Finding the right context to take a screenshot with glReadPixels()...

GL_INVALID_FRAMEBUFFER_OPERATION Android NDK GL FrameBuffer and glReadPixels returns 0 0 0 0...

Converting data from glReadPixels() to OpenCV::Mat...

How can I save OpenGL draw with OpenGL?...

glReadPixels alpha value issue...

glReadPixels() slow on reading GL_DEPTH_COMPONENT...

Pixel formats, CVPixelBufferRefs and glReadPixels...

glReadPixels not working on iPhone...

glReadPixel stopped working with iOS6 Beta...

CVOpenGLESTextureCacheCreateTextureFromImage instead of glReadPixels...

OpenGL ES on iOS - glReadPixels() returns the image with a black bar on the side...

glReadPixels() returning non-accurate value...

How do I check whether a pixel is filled or not on a canvas in OpenGL?...

glReadPixels byte to float...

Asynchronous glReadPixels with PBO...

Reading data using glReadPixel() with multisampling...

simple 2D collision detection c++...

Qt / C++ - Converting raw binary data and display it as an image (i.e. QImage)...

Converting RGBA to ARGB (glReadPixels -> AVAssetWriter)...

glReadPixels with FBO is too slow...

glReadPixel returns zeros and error 1282 (Android)...

OpenGL: glReadPixels "fails" although glGetError returns 0...

OpenGL ES - Reducing texture quality and texture size...

Read Framebuffer-texture like an 1D array...

glReadPixels - image looks dithered...

OpenGLScreenSnapshot doesn't work in Mac OS X 10.7 - Lion...

Screencapturing using glReadPixels results in shifted pixels in some window resolutions...

glReadPixels returns wrong values...

Reading the pixels values from the Frame Buffer Object (FBO) using Pixel Buffer Object (PBO)...

glReadPixels clears buffer in openGL ES 2?...