 0;
+        fRight = width;
+        fBottom = height;
+    }
+
     /**
      *  Make the largest representable rectangle
      */