Shaders are the most important topic we’ll discuss today!

• They
  • power the GPU
  • control how rendering is done in your application
• Shaders in WebGL
  • we’ll use the OpenGL ES Shading Language (commonly called GLSL ES)
  • two shaders available in the pipeline:
    • vertex shaders, which handle geometric objects
    • fragment shaders, which generate colors

in vec4 aPosition;

void main() {
    gl_Position = aPosition;
}