chess - online multiplayer chess game (note server currently down)


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shader_type canvas_item;
uniform float saturation: hint_range(0.0, 1.0) = 0.0;
uniform float scale: hint_range(0.0, 1.0) = 1.0;
const float pivot = 0.5;

void fragment() {
	vec4 tex_color = texture(TEXTURE, (UV - pivot) * (2.0 - scale) + pivot);
	COLOR.rgb = mix(vec3(dot(tex_color.rgb, vec3(0.299, 0.587, 0.114))), tex_color.rgb, saturation); // magic numbers
	COLOR.a = tex_color.a;
}