mirror of https://github.com/mgba-emu/mgba.git
41 lines
1.5 KiB
Forth
41 lines
1.5 KiB
Forth
|
/*
|
||
|
|
VBA Pixelate Shader
|
||
|
|
|
||
|
|
Copyright (C) 2017 Dominus Iniquitatis - zerosaiko@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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
uniform sampler2D tex;
|
||
|
|
uniform vec2 texSize;
|
||
|
|
varying vec2 texCoord;
|
||
|
|
|
||
|
|
uniform float boundBrightness;
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
vec4 color = texture2D(tex, texCoord);
|
||
|
|
|
||
|
|
if (int(mod(texCoord.s * texSize.x * 2.0, 2.0)) == 0 ||
|
||
|
|
int(mod(texCoord.t * texSize.y * 2.0, 2.0)) == 0)
|
||
|
|
{
|
||
|
|
color.rgb *= vec3(1.0, 1.0, 1.0) * boundBrightness;
|
||
|
|
}
|
||
|
|
|
||
|
|
gl_FragColor = color;
|
||
|
|
}
|