| 1 |
d333eb6b
|
Leszek Koltunski
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 2 |
|
|
// Copyright 2016 Leszek Koltunski //
|
| 3 |
|
|
// //
|
| 4 |
|
|
// This file is part of Distorted. //
|
| 5 |
|
|
// //
|
| 6 |
|
|
// Distorted is free software: you can redistribute it and/or modify //
|
| 7 |
|
|
// it under the terms of the GNU General Public License as published by //
|
| 8 |
|
|
// the Free Software Foundation, either version 2 of the License, or //
|
| 9 |
|
|
// (at your option) any later version. //
|
| 10 |
|
|
// //
|
| 11 |
|
|
// Distorted is distributed in the hope that it will be useful, //
|
| 12 |
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
| 13 |
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
| 14 |
|
|
// GNU General Public License for more details. //
|
| 15 |
|
|
// //
|
| 16 |
|
|
// You should have received a copy of the GNU General Public License //
|
| 17 |
|
|
// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
|
| 18 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 19 |
6a06a912
|
Leszek Koltunski
|
|
| 20 |
8cefe6a3
|
Leszek Koltunski
|
precision lowp float;
|
| 21 |
6a06a912
|
Leszek Koltunski
|
|
| 22 |
d333eb6b
|
Leszek Koltunski
|
uniform sampler2D u_Texture; // The input texture.
|
| 23 |
6a06a912
|
Leszek Koltunski
|
|
| 24 |
2fce34f4
|
Leszek Koltunski
|
varying vec3 v_Position; // Interpolated position for this fragment.
|
| 25 |
d333eb6b
|
Leszek Koltunski
|
varying vec3 v_Normal; // Interpolated normal for this fragment.
|
| 26 |
|
|
varying vec2 v_TexCoordinate; // Interpolated texture coordinate per fragment.
|
| 27 |
6a06a912
|
Leszek Koltunski
|
|
| 28 |
|
|
uniform int fNumEffects; // total number of fragment effects
|
| 29 |
|
|
|
| 30 |
|
|
#if NUM_FRAGMENT>0
|
| 31 |
|
|
uniform int fType[NUM_FRAGMENT]; // their types.
|
| 32 |
2fce34f4
|
Leszek Koltunski
|
uniform vec4 fUniforms[2*NUM_FRAGMENT]; // i-th effect is 2 consecutive vec4's: [2*i], [2*i+1]. First vec4 is the Interpolated values,
|
| 33 |
|
|
// next describes the Region, i.e. area over which the effect is active.
|
| 34 |
|
|
|
| 35 |
ffbf279e
|
Leszek Koltunski
|
const vec3 LUMI = vec3( 0.2125, 0.7154, 0.0721 );
|
| 36 |
6a06a912
|
Leszek Koltunski
|
|
| 37 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 38 |
341c803d
|
Leszek Koltunski
|
// CHROMA EFFECT
|
| 39 |
6a06a912
|
Leszek Koltunski
|
|
| 40 |
81a0b906
|
leszek
|
#if defined(CHROMA) || defined(SMOOTH_CHROMA)
|
| 41 |
ffbf279e
|
Leszek Koltunski
|
void chroma(float degree, int effect, inout vec4 color)
|
| 42 |
6a06a912
|
Leszek Koltunski
|
{
|
| 43 |
ffbf279e
|
Leszek Koltunski
|
color.rgb = mix(color.rgb, fUniforms[effect].yzw, degree*fUniforms[effect].x);
|
| 44 |
6a06a912
|
Leszek Koltunski
|
}
|
| 45 |
81a0b906
|
leszek
|
#endif
|
| 46 |
6a06a912
|
Leszek Koltunski
|
|
| 47 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 48 |
341c803d
|
Leszek Koltunski
|
// ALPHA EFFECT (change transparency level)
|
| 49 |
6a06a912
|
Leszek Koltunski
|
|
| 50 |
81a0b906
|
leszek
|
#if defined(ALPHA) || defined(SMOOTH_ALPHA)
|
| 51 |
ffbf279e
|
Leszek Koltunski
|
void alpha(float degree, int effect, inout vec4 color)
|
| 52 |
6a06a912
|
Leszek Koltunski
|
{
|
| 53 |
ffbf279e
|
Leszek Koltunski
|
color.a *= (degree*(fUniforms[effect].x-1.0)+1.0);
|
| 54 |
6a06a912
|
Leszek Koltunski
|
}
|
| 55 |
81a0b906
|
leszek
|
#endif
|
| 56 |
6a06a912
|
Leszek Koltunski
|
|
| 57 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 58 |
341c803d
|
Leszek Koltunski
|
// BRIGHTNESS EFFECT
|
| 59 |
6a06a912
|
Leszek Koltunski
|
|
| 60 |
81a0b906
|
leszek
|
#if defined(BRIGHTNESS) || defined(SMOOTH_BRIGHTNESS)
|
| 61 |
ffbf279e
|
Leszek Koltunski
|
void brightness(float degree, int effect, inout vec4 color)
|
| 62 |
6a06a912
|
Leszek Koltunski
|
{
|
| 63 |
ffbf279e
|
Leszek Koltunski
|
color.rgb = mix(vec3(0.0,0.0,0.0), color.rgb, degree*(fUniforms[effect].x-1.0)+1.0 );
|
| 64 |
6a06a912
|
Leszek Koltunski
|
}
|
| 65 |
81a0b906
|
leszek
|
#endif
|
| 66 |
|
|
|
| 67 |
6a06a912
|
Leszek Koltunski
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 68 |
341c803d
|
Leszek Koltunski
|
// CONTRAST EFFECT
|
| 69 |
6a06a912
|
Leszek Koltunski
|
|
| 70 |
81a0b906
|
leszek
|
#if defined(CONTRAST) || defined(SMOOTH_CONTRAST)
|
| 71 |
ffbf279e
|
Leszek Koltunski
|
void contrast(float degree, int effect, inout vec4 color)
|
| 72 |
6a06a912
|
Leszek Koltunski
|
{
|
| 73 |
ffbf279e
|
Leszek Koltunski
|
color.rgb = mix(vec3(0.5,0.5,0.5), color.rgb, degree*(fUniforms[effect].x-1.0)+1.0 );
|
| 74 |
6a06a912
|
Leszek Koltunski
|
}
|
| 75 |
81a0b906
|
leszek
|
#endif
|
| 76 |
6a06a912
|
Leszek Koltunski
|
|
| 77 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 78 |
341c803d
|
Leszek Koltunski
|
// SATURATION EFFECT
|
| 79 |
6a06a912
|
Leszek Koltunski
|
|
| 80 |
81a0b906
|
leszek
|
#if defined(SATURATION) || defined(SMOOTH_SATURATION)
|
| 81 |
ffbf279e
|
Leszek Koltunski
|
void saturation(float degree, int effect, inout vec4 color)
|
| 82 |
6a06a912
|
Leszek Koltunski
|
{
|
| 83 |
ffbf279e
|
Leszek Koltunski
|
float luminance = dot(LUMI,color.rgb);
|
| 84 |
|
|
color.rgb = mix(vec3(luminance,luminance,luminance), color.rgb, degree*(fUniforms[effect].x-1.0)+1.0 );
|
| 85 |
6a06a912
|
Leszek Koltunski
|
}
|
| 86 |
81a0b906
|
leszek
|
#endif
|
| 87 |
6a06a912
|
Leszek Koltunski
|
|
| 88 |
|
|
#endif
|
| 89 |
|
|
|
| 90 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 91 |
|
|
|
| 92 |
|
|
void main()
|
| 93 |
|
|
{
|
| 94 |
42e08626
|
Leszek Koltunski
|
vec4 pixel = texture2D(u_Texture,v_TexCoordinate);
|
| 95 |
4018b3b7
|
Leszek Koltunski
|
|
| 96 |
|
|
#if NUM_FRAGMENT>0
|
| 97 |
6a06a912
|
Leszek Koltunski
|
vec2 diff;
|
| 98 |
|
|
float pointDegree;
|
| 99 |
ffbf279e
|
Leszek Koltunski
|
|
| 100 |
6a06a912
|
Leszek Koltunski
|
for(int i=0; i<fNumEffects; i++)
|
| 101 |
|
|
{
|
| 102 |
2fce34f4
|
Leszek Koltunski
|
diff = (v_Position.xy - fUniforms[2*i+1].xy)/fUniforms[2*i+1].zw;
|
| 103 |
6a06a912
|
Leszek Koltunski
|
pointDegree = max(0.0,1.0-dot(diff,diff));
|
| 104 |
341c803d
|
Leszek Koltunski
|
|
| 105 |
81a0b906
|
leszek
|
#ifdef CHROMA
|
| 106 |
|
|
if( fType[i]==CHROMA ) chroma (sign(pointDegree),2*i,pixel); else
|
| 107 |
|
|
#endif
|
| 108 |
|
|
#ifdef SMOOTH_CHROMA
|
| 109 |
|
|
if( fType[i]==SMOOTH_CHROMA ) chroma ( pointDegree ,2*i,pixel); else
|
| 110 |
|
|
#endif
|
| 111 |
|
|
#ifdef ALPHA
|
| 112 |
|
|
if( fType[i]==ALPHA ) alpha (sign(pointDegree),2*i,pixel); else
|
| 113 |
|
|
#endif
|
| 114 |
|
|
#ifdef SMOOTH_ALPHA
|
| 115 |
|
|
if( fType[i]==SMOOTH_ALPHA ) alpha ( pointDegree ,2*i,pixel); else
|
| 116 |
|
|
#endif
|
| 117 |
|
|
#ifdef BRIGHTNESS
|
| 118 |
|
|
if( fType[i]==BRIGHTNESS ) brightness(sign(pointDegree),2*i,pixel); else
|
| 119 |
|
|
#endif
|
| 120 |
|
|
#ifdef SMOOTH_BRIGHTNESS
|
| 121 |
|
|
if( fType[i]==SMOOTH_BRIGHTNESS ) brightness( pointDegree ,2*i,pixel); else
|
| 122 |
|
|
#endif
|
| 123 |
|
|
#ifdef CONTRAST
|
| 124 |
|
|
if( fType[i]==CONTRAST ) contrast (sign(pointDegree),2*i,pixel); else
|
| 125 |
|
|
#endif
|
| 126 |
|
|
#ifdef SMOOTH_CONTRAST
|
| 127 |
|
|
if( fType[i]==SMOOTH_CONTRAST ) contrast ( pointDegree ,2*i,pixel); else
|
| 128 |
|
|
#endif
|
| 129 |
|
|
#ifdef SATURATION
|
| 130 |
|
|
if( fType[i]==SATURATION ) saturation(sign(pointDegree),2*i,pixel); else
|
| 131 |
|
|
#endif
|
| 132 |
|
|
#ifdef SMOOTH_SATURATION
|
| 133 |
|
|
if( fType[i]==SMOOTH_SATURATION ) saturation( pointDegree ,2*i,pixel); else
|
| 134 |
|
|
#endif
|
| 135 |
|
|
{}
|
| 136 |
6a06a912
|
Leszek Koltunski
|
}
|
| 137 |
|
|
#endif
|
| 138 |
ff8ad0a7
|
Leszek Koltunski
|
|
| 139 |
c90b9e01
|
Leszek Koltunski
|
gl_FragColor = vec4(pixel.rgb * (1.0 + 7.0*v_Normal.z) * 0.125, pixel.a);
|
| 140 |
341c803d
|
Leszek Koltunski
|
}
|