Question 1

How do I use fragment shaders in a Three.js project?

Accepted Answer

This lesson doesn't cover Three.js integration; you'll need to adapt the GLSL code to Three.js materials, which involve different uniforms and setup compared to Shadertoy.

Question 2

What's the difference between vertex and fragment shaders?

Accepted Answer

Vertex shaders handle geometry placement in 2D/3D space, while fragment shaders compute pixel colors. This lesson focuses only on fragment shaders, so it's a partial introduction.

Question 3

Can I export Shadertoy shaders to my own WebGL app?

Accepted Answer

Yes, but you'll need to adjust the code for your WebGL context, as Shadertoy uses specific uniforms like iChannel0 and iResolution that aren't standard in custom implementations.

Question 4

How can I optimize my fragment shaders for better performance?

Accepted Answer

This lesson doesn't cover optimization; for production, consider techniques like reducing texture samples, using lower precision floats, or minimizing per-pixel calculations.

Question 5

Shadertoy or writing shaders from scratch – which is better for learning?

Accepted Answer

Shadertoy is excellent for quick experimentation and visualization, but writing shaders from scratch in a WebGL context gives a deeper understanding of the graphics pipeline and integration.

WebGL Lessons — Fragment Shaders

What is WebGL Lessons — Fragment Shaders?

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