#version 450

vec2 positions[3] = vec2[]
(
    vec2( 0.0, -0.5),
    vec2( 0.5, 0.5),
    vec2(-0.5, 0.5)
);

vec3 colors[3] = vec3[]
(
    vec3(1.0, 0.0, 0.0),
    vec3(0.0, 1.0, 0.0),
    vec3(0.0, 0.0, 1.0)
);

layout(location = 0) out vec4 outColor;

void main()
{
    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
    outColor = vec4(colors[gl_VertexIndex], 1.0);
}