Zombie flash

assets/shaders/CG_color_blender.gdshader

@@ -0,0 +1,16 @@
+shader_type canvas_item;
+render_mode unshaded;
+
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+uniform vec4 blend_color : source_color;
+uniform float amount : hint_range(0,1,0.01);
+
+void fragment() {
+	vec4 c = textureLod(screen_texture, SCREEN_UV, 0.0);
+
+	if (c.a > 0.0001) {
+		c.rgb /= c.a;
+	}
+
+	COLOR *= mix(c,blend_color * c.a,amount);
+}