GLSL - one-pass gaussian blur

Posted by martin pilch on Game Development See other posts from Game Development or by martin pilch
Published on 2012-04-02T19:19:07Z Indexed on 2012/04/03 5:41 UTC
Read the original article Hit count: 1178

Filed under:

glsl

It is possible to implement fragment shader to do one-pass gaussian blur? I have found lot of implementation of two-pass blur (gaussian and box blur):

and so on.

I have been thinking of implementing gaussian blur as convolution (in fact, it is the convolution, the examples above are just aproximations):

http://en.wikipedia.org/wiki/Gaussian_blur

Related posts about glsl

How to debug a GLSL shader ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to debug a GLSL program but I don't know how to output intermediate result. Is it possible to make some debug traces (like with printf) with GLSL ? >>> More
How to update a uniform variable in GLSL

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I am trying to get update the eye position in my shader from my appliaction but I keep getting error 1281 when I attempt this. I have no problems after the initialization just when i subsequently try to update the values. Here is my code: void GraphicsObject::SendShadersDDS(char vertFile… >>> More
GLSL check if fragment is on geometry

as seen on Stack Overflow - Search for 'Stack Overflow'
I am currently writing the positions of my geometry to the RGB channels of gl_FragColor and I would like to write 1.0 to the alpha channel if the fragment is part of geometry, and 0.0 if its empty. Is there a simple way to tell if a fragment is geometry or not? Maybe through gl_FragCoord.z? thanks >>> More
Implementing your own depth buffer with GLSL

as seen on Stack Overflow - Search for 'Stack Overflow'
I need a datastructure of the same size as the normal depth buffer and I need to be able to read from and write to it in a shader. Is this possible, and what does this datastructure look like? >>> More
Passing multiple Vertex Attributes in GLSL 130

as seen on Game Development - Search for 'Game Development'
(note this question is closely related to this one however I didn't fully understand the accepted answer) To support videocards in laptops I have to rewrite my GLSL 330 shaders to GLSL 130. I'm trying to do this but somehow I don't get vertex attributes to work properly. My 330 shaders look like… >>> More

Developer IT

GLSL - one-pass gaussian blur - Developer IT

GLSL - one-pass gaussian blur

glsl

Related posts about glsl

How to debug a GLSL shader ?

How to update a uniform variable in GLSL

GLSL check if fragment is on geometry

Implementing your own depth buffer with GLSL

Passing multiple Vertex Attributes in GLSL 130

Categories cloud