| 1 |
4c1dd6e9
|
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 |
|
|
|
| 20 |
d6e94c84
|
Leszek Koltunski
|
#define NUM_POSTPROCESS 3
|
| 21 |
|
|
#define BLUR 0
|
| 22 |
|
|
|
| 23 |
|
|
precision lowp float;
|
| 24 |
|
|
|
| 25 |
|
|
varying vec2 v_TexCoordinate;
|
| 26 |
4c1dd6e9
|
Leszek Koltunski
|
uniform sampler2D u_Texture;
|
| 27 |
|
|
uniform vec2 u_objD;
|
| 28 |
d6e94c84
|
Leszek Koltunski
|
uniform int pNumEffects; // total number of postprocessing effects
|
| 29 |
4c1dd6e9
|
Leszek Koltunski
|
|
| 30 |
|
|
#if NUM_POSTPROCESS>0
|
| 31 |
|
|
uniform int pType[NUM_POSTPROCESS]; // their types.
|
| 32 |
|
|
uniform vec4 pUniforms[2*NUM_POSTPROCESS]; // i-th effect is 2 consecutive vec4's: [2*i], [2*i+1].
|
| 33 |
|
|
|
| 34 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 35 |
|
|
// BLUR EFFECT
|
| 36 |
|
|
|
| 37 |
d6e94c84
|
Leszek Koltunski
|
void blur(out vec4 pixel)
|
| 38 |
4c1dd6e9
|
Leszek Koltunski
|
{
|
| 39 |
d6e94c84
|
Leszek Koltunski
|
pixel = vec4(0.0);
|
| 40 |
4c1dd6e9
|
Leszek Koltunski
|
|
| 41 |
|
|
float blurSizeH = 1.0 / u_objD.x;
|
| 42 |
|
|
float blurSizeV = 1.0 / u_objD.y;
|
| 43 |
|
|
|
| 44 |
d6e94c84
|
Leszek Koltunski
|
for (float x = -4.0; x <= 4.0; x+=1.0)
|
| 45 |
|
|
for (float y = -4.0; y <= 4.0; y+=1.0)
|
| 46 |
|
|
{
|
| 47 |
|
|
pixel += texture2D( u_Texture, vec2(v_TexCoordinate.x + x * blurSizeH, v_TexCoordinate.y + y * blurSizeV) ) / 81.0;
|
| 48 |
|
|
}
|
| 49 |
4c1dd6e9
|
Leszek Koltunski
|
}
|
| 50 |
|
|
|
| 51 |
|
|
#endif
|
| 52 |
|
|
|
| 53 |
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
| 54 |
|
|
|
| 55 |
|
|
void main()
|
| 56 |
|
|
{
|
| 57 |
|
|
vec4 pixel = texture2D(u_Texture,v_TexCoordinate);
|
| 58 |
|
|
|
| 59 |
|
|
#if NUM_POSTPROCESS>0
|
| 60 |
d6e94c84
|
Leszek Koltunski
|
for(int i=0; i<pNumEffects; i++)
|
| 61 |
4c1dd6e9
|
Leszek Koltunski
|
{
|
| 62 |
|
|
if( pType[i]==BLUR ) blur(pixel);
|
| 63 |
|
|
}
|
| 64 |
|
|
#endif
|
| 65 |
|
|
|
| 66 |
|
|
gl_FragColor = pixel;
|
| 67 |
|
|
}
|