45 lines
1.6 KiB
HLSL
45 lines
1.6 KiB
HLSL
// SPDX-License-Identifier: (Not available for this version, you are only allowed to use this software if you have express permission from the copyright holder and agreed to the latest NiloToonURP EULA)
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// Copyright (c) 2021 Kuroneko ShaderLab Limited
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// For more information, visit -> https://github.com/ColinLeung-NiloCat/UnityURPToonLitShaderExample
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// #pragma once is a safe guard best practice in almost every .hlsl,
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// doing this can make sure your .hlsl's user can include this .hlsl anywhere anytime without producing any multi include conflict
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#pragma once
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half NiloAvg3(half3 inputColor)
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{
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// Using dot product should be efficient on the GPU due to vectorization and SIMD.
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return dot(half3(1.0h/3.0h, 1.0h/3.0h, 1.0h/3.0h), inputColor);
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// Direct average calculation might be slightly faster on the CPU,
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// especially if SIMD optimizations are not in use.
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//return (inputColor.r + inputColor.g + inputColor.b) / 3.0h;
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}
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float NiloGetFacing(FRONT_FACE_TYPE IsFrontFace)
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{
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return IS_FRONT_VFACE(IsFrontFace, 1.0, -1.0);
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}
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// TODO: revisit when min version is URP14, where sampler_PointClamp is defined by URP already
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/*
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struct NiloPrepassBufferRTData
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{
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half materialID; // r
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half characterVisibleArea; // g
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};
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TEXTURE2D_X(_NiloToonPrepassBufferTex);
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NiloPrepassBufferRTData NiloSamplePrepassBufferRT(float2 normalizeScreenSpaceUV)
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{
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half4 sample = SAMPLE_TEXTURE2D_X(_NiloToonPrepassBufferTex, sampler_PointClamp, normalizeScreenSpaceUV);
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NiloPrepassBufferRTData data;
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data.materialID = sample.r * 255.0;
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data.characterVisibleArea = sample.g;
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return data;
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}
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*/
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