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

    // Render State
    Cull Front
    Blend SrcAlpha OneMinusSrcAlpha
    ZTest Greater
    ZWrite Off

    HLSLPROGRAM

    // Pragmas
    #pragma target 2.5
    #pragma multi_compile_fog
    #pragma editor_sync_compilation

    // Keywords
    #pragma multi_compile _ _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _MAIN_LIGHT_SHADOWS_SCREEN
    #pragma multi_compile _ _ADDITIONAL_LIGHTS_VERTEX _ADDITIONAL_LIGHTS
    #pragma multi_compile_fragment _ _ADDITIONAL_LIGHT_SHADOWS
    #pragma multi_compile_fragment _ _SHADOWS_SOFT _SHADOWS_SOFT_LOW _SHADOWS_SOFT_MEDIUM _SHADOWS_SOFT_HIGH
    #pragma multi_compile _ _FORWARD_PLUS
    #include_with_pragmas "Packages/com.unity.render-pipelines.core/ShaderLibrary/FoveatedRenderingKeywords.hlsl"
    #pragma multi_compile_fragment _ DEBUG_DISPLAY
    #pragma multi_compile _DECAL_NORMAL_BLEND_LOW _DECAL_NORMAL_BLEND_MEDIUM _DECAL_NORMAL_BLEND_HIGH
    #pragma multi_compile _ _DECAL_LAYERS

    ${VFXIncludeRP("VFXDecalVaryings.template")}
    #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DecalInput.hlsl"
    #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/FoveatedRendering.hlsl"

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

    ${VFXURPDecalVaryingsMacros}

    ${VFXBegin:VFXVertexAdditionalProcess}
    ${VFXURPDecalFillVaryings}
    ${VFXEnd}

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

    #define SHADERPASS SHADERPASS_DECAL_SCREEN_SPACE_PROJECTOR

    #if ((!defined(AFFECT_NORMAL) && defined(AFFECT_BASE_COLOR)) || (defined(AFFECT_NORMAL)))
        #define DECAL_RECONSTRUCT_NORMAL
    #elif defined(DECAL_ANGLE_FADE)
        #define DECAL_LOAD_NORMAL
    #endif

    #ifdef DECAL_RECONSTRUCT_NORMAL
        #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/NormalReconstruction.hlsl"
    #endif

    #if defined(DECAL_LOAD_NORMAL)
        #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DeclareNormalsTexture.hlsl"
    #endif

    ${VFXIncludeRP("VFXDecal.template")}

    half4 VFXComputePixelOutputScreenSpaceDecal(VFX_VARYING_PS_INPUTS i)
    {
        SurfaceData surfaceData;
        ZERO_INITIALIZE(SurfaceData, surfaceData);
        InputData inputData;
        ZERO_INITIALIZE(InputData, inputData);
        DecalSurfaceData decalSurfaceData;
        ZERO_INITIALIZE(DecalSurfaceData, decalSurfaceData);

        PrepareSurfaceAndInputData(i, surfaceData, decalSurfaceData, inputData);

        half4 color = UniversalFragmentPBR(inputData, surfaceData);

        color.rgb = MixFog(color.rgb, inputData.fogCoord);
        return color;
    }

    #pragma fragment frag
    void frag(VFX_VARYING_PS_INPUTS i, out half4 outColor : SV_Target0)
    {
        UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
        outColor = VFXComputePixelOutputScreenSpaceDecal(i);
    }
    ENDHLSL
}