51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
// This file is part of the FidelityFX SDK.
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//
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// Copyright (C) 2024 Advanced Micro Devices, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files(the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and /or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions :
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#ifndef FFX_DNSR_SHADOWS_UTILS_HLSL
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#define FFX_DNSR_SHADOWS_UTILS_HLSL
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FfxUInt32 FFX_DNSR_Shadows_RoundedDivide(FfxUInt32 value, FfxUInt32 divisor)
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{
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return (value + divisor - 1) / divisor;
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}
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FfxUInt32x2 FFX_DNSR_Shadows_GetTileIndexFromPixelPosition(FfxUInt32x2 pixel_pos)
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{
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return FfxUInt32x2(pixel_pos.x / 8, pixel_pos.y / 4);
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}
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FfxUInt32 FFX_DNSR_Shadows_LinearTileIndex(FfxUInt32x2 tile_index, FfxUInt32 screen_width)
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{
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return tile_index.y * FFX_DNSR_Shadows_RoundedDivide(screen_width, 8) + tile_index.x;
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}
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FfxUInt32 FFX_DNSR_Shadows_GetBitMaskFromPixelPosition(FfxUInt32x2 pixel_pos)
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{
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FfxUInt32 lane_index = (pixel_pos.y % 4) * 8 + (pixel_pos.x % 8);
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return (1u << lane_index);
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}
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#define TILE_META_DATA_CLEAR_MASK 1
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#define TILE_META_DATA_LIGHT_MASK 2
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#endif
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