egl

I am asking this with reference to an answer for my question at How to improve opengl es display performance in android . I was trying to build the code which uses GraphicBuffer with ndk-r9d. but It is saying GraphicBuffer is not declared in this scope. The same comments for eglCreateImageKHR and glEGLImageTargetTexture2DOES. I have added EGL/eglext.h and GLES2/gl2ext.h . I tried to include ui/GraphicBuffer.h but it is not taking it. Is there another header file to be added ? The code given below I have added to avoid use of glTexSubImage2D(). GraphicBuffer * pGraphicBuffer = new GraphicBuffer

the version android is 2.2.1 the device is a samsung galaxy II the full crash log is: java.lang.RuntimeException: createWindowSurface failed: EGL_BAD_MATCH at android.opengl.GLSurfaceView$EglHelper.throwEglException(GLSurfaceView.java:1077) at android.opengl.GLSurfaceView$EglHelper.createSurface(GLSurfaceView.java:981) at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1304) at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1116) this is the relevant code to the crash: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate

I want to create a SurfaceTexture with an OpenGL texture that I can manage, in a setup similar to this answer . (Quoted here:) Create a texture through OpenGL Pass this texture to the constructor of new SurfaceTexture. Give this new SurfaceTexture to the camera. Make sure you are using OES_External (see documentation for details). However, creating an OpenGL texture (as in step 1 of the answer), requires an EGL context , which requires a EGLSurface to be made current, which requires a SurfaceTexture. It seems the only way of creating the EGL context is by creating a SurfaceView (or another

video_refresh_thread 该线程负责图像的渲染，先来看下整体流程： 从上面的流程图可以得知，最终根据格式的差异分成了三个分支，我们先来看下func_display_overlay_l()的源码，然后再继续深入三个分支中。 static int func_display_overlay_l(SDL_Vout *vout, SDL_VoutOverlay *overlay) { SDL_Vout_Opaque *opaque = vout->opaque; ANativeWindow *native_window = opaque->native_window; if (!native_window) { if (!opaque->null_native_window_warned) { opaque->null_native_window_warned = 1; ALOGW("func_display_overlay_l: NULL native_window"); } return -1; } else { opaque->null_native_window_warned = 1; } if (!overlay) { ALOGE("func_display_overlay_l: NULL overlay"); return -1; } if (overlay->w

I'm writing an implementation for OpenVG and OpenGL|ES in Go , both of which depend on the Khronos EGL API , supposedly to ease portability I guess. I'm writing an implementation of OpenVG on top of OpenGL ES for fun and educational reasons - I haven't done a lot of rendering work and I'd like to learn more about the open APIs and practice implementing well defined standards (easier to see if I got the right results). As I understand it, EGL provides a standard API for retrieving a drawing context (or what ever it's rightly called,) instead of using one of the multiple OS provided APIs (GLX,

Can Anybody explain me what is EGL and what it does? How can i use EGL with OpenGL-ES On Linux? Is EGL a Layer Between Hardware And Operating System? EGL is a window system-independent equivalent to the GLX and WGL APIs, which respectively enable OpenGL support in X and Microsoft Windows. It is an interface between Khronos rendering APIs such as OpenGL ES or OpenVG and the underlying native platform window system. It handles graphics context management, surface/buffer binding, and rendering synchronization and enables high-performance, accelerated, mixed-mode 2D and 3D rendering using other