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add nedi shaders

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hunterk 2017-05-15 11:15:41 -05:00
parent cc79eebc62
commit 671c8ae251
6 changed files with 1037 additions and 0 deletions
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32
nedi/fast-bilateral-nedi.glslp Normal file
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shaders = "5"
shader0 = ../denoisers/shaders/fast-bilateral.glsl
filter_linear0 = false
scale_type_0 = source
shader1 = "shaders/nedi-pass0.glsl"
filter_linear1 = false
wrap_mode1 = "clamp_to_border"
float_framebuffer1 = "false"
scale_type_x1 = "source"
scale_x1 = "2.000000"
scale_type_y1 = "source"
scale_y1 = "1.000000"
shader2 = "shaders/nedi-pass1.glsl"
filter_linear2 = false
wrap_mode2 = "clamp_to_border"
float_framebuffer2 = "false"
scale_type_x2 = "source"
scale_x2 = "1.000000"
scale_type_y2 = "source"
scale_y2 = "2.000000"
shader3 = "shaders/nedi-pass2.glsl"
filter_linear3 = false
wrap_mode3 = "clamp_to_border"
float_framebuffer3 = "false"
scale_type_x3 = "source"
scale_x3 = "1.000000"
scale_type_y3 = "source"
scale_y3 = "1.000000"
shader4 = "shaders/nedi-jinc.glsl"
filter_linear4 = false
wrap_mode4 = "clamp_to_border"
float_framebuffer4 = "false"

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nedi/nedi.glslp Normal file
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shaders = "4"
shader0 = "shaders/nedi-pass0.glsl"
filter_linear0 = false
wrap_mode0 = "clamp_to_border"
float_framebuffer0 = "false"
scale_type_x0 = "source"
scale_x0 = "2.000000"
scale_type_y0 = "source"
scale_y0 = "1.000000"
shader1 = "shaders/nedi-pass1.glsl"
filter_linear1 = false
wrap_mode1 = "clamp_to_border"
float_framebuffer1 = "false"
scale_type_x1 = "source"
scale_x1 = "1.000000"
scale_type_y1 = "source"
scale_y1 = "2.000000"
shader2 = "shaders/nedi-pass2.glsl"
filter_linear2 = false
wrap_mode2 = "clamp_to_border"
float_framebuffer2 = "false"
scale_type_x2 = "source"
scale_x2 = "1.000000"
scale_type_y2 = "source"
scale_y2 = "1.000000"
shader3 = "shaders/nedi-jinc.glsl"
filter_linear3 = false
wrap_mode3 = "clamp_to_border"
float_framebuffer3 = "false"

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nedi/shaders/nedi-jinc.glsl Normal file
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#version 120
/*
Hyllian's jinc windowed-jinc 2-lobe with anti-ringing Shader
Copyright (C) 2011-2016 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.
*/
/*
This is an approximation of Jinc(x)*Jinc(x*r1/r2) for x < 2.5,
where r1 and r2 are the first two zeros of jinc function.
For a jinc 2-lobe best approximation, use A=0.5 and B=0.825.
*/
// A=0.5, B=0.825 is the best jinc approximation for x<2.5. if B=1.0, it's a lanczos filter.
// Increase A to get more blur. Decrease it to get a sharper picture.
// B = 0.825 to get rid of dithering. Increase B to get a fine sharpness, though dithering returns.
// Compatibility #ifdefs needed for parameters
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
// Parameter lines go here:
#pragma parameter JINC2_WINDOW_SINC "Window Sinc Param" 0.42 0.0 1.0 0.01
#pragma parameter JINC2_SINC "Sinc Param" 0.92 0.0 1.0 0.01
#pragma parameter JINC2_AR_STRENGTH "Anti-ringing Strength" 0.8 0.0 1.0 0.1
#ifdef PARAMETER_UNIFORM
// All parameter floats need to have COMPAT_PRECISION in front of them
uniform COMPAT_PRECISION float JINC2_WINDOW_SINC;
uniform COMPAT_PRECISION float JINC2_SINC;
uniform COMPAT_PRECISION float JINC2_AR_STRENGTH;
#else
#define JINC2_WINDOW_SINC 0.42
#define JINC2_SINC 0.92
#define JINC2_AR_STRENGTH 0.8
#endif
#define saturate(c) clamp(c, 0.0, 1.0)
#define lerp(a,b,c) mix(a,b,c)
#define mul(a,b) (b*a)
#define fmod(c) mod(c)
#define frac(c) fract(c)
#define tex2D(a,b) COMPAT_TEXTURE(a,b)
#define float2 vec2
#define float3 vec3
#define float4 vec4
#define int2 ivec2
#define int3 ivec3
#define int4 ivec4
#define bool2 bvec2
#define bool3 bvec3
#define bool4 bvec4
#define float2x2 mat2x2
#define float3x3 mat3x3
#define float4x4 mat4x4
#define float4x3 mat4x3
#define halfpi 1.5707963267948966192313216916398
#define pi 3.1415926535897932384626433832795
#define wa (JINC2_WINDOW_SINC*pi)
#define wb (JINC2_SINC*pi)
const float3 Y = float3(0.299, 0.587, 0.114);
float df(float A, float B)
{
return abs(A-B);
}
// Calculates the distance between two points
float d(float2 pt1, float2 pt2)
{
float2 v = pt2 - pt1;
return sqrt(dot(v,v));
}
float3 min4(float3 a, float3 b, float3 c, float3 d)
{
return min(a, min(b, min(c, d)));
}
float3 max4(float3 a, float3 b, float3 c, float3 d)
{
return max(a, max(b, max(c, d)));
}
float4 resampler(float4 x)
{
float4 res;
res = (x==float4(0.0, 0.0, 0.0, 0.0)) ? float4(wa*wb) : sin(x*wa)*sin(x*wb)/(x*x);
return res;
}
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
vec4 _oPosition1;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
// compatibility #defines
#define vTexCoord TEX0.xy
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
gl_Position = MVPMatrix * VertexCoord;
TEX0.xy = TexCoord.xy * 1.0001;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
// compatibility #defines
#define Source Texture
#define vTexCoord TEX0.xy
#define texture(c, d) COMPAT_TEXTURE(c, d)
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
float3 color;
float4x4 weights;
float2 dx = float2(1.0, 0.0);
float2 dy = float2(0.0, 1.0);
float2 pc = vTexCoord*SourceSize.xy;
float2 tc = (floor(pc-float2(0.4999,0.4999))+float2(0.4999,0.4999));
weights[0] = resampler(float4(d(pc, tc -dx -dy), d(pc, tc -dy), d(pc, tc +dx -dy), d(pc, tc+2.0*dx -dy)));
weights[1] = resampler(float4(d(pc, tc -dx ), d(pc, tc ), d(pc, tc +dx ), d(pc, tc+2.0*dx )));
weights[2] = resampler(float4(d(pc, tc -dx +dy), d(pc, tc +dy), d(pc, tc +dx +dy), d(pc, tc+2.0*dx +dy)));
weights[3] = resampler(float4(d(pc, tc -dx+2.0*dy), d(pc, tc +2.0*dy), d(pc, tc +dx+2.0*dy), d(pc, tc+2.0*dx+2.0*dy)));
//weights[0][0] = weights[0][3] = weights[3][0] = weights[3][3] = 0.0;
dx = dx * SourceSize.zw;
dy = dy * SourceSize.zw;
tc = tc * SourceSize.zw;
// reading the texels
float3 c00 = tex2D(Source, tc -dx -dy).xyz;
float3 c10 = tex2D(Source, tc -dy).xyz;
float3 c20 = tex2D(Source, tc +dx -dy).xyz;
float3 c30 = tex2D(Source, tc+2.0*dx -dy).xyz;
float3 c01 = tex2D(Source, tc -dx ).xyz;
float3 c11 = tex2D(Source, tc ).xyz;
float3 c21 = tex2D(Source, tc +dx ).xyz;
float3 c31 = tex2D(Source, tc+2.0*dx ).xyz;
float3 c02 = tex2D(Source, tc -dx +dy).xyz;
float3 c12 = tex2D(Source, tc +dy).xyz;
float3 c22 = tex2D(Source, tc +dx +dy).xyz;
float3 c32 = tex2D(Source, tc+2.0*dx +dy).xyz;
float3 c03 = tex2D(Source, tc -dx+2.0*dy).xyz;
float3 c13 = tex2D(Source, tc +2.0*dy).xyz;
float3 c23 = tex2D(Source, tc +dx+2.0*dy).xyz;
float3 c33 = tex2D(Source, tc+2.0*dx+2.0*dy).xyz;
color = mul(weights[0], float4x3(c00, c10, c20, c30));
color+= mul(weights[1], float4x3(c01, c11, c21, c31));
color+= mul(weights[2], float4x3(c02, c12, c22, c32));
color+= mul(weights[3], float4x3(c03, c13, c23, c33));
color = color/(dot(mul(weights, float4(1.0)), float4(1.0)));
// Anti-ringing
// Get min/max samples
float3 min_sample = min4(c11, c21, c12, c22);
float3 max_sample = max4(c11, c21, c12, c22);
float3 aux = color;
color = clamp(color, min_sample, max_sample);
color = mix(aux, color, JINC2_AR_STRENGTH);
// final sum and weight normalization
FragColor = vec4(color, 1.0);
}
#endif

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#version 150
/*
NEDI Shader - pass0
// This file is a part of MPDN Extensions.
// https://github.com/zachsaw/MPDN_Extensions
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3.0 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library.
//
Sources ported from this discussion thread:
http://forum.doom9.org/showthread.php?t=170727
Ported by Hyllian - 2015.
*/
// Compatibility #ifdefs needed for parameters
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
#define saturate(c) clamp(c, 0.0, 1.0)
#define lerp(c) mix(c)
#define mul(a,b) (b*a)
#define fmod(c) mod(c)
#define frac(c) fract(c)
#define tex2D(a,b) COMPAT_TEXTURE(a,b)
#define float2 vec2
#define float3 vec3
#define float4 vec4
#define int2 ivec2
#define int3 ivec3
#define int4 ivec4
#define bool2 bvec2
#define bool3 bvec3
#define bool4 bvec4
#define float2x2 mat2x2
#define float2x3 mat2x3
#define float3x3 mat3x3
#define float4x4 mat4x4
#define float4x2 mat4x2
#define NEDI_WEIGHT 4.0
#define NEDI_N 24.0
#define NEDI_E 0.0
#define NEDI_OFFSET 0.0
#define ITERATIONS 3
#define WGT 2
#define width (SourceSize.x)
#define height (SourceSize.y)
#define px (0.49999 / (SourceSize.x))
#define py (0.49999 / (SourceSize.y))
#define offset NEDI_OFFSET
//#define offset 0.0
#define Value(xy) (tex2D(Source,tex+float2(px,py)*(xy)).rgb)//-float4(0.0,0.4999,0.4999,0.0))
#define Get(xy) (dot(Value(xy),float3(.2126, .7152, .0722))+offset)
#define Get4(xy) (float2(Get(xy+WGT*dir[0])+Get(xy+WGT*dir[1]),Get(xy+WGT*dir[2])+Get(xy+WGT*dir[3])))
#define sqr(x) (dot(x,x))
#define I (float2x2(1.,0.,0.,1.))
//Cramer's method
float2 solve(float2x2 A,float2 b)
{
return float2(determinant(float2x2(b,A[1])),determinant(float2x2(A[0],b)))/determinant(A);
}
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
vec4 _oPosition1;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
// compatibility #defines
#define vTexCoord TEX0.xy
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
gl_Position = MVPMatrix * VertexCoord;
TEX0.xy = TexCoord.xy * 1.0001;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
// compatibility #defines
#define Source Texture
#define vTexCoord TEX0.xy
#define texture(c, d) COMPAT_TEXTURE(c, d)
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
float2 tex = vTexCoord + float2(0.0, 0.25*SourceSize.w);
float4 c0 = tex2D(Source,tex);
//Skip pixels on wrong grid
if (frac(tex.x*width)<0.49999)
{
FragColor = c0;
}
else
{
/*
wind[1] wind[2]
-3
-2 dir wind[0] 2 1
-1 4 4 4 4
0 1 2 1 2
1 3 3 3 3
2 1 2
3
*/
/*
wind[1] wind[2]
-3 3 3
-2 dir wind[0]
-1 0 3 0 3 0 1
0
1 2 1 2 1 1 0
2
3 2 2
*/
//Define window and directions - original
float2 dir[4] = {{-1.,-1.},{1.,1.},{-1.,1.},{1.,-1.}};
float4x2 wind[4] = {{{-1.,-1.},{1.,1.},{-1.,1.},{1.,-1.}},{{-3.,-1.},{3.,1.},{-1.,3.},{1.,-3.}},{{-3.,1.},{3.,-1.},{1.,3.},{-1.,-3.}},{{-3.,-3.},{ 3.,3.},{-3., 3.},{3.,-3.}}};
//Initialization
float2x2 R = float2x2(0.0);
float2 r = float2(0.0);
float m[4] = {NEDI_WEIGHT, 1.0, 1.0, 1.0};
//Calculate (local) autocorrelation coefficients
for (int k = 0; k<ITERATIONS; k+= 1){
float4 y = float4(Get(wind[k][0]),Get(wind[k][1]),Get(wind[k][2]),Get(wind[k][3]));
float4x2 C = float4x2(Get4(wind[k][0]),Get4(wind[k][1]),Get4(wind[k][2]),Get4(wind[k][3]));
R += mul(transpose(C),m[k]*C);
r += mul(y,m[k]*C);
}
//Normalize
float n = NEDI_N;
R /= n; r /= n;
//Calculate a = R^-1 . r
float e = NEDI_E;
float2 a = solve(R+e*e*I,r+e*e/2.0);
//Nomalize 'a' (prevents overshoot)
a = .25 + float2(.4999,-.4999)*clamp(a[0]-a[1],-1.0,1.0);
//Calculate result
float2x3 x = float2x3(Value(dir[0])+Value(dir[1]),Value(dir[2])+Value(dir[3])) * float2x2(a,a);
float3 c = float3(x[0].xyz);
FragColor = vec4(c, 1.0);
}
}
#endif

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#version 150
/*
NEDI Shader - pass1
// This file is a part of MPDN Extensions.
// https://github.com/zachsaw/MPDN_Extensions
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3.0 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library.
//
Sources ported from this discussion thread:
http://forum.doom9.org/showthread.php?t=170727
Ported by Hyllian - 2015.
*/
#define saturate(c) clamp(c, 0.0, 1.0)
#define lerp(c) mix(c)
#define mul(a,b) (b*a)
#define fmod(c) mod(c)
#define frac(c) fract(c)
#define tex2D(a,b) COMPAT_TEXTURE(a,b)
#define float2 vec2
#define float3 vec3
#define float4 vec4
#define int2 ivec2
#define int3 ivec3
#define int4 ivec4
#define bool2 bvec2
#define bool3 bvec3
#define bool4 bvec4
#define float2x2 mat2x2
#define float2x3 mat2x3
#define float3x3 mat3x3
#define float4x4 mat4x4
#define float4x2 mat4x2
#define s0 Source
#define FIX(c) (c * 1.00001)
#define NEDI_WEIGHT2 4.0
#define NEDI_N2 24.0
#define NEDI_E2 0.0
#define NEDI_OFFSET2 0.0
#define ITERATIONS 3
#define WGT 2
#define width (SourceSize.x)
#define height (SourceSize.y)
#define px (1.0 * (SourceSize.z))
#define py (0.4999 * (SourceSize.w))
#define offset NEDI_OFFSET2
#define Value(xy) (tex2D(s0,tex+float2(px,py)*(xy)).rgb)//-float4(0,0.4999,0.4999,0))
#define Get(xy) (dot(Value(xy),float3(.2126, .7152, .0722))+offset)
#define Get4(xy) (float2(Get(xy+WGT*dir[0])+Get(xy+WGT*dir[1]),Get(xy+WGT*dir[2])+Get(xy+WGT*dir[3])))
#define sqr(x) (dot(x,x))
#define I (float2x2(1.,0.,0.,1.))
//Cramer's method
float2 solve(float2x2 A,float2 b)
{
return float2(determinant(float2x2(b,A[1])),determinant(float2x2(A[0],b)))/determinant(A);
}
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
// out variables go here as COMPAT_VARYING whatever
vec4 _oPosition1;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
// compatibility #defines
#define vTexCoord TEX0.xy
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
gl_Position = MVPMatrix * VertexCoord;
TEX0.xy = TexCoord.xy * 1.0001;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
// compatibility #defines
#define Source Texture
#define vTexCoord TEX0.xy
#define texture(c, d) COMPAT_TEXTURE(c, d)
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
float2 tex = vTexCoord;
float4 c0 = tex2D(s0,tex);
//Skip pixels on wrong grid
if ((frac(tex.x*width/2.0)<0.5)&&(frac(tex.y*height)<0.5) || (frac(tex.x*width/2.0)>0.5)&&(frac(tex.y*height)>0.5))
{
FragColor = c0;
}
else
{
//Define window and directions
float2 dir[4] = {{-1.,0.},{1.,0.},{0.,1.},{0.,-1.}};
float4x2 wind[7] = {{{-1.,0.},{1.,0.},{0.,1.},{0.,-1.}},{{-2.,-1.},{2.,1.},{-1.,2.},{1.,-2.}},{{-3.,-2.},{3.,2.},{-2.,3.},{2.,-3.}},
{{-2.,1.},{2.,-1.},{1.,2.},{-1.,-2.}},{{-3.,2.},{3.,-2.},{2.,3.},{-2.,-3.}},
{{-4.,-1.},{4.,1.},{-1.,4.},{1.,-4.}},{{-4.,1.},{4.,-1.},{1.,4.},{-1.,-4.}}};
/*
wind[1] wind[2]
-3
-2 dir wind[0] 2 1
-1 4 4 4 4
0 1 2 1 2
1 3 3 3 3
2 1 2
3
*/
/*
wind[1] wind[2]
-3 3 1
-2 dir wind[0]
-1 1 4 1 3 1 3
0
1 3 2 2 4 4 2
2
3 2 4
*/
//Initialization
float2x2 R = float2x2(0.0);
float2 r = float2(0.0);
float m[7] = {NEDI_WEIGHT2, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0};
//Calculate (local) autocorrelation coefficients
for (int k = 0; k<ITERATIONS; k+= 1){
float4 y = float4(Get(wind[k][0]),Get(wind[k][1]),Get(wind[k][2]),Get(wind[k][3]));
float4x2 C = float4x2(Get4(wind[k][0]),Get4(wind[k][1]),Get4(wind[k][2]),Get4(wind[k][3]));
R += mul(transpose(C),m[k]*C);
r += mul(y,m[k]*C);
}
//Normalize
float n = NEDI_N2;
R /= n; r /= n;
//Calculate a = R^-1 . r
float e = NEDI_E2;
float2 a = solve(R+e*e*I,r+e*e/2.0);
//Nomalize 'a' (prevents overshoot)
a = .25 + float2(.4999,-.4999)*clamp(a[0]-a[1],-1.0,1.0);
//Calculate result
float2x3 x = float2x3(Value(dir[0])+Value(dir[1]),Value(dir[2])+Value(dir[3])) * float2x2(a,a);
float3 c = float3(x[0].xyz);
FragColor = float4(c, 1.0);//+float4(0,0.49999,0.49999,0);
}
}
#endif

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nedi/shaders/nedi-pass2.glsl Normal file
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#version 150
/*
NEDI Shader - pass2
// This file is a part of MPDN Extensions.
// https://github.com/zachsaw/MPDN_Extensions
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3.0 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library.
//
Sources ported from this discussion thread:
http://forum.doom9.org/showthread.php?t=170727
Ported by Hyllian - 2015.
*/
// Compatibility #ifdefs needed for parameters
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
#define saturate(c) clamp(c, 0.0, 1.0)
#define lerp(c) mix(c)
#define mul(a,b) (b*a)
#define fmod(c) mod(c)
#define frac(c) fract(c)
#define tex2D(a,b) COMPAT_TEXTURE(a,b)
#define float2 vec2
#define float3 vec3
#define float4 vec4
#define int2 ivec2
#define int3 ivec3
#define int4 ivec4
#define bool2 bvec2
#define bool3 bvec3
#define bool4 bvec4
#define float2x2 mat2x2
#define float2x3 mat2x3
#define float3x3 mat3x3
#define float4x4 mat4x4
#define float4x2 mat4x2
#define s0 Source
#define NEDI_WEIGHT3 2.0
#define NEDI_N3 24.0
#define NEDI_E3 0.0
#define ITERATIONS 3
#define WGT NEDI_WEIGHT3
#define width (SourceSize.x)
#define height (SourceSize.y)
#define px (0.49999 * (SourceSize.z))
#define py (0.49999 * (SourceSize.w))
#define offset 0.0
#define Value(xy) (tex2D(s0,tex+float2(px,py)*(xy)).rgb)//-float4(0,0.5,0.5,0))
#define Get(xy) (dot(Value(xy),float3(0.299,0.587,0.114))+offset)
#define Get4(xy) (float2(Get(xy+WGT*dir[0])+Get(xy+WGT*dir[1]),Get(xy+WGT*dir[2])+Get(xy+WGT*dir[3])))
#define sqr(x) (dot(x,x))
#define I (float2x2(1,0,0,1))
//Cramer's method
float2 solve(float2x2 A,float2 b)
{
return float2(determinant(float2x2(b,A[1])),determinant(float2x2(A[0],b)))/determinant(A);
}
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
vec4 _oPosition1;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
// compatibility #defines
#define vTexCoord TEX0.xy
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
gl_Position = MVPMatrix * VertexCoord;
TEX0.xy = TexCoord.xy * 1.0001;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
// compatibility #defines
#define Source Texture
#define vTexCoord TEX0.xy
#define texture(c, d) COMPAT_TEXTURE(c, d)
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define OutSize vec4(OutputSize, 1.0 / OutputSize)
void main()
{
float2 tex = vTexCoord - float2(0.4999,0.4999)/SourceSize.xy;
/*
wind[1] wind[2]
-3
-2 dir wind[0] 2 1
-1 4 4 4 4
0 1 2 1 2
1 3 3 3 3
2 1 2
3
*/
/*
wind[1] wind[2]
-3 3 1
-2 dir wind[0]
-1 1 4 1 3 1 3
0
1 3 2 2 4 4 2
2
3 2 4
*/
//Define window and directions
float2 dir[4] = {{-1.,-1.},{1.,1.},{-1.,1.},{1.,-1.}};
float4x2 wind[4] = {{{-1.,-1.},{1.,1.},{-1.,1.},{1.,-1.}},{{-3.,-1.},{3.,1.},{-1.,3.},{1.,-3.}},{{-3.,1.},{3.,-1.},{1.,3.},{-1.,-3.}},{{-3.,-3.},{ 3.,3.},{-3., 3.},{3.,-3.}}};
//Initialization
float2x2 R = float2x2(0.0);
float2 r = float2(0.0);
//Calculate (local) autocorrelation coefficients
for (int k = 0; k<ITERATIONS; k+= 1){
float4 y = float4(Get(wind[k][0]),Get(wind[k][1]),Get(wind[k][2]),Get(wind[k][3]));
float4x2 C = float4x2(Get4(wind[k][0]),Get4(wind[k][1]),Get4(wind[k][2]),Get4(wind[k][3]));
R += mul(transpose(C),C);
r += mul(y,C);
}
//Normalize
float n = NEDI_N3;
R /= n; r /= n;
//Calculate a = R^-1 . r
float e = NEDI_E3;
float2 a = solve(R+e*e*I,r+e*e/2.0);
//Nomalize 'a' (prevents overshoot)
a = .25 + float2(.4999,-.4999)*clamp(a[0]-a[1],-1.0,1.0);
//Calculate result
float2x3 x = float2x3(Value(dir[0])+Value(dir[1]),Value(dir[2])+Value(dir[3])) * float2x2(a,a);
float3 c = float3(x[0].xyz);
// float3 c = Value(dir[0]);
FragColor = float4(c, 1.0);//+float4(0,0.5,0.5,0);
}
#endif