Chromatic Aberration Vignette
I couldn’t find anything like this anywhere on the internet, so I had to do it myself!
Shader code
// Big thanks to both jecovier and axilirate, who's shaders I built upon
shader_type canvas_item;
uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmap;
uniform vec2 r_displacement = vec2(3.0, 0.0);
uniform vec2 g_displacement = vec2(0.0, 0.0);
uniform vec2 b_displacement = vec2(-3.0, 0.0);
uniform float height: hint_range(0.0, 1.0, 0.1) = 0.7;
uniform float width: hint_range(0.0, 1.0, 0.1) = 0.5;
uniform float fade = 0.7;
void fragment()
{
float shrink_width = 2.0 / width;
float shrink_height = 2.0 / height;
float dist = distance(vec2(UV.x * shrink_width, UV.y * shrink_height), vec2(0.5 * shrink_width, 0.5 * shrink_height));
float r = texture(SCREEN_TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE*r_displacement), 0.0).r;
float g = texture(SCREEN_TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE*g_displacement), 0.0).g;
float b = texture(SCREEN_TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE*b_displacement), 0.0).b;
COLOR = vec4(r, g, b, dist - fade);
}
