Comments on: Gaussian Blur Filter Shader

By: Ceausescu n-a murit

Ceausescu n-a murit — Tue, 07 Feb 2012 13:10:53 +0000

RTBlurH? ussless article. incomplte!

By: Arely Kamps

Arely Kamps — Sun, 15 Jan 2012 11:58:30 +0000

I am so grateful for your blog post.Much thanks again. Cool.

By: ND2D – Blur - nulldesign // lars gerckens

ND2D – Blur - nulldesign // lars gerckens — Wed, 07 Dec 2011 13:53:38 +0000

[...] take the result and blur it vertically. This way, you have to take only 9 + 9 = 18 samples (see Article: Gaussian Blur Shader). Implementing it this way, means we have to do a horizontal blur, write the output to a texture [...]

By: Chris

Chris — Thu, 24 Nov 2011 14:41:10 +0000

What happens at the borders when texture2D is trying to read pixels outside the image? For example when vTexCoord.x is 0 and you call texture2D to access pixels at vTexCoord.x – 4 * blursize? What is the texture2D return value in this case and how does it contribute to the filter kernel?