80 lines
2.9 KiB
C#
80 lines
2.9 KiB
C#
using UnityEngine.Rendering;
|
|
|
|
namespace UnityEngine.PostProcessing
|
|
{
|
|
public sealed class FogComponent : PostProcessingComponentCommandBuffer<FogModel>
|
|
{
|
|
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");
|
|
}
|
|
|
|
const string k_ShaderString = "Hidden/Post FX/Fog";
|
|
|
|
public override bool active
|
|
{
|
|
get
|
|
{
|
|
return model.enabled
|
|
&& context.isGBufferAvailable // In forward fog is already done at shader level
|
|
&& 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)
|
|
{
|
|
var settings = model.settings;
|
|
|
|
var material = context.materialFactory.Get(k_ShaderString);
|
|
material.shaderKeywords = null;
|
|
var fogColor = GraphicsUtils.isLinearColorSpace ? RenderSettings.fogColor.linear : RenderSettings.fogColor;
|
|
material.SetColor(Uniforms._FogColor, fogColor);
|
|
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;
|
|
}
|
|
|
|
var fbFormat = context.isHdr
|
|
? RenderTextureFormat.DefaultHDR
|
|
: RenderTextureFormat.Default;
|
|
|
|
cb.GetTemporaryRT(Uniforms._TempRT, context.width, context.height, 24, FilterMode.Bilinear, fbFormat);
|
|
cb.Blit(BuiltinRenderTextureType.CameraTarget, Uniforms._TempRT);
|
|
cb.Blit(Uniforms._TempRT, BuiltinRenderTextureType.CameraTarget, material, settings.excludeSkybox ? 1 : 0);
|
|
cb.ReleaseTemporaryRT(Uniforms._TempRT);
|
|
}
|
|
}
|
|
}
|