gstreamer/ext/vulkan/shaders/swizzle.glsl

32 lines
1.1 KiB
GLSL

/* GStreamer
* Copyright (C) 2020 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _SWIZZLE_H_
#define _SWIZZLE_H_
vec4 swizzle(in vec4 texel, in ivec4 swizzle_idx)
{
return vec4(texel[swizzle_idx[0]], texel[swizzle_idx[1]], texel[swizzle_idx[2]], texel[swizzle_idx[3]]);
}
vec3 swizzle(in vec3 texel, in ivec3 swizzle_idx)
{
return vec3(texel[swizzle_idx[0]], texel[swizzle_idx[1]], texel[swizzle_idx[2]]);
}
#endif