struct ps_input
{
	float4 pos : SV_POSITION;
	float3 offsets : TEXCOORD0;
	#if VFX_NEEDS_COLOR_INTERPOLATOR
	nointerpolation float4 color : COLOR0;
	#endif
	#if USE_SOFT_PARTICLE || USE_ALPHA_TEST || VFX_FEATURE_MOTION_VECTORS_FORWARD
	// x: inverse soft particles fade distance
	// y: alpha threshold
	nointerpolation float2 builtInInterpolants : TEXCOORD1;
	#endif
	#if USE_FLIPBOOK_MOTIONVECTORS
	// x: motion vectors scale X
	// y: motion vectors scale Y
	nointerpolation float2 builtInInterpolants2 : TEXCOORD2;
	#endif
	nointerpolation uint faceID : TEXCOORD3;
	#if VFX_NEEDS_POSWS_INTERPOLATOR
	float3 posWS : TEXCOORD4;
	#endif
	#if USE_UV_SCALE_BIAS
	nointerpolation float4 scaleBias : TEXCOORD5;
	#endif
	#if USE_FLIPBOOK
	#if USE_FLIPBOOK_ARRAY_LAYOUT
		nointerpolation float flipBookSize : TEXCOORD6;
	#else
		nointerpolation float4 flipBookSize : TEXCOORD6;
	#endif
	// x: texIndex
	// y: texIndexBlend
	nointerpolation float2 texIndices : TEXCOORD7;
	#endif
	#if VFX_FEATURE_MOTION_VECTORS_FORWARD
	VFX_DECLARE_MOTION_VECTORS_STORAGE(7, 8)
	#endif
	VFX_VERTEX_OUTPUT_INSTANCE_INDEX
	UNITY_VERTEX_OUTPUT_STEREO
};

struct ps_output
{
	float4 color : SV_Target0;
#if VFX_FEATURE_MOTION_VECTORS_FORWARD
	float4 outMotionVector : SV_Target1;
#endif
};

#define VFX_VARYING_PS_INPUTS ps_input
#define VFX_VARYING_POSCS pos
#define VFX_VARYING_COLOR color.rgb
#define VFX_VARYING_ALPHA color.a
#define VFX_VARYING_INVSOFTPARTICLEFADEDISTANCE builtInInterpolants.x
#define VFX_VARYING_ALPHATHRESHOLD builtInInterpolants.y
#define VFX_VARYING_OFFSETS offsets
#define VFX_VARYING_FACEID faceID
#if VFX_NEEDS_POSWS_INTERPOLATOR
#define VFX_VARYING_POSWS posWS
#endif
#if USE_UV_SCALE_BIAS
#define VFX_VARYING_UV_SCALE scaleBias.xy
#define VFX_VARYING_UV_BIAS scaleBias.zw
#endif
#if USE_FLIPBOOK
#define VFX_VARYING_TEXINDEX texIndices.x
#if USE_FLIPBOOK_INTERPOLATION
#define VFX_VARYING_TEXINDEXBLEND texIndices.y
#endif
#if USE_FLIPBOOK_ARRAY_LAYOUT
#define VFX_VARYING_FLIPBOOKSIZE flipBookSize
#else
#define VFX_VARYING_FLIPBOOKSIZE flipBookSize.xy
#define VFX_VARYING_INVFLIPBOOKSIZE flipBookSize.zw
#endif
#endif
#if USE_FLIPBOOK_MOTIONVECTORS
#define VFX_VARYING_MOTIONVECTORSCALE builtInInterpolants2.xy
#endif

#if VFX_FEATURE_MOTION_VECTORS_FORWARD
#define VFX_VARYING_VELOCITY_CPOS VFX_DECLARE_MOTION_VECTORS_VARYING_NONJITTER
#define VFX_VARYING_VELOCITY_CPOS_PREVIOUS VFX_DECLARE_MOTION_VECTORS_VARYING_PREVIOUS
#endif

${VFXPassForwardDefine}
${VFXInclude("Shaders/ParticleHexahedron/Pass.template")}

#pragma fragment frag
ps_output frag(ps_input i)
{
#if VFX_USE_GRAPH_VALUES
    uint instanceActiveIndex = i.VFX_VARYINGS_INSTANCE_ACTIVE_INDEX;
    ${VFXLoadGraphValues}
#endif
	UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
	ps_output o = (ps_output)0;
	VFXTransformPSInputs(i);
	o.color = VFXGetFragmentColor(i);

	o.color *= VFXGetTextureColorWithProceduralUV(VFX_SAMPLER(mainTexture),i,VFXCubeGetUV(i));
	o.color = VFXApplyFog(o.color,i);
	VFXClipFragmentColor(o.color.a,i);

#if VFX_FEATURE_MOTION_VECTORS_FORWARD
	${VFXComputeOutputMotionVector}
	o.outMotionVector = encodedMotionVector;
	o.outMotionVector.a = o.color.a < i.VFX_VARYING_ALPHATHRESHOLD ? 0.0f : 1.0f; //Independant clipping for motion vector pass
#endif

    ${VFXUnlitDebugDisplay}

	return o;
}