• Advertisement
Sign in to follow this  

Why GLSL noise only produces a black color?

This topic is 2821 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

I have a noob problem with GLSL where I can't seem to figure out why the pixel shader below only renders a black rectangle. I was expecting that it would draw a random-colored one instead. I figured the black color could result from the fact that the noise functions may return a negative value but even using abs() on them doesn't help.
#version 150

out vec4 pixel_color;

void main() {
    float r = abs(noise1(1.0));
    float g = abs(noise1(2.0));
    float b = abs(noise1(3.0));
    pixel_color = vec4(r, g, b, 1.0);
}

Share this post


Link to post
Share on other sites
Advertisement
Oh. How sad. At least that explains why it didn't work. Thanks!

Share this post


Link to post
Share on other sites
^ Great, that tutorial will be handy later on.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement