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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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84 lines
2.3 KiB
HLSL
84 lines
2.3 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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static const float blocksize = 8.0;
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static const float4 high = float4 (0.667, 0.0, 0.0, 1.0);
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static const float4 low = float4 (0.333, 0.0, 0.0, 1.0);
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struct PS_INPUT
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{
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float4 Position : SV_POSITION;
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};
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struct PS_OUTPUT
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{
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float4 Plane : SV_TARGET;
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};
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PS_OUTPUT PSMain_checker_luma (PS_INPUT input)
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{
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PS_OUTPUT output;
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if ((input.Position.x % (blocksize * 2.0)) >= blocksize) {
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if ((input.Position.y % (blocksize * 2.0)) >= blocksize)
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output.Plane = low;
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else
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output.Plane = high;
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} else {
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if ((input.Position.y % (blocksize * 2.0)) < blocksize)
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output.Plane = low;
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else
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output.Plane = high;
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}
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return output;
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}
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#else
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static const char g_PSMain_checker_luma_str[] =
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"static const float blocksize = 8.0;\n"
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"static const float4 high = float4 (0.667, 0.0, 0.0, 1.0);\n"
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"static const float4 low = float4 (0.333, 0.0, 0.0, 1.0);\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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"};\n"
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"\n"
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"struct PS_OUTPUT\n"
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"{\n"
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" float4 Plane : SV_TARGET;\n"
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"};\n"
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"\n"
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"PS_OUTPUT PSMain_checker_luma (PS_INPUT input)\n"
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"{\n"
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" PS_OUTPUT output;\n"
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" if ((input.Position.x % (blocksize * 2.0)) >= blocksize) {\n"
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" if ((input.Position.y % (blocksize * 2.0)) >= blocksize)\n"
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" output.Plane = low;\n"
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" else\n"
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" output.Plane = high;\n"
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" } else {\n"
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" if ((input.Position.y % (blocksize * 2.0)) < blocksize)\n"
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" output.Plane = low;\n"
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" else\n"
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" output.Plane = high;\n"
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" }\n"
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" return output;\n"
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"}\n";
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#endif
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