I've been attempting to code a normal Gaussian Blur shader which scales the image down to half the size in the vertex shader. The scaling works, but when I attempted to code the gaussian blur my...

When I use i as the offset and then multiply by

vec2 pixel_size = vec2(0.5 / tex_size.x, 0.5 / tex_size.y);

Would this make any difference?

I've recently been experimenting with implementing a gaussian blur which samples half texels in attempt to retrieve the data of both texels. However I'm slightly skeptical of my results so I'm going...

I'm looking for help implementing a Texture Atlas using the programmable pipeline. Would I just use a loop and glSubTexImage, or would I have to do additional work with the pixel shader?

I'm busy following this tutorial and using OpenGL to execute it.

http://http.developer.nvidia.com/GPUGems3/gpugems3_ch27.html

I was wondering what exactly the number of samples variable in the...