Hi, I need to render an offscreen image with a resolution of 2048x2048, and I'm sure that the graphics card can do that because the max framebuffer size is 8192x8192. I'm doing that by using a newly instanced CompositeViewer with Qt and by calling once frame(), then a screenshot callback captures the framebuffer. The problem is: if the current MONITOR screen has a resolution of 1024x768, the offscreen shot is rendered only in the 1024x768 corner of the whole buffer size (2048x2048), the rest is black. The aspect ratio of that piece is correct though, i.e. the projection matrix is correctly set to render the resolution of 2048x2048. You can see the problem in the attached shots, one is the fullscreen resolution, the other is the 2048x2048 offscreen shot.
fullscreen: http://cl.ly/2s2M0D3Q090R2w1r2w44 offscreen: http://cl.ly/390L1k2o2k1B2P1r312r Do you know what could be the problem? Thanks in advance Marco
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