mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-15 12:56:33 +00:00
46 lines
1.2 KiB
HLSL
46 lines
1.2 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 SnowConstBuffer : register(b0)
|
||
|
|
{
|
||
|
|
float time;
|
||
|
|
float alpha;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct PS_INPUT
|
||
|
|
{
|
||
|
|
float4 Position : SV_POSITION;
|
||
|
|
float2 Texture : TEXCOORD;
|
||
|
|
};
|
||
|
|
|
||
|
|
float get_rand (float2 uv)
|
||
|
|
{
|
||
|
|
return frac (sin (dot (uv, float2 (12.9898,78.233))) * 43758.5453);
|
||
|
|
}
|
||
|
|
|
||
|
|
float4 PSMain_snow (PS_INPUT input) : SV_Target
|
||
|
|
{
|
||
|
|
float4 output;
|
||
|
|
float val = get_rand (time * input.Texture);
|
||
|
|
output.rgb = float3(val, val, val);
|
||
|
|
output.a = alpha;
|
||
|
|
return output;
|
||
|
|
}
|
||
|
|
|