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82 lines
4.2 KiB
82 lines
4.2 KiB
// Copyright (c) 2024 Nico de Poel
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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 all
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// 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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// Suppress a few warnings produced by FFX's HLSL code
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#pragma warning(disable: 3078) // Loop control variable conflicts
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#pragma warning(disable: 3203) // Signed/unsigned mismatch
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#pragma warning(disable: 3556) // Integer divides might be much slower, try using uints if possible
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#define FFX_GPU // Compiling for GPU
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#define FFX_HLSL // Compile for plain HLSL
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// Use the DXC shader compiler on modern graphics APIs to enable a few advanced features
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// The DXC-related pragmas are disabled by default, as DXC doesn't support all platforms yet and will break on some platforms when enabled.
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// Consider this to be an experimental feature. If you want to benefit from 16-bit floating point and wave operations, and don't care about supporting older graphics APIs, then it's worth a try.
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//#if defined(SHADER_API_D3D12) || defined(SHADER_API_VULKAN) || defined(SHADER_API_METAL)
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//#pragma use_dxc // Using DXC will currently break DX11 support since DX11 and DX12 share the same shader bytecode in Unity.
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//#endif
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// Enable half precision data types on platforms that support it
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//#if defined(UNITY_COMPILER_DXC) && defined(FFX_HALF)
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//#pragma require Native16Bit
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//#endif
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// Hack to work around the lack of texture atomics on Metal
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#if defined(SHADER_API_METAL)
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#define InterlockedAdd(dest, val, orig) { (orig) = (dest); (dest) += (val); }
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#define InterlockedMin(dest, val) { (dest) = min((dest), (val)); }
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#define InterlockedMax(dest, val) { (dest) = max((dest), (val)); }
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#endif
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// Workaround for HDRP using texture arrays for its camera buffers on some platforms
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// The below defines are adapted from: Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureXR.hlsl
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#if ((defined(SHADER_API_D3D11) || defined(SHADER_API_D3D12)) && !defined(SHADER_API_XBOXONE) && !defined(SHADER_API_GAMECORE)) || defined(SHADER_API_PSSL) || defined(SHADER_API_VULKAN)
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#define UNITY_TEXTURE2D_X_ARRAY_SUPPORTED
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#endif
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// Control if TEXTURE2D_X macros will expand to texture arrays
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#if defined(UNITY_TEXTURE2D_X_ARRAY_SUPPORTED) && defined(UNITY_FSR_TEXTURE2D_X_ARRAY)
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#define USE_TEXTURE2D_X_AS_ARRAY
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#endif
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// Early defines for single-pass instancing
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#if defined(STEREO_INSTANCING_ON) && defined(UNITY_TEXTURE2D_X_ARRAY_SUPPORTED)
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#define UNITY_STEREO_INSTANCING_ENABLED
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#endif
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// Helper macros to handle XR single-pass with Texture2DArray
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#if defined(USE_TEXTURE2D_X_AS_ARRAY)
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// Only single-pass stereo instancing used array indexing
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#if defined(UNITY_STEREO_INSTANCING_ENABLED)
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static uint unity_StereoEyeIndex;
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#define SLICE_ARRAY_INDEX unity_StereoEyeIndex
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#else
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#define SLICE_ARRAY_INDEX 0
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#endif
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// Declare and sample camera buffers as texture arrays
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#define UNITY_FSR_TEX2D(type) Texture2DArray<type>
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#define UNITY_FSR_RWTEX2D(type) RWTexture2DArray<type>
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#define UNITY_FSR_POS(pxPos) FfxUInt32x3(pxPos, SLICE_ARRAY_INDEX)
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#define UNITY_FSR_UV(uv) FfxFloat32x3(uv, SLICE_ARRAY_INDEX)
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#define UNITY_FSR_GETDIMS(tex, w, h) { FfxUInt32 uElements; (tex).GetDimensions((w), (h), uElements); }
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#endif
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