Function initCustomShader

examples/src/buffer-mesh-instance.ts:142–174

* Create custom instance shader.

()

 * Create custom instance shader.
 */
function initCustomShader(): Shader {
  const shader = Shader.create(
    "CustomShader",
    `uniform mat4 renderer_MVPMat;
      attribute vec4 POSITION;
      attribute vec3 INSTANCE_OFFSET;
      attribute vec3 INSTANCE_COLOR;
      
      uniform mat4 renderer_MVMat;
      
      varying vec3 v_position;
      varying vec3 v_color;
      
      void main() {
        vec4 position = POSITION;
        position.xyz += INSTANCE_OFFSET;
        gl_Position = renderer_MVPMat * position;

        v_color = INSTANCE_COLOR;
      }`,

    `
      varying vec3 v_color;
      uniform vec4 u_color;
      
      void main() {
        vec4 color = vec4(v_color,1.0);
        gl_FragColor = color;
      }
      `
  );
  return shader;
}