All Questions
Tagged with gaussianblur opengl
7
questions
0
votes
1
answer
319
views
How can I use texelFetch() to get elements in a sampler1D texture?
I stored a 1D Gaussian filter in a sampler1D texture and send it to a fragment shader. When doing the vertical and horizontal blur, I use texelFetch() to get the weights in samlper1D map but didn't ...
- 1
1
vote
1
answer
705
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How to add alpha value in blur shader
In the following blur shader currently the output image has alpha value of 1.0 , but i want the alpha to be dependent on the blur of the image.
The shader code has been taken from the following ...
- 2,210
0
votes
1
answer
269
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Unexpected result (first pass disappeared) when doing two-pass Gaussian blur in OpenGL(C++)
I'm trying to implement a background-blur effect with OpenGL.
Here is my thought:
drawing all background element to colorFBO
draw colorFBO into pingpongFBO[0] and pingpongFBO1
use pingpongFBO[0] as ...
- 79
2
votes
2
answers
2k
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Blur kernel separation for two pass rendering
It is necessary for me to calculate the kernel for two-pass blur. Suppose there is a blur kernel 5x5, which is generated as follows:
public static float[][] getKernelf(int size, float sigma) {
...
- 988
1
vote
1
answer
2k
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GLSL - Gaussian Blur Artifact Issue
First of all, due to requirements constraints, I am working in OpenGL v. 2.1, and GLSL 120. I have implemented a simple fragment shader that applies a two pass (horizontal & vertical) Gaussian ...
- 495
1
vote
1
answer
595
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Gaussian Blur never works correctly
For some reason every time that I do blur it turns out like this, and I really confused as to why that is. For bloom as well, the blurring was all pixelated and still is as every time I do blur this ...
- 97
1
vote
0
answers
382
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Gaussian blur on a single object
I have implemented a simple gaussian blur and combined it with deferred shading, and it works. When I'm trying to add another object to the scene the object is also affected by the blur, which is not ...
- 119