Why Does the SVG Texture from Adobe Illustrator Appear Blurry Compared to Photopea?

While your question is about SVG textures in Three.js, it appears to be more related to SVG export differences between Adobe Illustrator and Photopea rather than a specific Three.js issue. I'll try to provide some guidance based on common texture handling in Three.js.

SVG Textures in Three.js

When using SVG files as textures in Three.js, several factors can affect the final appearance:

1. SVG Rendering Process: Three.js doesn't directly render SVGs as textures. Instead, they're typically converted to bitmap images (through HTML Canvas) before being used as textures.

2. Texture Resolution: The resolution at which the SVG is rasterized can significantly impact clarity.

3. Export Settings: Different SVG export settings can produce different results.

Possible Solutions

Here are some approaches to resolve the blurry texture issue:

1. Check SVG Export Settings in Illustrator

Make sure your Illustrator export settings are optimized:

• Use "SVG 1.1" format
• Set appropriate decimal precision
• Disable unnecessary options like "Responsive"
• Try different SVG profiles (Tiny 1.1, 1.2, Basic 1.1, etc.)

2. Control the Rasterization Process

If you're converting the SVG to a texture manually:

JAVASCRIPTCopied
// Create a higher resolution canvas for better quality
const canvas = document.createElement('canvas');
canvas.width = 1024;  // Higher resolution
canvas.height = 1024; // Higher resolution
const ctx = canvas.getContext('2d');

// Load SVG as an image
const img = new Image();
img.onload = function() {
  ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
  
  // Create texture from canvas
  const texture = new THREE.CanvasTexture(canvas);
  texture.needsUpdate = true;
  
  // Apply texture to material
  material.map = texture;
  material.needsUpdate = true;
};
img.src = 'path/to/your/svg.svg';

3. Use TextureLoader with Proper Settings

When loading the texture:

JAVASCRIPTCopied
const textureLoader = new THREE.TextureLoader();
const texture = textureLoader.load('path/to/your/svg.svg');

// Improve texture quality
texture.anisotropy = renderer.capabilities.getMaxAnisotropy();
texture.minFilter = THREE.LinearFilter;
texture.magFilter = THREE.LinearFilter;

// Apply to material
material.map = texture;
material.needsUpdate = true;

4. Compare the SVG Files

Examine both SVG files in a text editor to identify differences in:

• Viewbox settings
• Path definitions
• Embedded styles
• XML structure

The Photopea version might have cleaner, more optimized SVG code that renders better when converted to a texture.

If the issue persists, you might need to either continue using the Photopea export or adjust your Illustrator export settings to match the characteristics of the Photopea output.