mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 08:46:40 +00:00
45 lines
1.3 KiB
HLSL
45 lines
1.3 KiB
HLSL
|
/* GStreamer
|
||
|
|
* Copyright (C) 2023 Seungha Yang <seungha@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., 51 Franklin St, Fifth Floor,
|
||
|
|
* Boston, MA 02110-1301, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
cbuffer CheckerConstBuffer : register(b0)
|
||
|
|
{
|
||
|
|
float width;
|
||
|
|
float height;
|
||
|
|
float checker_size;
|
||
|
|
float alpha;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct PS_INPUT
|
||
|
|
{
|
||
|
|
float4 Position: SV_POSITION;
|
||
|
|
float2 Texture: TEXCOORD;
|
||
|
|
};
|
||
|
|
|
||
|
|
float4 PSMain_checker (PS_INPUT input) : SV_Target
|
||
|
|
{
|
||
|
|
float4 output;
|
||
|
|
float2 xy_mod = floor (0.5 * input.Texture * float2 (width, height) / checker_size);
|
||
|
|
float result = fmod (xy_mod.x + xy_mod.y, 2.0);
|
||
|
|
output.r = step (result, 0.5);
|
||
|
|
output.g = 1.0 - output.r;
|
||
|
|
output.b = 0;
|
||
|
|
output.a = alpha;
|
||
|
|
return output;
|
||
|
|
}
|