#version 300 es layout(location = 0) in vec2 a_position; layout(location = 1) in vec2 i_position; layout(location = 2) in vec4 i_color; struct Instant { vec2 position; vec4 color; }; out Instant i_instant; void main() { i_instant.position = i_position; i_instant.color = i_color; gl_Position = vec4(a_position, 0.0, 1.0); }