#version 330 precision highp float; in vec4 scale_obuid; out vec4 color; void main(void) { highp int obuid = int(scale_obuid.w); float r = ((obuid>>0 )&0xff)*(1./255.f); float g = ((obuid>>8 )&0xff)*(1./255.f); float b = ((obuid>>16)&0xff)*(1./255.f); float a = ((obuid>>24)&0xff)*(1./255.f); color = vec4(r,g,b,a); }