Function generateShaderTemplate

generateShaderTemplate(
    uniforms: {
        type: "float" | "vec2" | "vec3" | "vec4" | "sampler2D";
        name: string;
        defaultValue: string | number | number[];
    }[],
    body: string,
): string
Generate a minimal custom shader template.
Parameters
- uniforms: {
      type: "float" | "vec2" | "vec3" | "vec4" | "sampler2D";
      name: string;
      defaultValue: string | number | number[];
  }[]
  Array of {type, name, default} for custom uniforms.
- body: string
  Main function body (will be placed inside void main() { ... }). Use uv for texture coordinates and screenTexture for the screen.
Returns string
Complete GLSL fragment shader string.
Example
```
const shader = generateShaderTemplate(
  [{ type: 'float', name: 'factor', defaultValue: 0.5 }],
  'gl_FragColor = mix(texture2D(screenTexture, uv), vec4(1.0, 0.0, 0.0, 1.0), factor);'
);
```
- Defined in extra.ts:1306