JustusPan · August 15, 2020 07:04 · Aug 15, 2020
diff --git a/Uni2D.shader b/Uni2D.shader
@@ -0,0 +1,27 @@
+shader_type canvas_item;
+
+uniform bool use_pallete;
+uniform sampler2D pallete_texture;
+uniform vec4 tint_color : hint_color = vec4(1.0);
+uniform float tint_factor : hint_range(0, 1);
+
+const float from_u = 0.25;
+const float to_u = 0.75;
+const float pal_size = 16f;
+const float threshold = 0.001;
+
+void fragment() {
+	vec4 source_color = texture(TEXTURE , UV.xy);
+	vec3 final_color = source_color.rgb;
+
+	if (use_pallete){
+		for (float i = 0f; i < pal_size; i++) {
+			vec4 from_color = texture(pallete_texture , vec2(from_u, i/pal_size));
+			vec4 to_color = texture(pallete_texture , vec2(to_u, i/pal_size));
+			if(abs(length(source_color.rgb - from_color.rgb)) < threshold) final_color = to_color.rgb;
+		}
+	}
+
+	COLOR.rgb = mix(final_color, tint_color.rgb, tint_factor);
+	COLOR.a = source_color.a;
+}