First pass at Rect Effect

https://codereview.chromium.org/13521006/



git-svn-id: http://skia.googlecode.com/svn/trunk@8571 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 15 insertions, 1 deletions

diff --git a/include/core/SkMatrix.h b/include/core/SkMatrix.h
index 87599d4cfb..f148e390b5 100644
--- a/include/core/SkMatrix.h
+++ b/include/core/SkMatrix.h
@@ -90,6 +90,12 @@ public:
      */
     bool isSimilarity(SkScalar tol = SK_ScalarNearlyZero) const;
 
+    /** Returns true if the matrix contains only translation, rotation or scale
+        (non-uniform scale is allowed).
+        Returns false if other transformation types are included or is degenerate
+     */
+    bool preservesRightAngles(SkScalar tol = SK_ScalarNearlyZero) const;
+
     enum {
         kMScaleX,
         kMSkewX,
diff --git a/include/gpu/GrAARectRenderer.h b/include/gpu/GrAARectRenderer.h
index 0cf7faac05..84dd52fe94 100644
--- a/include/gpu/GrAARectRenderer.h
+++ b/include/gpu/GrAARectRenderer.h
@@ -15,6 +15,7 @@
 class GrGpu;
 class GrDrawTarget;
 class GrIndexBuffer;
+class SkMatrix;
 
 /*
  * This class wraps helper functions that draw AA rects (filled & stroked)
@@ -35,7 +36,7 @@ public:
     }
 
     // TODO: potentialy fuse the fill & stroke methods and differentiate
-    // btween them by passing in strokeWidth (<0 means fill).
+    // between them by passing in strokeWidth (<0 means fill).
 
     // TODO: Remove the useVertexCoverage boolean. Just use it all the time
     // since we now have a coverage vertex attribute
@@ -44,6 +45,13 @@ public:
                     const GrRect& devRect,
                     bool useVertexCoverage);
 
+    void shaderFillAARect(GrGpu* gpu,
+                          GrDrawTarget* target,
+                          const GrRect& rect,
+                          const SkMatrix& combinedMatrix,
+                          const GrRect& devRect,
+                          bool useVertexCoverage);
+
     void strokeAARect(GrGpu* gpu,
                       GrDrawTarget* target,
                       const GrRect& devRect,