hzFishy's Game Dev Notes

Quality Preset & Scalabity settings

You can see what the engine does when you chose between Scalable and Maximum in the function FHardwareTargetingModule::GatherSettings. I don’t know if its the only place where the engine edit’s the .ini files using the selected Quality Preset.

Showing here only the differences between the two DefaultEngine.ini when creating a blank project in 5.4.4.

Scalable Desktop

[/Script/Engine.RendererSettings]
r.Mobile.ShadingPath=0
r.Mobile.AllowDeferredShadingOpenGL=False
r.Mobile.SupportGPUScene=False
r.Mobile.AntiAliasing=1
r.Mobile.FloatPrecisionMode=0
r.Mobile.AllowDitheredLODTransition=False
r.Mobile.VirtualTextures=False
r.DiscardUnusedQuality=False
r.AllowOcclusionQueries=True
r.MinScreenRadiusForLights=0.030000
r.MinScreenRadiusForDepthPrepass=0.030000
r.MinScreenRadiusForCSMDepth=0.010000
r.PrecomputedVisibilityWarning=False
r.TextureStreaming=True
Compat.UseDXT5NormalMaps=False
r.VirtualTextures=False
r.VT.EnableAutoImport=True
r.VirtualTexturedLightmaps=False
r.VT.AnisotropicFiltering=False
bEnableVirtualTextureOpacityMask=False
r.VT.TileSize=128
r.VT.TileBorderSize=4
r.vt.FeedbackFactor=16
WorkingColorSpaceChoice=sRGB
RedChromaticityCoordinate=(X=0.640000,Y=0.330000)
GreenChromaticityCoordinate=(X=0.300000,Y=0.600000)
BlueChromaticityCoordinate=(X=0.150000,Y=0.060000)
WhiteChromaticityCoordinate=(X=0.312700,Y=0.329000)
r.ClearCoatNormal=False
r.ReflectionCaptureResolution=128
r.ReflectionEnvironmentLightmapMixBasedOnRoughness=True
r.Lumen.HardwareRayTracing=False
r.Lumen.HardwareRayTracing.LightingMode=0
r.Lumen.TranslucencyReflections.FrontLayer.EnableForProject=False
r.Lumen.TraceMeshSDFs=1
r.Lumen.Reflections.HardwareRayTracing.Translucent.Refraction.EnableForProject=True
r.RayTracing=False
r.RayTracing.Shadows=False
r.RayTracing.UseTextureLod=False
r.PathTracing=True
r.GenerateMeshDistanceFields=True
r.DistanceFields.DefaultVoxelDensity=0.200000
r.Nanite.ProjectEnabled=True
r.AllowStaticLighting=True
r.NormalMapsForStaticLighting=False
r.ForwardShading=False
r.VertexFoggingForOpaque=True
r.SeparateTranslucency=True
r.TranslucentSortPolicy=0
TranslucentSortAxis=(X=0.000000,Y=-1.000000,Z=0.000000)
r.LocalFogVolume.ApplyOnTranslucent=False
xr.VRS.FoveationLevel=0
xr.VRS.DynamicFoveation=False
r.CustomDepth=1
r.CustomDepthTemporalAAJitter=True
r.PostProcessing.PropagateAlpha=0
r.DefaultFeature.Bloom=True
r.DefaultFeature.AmbientOcclusion=True
r.DefaultFeature.AmbientOcclusionStaticFraction=True
r.DefaultFeature.AutoExposure=False
r.DefaultFeature.AutoExposure.Method=0
r.DefaultFeature.AutoExposure.Bias=1.000000
r.DefaultFeature.LocalExposure.HighlightContrastScale=0.800000
r.DefaultFeature.LocalExposure.ShadowContrastScale=0.800000
r.DefaultFeature.MotionBlur=False
r.DefaultFeature.LensFlare=False
r.TemporalAA.Upsampling=True
r.AntiAliasingMethod=0
r.MSAACount=4
r.DefaultFeature.LightUnits=1
r.DefaultBackBufferPixelFormat=4
r.ScreenPercentage.Default=100.000000
r.ScreenPercentage.Default.Desktop.Mode=1
r.ScreenPercentage.Default.Mobile.Mode=0
r.ScreenPercentage.Default.VR.Mode=0
r.ScreenPercentage.Default.PathTracer.Mode=0
r.Shadow.UnbuiltPreviewInGame=True
r.StencilForLODDither=False
r.EarlyZPass=3
r.EarlyZPassOnlyMaterialMasking=False
r.Shadow.CSMCaching=False
r.DBuffer=True
r.ClearSceneMethod=1
r.VelocityOutputPass=0
r.Velocity.EnableVertexDeformation=2
r.SelectiveBasePassOutputs=False
bDefaultParticleCutouts=False
fx.GPUSimulationTextureSizeX=1024
fx.GPUSimulationTextureSizeY=1024
r.AllowGlobalClipPlane=False
r.GBufferFormat=1
r.MorphTarget.Mode=True
r.MorphTarget.MaxBlendWeight=5.000000
r.SupportSkyAtmosphere=True
r.SupportSkyAtmosphereAffectsHeightFog=True
r.SupportLocalFogVolumes=True
r.SupportCloudShadowOnForwardLitTranslucent=False
r.LightFunctionAtlas.Format=0
r.VolumetricFog.LightFunction=True
r.Deferred.UsesLightFunctionAtlas=False
r.SingleLayerWater.UsesLightFunctionAtlas=False
r.Translucent.UsesLightFunctionAtlas=False
r.Translucent.UsesIESProfiles=False
r.Translucent.UsesRectLights=False
r.GPUCrashDebugging=False
vr.InstancedStereo=False
r.MobileHDR=True
vr.MobileMultiView=False
r.Mobile.UseHWsRGBEncoding=False
vr.RoundRobinOcclusion=False
r.MeshStreaming=False
r.HeterogeneousVolumes=True
r.HeterogeneousVolumes.Shadows=False
r.Translucency.HeterogeneousVolumes=False
r.WireframeCullThreshold=5.000000
r.SupportStationarySkylight=True
r.SupportLowQualityLightmaps=True
r.SupportPointLightWholeSceneShadows=True
r.Shadow.TranslucentPerObject.ProjectEnabled=False
r.Water.SingleLayerWater.SupportCloudShadow=False
r.Substrate=False
r.Substrate.OpaqueMaterialRoughRefraction=False
r.Substrate.Debug.AdvancedVisualizationShaders=False
r.Material.RoughDiffuse=False
r.Material.EnergyConservation=False
r.OIT.SortedPixels=False
r.HairStrands.LODMode=True
r.SkinCache.CompileShaders=False
r.SkinCache.SkipCompilingGPUSkinVF=False
r.SkinCache.DefaultBehavior=1
r.SkinCache.SceneMemoryLimitInMB=128.000000
r.Mobile.EnableStaticAndCSMShadowReceivers=True
r.Mobile.EnableMovableLightCSMShaderCulling=True
r.Mobile.Forward.EnableLocalLights=1
r.Mobile.Forward.EnableClusteredReflections=False
r.Mobile.EnableNoPrecomputedLightingCSMShader=True
r.Mobile.AllowDistanceFieldShadows=True
r.Mobile.AllowMovableDirectionalLights=True
r.Mobile.EnableMovableSpotlightsShadow=False
r.GPUSkin.Support16BitBoneIndex=False
r.GPUSkin.Limit2BoneInfluences=False
r.SupportDepthOnlyIndexBuffers=True
r.SupportReversedIndexBuffers=True
r.Mobile.AmbientOcclusion=False
r.Mobile.DBuffer=False
r.GPUSkin.UnlimitedBoneInfluences=False
r.GPUSkin.AlwaysUseDeformerForUnlimitedBoneInfluences=False
r.GPUSkin.UnlimitedBoneInfluencesThreshold=8
DefaultBoneInfluenceLimit=(Default=0,PerPlatform=())
MaxSkinBones=(Default=65536,PerPlatform=(("Mobile", 256)))
r.Mobile.PlanarReflectionMode=0
r.Mobile.SupportsGen4TAA=True
bStreamSkeletalMeshLODs=(Default=False,PerPlatform=())
bDiscardSkeletalMeshOptionalLODs=(Default=False,PerPlatform=())
VisualizeCalibrationColorMaterialPath=/Engine/EngineMaterials/PPM_DefaultCalibrationColor.PPM_DefaultCalibrationColor
VisualizeCalibrationCustomMaterialPath=None
VisualizeCalibrationGrayscaleMaterialPath=/Engine/EngineMaterials/PPM_DefaultCalibrationGrayscale.PPM_DefaultCalibrationGrayscale
 
[/Script/HardwareTargeting.HardwareTargetingSettings]
DefaultGraphicsPerformance=Scalable
AppliedDefaultGraphicsPerformance=Scalable

Maximum Desktop

[/Script/Engine.RendererSettings]
r.Mobile.EnableNoPrecomputedLightingCSMShader=True
r.GenerateMeshDistanceFields=True
r.DefaultFeature.LocalExposure.HighlightContrastScale=0.8
r.DefaultFeature.LocalExposure.ShadowContrastScale=0.8
 
[/Script/HardwareTargeting.HardwareTargetingSettings]
DefaultGraphicsPerformance=Maximum
AppliedDefaultGraphicsPerformance=Maximum