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13 votes
1 answer
4k views

How to do color post processing in WebGL, when you can not read the color of the current pixel?

In a WebGL 2 GLSL fragment shader, one can not access the pre-existing color value of the current pixel, i.e. the color that is already there in the framebuffer before the pixel that is currently ...
Anders's user avatar
  • 243
0 votes
1 answer
135 views

Relocate texture regions with pixel shader

I'm new to DirectX and pixel shader development. I want to know how to relocate region of input image in post processing. What I want to achieve is to divide my image into 4 pieces and then relocate ...
Mary Jane's user avatar
-1 votes
1 answer
200 views

Post Processing without using FBOs?

Recently, I've been making a 3D game (hint my questions), and I recently have modified a pixelization shader from a unity shader graph tutorial. The thing is, I want to render the shader on the WHOLE ...
Pale_Gray's user avatar
3 votes
1 answer
15k views

Pixelation shader explanation?

I was looking for a pixelation shader for my postprocessing and came across this shader snippet - Works pretty well! - Not a whole lot of explanations on how it works except for "Pixelation is process ...
vexe's user avatar
  • 342
3 votes
2 answers
5k views

Fast fullscreen quad rendering in Direct3D 11?

For the last few weeks, I've been trying to port a DX9 implementation of HDR rendering (tone mapping, bloom, stars, etc.) over to DX11. I believe I've got all features working but I'm not getting good ...
Richard Copperwaite's user avatar