gstreamer/subprojects/gst-plugins-bad/sys/d3d12/hlsl/PSMain_sample_premul.hlsl

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/* 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.
*/
Texture2D shaderTexture : register(t0, space0);
SamplerState samplerState : register(s0, space0);
struct PS_INPUT
{
float4 Position : SV_POSITION;
float2 Texture : TEXCOORD;
};
float4 PSMain_sample_premul (PS_INPUT input): SV_TARGET
{
float4 sample = shaderTexture.Sample (samplerState, input.Texture);
float4 premul_sample;
premul_sample.r = saturate (sample.r * sample.a);
premul_sample.g = saturate (sample.g * sample.a);
premul_sample.b = saturate (sample.b * sample.a);
premul_sample.a = sample.a;
return premul_sample;
}