// Copyright (c) 2024 Nico de Poel
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma kernel CS

#pragma multi_compile_local __ FFX_HALF
#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
#pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH

#pragma multi_compile __ UNITY_FFX_TEXTURE2D_X_ARRAY

#include "ffx_unity_common.cginc"

// Wave operations require shader model 6.0; this can only be enabled when using DXC on D3D12
// These pragmas are commented out by default as Unity will sometimes ignore the #if's and try to enable these features anyway.
// Uncomment the below lines if you intend to try wave operations on DX12 with the DXC compiler.
//#if defined(UNITY_COMPILER_DXC) && defined(SHADER_API_D3D12)
//#pragma require WaveBasic   // Required for WaveGetLaneIndex
//#pragma require WaveBallot  // Required for WaveReadLaneAt
//#else
#define FFX_SPD_NO_WAVE_OPERATIONS
//#endif

#include "shaders/ffx_fsr2_compute_luminance_pyramid_pass.hlsl"