alex47 / dual-kawase-blur

Qt implementation of Dual Kawase Blur using OpenGL

Dual Kawase Blur

OpenGL implementation of blurring images using Dual Kawase blur method

Download executable: https://github.com/alex47/Dual-Kawase-Blur/releases/latest

dual-kawase-blur's Issues

Cant compile shaders

When i try to run the software and apply the blur i get this error

QOpenGLShader::compile(Fragment): 0:1(10): error: GLSL 3.30 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.00 ES, 3.00 ES, 3.10 ES, and 3.20 ES

And even changing to #version 320 es i get this error

QOpenGLShader::compile(Fragment): 0:3(12): warning: extension GL_ARB_fragment_coord_conventions' unsupported in fragment shader 0:1(1): error: No precision specified in this scope for type vec4'
0:2(1): error: No precision specified in this scope for type vec4' 0:5(1): error: No precision specified in this scope for type vec2'
0:6(1): error: No precision specified in this scope for type vec2' 0:7(1): error: No precision specified in this scope for type vec2'
0:11(2): error: No precision specified in this scope for type vec2' 0:13(2): error: No precision specified in this scope for type vec4'

how did you manage to run it?

Question

Question still is how use the offset in the iteration to the image really blurry?

Could not understand from code :/

Parts of source going everywhere excepted in one rectangle

Hi, I tried this project when I was on Qt 5.7.x and 5.9.x. Now I'm using Qt 5.15.x and it seems that in the newer version there's an issue with the shaders/fragments. I'm using OpenGL 4.6. When I use any image, I get a bottom left square well rendered. But otherwise, all the image is a mix of some little parts of the image or there's simply nothing, you can take a look at the images I attached. I'm trying to use OpenGL with Qt, so I'm new and don't see from where it could come from. I tried 1.0, 1.1 and master, all does the same result, just that 1.0 (seems to) make(s) something with more frags than the 1.1...

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