slang-shaders/xbr/shaders/xbr-mlv4-multipass/xbr-mlv4-pass3.slang

250 lines
7 KiB
Plaintext

#version 450
/*
Hyllian's xBR MultiLevel4 Shader - Pass3
Copyright (C) 2011-2015 Hyllian - sergiogdb@gmail.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
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 round(X) floor((X)+0.5)
#define saturate(c) clamp(c, 0.0, 1.0)
#define mul(a,b) (b*a)
const float coef = 2.0;
const float cf = 4.0;
const float eq_threshold = 15.0;
const float y_weight = 48.0;
const float u_weight = 7.0;
const float v_weight = 6.0;
const mat3 yuv = mat3(0.299, 0.587, 0.114, -0.169, -0.331, 0.499, 0.499, -0.418, -0.0813);
const mat3 yuv_weighted = mat3(y_weight*yuv[0], u_weight*yuv[1], v_weight*yuv[2]);
const vec4 maximo = vec4(255.0, 255.0, 255.0, 255.0);
const vec4 low = vec4(-64.0, -64.0, -64.0, -64.0);
const vec4 high = vec4( 64.0, 64.0, 64.0, 64.0);
const mat2x4 sym_vectors = mat2x4(1., 1., -1., -1., 1., -1., -1., 1.);
// Bx, Ay, C
const vec3 lines[13] = {
vec3(4.0, 4.0, 4.0), // 0 NL
vec3(4.0, 4.0, 3.0), // 1 LV0
vec3(4.0, 4.0, 2.0), // 2 LV1
vec3(8.0, 4.0, 2.0), // 3 LV2u
vec3(4.0, 8.0, 2.0), // 4 LV2l
vec3(12.0, 4.0, 2.0), // 5 LV3u
vec3(4.0,12.0, 2.0), // 6 LV3l
vec3(16.0, 4.0, 2.0), // 7 LV4u
vec3(4.0,16.0, 2.0), // 8 LV4l
vec3(12.0, 4.0, 6.0), // 9 LV3u
vec3(4.0,12.0, 6.0), // 10 LV3l
vec3(16.0, 4.0, 6.0), // 11 LV4u
vec3(4.0,16.0, 6.0) // 12 LV4l
};
vec4 remapTo01(vec4 v, vec4 low, vec4 high)
{
return saturate((v - low)/(high-low));
}
float remapFrom01(float v, float high)
{
return round(high*v);
}
float df(float A, float B)
{
return abs(A-B);
}
bool eq(float A, float B)
{
return (df(A, B) < eq_threshold);
}
float weighted_distance(float a, float b, float c, float d, float e, float f, float g, float h)
{
return (df(a,b) + df(a,c) + df(d,e) + df(d,f) + 4.0*df(g,h));
}
#pragma stage vertex
layout(location = 0) in vec4 Position;
layout(location = 1) in vec2 TexCoord;
layout(location = 0) out vec2 vTexCoord;
layout(location = 1) out vec4 t1;
void main()
{
gl_Position = global.MVP * Position;
vTexCoord = TexCoord * 1.0004;
float dx = params.OriginalSize.z;
float dy = params.OriginalSize.w;
// A3 B3 C3
// A1 B1 C1
//A2 A0 A B C C4 C6
//D2 D0 D E F F4 F6
//G2 G0 G H I I4 I6
// G5 H5 I5
// G7 H7 I7
t1 = vec4(dx, 0., 0., dy); // F H
}
#pragma stage fragment
layout(location = 0) in vec2 vTexCoord;
layout(location = 1) in vec4 t1;
layout(location = 0) out vec4 FragColor;
layout(set = 0, binding = 2) uniform sampler2D Source;
layout(set = 0, binding = 3) uniform sampler2D Original;
void main()
{
float px;
vec2 pos = fract(vTexCoord.xy * params.OriginalSize.xy) - vec2(0.4999, 0.4999); // pos = pixel position
vec2 dir = sign(pos); // dir = pixel direction
vec2 g1 = dir * ( saturate(-dir.y*dir.x) * t1.zw + saturate( dir.y*dir.x) * t1.xy );
vec2 g2 = dir * ( saturate( dir.y*dir.x) * t1.zw + saturate(-dir.y*dir.x) * t1.xy );
vec3 E = texture(Original, vTexCoord ).rgb;
vec3 F = texture(Original, vTexCoord + g1).rgb;
vec3 H = texture(Original, vTexCoord + g2).rgb;
vec3 I = texture(Original, vTexCoord + g1 + g2).rgb;
vec3 F4 = texture(Original, vTexCoord + 2.0 * g1).rgb;
vec3 H5 = texture(Original, vTexCoord + 2.0 * g2).rgb;
float e = dot(E, yuv_weighted[0]);
float f = dot(F, yuv_weighted[0]);
float h = dot(H, yuv_weighted[0]);
float i = dot(I, yuv_weighted[0]);
float f4 = dot(F4, yuv_weighted[0]);
float h5 = dot(H5, yuv_weighted[0]);
vec4 icomp = round(saturate(mul(dir, sym_vectors))); // choose info component
float infoE = remapFrom01(dot(texture(Source, vTexCoord ), icomp), 255.0); // retrieve 1st pass info
float infoF = remapFrom01(dot(texture(Source, vTexCoord+g1), icomp), 255.0); // 1st pass info from neighbor r
float infoH = remapFrom01(dot(texture(Source, vTexCoord+g2), icomp), 255.0); // 1st pass info from neighbor d
vec4 lparam;
vec2 addr;
if (infoF == 8.0)
{
lparam.xyz = lines[12];
px = float(df(f,f4) <= df(f,i));
addr.x = 2. * px + saturate(1.0 - px);
addr.y = saturate(1.0 - px);
}
else if (infoH == 7.0)
{
lparam.xyz = lines[11];
px = float(df(h,h5) <= df(h,i));
addr.x = saturate(1.0 - px);
addr.y = 2. * px + saturate(1.0 - px);
}
else if (infoF == 6.0)
{
lparam.xyz = lines[10];
px = float(df(f,f4) <= df(f,i));
addr.x = 2. * px + saturate(1.0 - px);
addr.y = saturate(1.0 - px);
}
else if (infoH == 5.0)
{
lparam.xyz = lines[9];
px = float(df(h,h5) <= df(h,i));
addr.x = saturate(1.0 - px);
addr.y = 2. * px + saturate(1.0 - px);
}
else
{
px = float(df(e,f) <= df(e,h));
addr.x = px;
addr.y = saturate(1.0 - px);
/*
lparam.xyz = ((infoE == 1.0) ? lines[1] : lines[0]);
lparam.xyz = ((infoE == 2.0) ? lines[2] : lparam.xyz);
lparam.xyz = ((infoE == 3.0) ? lines[3] : lparam.xyz);
lparam.xyz = ((infoE == 4.0) ? lines[4] : lparam.xyz);
lparam.xyz = ((infoE == 5.0) ? lines[5] : lparam.xyz);
lparam.xyz = ((infoE == 6.0) ? lines[6] : lparam.xyz);
lparam.xyz = ((infoE == 7.0) ? lines[7] : lparam.xyz);
lparam.xyz = ((infoE == 8.0) ? lines[8] : lparam.xyz);
*/
lparam.xyz = (infoE == 8.0) ? lines[8] : ((infoE == 7.0) ? lines[7] : ((infoE == 6.0) ? lines[6] : ((infoE == 5.0) ? lines[5] : ((infoE == 4.0) ? lines[4] : ((infoE == 3.0) ? lines[3] : ((infoE == 2.0) ? lines[2] : ((infoE == 1.0) ? lines[1] : lines[0])))))));
}
bool inv = (dir.x*dir.y) < 0.0 ? true : false;
// Rotate address from relative to absolute.
addr = addr * dir.yx;
addr = inv ? addr.yx : addr;
// Rotate straight line equation from relative to absolute.
lparam.xy = lparam.xy * dir.yx;
lparam.xy = inv ? lparam.yx : lparam.xy;
addr.x += 2.0;
addr.y += 2.0;
lparam.w = addr.x * 8.0 + addr.y;
FragColor = vec4(remapTo01(lparam, low, high));
}
/*
19 1
9 1
4 0
2 0
1 1
0 0
0 0000 ND
1 0001 EDR0
2 0010 EDR
3 0011 EDRU
4 0100 EDRL
5 0101 EDRU3
6 0110 EDRL3
0 1 2 3 4
-2 -1 0 1 2
*/