Pass
{
	Name "DecalMeshForwardEmissive"
	Tags {"LightMode"="DecalMeshForwardEmissive"}


    ZWrite Off
    ZTest LEqual

    Blend 0 SrcAlpha One

	HLSLPROGRAM
	#pragma target 4.5
	#pragma multi_compile _ RENDERING_LAYERS
	#pragma multi_compile _ DEBUG_DISPLAY

	#define UNITY_MATERIAL_LIT

	${VFXIncludeRP("VFXDecalVaryings.template")}
    #include "Packages/com.unity.render-pipelines.high-definition/Runtime/Material/Decal/Decal.hlsl"
	#include "Packages/com.unity.render-pipelines.high-definition/Runtime/Material/Decal/DecalPrepassBuffer.hlsl"



	struct ps_input
	{
		float4 pos : SV_POSITION;
		${VFXHDRPDecalDeclareVaryings}
		UNITY_VERTEX_OUTPUT_STEREO
	};

	${VFXHDRPDecalVaryingsMacros}

	${VFXBegin:VFXVertexAdditionalProcess}
	${VFXHDRPDecalFillVaryings}
	${VFXEnd}


${VFXInclude("Shaders/ParticleHexahedron/Pass.template")}
#define SHADERPASS SHADERPASS_VFX_DECAL_FORWARD_EMISSIVE
${VFXIncludeRP("VFXDecal.template")}


	#pragma fragment frag
	void frag(ps_input i, out float4 outEmissive : SV_Target0)
	{
		UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);

#if VFX_USE_GRAPH_VALUES
    uint instanceActiveIndex = i.VFX_VARYINGS_INSTANCE_ACTIVE_INDEX;
    ${VFXLoadGraphValues}
#endif

		DecalSurfaceData surfaceData;
    	ZERO_INITIALIZE(DecalSurfaceData, surfaceData);
//TODO Ludovic : Pass graphValues here
		VFXGetSurfaceDecalData(surfaceData,i);
		outEmissive.rgb = surfaceData.emissive * GetCurrentExposureMultiplier();
		outEmissive.a = 1.0f;
	}
	ENDHLSL
}