mame/3rdparty/bgfx/examples/14-shadowvolumes/fs_shadowvolume_svfronttex2.sc
Miodrag Milanović 812e6094f4
Update BGFX, BX and BIMG (#10789)
* Update to bgfx a93a714632b79b5ddbf5c86ac323fa9b76ed3433
Co-authored-by: Бранимир Караџић <branimirkaradzic@gmail.com>
2023-01-05 09:32:40 -05:00

25 lines
475 B
Scala

/*
* Copyright 2013-2014 Dario Manesku. All rights reserved.
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
*/
#include "../common/common.sh"
vec4 stencilColor(float _k)
{
return vec4(float(abs(_k - 1.0) < 0.0001)/255.0
, float(abs(_k + 1.0) < 0.0001)/255.0
, float(abs(_k - 2.0) < 0.0001)/255.0
, float(abs(_k + 2.0) < 0.0001)/255.0
);
}
void main()
{
float k = -2.0;
if (gl_FrontFacing)
k = -k;
gl_FragColor = stencilColor(k);
}