Apply gamma correction to font rendering.

Change-Id: I1b05f40e356221b2a5eb9400e67d77ecd98ed6c4

1 files changed, 48 insertions, 0 deletions

diff --git a/libs/hwui/GammaFontRenderer.h b/libs/hwui/GammaFontRenderer.h
new file mode 100644
index 0000000..5fa45cf
--- /dev/null
+++ b/libs/hwui/GammaFontRenderer.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2010 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 ANDROID_UI_GAMMA_FONT_RENDERER_H
+#define ANDROID_UI_GAMMA_FONT_RENDERER_H
+
+#include <SkPaint.h>
+
+#include "FontRenderer.h"
+
+namespace android {
+namespace uirenderer {
+
+struct GammaFontRenderer {
+    GammaFontRenderer();
+
+    FontRenderer& getFontRenderer(const SkPaint* paint);
+
+private:
+    FontRenderer mDefaultRenderer;
+    FontRenderer mBlackGammaRenderer;
+    FontRenderer mWhiteGammaRenderer;
+
+    int mBlackThreshold;
+    int mWhiteThreshold;
+
+    uint8_t mDefault[256];
+    uint8_t mBlackGamma[256];
+    uint8_t mWhiteGamma[256];
+};
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_UI_GAMMA_FONT_RENDERER_H