Infrastructure for new Ganesh shader pipeline: base classes for GPU
implementation of user-defined effects.

http://codereview.appspot.com/6052047/



git-svn-id: http://skia.googlecode.com/svn/trunk@3726 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrCustomStage.cpp b/src/gpu/GrCustomStage.cpp
new file mode 100644
index 0000000..f63c79a
--- /dev/null
+++ b/src/gpu/GrCustomStage.cpp
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2012 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"
+#include "GrCustomStage.h"
+
+GrCustomStage::GrCustomStage() {
+
+}
+
+GrCustomStage::~GrCustomStage() {
+
+}
+
+bool GrCustomStage::isOpaque(bool inputTextureIsOpaque) const {
+    return false;
+}
+