mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-10-17 23:31:31 +11:00
93 lines
2.3 KiB
Plaintext
93 lines
2.3 KiB
Plaintext
#version 450
|
|
|
|
/*
|
|
Merge Dithering and Pseudo Transparency Shader v2.8 - Pass 3
|
|
by Sp00kyFox, 2014
|
|
|
|
Backpropagation and checkerboard smoothing.
|
|
|
|
*/
|
|
|
|
layout(push_constant) uniform Push
|
|
{
|
|
vec4 SourceSize;
|
|
vec4 OriginalSize;
|
|
vec4 OutputSize;
|
|
uint FrameCount;
|
|
} params;
|
|
|
|
layout(std140, set = 0, binding = 0) uniform UBO
|
|
{
|
|
mat4 MVP;
|
|
} global;
|
|
|
|
#define TEX(dx,dy) texture(Source, vTexCoord+vec2((dx),(dy))*params.SourceSize.zw)
|
|
#define TEXt0(dx,dy) texture(Original, vTexCoord+vec2((dx),(dy))*params.SourceSize.zw)
|
|
|
|
bool eq(vec3 A, vec3 B){
|
|
return (A == B);
|
|
}
|
|
|
|
float and_(float a, float b){
|
|
return min(a,b);
|
|
}
|
|
|
|
float or_(float a, float b, float c, float d, float e, float f, float g, float h, float i){
|
|
return max(a, max(b, max(c, max(d, max(e, max(f, max(g, max(h,i))))))));
|
|
}
|
|
|
|
vec2 and_(vec2 a, vec2 b){
|
|
return min(a,b);
|
|
}
|
|
|
|
vec2 or_(vec2 a, vec2 b){
|
|
return max(a,b);
|
|
}
|
|
|
|
vec2 or_(vec2 a, vec2 b, vec2 c, vec2 d){
|
|
return max(a, max(b, max(c,d)));
|
|
}
|
|
|
|
#pragma stage vertex
|
|
layout(location = 0) in vec4 Position;
|
|
layout(location = 1) in vec2 TexCoord;
|
|
layout(location = 0) out vec2 vTexCoord;
|
|
|
|
void main()
|
|
{
|
|
gl_Position = global.MVP * Position;
|
|
vTexCoord = TexCoord;
|
|
}
|
|
|
|
#pragma stage fragment
|
|
layout(location = 0) in vec2 vTexCoord;
|
|
layout(location = 0) out vec4 FragColor;
|
|
layout(set = 0, binding = 2) uniform sampler2D Source;
|
|
layout(set = 0, binding = 3) uniform sampler2D Original;
|
|
|
|
void main()
|
|
{
|
|
/*
|
|
UL U UR
|
|
L C R
|
|
DL D DR
|
|
*/
|
|
|
|
vec4 C = TEX( 0., 0.); vec3 c = TEXt0( 0., 0.).xyz;
|
|
vec2 L = TEX(-1., 0.).xy; vec3 l = TEXt0(-1., 0.).xyz;
|
|
vec2 R = TEX( 1., 0.).xy; vec3 r = TEXt0( 1., 0.).xyz;
|
|
vec2 U = TEX( 0.,-1.).xy; vec3 u = TEXt0( 0.,-1.).xyz;
|
|
vec2 D = TEX( 0., 1.).xy; vec3 d = TEXt0( 0., 1.).xyz;
|
|
float UL = TEX(-1.,-1.).y; vec3 ul = TEXt0(-1.,-1.).xyz;
|
|
float UR = TEX( 1.,-1.).y; vec3 ur = TEXt0( 1.,-1.).xyz;
|
|
float DL = TEX(-1., 1.).y; vec3 dl = TEXt0(-1., 1.).xyz;
|
|
float DR = TEX( 1., 1.).y; vec3 dr = TEXt0( 1., 1.).xyz;
|
|
|
|
// Backpropagation
|
|
C.xy = or_(C.xy, and_(C.zw, or_(L, R, U, D)));
|
|
|
|
// Checkerboard Smoothing
|
|
C.y = or_(C.y, min(U.y, float(eq(c,u))), min(D.y, float(eq(c,d))), min(L.y, float(eq(c,l))), min(R.y, float(eq(c,r))), min(UL, float(eq(c,ul))), min(UR, float(eq(c,ur))), min(DL, float(eq(c,dl))), min(DR, float(eq(c,dr))));
|
|
|
|
FragColor = vec4(C);
|
|
} |