Pass
{
    Name "Sprite Forward"
    Tags{"LightMode" = "UniversalForward"}

${Tags}
${Blending}
${Culling}
	ZWrite OFf

    HLSLPROGRAM
    // Required to compile gles 2.0 with standard srp library
    #pragma prefer_hlslcc gles
    #pragma exclude_renderers d3d11_9x
    #pragma target 2.0

    #pragma vertex vert
    #pragma fragment frag

    #pragma multi_compile _ ETC1_EXTERNAL_ALPHA

${Defines}
    #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
    #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
    #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl"
    #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"

#if ETC1_EXTERNAL_ALPHA
    TEXTURE2D(_AlphaTex); SAMPLER(sampler_AlphaTex);
    float _EnableAlphaTexture;
#endif
    float4 _RendererColor;

${Graph}
    struct GraphVertexOutput
    {
        float4 position : POSITION;
${VertexOutputStruct}
    };

    GraphVertexOutput vert (GraphVertexInput v)
    {
        GraphVertexOutput o = (GraphVertexOutput)0;
${VertexShader}
        VertexDescriptionInputs vdi = (VertexDescriptionInputs)0;
${VertexShaderDescriptionInputs}
        VertexDescription vd = PopulateVertexData(vdi);

        v.vertex.xyz = vd.Position;
		VertexColor = v.color;
        o.position = TransformObjectToHClip(v.vertex.xyz);

${VertexShaderOutputs}
        return o;
    }

    half4 frag (GraphVertexOutput IN) : SV_Target
    {
${PixelShader}
        SurfaceDescriptionInputs surfaceInput = (SurfaceDescriptionInputs)0;
${PixelShaderSurfaceInputs}
        SurfaceDescription surf = PopulateSurfaceData(surfaceInput);

#if ETC1_EXTERNAL_ALPHA
        float4 alpha = SAMPLE_TEXTURE2D(_AlphaTex, sampler_AlphaTex, IN.uv0.xy);
        surf.Color.a = lerp (surf.Color.a, alpha.r, _EnableAlphaTexture);
#endif

        surf.Color *= IN.VertexColor;
        return surf.Color;
    }

    ENDHLSL
}