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62 lines
1.9 KiB
HLSL
62 lines
1.9 KiB
HLSL
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/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef BUILDING_HLSL
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Texture2D shaderTexture;
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SamplerState samplerState;
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struct PS_INPUT
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{
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float4 Position : SV_POSITION;
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float2 Texture : TEXCOORD;
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};
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float4 PSMain_sample_premul (PS_INPUT input): SV_TARGET
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{
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float4 sample = shaderTexture.Sample (samplerState, input.Texture);
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float4 premul_sample;
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premul_sample.r = saturate (sample.r * sample.a);
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premul_sample.g = saturate (sample.g * sample.a);
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premul_sample.b = saturate (sample.b * sample.a);
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premul_sample.a = sample.a;
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return premul_sample;
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}
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#else
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static const char g_PSMain_sample_premul_str[] =
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"Texture2D shaderTexture;\n"
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"SamplerState samplerState;\n"
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"\n"
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"struct PS_INPUT\n"
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"{\n"
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" float4 Position : SV_POSITION;\n"
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" float2 Texture : TEXCOORD;\n"
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"};\n"
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"\n"
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"float4 PSMain_sample_premul (PS_INPUT input): SV_TARGET\n"
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"{\n"
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" float4 sample = shaderTexture.Sample (samplerState, input.Texture);\n"
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" float4 premul_sample;\n"
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" premul_sample.r = saturate (sample.r * sample.a);\n"
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" premul_sample.g = saturate (sample.g * sample.a);\n"
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" premul_sample.b = saturate (sample.b * sample.a);\n"
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" premul_sample.a = sample.a;\n"
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" return premul_sample;\n"
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"}\n";
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#endif
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