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光源参数

This article contains parameters common for the Omni, Projected, and World light sources, Environment Probe, and Voxel Probe. Each light source also has unique parameters, which are described in the corresponding articles. Note that not all the parameters described in this article are available for each type of the light source.本文包含Omni, ProjectedWorld光源,Environment ProbeVoxel Probe通用的参数。每个光源还具有唯一的参数,这些参数在相应的文章中进行了介绍。请注意,并非本文介绍的所有参数都可用于每种类型的光源。

Light Settings灯光设置#

Common Settings常用设定#

Mode

Mode that defines rendering of the light source. It also affects rendering of shadows from the light source, and defines the impact of the light source on the light baking process.定义光源渲染的模式。它也会影响阴影渲染来自光源,并定义光源对光源的影响轻度烘烤过程。

  • Dynamic — the light source provides direct real-time lighting only. It is turned off while light baking is being calculated. Only dynamic shadows are rendered.Dynamic —光源仅提供直接的实时照明。在计算轻度烘烤时将其关闭。仅渲染动态阴影。
  • Static — the light source contributes to light baking and remains enabled all the time providing the direct real-time lighting. Shadow types rendered in this case are defined by Shadow Mode (or Shadow Cascade Mode for World Light).Static —光源有助于光烘焙,并始终保持启用状态,以提供直接的实时照明。在这种情况下渲染的阴影类型由Shadow Mode定义(对于World Light,则定义为Shadow Cascade Mode)。
Shadow Mask The shadow mask controls rendering of a shadow cast by an object lit by the light source.荫罩控制由光源照明的对象投射的阴影的渲染。
Viewport Mask For the light to be rendered, its viewport mask should match the camera's viewport mask.对于要渲染的灯光,其视口蒙版应与摄影机的视口蒙版匹配。视口蒙版
Color Mode

Color calculation mode for the light source. The following mode are available:光源的颜色计算模式。可以使用以下模式:

Color Color of the light in the RGBA format. By default, the light is white.
Color of the light in the RGBA format. By default, the light is white.
Color Filter Color multiplier for the light source color (calculated using the color temperature value). This can be used to imitate colored glass. The parameter is available only when the Temperature color mode is set.光源颜色的颜色倍增器(使用色温值计算)。可以用来模仿有色玻璃。该参数仅在Temperature时可用色彩模式设置好了。
Temperature

Light source temperature used for light color calculation. The maximum value is 40000.用于光源颜色计算的光源温度。最大值为40000

Temperature = 1000温度= 1000
Temperature = 40000温度= 40000
Intensity

Multiplier for the light color used to control color intensity. The higher the value, the brighter the light is.用于控制颜色强度的浅色乘数。值越高,光线越亮。

  • The minimum value of 1 corresponds to the least saturated light color.最小值1对应于最小的饱和光颜色。
  • The maximum value of 100 equals the most bright and intense color.100的最大值等于最明亮和最强烈的颜色。
Intensity = 7强度= 7
Intensity = 12强度= 12
Lux Intensity of the light color (as perceived by the human eye) in lux. In UNIGINE, all light sources have the intensity of 1 by default, which is equal to 100000 lux.以勒克斯为单位的浅色强度(如人眼所见)。在UNIGINE中,所有光源都具有强度默认情况下为1,等于100000 lux。

Attenuation Settings衰减设定#

Power

Light attenuation power used to simulate light intensity gradual fading. This parameter determines how fast the intensity decreases up to the attenuation distance set for the light source.光衰减功率用于模拟光强度逐渐衰减。此参数确定强度降低到为光源设置的衰减距离的速度。

  • If the attenuation power is set to 0 or close to it, the edge between illuminated and non-illuminated areas will be sharp.如果将衰减功率设置为0或接近0,则照明区域和非照明区域之间的边缘将很锐利。
  • Increasing the value up to the maximum of 1 will render softly dispersed light at the non-illuminated areas border.增加值达到最大1将在非照明区域边界渲染轻声分散光。
LightOmni power = 0.001LightOmni功率= 0.001
LightOmni power = 0.5LightOmni功率= 0.5
LightOmni power = 1LightOmni功率= 1
LightProj power = 0.001LightProj功率= 0.001
LightProj power = 0.5LightProj功率= 0.5
LightProj power = 1LightProj功率= 1
Distance

Distance from the light source shape, at which the light source doesn't illuminate anything. In other words, this parameter determines the size of the area illuminated by the light source.距光源的距离形状,光源不照亮任何东西。换句话说,此参数确定光源照射的区域的大小。

Distance = 1距离= 1
Distance = 1.5距离= 1.5

Shape Settings形状设定#

Type

Shape of the light source. The following shapes are available:光源的形状。可以使用以下形状:

Point shape点形
Sphere shape球体形状
Capsule shape胶囊形状
Rectangle shape矩形形状

By using this parameter, you can create an area light that illuminates objects in different directions at once. Besides, a light source of each shape provides a physically correct speck on illuminated surfaces.通过使用此参数,您可以创建一个区域光,该光可以一次照亮不同方向上的对象。此外,每种形状的光源都会在照明表面上提供物理上正确的斑点。

注意
A light source of the rectangular shape produces the light and the speck in a form of a rounded rectangle.矩形的光源以圆角矩形的形式产生光和斑点。
Radius Radius of the spherical, capsule-shaped or rectangular light source.球形,胶囊形或矩形光源的半径。
Length Length of the capsule-shaped or rectangular light source.胶囊状或矩形光源的长度。
Height Height of the rectangular light source.矩形光源的高度。

Distance Visibility Settings距离可见性设置#

Light Distance at which the light source starts fading. If the distance is set to inf, the source is always rendered.光源开始衰减的距离。如果距离设置为inf,则始终渲染源。
Shadow Distance up to which the casted shadows completely fade out.投射阴影完全消失的距离。
Fade Distance at which the light gradually disappears. This parameter enables to render the light with decreasing radiance after the Light distance is past.光线逐渐消失的距离。使用此参数可以在经过Light距离后以降低的辐射率渲染光。

Rendering Settings渲染设置#

Water Indicates whether to render the light source on the water surface or not.指示是否在水面上渲染光源。
Transparent Indicates whether to render the light source on the transparent surfaces or not.指示是否在透明表面上渲染光源。

Shadow Settings阴影设置#

Enabled

Toggles rendering of shadows from the light source on and off.切换光源的阴影渲染。

Shadows from Light Omni enabled (the left cube) and disabled (the right cube)来自Light Omni的阴影已启用(左侧多维数据集)和已禁用(右侧多维数据集)
Mode

Is available when the Static light mode is enabled. Two shadow modes are available:启用Static灯光模式时可用。有两种阴影模式可用:

  • Mixed. Shadows from surfaces with both static and dynamic shadow mode are rendered as follows: the dynamic shadow map is merged with the static depth texture and the result is rendered.Mixed。静态和动态表面上的阴影阴影模式渲染如下:动态阴影贴图与静态阴影贴图合并深度纹理并呈现结果。
  • Static. Only shadows from surfaces with the static shadow mode enabled are rendered. These shadows are stored in the depth texture.Static。仅带有静态表面的阴影阴影模式启用。这些阴影存储在深度纹理

For fine-tuning static light and shadows, see the optimization recommendations.要微调静态光和阴影,请参见优化建议

Depth Texture The R32F texture that stores the shadow map: a 2D texture array for the World and Omni light sources, or a 2D texture for the Projected light source.存储阴影贴图的R32F纹理:用于WorldOmni光源的2D纹理数组,或用于Projected光源的2D纹理。
Resolution

Size of the shadow map that defines the shadow quality.定义阴影质量的阴影贴图的大小。

  • The higher the resolution, the smoother and true to life the result is.分辨率越高,结果越平滑,逼真。
  • The lower the resolution, the more blocky and jagged the shadow outline appears.分辨率越低,阴影轮廓越显得块状和锯齿状。
Shadow resolution = 64阴影分辨率= 64
Shadow resolution = 512阴影分辨率= 512
注意
A shadow map is a 32-bit texture (in case of Light Omni, it's a 2D texture array ), and higher resolution significantly increases memory consumption. Moreover, heavy 4K shadow maps for lights with Mixed shadow mode enabled may significantly affect performance due to blending of baked and dynamicshadow maps.阴影贴图是32位纹理(在Light Omni的情况下,它是2D纹理数组),而更高的分辨率会显着增加内存消耗。此外,启用Mixed阴影模式的灯光的重4K阴影贴图可能会由于混合烘焙和动态阴影贴图而严重影响性能.
Bias

Shadow bias that is used to correct inexact shadowing of the scene objects. It controls the depth offset added to the current depth value stored in the shadow map. Such offset is adaptively calculated taking into account the slope angle of the light source, its resolution, and the distance to the light source at shadow map application.阴影偏差,用于校正场景对象的不精确阴影。它控制添加到阴影贴图中存储的当前深度值的深度偏移。考虑到光源的倾斜角度,其分辨率以及在阴影贴图应用中到光源的距离,可以自适应地计算这种偏移。

  • If the shadow acne appears, the bias value should be increased. This procedure eliminates the self-shadowing effect, as the points will appear closer to light source when compared to the map depth value.如果出现暗疮痤疮,则应增加偏压值。此过程消除了自阴影效应,因为与地图深度值相比,这些点将看起来更靠近光源。
  • If the bias value is set too high, the shadow will look detached from the object casting it (see the 3rd picture below).如果偏置值设置得太高,阴影将看起来与投射阴影的对象分离(请参见下面的第三张图片)。
Bias = 0; Normal bias = 1
Bias = 4; Normal bias = 1
Bias = 30; Normal bias = 1
Normal bias

Shadow bias that is achieved by shifting the surface on which the shadow falls. The surface is shifted along normals stored in the normal map.通过移动阴影落在其上的表面而获得的阴影偏差。曲面沿法线贴图中存储的法线移动。

Normal bias = 0; Bias = 1
Normal bias = 2; Bias = 1

Depending on the normal map of the surface, the shadow may differ for the same values of Normal Bias.根据表面的法线贴图,对于相同的Normal Bias值,阴影可能会有所不同。

Normal bias = 2
Normal bias = 2
Filter Mode

Filtering mode to be used to reduce the stair-step effect for soft shadows making the edges smoother.用于减少柔和阴影的阶梯效果以使边缘更平滑的滤镜模式。

  • Globalfiltering mode selected globally in the Settings window is to be used for shadows.Global全局选择的过滤模式Settings窗口中将用于阴影。
  • Disabled — filtering for shadows is disabled, the stair-step effect is clearly seen at the edges of shadows.Disabled —禁用阴影过滤,在阴影边缘清楚地看到阶梯效果。
  • Low, Medium, High, Ultra — filtering quality modes from the lightest to the heaviest one, which best reduces the stair-step effect but has a more significant impact on performance.Low, Medium, High, Ultra —从最轻到最重的质量模式进行过滤,这可以最大程度地减少阶梯效应,但对性能的影响更大。

Filter Filtering intensity for the selected mode. The higher the value the less noticeable the stair-step effect at the edges of shadows will be.所选模式的过滤强度。值越高,阴影边缘的阶梯效果越不明显。
Penumbra Mode

Quality mode to be used for penumbra rendering. This mode enables simulation of real-world shadows by keeping sharp contact shadows closer to the base and softening the farther the shadow stretches away.用于半影渲染的质量模式。通过使尖锐的接触阴影靠近底部并柔化阴影延伸得越远,此模式可以模拟真实世界的阴影。

  • Globalquality mode selected globally in the Settings window is to be used for penumbra rendering.Global全局选择的质量模式在“设置”窗口中将用于半影渲染。
  • Disabled — penumbra rendering is disabled, shadow edges are crisp and sharp (no soft shadows at all).Disabled —禁用半影渲染,阴影边缘清晰明快(完全没有柔和阴影)。
  • Low, Medium, High, Ultra — quality modes from the lowest to the best one, which has a more significant impact on performance.Low, Medium, High, Ultra —从最低到最佳的质量模式,这对性能有更大的影响。

Penumbra

Intensity of penumbra for the selected mode:所选模式的半影强度:

  • Low values correspond to sharper shadow edges.较低的值对应于较锐利的阴影边缘。
  • Higher values increase penumbra size.较高的值会增加半影的大小。

Screen Space Shadow Settings屏幕空间阴影设置#

注意
Enable the Screen Space Shadows feature in the Shadows Settings.Shadows Settings中启用Screen Space Shadows功能。
Enabled

Enables or disables screen space shadows from the light source.启用或禁用光源的屏幕空间阴影。

Screen Space Shadows from Light Omni on (the left cube) and off (the right cube). Shadows are disabled.屏幕空间阴影从Light Omni启用(左侧多维数据集)和禁用(右侧多维数据集)。阴影被禁用。
Number of Rays

Number of rays used in screen space ray tracing. The higher the number of rays, the more accurate the computation of pixel shading is.屏幕空间光线跟踪中使用的光线数。光线数量越多,像素阴影的计算越准确。

Number of Rays = 1
Number of Rays = 15
Number of Steps

Number of steps each ray traces. The higher the number of steps, the more accurate the computation of pixel shading is.每个射线跟踪的步数。步骤数越多,像素阴影的计算越准确。

Number of Steps = 4; Number of Rays = 1
Number of Steps = 32; Number of Rays = 1
Noise Ray

Ray tracing dispersion. The higher the noise, the more chaotic the direction of rays is.光线追踪色散。噪声越高,光线的方向越混乱。

Noise Ray = 0.5
Noise Ray = 0
Noise Step

Dispersion of steps. The higher the noise, the more scattering the steps are.分散步骤。噪声越高,台阶越分散。

Noise Step = 0.5; Noise Ray = 0.5
Noise Step = 0; Noise Ray = 0.5

Depending on the value of the Noise Ray parameter, the shadow may differ for the same values of Noise Step.根据值噪音射线参数,对于相同的Noise Step值,阴影可能会有所不同。

Noise Step = 0.5; Noise Ray = 0
Noise Step = 0; Noise Ray = 0
Near Step Size

Length of each step used in ray-traced shadows within Near Step Size Distance.Near Step Size Distance范围内的光线跟踪阴影中使用的每个步骤的长度。

  • Low values cause the closest pixels to shade.较低的值会导致最接近的像素被遮挡。
  • Higher values lengthen the shadow spreading.较高的值会延长阴影扩散。
  • Too high values can provoke shadow gaps.太高的值会引起阴影间隙。
Step Size = 0.5
Step Size = 20
Far Step Size Length of each step used in ray-traced shadows (see the description above) starting from Far Step Size Distance.光线跟踪阴影中使用的每个步骤的长度(请参见描述以上)从Far Step Size Distance开始。
Near Step Size Distance Distance from the camera, in units. Up to this distance, Near Step Size is used for screen-space shadows.距相机的距离(以单位为单位)。在此距离之前,Near Step Size用于屏幕空间阴影。
Far Step Size Distance Distance from the camera, in units. After this distance, Far Step Size is used for screen-space shadows. For the space between Near Step Size Distance and Far Step Size Distance, the step size interpolates from Near Step Size to Far Step Size.距相机的距离(以单位为单位)。在此距离之后,将Far Step Size用于屏幕空间阴影。对于Near Step Size DistanceFar Step Size Distance之间的空间,步长从Near Step Size插值到Far Step Size
Near Threshold

Threshold value for Near Step Size. This value defines the limit of samples passing the screen-space shadowing.Near Step Size的阈值。此值定义通过屏幕空间阴影的样本的限制。

  • Low values let pass more samples which causes the shading of inappropriate pixels.较低的值会使更多的样本通过,从而造成不适当像素的阴影。
  • Higher values can also cause inaccurate shading by limiting appropriate samples.较高的值也会通过限制适当的样本来导致不正确的阴影。
Threshold = 0
Threshold = 1
Threshold = 4
Far Threshold Threshold value (see the description above) for Far Step Size.阈值(请参阅描述以上)的Far Step Size
Near Threshold Distance Distance from the camera, in units. Up to this distance, Near Threshold is used. 距相机的距离(以单位为单位)。直到此距离,使用Near Threshold
Far Threshold Distance Distance from the camera, in units. After this distance, Far Threshold is used for screen-space shadows. For the space between Near Threshold Distance and Far Threshold Distance, the threshold value interpolates from Near Threshold to Far Threshold.距相机的距离(以单位为单位)。在此距离之后,将Far Threshold用于屏幕空间阴影。对于Near Threshold DistanceFar Threshold Distance之间的空间,阈值从Near Threshold插值到Far Threshold
Softness

Size of the blur applied to the shadow edge.应用于阴影边缘的模糊大小。

  • Low softness values corresponds to the crisp and sharp shadow edges.低的柔度值对应于清晰的阴影边缘。
  • Higher softness values serve to accentuate the effect of soft indirect lighting.较高的柔度值可增强柔和间接照明的效果。
Softness = 0
Softness = 0.5
Noise Translucent

Makes translucent shadows smoother by adding noise. The higher the value the more intense and noticeable the noise is.通过添加噪点使半透明阴影更平滑。值越高,噪声越强烈和明显。

注意
This option affects performance, so use it only in case it noticeably improves the result.此选项会影响性能,因此仅在明显改善结果的情况下使用它。
View Bias This parameter can be used to create an effect of fuzziness for vegetation (e.g. leaves of saintpaulia).该参数可用于为植被(例如非洲堇的叶子)产生模糊感。

Lens Flares Settings镜头光晕设置#

Lens Flares simulate the effect of lights refracting inside camera lens. They are used to represent very bright lights or to add more atmosphere to your scene. The settings described below are used per-light, you can also use the lens flares camera effect, which is applied to all lights and bright objects (e.g. having an emissive material with high intensity assigned).Lens Flares模拟光线在相机镜头内部折射的效果。它们用于代表非常明亮的灯光或为场景增加气氛。如下所述的设置用于每灯,您也可以使用镜头光晕相机效果,适用于所有灯光和明亮的物体(例如,具有发光材料分配高强度)。

Lens Flares are rendered as billboards, each associated with a part of a single texture and having a set of parameters, that determine its appearance and behavior. So, you can customize and fine tune your lens flares to fit your needs.镜头光晕呈现为广告牌,每个都与一个单一纹理并有一套参数,它决定了它的外观和行为。因此,您可以自定义和微调您的镜头光晕以适应您的需求。

注意
This feature is available only for: Light Omni, Light Projected and Light World.此功能仅适用于:Light Omni, Light ProjectedLight World

Enabled

Enables or disables lens flares from the light source. By default this effect is disabled.启用或禁用来自光源的镜头光晕。默认情况下,此效果是禁用的。

注意
The maximum number of lights on the scene for which the per-light flares will be rendered is 32.每个光耀斑将被渲染的场景中的最大灯光数量为32
Texture

A texture used to render billboards representing lens flares. The default texture is shown in the image below. For each billboard you can specify UV coordinates within this texture to determine its appearance. You can set your own texture, that contains the appearance for all the billboards to be used.用于渲染的纹理广告牌代表镜头光晕。下图显示了默认纹理。您可以为每个广告牌指定UV坐标在此纹理中确定其外观。您可以设置自己的纹理,其中包含要使用的所有广告牌的外观。

Occlusion Fade

Lens flare occlusion fade value for the cases when the light source becomes occluded by an object. By the value of 0.0f, lens flares disappear abruptly, as the light source becomes occluded by an object. If 1.0f is set, lens flares will fade out gradually.当光源被物体遮挡时,镜头眩光遮挡褪色值。通过0.0f的值,当光源被物体遮挡时,镜头光晕会突然消失。如果设置了1.0f,则镜头光晕将逐渐消失。

注意
Transparent objects are currently treated as opaque ones (i.e. they won't occlude flares).透明对象当前被视为不透明对象(即它们不会遮盖耀斑)。
Occlusion Fade Border Lens flare occlusion fade value for the cases when the light source becomes occluded by the edges of the screen. By the value of 0.0f, lens flares disappear abruptly, as the light source becomes occluded by the edges of the screen. If 1.0f is set, lens flares will fade out gradually.当光源被屏幕边缘遮挡时,镜头眩光遮挡褪色值。值0.0f会使镜头光晕突然消失,因为光源被屏幕边缘遮住了。如果设置了1.0f,则镜头光晕将逐渐消失。
Position Offset

An offset of the center of lens flares from the world position of the light source.镜头光斑中心与光源的世界位置的偏移。

注意
This parameter is not available for Light World此参数不适用于Light World
Position Offset = (0.0, 0.0, 0.0)
Position Offset = (2.0, -3.0, 0.0)
Use Light Color When enabled, the lens flares will have the same color as the light source.启用后,镜头光晕将具有与光源相同的颜色。

Lens Flares Billboards Settings镜头光晕广告牌设置#

Each flare is represented by a separate billboard, The default number of billboards is 30, but you can change it if necessary by adding, removing, or cloning selected billboards in the list via the corresponding buttons.每个耀斑由一个单独的广告牌表示。广告牌的默认数量为30,但您可以根据需要通过使用相应按钮在列表中添加,删除或克隆选定的广告牌来进行更改。

As you select a billboard in the list, its parameters become available for editing in the fields below.在列表中选择广告牌时,其参数可在以下字段中进行编辑。

注意
You can enable visualization of lens flare billboards via Helpers -> Show Wireframe.您可以通过Helpers -> Show Wireframe启用镜头光晕广告牌的可视化。
Color

Color multiplier for the selected billboard. Texture colors will be multiplied by this value. By default the color is white.所选广告牌的颜色倍增器。质地颜色将乘以该值。默认情况下,颜色为白色。

Size

This parameter controls the size of the selected billboard.此参数控制所选广告牌的大小。

Size = 1.5
Size = 5
Intensity

Multiplier for the billboard color used to control color intensity. The higher the value, the brighter the billboard is.广告牌颜色的乘数,用于控制颜色强度。值越高,广告牌越亮。

Intensity = 1
Intensity = 5
Offset

Offset determines the distance between the light source and the billboard along the vector oriented from the light source to the screen center. The lower the absolute value is, the closer to the light source the billboard will be. Negative values indicate that the distance is measured in the opposite direction.偏移量确定了光源和广告牌之间沿从光源到屏幕中心的方向的矢量之间的距离。绝对值越低,广告牌将越靠近光源。负值表示沿相反方向测量距离。

Offset = 0.3偏移= 0.3
Offset = 0.9偏移= 0.9
Offset Scale

Determines how the billboard changes its scale depending on the distance from the light source. As the offset from the light source increases:确定广告牌如何根据距光源的距离更改其比例。作为抵消从光源增加:

  • Values less than 1.0f will make the billboard shrink.小于1.0f的值会使广告牌缩小。
  • Values greater than 1.0f will make the billboard grow.大于1.0f的值将使广告牌增长。
Offset Scale= 1.0偏移比例= 1.0
Offset Scale = 4.0偏移比例= 4.0
Lower Left X X coordinate of the lower left corner of the selected billboard in the lens flares texture, in the range [0.0, 1.0], e.g., the value equal to 0.5 corresponds to the middle of the texture.所选广告牌左下角的X坐标镜头光晕纹理在[0.0, 1.0]范围内,例如,等于0.5的值对应于纹理的中间。
Lower Left Y Y coordinate of the lower left corner of the selected billboard in the lens flares texture, in the range [0.0, 1.0], e.g., the value equal to 0.5 corresponds to the middle of the texture.所选广告牌左下角的Y坐标镜头光晕纹理在[0.0, 1.0]范围内,例如,等于0.5的值对应于纹理的中间。
Upper Right X X coordinate of the upper right corner of the selected billboard in the lens flares texture, in the range [0.0, 1.0], e.g., the value equal to 0.5 corresponds to the middle of the texture.所选广告牌右上角的X坐标镜头光晕纹理在[0.0, 1.0]范围内,例如,等于0.5的值对应于纹理的中间。
Upper Right Y Y coordinate of the upper right corner of the selected billboard in the lens flares texture, in the range [0.0, 1.0], e.g., the value equal to 0.5 corresponds to the middle of the texture.所选广告牌右上角的Y坐标镜头光晕纹理在[0.0, 1.0]范围内,例如,等于0.5的值对应于纹理的中间。
Rotate Enables or disables rotation of the lens flare billboard. When enabled the top of the billboard will always face the center of the screen.启用或禁用镜头光晕广告牌的旋转。启用后,广告牌的顶部将始终面向屏幕中心。
最新更新: 2021-05-20
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