23 lines
604 B
Plaintext
23 lines
604 B
Plaintext
shader_type canvas_item;
|
|
|
|
uniform float corruption_x = 0.0;
|
|
uniform float edge_width = 50.0;
|
|
uniform mat4 screen_to_world;
|
|
|
|
uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_nearest_mipmap;
|
|
|
|
void fragment() {
|
|
vec4 screen_color = texture(SCREEN_TEXTURE, SCREEN_UV);
|
|
|
|
float gray = dot(screen_color.rgb, vec3(0.299, 0.587, 0.114));
|
|
vec3 bw = vec3(gray);
|
|
|
|
vec4 world_pos = screen_to_world * vec4(FRAGCOORD.xy, 0.0, 1.0);
|
|
|
|
float dist = world_pos.x - corruption_x;
|
|
float t = smoothstep(-edge_width, edge_width, dist);
|
|
|
|
COLOR.rgb = mix(bw, screen_color.rgb, t);
|
|
COLOR.a = screen_color.a;
|
|
}
|