// The MIT License(MIT)
// 
// Copyright(c) 2022 - 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// 
// 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.

#include "/Engine/Public/Platform.ush"

#define NIS_HLSL 1
#define NIS_GLSL 0
#define NIS_UNROLL UNROLL

#ifndef NIS_SCALER
#define NIS_SCALER 1
#endif

#ifndef NIS_DXC
#define NIS_DXC 0
#endif

#if NIS_DXC
#define NIS_PUSH_CONSTANT    [[vk::push_constant]]
#define NIS_BINDING(bindingIndex) [[vk::binding(bindingIndex, 0)]]
#else
#define NIS_PUSH_CONSTANT
#define NIS_BINDING(bindingIndex)
#endif


//NIS_BINDING(0) cbuffer cb : register(b0)
//{
	float kDetectRatio;
	float kDetectThres;
	float kMinContrastRatio;
	float kRatioNorm;

	float kContrastBoost;
	float kEps;
	float kSharpStartY;
	float kSharpScaleY;

	float kSharpStrengthMin;
	float kSharpStrengthScale;
	float kSharpLimitMin;
	float kSharpLimitScale;

	float kScaleX;
	float kScaleY;

	float kDstNormX;
	float kDstNormY;
	float kSrcNormX;
	float kSrcNormY;

	uint kInputViewportOriginX;
	uint kInputViewportOriginY;
	uint kInputViewportWidth;
	uint kInputViewportHeight;

	uint kOutputViewportOriginX;
	uint kOutputViewportOriginY;
	uint kOutputViewportWidth;
	uint kOutputViewportHeight;

	float reserved0;
	float reserved1;
//};

NIS_BINDING(1) SamplerState samplerLinearClamp/* : register(s0)*/;
NIS_BINDING(2) Texture2D in_texture /*: register(t0)*/;
NIS_BINDING(3) RWTexture2D<float4> out_texture /*: register(u0)*/;
#if NIS_SCALER
NIS_BINDING(4) Texture2D coef_scaler /*: register(t1)*/;
NIS_BINDING(5) Texture2D coef_usm /*: register(t2)*/;
#endif


#include "/ThirdParty/Plugin/NIS/NIS_Scaler.h"

[numthreads(NIS_THREAD_GROUP_SIZE, 1, 1)]
void main(uint3 blockIdx : SV_GroupID, uint3 threadIdx : SV_GroupThreadID)
{
#if NIS_SCALER
	NVScaler(blockIdx.xy, threadIdx.x);
#else
	NVSharpen(blockIdx.xy, threadIdx.x);
#endif
}