Color Space Issue with Textures in Three.js

The color distortion you're experiencing is likely related to color space handling in Three.js. When textures appear brighter and more saturated than expected, it's typically because of a mismatch between the texture's color space and the renderer's output color space.

The Problem

By default, Three.js uses THREE.SRGBColorSpace for the renderer's output color space. This means that if your textures are in linear color space but being displayed in sRGB space, they will appear brighter and more saturated.

Solution

You need to ensure your texture's color space matches the renderer's expectations. Here are two approaches:

Option 1: Set the texture's color space

When loading your texture, set its color space explicitly:

JAVASCRIPTCopied
// After loading your texture
texture.colorSpace = THREE.SRGBColorSpace; // or THREE.LinearSRGBColorSpace depending on your needs

Option 2: Adjust the renderer's output color space

Alternatively, you can change the renderer's output color space:

JAVASCRIPTCopied
renderer.outputColorSpace = THREE.LinearSRGBColorSpace; // If your textures are in linear space

Example Implementation

Here's how you might implement the first option when loading a texture:

JAVASCRIPTCopied
const textureLoader = new THREE.TextureLoader();
textureLoader.load('path/to/your/texture.png', function(texture) {
    texture.colorSpace = THREE.SRGBColorSpace;
    texture.needsUpdate = true;
    
    // Use the texture in your material
    const material = new THREE.MeshBasicMaterial({ map: texture });
    // ...
});

For Procedurally Generated Textures

If you're creating textures programmatically (like with your shader), make sure to set the color space appropriately:

JAVASCRIPTCopied
// For a DataTexture example
const texture = new THREE.DataTexture(data, width, height);
texture.colorSpace = THREE.SRGBColorSpace;
texture.needsUpdate = true;

This should help resolve the color distortion issue you're experiencing with your textures.