old_film.tscn

[gd_scene load_steps=6 format=1]

[ext_resource path="res://sprites/filmgrain.png" type="Texture" id=1]
[ext_resource path="res://sprites/light.png" type="Texture" id=2]
[ext_resource path="res://sprites/white.png" type="Texture" id=3]

[sub_resource type="CanvasItemShader" id=1]

_code = {
"fragment": "uniform color base=color(0.5,0.5,0.5,1);
uniform texture grain;
uniform float grain_strength=0.1;
uniform texture vignette;
uniform float fps=12;
uniform float stretch = 0.5;
uniform float flashing=0.01;

vec3 c = texscreen(SCREEN_UV);

//float v = max(c.r,max(c.g,c.b));
float v = dot(c,vec3(0.2,0.1,0.7));
v=sqrt(v);
//v*=v;
float make_grain(float time) {

	vec2 ofs = vec2(sin(41*time*sin(time*123)),sin(27*time*sin(time*312)));
	return tex(grain,(UV+mod(ofs,vec2(1,1)))*stretch).r;
}

float f = 1.0/fps;
float g = make_grain(TIME-mod(TIME,f));
g=max(g,make_grain(TIME-mod(TIME,f)+f)*0.5);
g=max(g,make_grain(TIME-mod(TIME,f)+f*2.0)*0.25);


COLOR.rgb= base.rgb*v-vec3(g)*grain_strength;
//COLOR.rgb*=tex(vignette,UV).r;
float ft = TIME * 0.002;
COLOR.rgb+=vec3(sin(75*ft*sin(ft*123)))*flashing;",
"fragment_ofs": 0,
"light": "",
"light_ofs": 0,
"vertex": "",
"vertex_ofs": 0
}

[sub_resource type="CanvasItemMaterial" id=2]

shader/shader = SubResource( 1 )
shader/shading_mode = 0
shader_param/base = Color( 1, 0.976807, 0.921875, 1 )
shader_param/grain = ExtResource( 1 )
shader_param/grain_strength = 0.5
shader_param/vignette = ExtResource( 2 )
shader_param/fps = 12.0
shader_param/stretch = 0.5
shader_param/flashing = 0.015

[node name="old_film" type="TextureFrame"]

visibility/opacity = 0.2
material/material = SubResource( 2 )
anchor/right = 1
anchor/bottom = 1
focus/ignore_mouse = true
focus/stop_mouse = true
size_flags/horizontal = 2
size_flags/vertical = 2
margin/left = -53.0
margin/top = -36.0
margin/right = 53.0
margin/bottom = 36.0
texture = ExtResource( 3 )
expand = true
stretch_mode = 0