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occurred Sep 16, 2012 at 3:01

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edited Sep 15, 2012 at 0:53

Nicol Bolas

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edited Sep 15, 2012 at 0:19

user827992

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I need a way to capture what is rendered on screen, i have read about glReadPixels but it looks really slow.

Can you suggest a more efficient or just an alternative way for just copying what is rendered by OpenGL 3.0+ to the local RAM and in general to output this in a image or in a data stream?

How i can achieve the same goal with OpenGL ES 2.0 ?

EDIT:

i just forgot: with this OpenGL functions how i can be sure that

I'm actually reading a complete frame, meaning that there is no overlapping between 2 frames or any nasty side effect

I'm actually reading the frame that comes right next to the previous one so i do not lose frames

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asked Sep 15, 2012 at 0:05

user827992

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OpenGL 3.0+ framebuffer to texture/images

I need a way to capture what is rendered on screen, i have read about glReadPixels but it looks really slow.

Can you suggest a more efficient or just an alternative way for just copying what is rendered by OpenGL 3.0+ to the local RAM and in general to output this in a image or in a data stream?

How i can achieve the same goal with OpenGL ES 2.0 ?

opengl textures opengl-es2 image frame-buffer

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OpenGL 3.0+ framebuffer to texture/images