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#ActualBornToCode

Posted 22 February 2013 - 11:06 AM

One of the problem i can see in this problem is that your textures will be down sampled when you apply 1024x1024 to a small quad. If you do not mind losing some information from the texture then that is fine. But if every pixel in that 1k*1k texture is important, then what you are trying to do is not going to work. Because as you downscale you lose information, so when you upscale it back to it's original size you are not going to get back the information you lose. Once it is is gone it is gone.


#2BornToCode

Posted 22 February 2013 - 11:04 AM

One of the problem i can see in this problem is that your textures will be down sampled when you apply 1024x1024 to a small quad. If you do not mind losing some information from the texture then that is fine. But if every pixel in that 1k*1k texture is important, then what you are trying to do is not going to work.


#1BornToCode

Posted 22 February 2013 - 11:02 AM

One of the problem i can see in this problem is that your textures will be down sampled when you apply 1024x1024 to a small quad which in terms means you will lose information from the big the texture when you do a glReadPixel.


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