glReadPixels is an OpenGL API function to read pixels data from source framebuffer to destination memory buffer. When FBO is supported, the source could be FBO; when PBO is supported, the destination could be PBO.
Questions tagged [glreadpixels]
197 questions
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OpenGL: glDrawArrays and glReadPixels in VBO
I am trying to implement a VBO in which I use glDrawArrays to draw a list of triangles and glReadPixels to read the output. The glReadPixels function is throwing a segmentation fault error.
This is the code that initializes and uses the VBO:
void…
jpaguerre
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glReadPixels save to BMP - Color Dirstortion
I'm using OpenGL and PCL_lib right now, And I want to draw a accessory on the background pic.
Here is my output_image on display:
Image source is PCD format(PCL lib), drew by OpenGL
and Here is my code where to save the GL_pic:
char…
Porter Chen
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