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using UnityEngine.Rendering;
namespace UnityEngine.PostProcessing;
public sealed class FogComponent : PostProcessingComponentCommandBuffer<FogModel>
{
private static class Uniforms
{
internal static readonly int _FogColor = Shader.PropertyToID("_FogColor");
internal static readonly int _Density = Shader.PropertyToID("_Density");
internal static readonly int _Start = Shader.PropertyToID("_Start");
internal static readonly int _End = Shader.PropertyToID("_End");
internal static readonly int _TempRT = Shader.PropertyToID("_TempRT");
}
private const string k_ShaderString = "Hidden/Post FX/Fog";
public override bool active => base.model.enabled && context.isGBufferAvailable && RenderSettings.fog && !context.interrupted;
public override string GetName()
{
return "Fog";
}
public override DepthTextureMode GetCameraFlags()
{
return DepthTextureMode.Depth;
}
public override CameraEvent GetCameraEvent()
{
return CameraEvent.AfterImageEffectsOpaque;
}
public override void PopulateCommandBuffer(CommandBuffer cb)
{
FogModel.Settings settings = base.model.settings;
Material material = context.materialFactory.Get("Hidden/Post FX/Fog");
material.shaderKeywords = null;
Color value = ((!GraphicsUtils.isLinearColorSpace) ? RenderSettings.fogColor : RenderSettings.fogColor.linear);
material.SetColor(Uniforms._FogColor, value);
material.SetFloat(Uniforms._Density, RenderSettings.fogDensity);
material.SetFloat(Uniforms._Start, RenderSettings.fogStartDistance);
material.SetFloat(Uniforms._End, RenderSettings.fogEndDistance);
switch (RenderSettings.fogMode)
{
case FogMode.Linear:
material.EnableKeyword("FOG_LINEAR");
break;
case FogMode.Exponential:
material.EnableKeyword("FOG_EXP");
break;
case FogMode.ExponentialSquared:
material.EnableKeyword("FOG_EXP2");
break;
}
RenderTextureFormat format = ((!context.isHdr) ? RenderTextureFormat.Default : RenderTextureFormat.DefaultHDR);
cb.GetTemporaryRT(Uniforms._TempRT, context.width, context.height, 24, FilterMode.Bilinear, format);
cb.Blit(BuiltinRenderTextureType.CameraTarget, Uniforms._TempRT);
cb.Blit(Uniforms._TempRT, BuiltinRenderTextureType.CameraTarget, material, settings.excludeSkybox ? 1 : 0);
cb.ReleaseTemporaryRT(Uniforms._TempRT);
}
}
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