011-helloworld.glsl

#ifdef GL_ES
precision mediump float;
#endif



// intro to the course
// intro to the book of shaders, to the graphic pipelines and to fragment shaders
// how to change color? how is color represented?

// explain the main function
void main(){
    gl_FragColor=vec4(1.0, 0.0, 0.0, 1.0);
}