1 files changed, 58 insertions, 0 deletions
diff --git a/libs/hwui/renderstate/Blend.h b/libs/hwui/renderstate/Blend.h
new file mode 100644
index 0000000..dcc681d
--- /dev/null
+++ b/libs/hwui/renderstate/Blend.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef RENDERSTATE_BLEND_H
+#define RENDERSTATE_BLEND_H
+
+#include "Vertex.h"
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <SkXfermode.h>
+#include <memory>
+
+namespace android {
+namespace uirenderer {
+
+class Blend {
+    friend class RenderState;
+public:
+    // dictates whether to swap src/dst
+    enum class ModeOrderSwap {
+        NoSwap,
+        Swap,
+    };
+
+    void enable(SkXfermode::Mode mode, ModeOrderSwap modeUsage);
+    void disable();
+    void syncEnabled();
+
+    static void getFactors(SkXfermode::Mode mode, ModeOrderSwap modeUsage,
+            GLenum* outSrc, GLenum* outDst);
+    void setFactors(GLenum src, GLenum dst);
+
+    void dump();
+private:
+    Blend();
+    void invalidate();
+    bool mEnabled;
+    GLenum mSrcMode;
+    GLenum mDstMode;
+};
+
+} /* namespace uirenderer */
+} /* namespace android */
+
+#endif // RENDERSTATE_BLEND_H