1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_HWUI_DITHER_H
18#define ANDROID_HWUI_DITHER_H
19
20#include <GLES2/gl2.h>
21
22#include "Program.h"
23
24namespace android {
25namespace uirenderer {
26
27/**
28 * Handles dithering for programs.
29 */
30class Dither {
31public:
32    Dither(): mInitialized(false), mDitherTexture(0) { }
33
34    void clear();
35    void setupProgram(Program* program, GLuint* textureUnit);
36
37private:
38    void bindDitherTexture();
39
40    bool mInitialized;
41    GLuint mDitherTexture;
42};
43
44}; // namespace uirenderer
45}; // namespace android
46
47#endif // ANDROID_HWUI_DITHER_H
48