1/*
2* Copyright (C) 2011 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#ifndef _LIBRENDER_COLORBUFFER_H
17#define _LIBRENDER_COLORBUFFER_H
18
19#include <EGL/egl.h>
20#include <EGL/eglext.h>
21#include <GLES/gl.h>
22#include "emugl/common/smart_ptr.h"
23
24class ColorBuffer
25{
26public:
27    static ColorBuffer *create(int p_width, int p_height,
28                               GLenum p_internalFormat);
29    ~ColorBuffer();
30
31    GLuint getGLTextureName() const { return m_tex; }
32    GLuint getWidth() const { return m_width; }
33    GLuint getHeight() const { return m_height; }
34
35    void subUpdate(int x, int y, int width, int height, GLenum p_format, GLenum p_type, void *pixels);
36    bool post();
37    bool bindToTexture();
38    bool bindToRenderbuffer();
39    bool blitFromCurrentReadBuffer();
40    void readback(unsigned char* img);
41
42private:
43    ColorBuffer();
44    void drawTexQuad();
45    bool bind_fbo();  // binds a fbo which have this texture as render target
46
47private:
48    GLuint m_tex;
49    GLuint m_blitTex;
50    EGLImageKHR m_eglImage;
51    EGLImageKHR m_blitEGLImage;
52    GLuint m_width;
53    GLuint m_height;
54    GLuint m_fbo;
55    GLenum m_internalFormat;
56};
57
58typedef emugl::SmartPtr<ColorBuffer> ColorBufferPtr;
59
60#endif
61