#ifdef GL_ES precision mediump float; #endif attribute vec2 a_pos; attribute float a_own; uniform vec3 u_planet_colours[$PLANETS * 2]; uniform vec4 u_viewbox; // [x, y, width, height] uniform vec2 u_resolution; varying vec2 v_pos; varying vec3 v_color; void main() { int own = int(a_own); vec2 uv = a_pos; // Viewbox's center is top left, a_position's is in the center to the screen // So translate and scale the viewbox** uv -= u_viewbox.xy + (u_viewbox.zw * 0.5); uv /= u_viewbox.zw * 0.5; v_pos = (uv.xy + 1.0) * 0.5; if (own < 0) { v_color = vec3(0., 0., 0.); } else { v_color = u_planet_colours[own * 2]; } gl_Position = vec4(uv.xy, 0.0, 1.0); }