scene_ambient[0] = white[0] * ambient;
scene_ambient[1] = white[1] * ambient;
scene_ambient[2] = white[2] * ambient;
+ scene_ambient[3] = 1.0;
scene_diffuse[0] = white[0] * diffuse;
scene_diffuse[1] = white[1] * diffuse;
scene_diffuse[2] = white[2] * diffuse;
+ scene_diffuse[3] = 1.0;
// set sky color
sky_color[0] = base_sky_color[0] * sky_brightness;