The open gl es 2.0 extension,
OES_depth_texture, enables writing of depth information to frame buffer with an attached texture.
However, the spec not describe the usage of glReadPixels with such an extension. As far as I can tell glReadPixels will not work with such a Frame Buffer (I've tried, and get the invalid operation error).
Am I correct in this assumption? Does anyone know another reference to this issue? Or is there an alternative for reading from the attached texture to using glReadPixels?
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