metaverse_artist/Lux URP Essentials/Shaders/Includes/Lux URP Transparent Lighting.hlsl

#ifndef LIGHTWEIGHT_TRANSPARENTLIGHTING_INCLUDED
#define LIGHTWEIGHT_TRANSPARENTLIGHTING_INCLUDED

half4 LuxLWRPTransparentFragmentPBR(InputData inputData, half3 albedo, half metallic, half3 specular,
    half smoothness, half occlusion, half3 emission, half alpha
)
{
    BRDFData brdfData;
    InitializeBRDFData(albedo, metallic, specular, smoothness, alpha, brdfData);

    Light mainLight = GetMainLight(inputData.shadowCoord);
    MixRealtimeAndBakedGI(mainLight, inputData.normalWS, inputData.bakedGI, half4(0, 0, 0, 0));

//  GetMainLight will return screen space shadows.
    #if defined(_MAIN_LIGHT_SHADOWS)
        ShadowSamplingData shadowSamplingData = GetMainLightShadowSamplingData();
        half shadowStrength = GetMainLightShadowStrength();
        mainLight.shadowAttenuation = SampleShadowmap(inputData.shadowCoord, TEXTURE2D_ARGS(_MainLightShadowmapTexture, sampler_MainLightShadowmapTexture), shadowSamplingData, shadowStrength, false);
    #endif

    half3 color = GlobalIllumination(brdfData, inputData.bakedGI, occlusion, inputData.normalWS, inputData.viewDirectionWS);
    color += LightingPhysicallyBased(brdfData, mainLight, inputData.normalWS, inputData.viewDirectionWS);

    #ifdef _ADDITIONAL_LIGHTS
        int pixelLightCount = GetAdditionalLightsCount();
        for (int i = 0; i < pixelLightCount; ++i)
        {
            Light light = GetAdditionalLight(i, inputData.positionWS);
            color += LightingPhysicallyBased(brdfData, light, inputData.normalWS, inputData.viewDirectionWS);
        }
    #endif

    #ifdef _ADDITIONAL_LIGHTS_VERTEX
        color += inputData.vertexLighting * brdfData.diffuse;
    #endif

    color += emission;

    return half4(color, alpha);
}
#endif