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Depth Buffer

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Does anyone know of a way to write back to the depth buffer? The problem is that using glDrawPixels, you can only write to the colour buffer. eg; glReadPixels(0,0,width,height,GL_DEPTH_COMPONENT,GL_FLOAT,pixels); glDrawPixels(0,0,GL_DEPTH_COMPONENT,GL_FLOAT,pixels); will give you a greyscale image of your depth map. It doesn''t send the data into the depth buffer. Thanks in advance

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no problem.

basically I''m using it to pre-render backgrounds in a program where the camera spends half of its time in the same position.
Mine''s an animation, but I''m also planning on using it in an RTS so I can add alot more detail to the terrain (tree''s and the ground don''t usually walk away)

I''ve found a way to render to get the depth into it and still keep the previous image, but it''s not as simple (save-load) as I had hoped.

Thanks for the input anyway!

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