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      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 <SmartPtr.h>
     23 
     24 class ColorBuffer
     25 {
     26 public:
     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 
     42 private:
     43     ColorBuffer();
     44     void drawTexQuad(bool flipy);
     45     bool bind_fbo();  // binds a fbo which have this texture as render target
     46 
     47 private:
     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     bool m_warYInvertBug;
     57 };
     58 
     59 typedef SmartPtr<ColorBuffer> ColorBufferPtr;
     60 
     61 #endif
     62