Add GrAAHairLinePathRenderer
Review URL: http://codereview.appspot.com/4926045
git-svn-id: http://skia.googlecode.com/svn/trunk@2196 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrPathRenderer.h b/gpu/src/GrPathRenderer.h
index 25dfafb..4694de5 100644
--- a/gpu/src/GrPathRenderer.h
+++ b/gpu/src/GrPathRenderer.h
@@ -52,13 +52,28 @@
/**
* Returns true if this path renderer is able to render the path.
* Returning false allows the caller to fallback to another path renderer.
+ * When searching for a path renderer capable of rendering a path this
+ * function is called. The path renderer can examine the path, fill rule,
+ * and draw settings that will be used (via the targetparameter). If "true"
+ * is reported note that the caller is permitted to make modifications to
+ * the following settings of the target between the calls to canDrawPath and
+ * drawPath:
+ * 1. view matrix: The matrix at drawPath time may have additional scale
+ * scale and translation applied
+ * 2. render target: The render target may change between canDrawPath
+ * and drawPath.
+ * The GrPathRenderer subclass's decision about whether to return true
+ * or false in its implementation of this function should consider these
+ * possible state changes.
*
* @param path The path to draw
* @param fill The fill rule to use
*
* @return true if the path can be drawn by this object, false otherwise.
*/
- virtual bool canDrawPath(const SkPath& path, GrPathFill fill) const = 0;
+ virtual bool canDrawPath(const GrDrawTarget* target,
+ const SkPath& path,
+ GrPathFill fill) const = 0;
/**
* For complex clips Gr uses the stencil buffer. The path renderer must be