// Copyright Epic Games, Inc. All Rights Reserved.

// Defines all paricles attributes
// - PARTICLE_ATTRIBUTE_OUTPUT - Defines an output variable
// - PARTICLE_ATTRIBUTE_OUTPUT_IMPLICIT - Defines an output variable which is already part of the main particle payload (i.e. always present)
// - PARTICLE_ATTRIBUTE_TRANSIENT - Defines an output that is temporary and not output
#define PARTICLE_ATTRIBUTES \
	PARTICLE_ATTRIBUTE_OUTPUT_IMPLICIT(int,		UniqueIndex) \
	PARTICLE_ATTRIBUTE_OUTPUT_IMPLICIT(float,	MaterialRandom) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	Position) \
	PARTICLE_ATTRIBUTE_OUTPUT(float4,	Color) \
	PARTICLE_ATTRIBUTE_OUTPUT(float,	RibbonWidth) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	Scale) \
	PARTICLE_ATTRIBUTE_OUTPUT(float2,	SpriteSize) \
	PARTICLE_ATTRIBUTE_OUTPUT(float,	SpriteRotation) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	Velocity) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	PreviousPosition) \
	PARTICLE_ATTRIBUTE_OUTPUT(float,	PreviousRibbonWidth) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	PreviousScale) \
	PARTICLE_ATTRIBUTE_OUTPUT(float2,	PreviousSpriteSize) \
	PARTICLE_ATTRIBUTE_OUTPUT(float,	PreviousSpriteRotation) \
	PARTICLE_ATTRIBUTE_OUTPUT(float3,	PreviousVelocity) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float,		CameraOffset) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	DynamicMaterialParameter0) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	DynamicMaterialParameter1) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	DynamicMaterialParameter2) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	DynamicMaterialParameter3) \
	PARTICLE_ATTRIBUTE_TRANSIENT(int,		MeshIndex) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	MeshOrientation) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float3,	SpriteFacing) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float3,	SpriteAlignment) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float,		SubImageIndex) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float,		PreviousCameraOffset) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float4,	PreviousMeshOrientation) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float3,	PreviousSpriteFacing) \
	PARTICLE_ATTRIBUTE_TRANSIENT(float3,	PreviousSpriteAlignment) \

// Defines modules and order of execution
#define PARTICLE_MODULES \
	PARTICLE_MODULE(InitializeParticle) \
	PARTICLE_MODULE(ShapeLocation) \
	PARTICLE_MODULE(ScaleColor) \
	PARTICLE_MODULE(ScaleSpriteSize) \
	PARTICLE_MODULE(RotateAroundPoint) \
	PARTICLE_MODULE(CalculateAccurateVelocity) \

#include "NiagaraStatelessSimulationTemplate.ush"