目录

光照模型

代码代码

还是从 Panel 代码入手

明显得，各种光照用了mask 做叠加（多选，左移进位)

设置 mask 之后，是在哪里注入debug呢？

同样地不管 fog 的开关，很快就找到 mask lit 开关的 debug 实现

分别看看各种光的应用

光照模型

明显区分了 mainlit, emission, global等光线

代码代码

还是从 Panel 代码入手

        internal void Reset()
        
            m_Settings.Clear();

            CommonSettings = Add(new DebugDisplaySettingsCommon());
            MaterialSettings = Add(new DebugDisplaySettingsMaterial());
            LightingSettings = Add(new DebugDisplaySettingsLighting());
            RenderingSettings = Add(new DebugDisplaySettingsRendering());
        

明显得，各种光照用了mask 做叠加（多选，左移进位)

/// <summary>
    /// Debug mode that allows selective disabling of individual lighting components.
    /// </summary>
    [GenerateHLSL, Flags]
    public enum DebugLightingFeatureFlags
    
        /// <summary>The debug mode is not active.</summary>
        None,
        /// <summary>Display contribution from global illumination.</summary>
        GlobalIllumination = 0x1,
        /// <summary>Display contribution from the main light.</summary>
        MainLight = 0x2,
        /// <summary>Display contribution from additional lights.</summary>
        AdditionalLights = 0x4,
        /// <summary>Display contribution from vertex lighting.</summary>
        VertexLighting = 0x8,
        /// <summary>Display contribution from emissive objects.</summary>
        Emission = 0x10,
        /// <summary>Display contribution from ambient occlusion.</summary>
        AmbientOcclusion = 0x20,
    

但，暂时怎么设置 mask 不明显

（之后再补上）

设置 mask 之后，是在哪里注入debug呢？

关键还在于：k_DebugLightingFeatureFlagsId

static readonly int k_DebugLightingFeatureFlagsId = Shader.PropertyToID("_DebugLightingFeatureFlags");

 // Lighting settings...
cmd.SetGlobalFloat(k_DebugLightingModeId, (int)LightingSettings.DebugLightingMode);
cmd.SetGlobalInteger(k_DebugLightingFeatureFlagsId, (int)LightingSettings.DebugLightingFeatureFlagsMask);

同样地不管 fog 的开关，很快就找到 mask lit 开关的 debug 实现

in DebuggingCommon.hlsl

bool IsLightingFeatureEnabled(uint bitMask)

    #if defined(DEBUG_DISPLAY)
    return (_DebugLightingFeatureFlags == 0) || ((_DebugLightingFeatureFlags & bitMask) != 0);
    #else
    return true;
    #endif

分别看看各种光的应用

（这次和DebugColor有点不同，确实是剔除光（分层）了。。。。。）

GI光

    if (IsLightingFeatureEnabled(DEBUGLIGHTINGFEATUREFLAGS_GLOBAL_ILLUMINATION))
    
        lightingColor += lightingData.giColor;
    

环境光

    if (IsLightingFeatureEnabled(DEBUGLIGHTINGFEATUREFLAGS_AMBIENT_OCCLUSION))
    
        bakedGI *= aoFactor.indirectAmbientOcclusion;