| #version 430 | |
| layout(location = 0) in vec4 in_position; | |
| layout(location = 1) in vec4 in_color; | |
| layout(location = 2) in int in_refVertexIndex; | |
| layout(location = 0) out vec4 out_color; | |
| out gl_PerVertex { | |
| vec4 gl_Position; | |
| }; | |
| void main() { | |
| gl_Position = in_position; | |
| if (gl_VertexIndex == in_refVertexIndex) | |
| out_color = in_color; | |
| else | |
| out_color = vec4(1.0, 0.0, 0.0, 1.0); | |
| } |