Irregular sampling of an image using OpenGL -


How do I want to sample an image using OpenGL in a list of specific points? Tutorials similar to the problem below or for example a link?

At this time we have a code that calculates the 'output intensity' in the list of specific locations x1, y1, x2, y2, ..., xn, yn Apply a Lanzos2 filter to an input image. At present, the quantity of places is 20 (which is actually a list of phosphene locations in a visual artificial limb), but it will eventually increase to 256 and the GPU process will definitely speed things up.

So far I have seen how an average filter can be applied equally, but in my case there is no need to calculate the convolution with the filter kernel on each image, specifying the pixels Just places.

Sample this value (on the other side) or not.

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