// Forward pass
Pass
{		
	Tags { "LightMode"=${VFXPassForward} }
	
	${VFXStencilForward}

	HLSLPROGRAM
	#pragma target 4.5
	${VFXPassForwardAdditionalPragma}
	
	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
		nointerpolation float texIndex : TEXCOORD7;
		#endif
		#if VFX_FEATURE_MOTION_VECTORS_FORWARD
		VFX_FEATURE_MOTION_VECTORS_INTERPOLATION float4 cPosPrevious : TEXCOORD7;
		VFX_FEATURE_MOTION_VECTORS_INTERPOLATION float4 cPosNonJiterred : TEXCOORD8;
		#endif
		
		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 texIndex
#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 cPosNonJiterred
#define VFX_VARYING_VELOCITY_CPOS_PREVIOUS cPosPrevious
#endif

	${VFXPassForwardDefine}
	${VFXInclude("Shaders/ParticleHexahedron/Pass.template")}	
		
	#pragma fragment frag
	ps_output frag(ps_input i)
	{
		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
		return o;
	}
	ENDHLSL
}