OpenGL 4 Shading Language Cookbook - Third Edition

Getting ready

For this recipe, we'll assume that you've already compiled two shader objects whose handles are stored in the vertShader and fragShader variables.

For this and a few other recipes in this chapter, we'll use the following source code for the fragment shader:

#version 460 
 
in vec3 Color; 
out vec4 FragColor; 
 
void main() { 
  FragColor = vec4(Color, 1.0); 
} 

For the vertex shader, we'll use the source code from the previous recipe, Compiling a shader.