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Merge pull request #63751 from clayjohn/physical_light_units
Implement Physical Light Units in Vulkan Renderers
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| <?xml version="1.0" encoding="UTF-8" ?> | ||
| <class name="CameraAttributes" inherits="Resource" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> | ||
| <brief_description> | ||
| Parent class for camera settings. | ||
| </brief_description> | ||
| <description> | ||
| Controls camera-specific attributes such as depth of field and exposure override. | ||
| When used in a [WorldEnvironment] it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own [CameraAttributes], including the editor camera. When used in a [Camera3D] it will override any [CameraAttributes] set in the [WorldEnvironment]. When used in [VoxelGI] or [LightmapGI], only the exposure settings will be used. | ||
| See also [Environment] for general 3D environment settings. | ||
| This is a pure virtual class that is inherited by [CameraAttributesPhysical] and [CameraAttributesPractical]. | ||
| </description> | ||
| <tutorials> | ||
| </tutorials> | ||
| <members> | ||
| <member name="auto_exposure_enabled" type="bool" setter="set_auto_exposure_enabled" getter="is_auto_exposure_enabled"> | ||
| If [code]true[/code], enables the tonemapping auto exposure mode of the scene renderer. If [code]true[/code], the renderer will automatically determine the exposure setting to adapt to the scene's illumination and the observed light. | ||
| </member> | ||
| <member name="auto_exposure_scale" type="float" setter="set_auto_exposure_scale" getter="get_auto_exposure_scale"> | ||
| The scale of the auto exposure effect. Affects the intensity of auto exposure. | ||
| </member> | ||
| <member name="auto_exposure_speed" type="float" setter="set_auto_exposure_speed" getter="get_auto_exposure_speed"> | ||
| The speed of the auto exposure effect. Affects the time needed for the camera to perform auto exposure. | ||
| </member> | ||
| <member name="exposure_multiplier" type="float" setter="set_exposure_multiplier" getter="get_exposure_multiplier"> | ||
| Multiplier for the exposure amount. A higher value results in a brighter image. | ||
| </member> | ||
| <member name="exposure_sensitivity" type="float" setter="set_exposure_sensitivity" getter="get_exposure_sensitivity"> | ||
| Sensitivity of camera sensors, measured in ISO. A higher sensitivity results in a brighter image. Only available when [member ProjectSettings.rendering/lights_and_shadows/use_physical_light_units] is enabled. When [member auto_exposure_enabled] this can be used as a method of exposure compensation, doubling the value will increase the exposure value (measured in EV100) by 1 stop. | ||
| </member> | ||
| </members> | ||
| </class> |
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| <?xml version="1.0" encoding="UTF-8" ?> | ||
| <class name="CameraAttributesPhysical" inherits="CameraAttributes" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> | ||
| <brief_description> | ||
| Physically-based camera settings. | ||
| </brief_description> | ||
| <description> | ||
| [CameraAttributesPhysical] is used to set rendering settings based on a physically-based camera's settings. It is responsible for exposure, auto-exposure, and depth of field. | ||
| When used in a [WorldEnvironment] it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own [CameraAttributes], including the editor camera. When used in a [Camera3D] it will override any [CameraAttributes] set in the [WorldEnvironment] and will override the [Camera3D]s [member Camera3D.far], [member Camera3D.near], [member Camera3D.fov], and [member Camera3D.keep_aspect] properties. When used in [VoxelGI] or [LightmapGI], only the exposure settings will be used. | ||
| The default settings are intended for use in an outdoor environment, tips for settings for use in an indoor environment can be found in each setting's documentation. | ||
| </description> | ||
| <tutorials> | ||
| </tutorials> | ||
| <methods> | ||
| <method name="get_fov" qualifiers="const"> | ||
| <return type="float" /> | ||
| <description> | ||
| Returns the vertical field of view that corresponds to the [member frustum_focal_length]. This value is calculated internally whenever [member frustum_focal_length] is changed. | ||
| </description> | ||
| </method> | ||
| </methods> | ||
| <members> | ||
| <member name="auto_exposure_max_exposure_value" type="float" setter="set_auto_exposure_max_exposure_value" getter="get_auto_exposure_max_exposure_value" default="10.0"> | ||
| The maximum luminance (in EV100) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing below a certain brightness, resulting in a cut off point where the scene will remain bright. | ||
| </member> | ||
| <member name="auto_exposure_min_exposure_value" type="float" setter="set_auto_exposure_min_exposure_value" getter="get_auto_exposure_min_exposure_value" default="-8.0"> | ||
| The minimum luminance luminance (in EV100) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing above a certain brightness, resulting in a cut off point where the scene will remain dark. | ||
| </member> | ||
| <member name="exposure_aperture" type="float" setter="set_aperture" getter="get_aperture" default="16.0"> | ||
| Size of the aperture of the camera, measured in f-stops. An f-stop is a unitless ratio between the focal length of the camera and the diameter of the aperture. A high aperture setting will result in a smaller aperture which leads to a dimmer image and sharper focus. A low aperture results in a wide aperture which lets in more light resulting in a brighter, less-focused image. Default is appropriate for outdoors at daytime (i.e. for use with a default [DirectionalLight3D]), for indoor lighting, a value between 2 and 4 is more appropriate. | ||
| Only available when [member ProjectSettings.rendering/lights_and_shadows/use_physical_light_units] is enabled. | ||
| </member> | ||
| <member name="exposure_shutter_speed" type="float" setter="set_shutter_speed" getter="get_shutter_speed" default="100.0"> | ||
| Time for shutter to open and close, measured in seconds. A higher value will let in more light leading to a brighter image, while a lower amount will let in less light leading to a darker image. | ||
| Only available when [member ProjectSettings.rendering/lights_and_shadows/use_physical_light_units] is enabled. | ||
| </member> | ||
| <member name="frustum_far" type="float" setter="set_far" getter="get_far" default="4000.0"> | ||
| Override value for [member Camera3D.far]. Used internally when calculating depth of field. When attached to a [Camera3D] as its [member Camera3D.attributes], it will override the [member Camera3D.far] property. | ||
| </member> | ||
| <member name="frustum_focal_length" type="float" setter="set_focal_length" getter="get_focal_length" default="35.0"> | ||
| Distance between camera lens and camera aperture, measured in millimeters. Controls field of view and depth of field. A larger focal length will result in a smaller field of view and a narrower depth of field meaning fewer objects will be in focus. A smaller focal length will result in a wider field of view and a larger depth of field meaning more objects will be in focus. When attached to a [Camera3D] as its [member Camera3D.attributes], it will override the [member Camera3D.fov] property and the [member Camera3D.keep_aspect] property. | ||
| </member> | ||
| <member name="frustum_focus_distance" type="float" setter="set_focus_distance" getter="get_focus_distance" default="10.0"> | ||
| Distance from camera of object that will be in focus, measured in meters. Internally this will be clamped to be at least 1 millimeter larger than [member frustum_focal_length]. | ||
| </member> | ||
| <member name="frustum_near" type="float" setter="set_near" getter="get_near" default="0.05"> | ||
| Override value for [member Camera3D.near]. Used internally when calculating depth of field. When attached to a [Camera3D] as its [member Camera3D.attributes], it will override the [member Camera3D.near] property. | ||
| </member> | ||
| </members> | ||
| </class> |
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| <?xml version="1.0" encoding="UTF-8" ?> | ||
| <class name="CameraAttributesPractical" inherits="CameraAttributes" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> | ||
| <brief_description> | ||
| Camera settings in an easy to use format. | ||
| </brief_description> | ||
| <description> | ||
| Controls camera-specific attributes such as auto-exposure, depth of field, and exposure override. | ||
| When used in a [WorldEnvironment] it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own [CameraAttributes], including the editor camera. When used in a [Camera3D] it will override any [CameraAttributes] set in the [WorldEnvironment]. When used in [VoxelGI] or [LightmapGI], only the exposure settings will be used. | ||
| </description> | ||
| <tutorials> | ||
| </tutorials> | ||
| <members> | ||
| <member name="auto_exposure_max_sensitivity" type="float" setter="set_auto_exposure_max_sensitivity" getter="get_auto_exposure_max_sensitivity" default="800.0"> | ||
| The maximum sensitivity (in ISO) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing below a certain brightness, resulting in a cut off point where the scene will remain bright. | ||
| </member> | ||
| <member name="auto_exposure_min_sensitivity" type="float" setter="set_auto_exposure_min_sensitivity" getter="get_auto_exposure_min_sensitivity" default="0.0"> | ||
| The minimum sensitivity (in ISO) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing above a certain brightness, resulting in a cut off point where the scene will remain dark. | ||
| </member> | ||
| <member name="dof_blur_amount" type="float" setter="set_dof_blur_amount" getter="get_dof_blur_amount" default="0.1"> | ||
| Sets the maximum amount of blur. When using physically-based blur amounts, will instead act as a multiplier. High values lead to an increased amount of bluriness, but can be much more expensive to calculate. It is best to keep this as low as possible for a given art style. | ||
| </member> | ||
| <member name="dof_blur_far_distance" type="float" setter="set_dof_blur_far_distance" getter="get_dof_blur_far_distance" default="10.0"> | ||
| Objects further from the [Camera3D] by this amount will be blurred by the depth of field effect. Measured in meters. | ||
| </member> | ||
| <member name="dof_blur_far_enabled" type="bool" setter="set_dof_blur_far_enabled" getter="is_dof_blur_far_enabled" default="false"> | ||
| Enables depth of field blur for objects further than [member dof_blur_far_distance]. Strength of blur is controlled by [member dof_blur_amount] and modulated by [member dof_blur_far_transition]. | ||
| </member> | ||
| <member name="dof_blur_far_transition" type="float" setter="set_dof_blur_far_transition" getter="get_dof_blur_far_transition" default="5.0"> | ||
| When positive, distance over which (starting from [member dof_blur_far_distance]) blur effect will scale from 0 to [member dof_blur_amount]. When negative, uses physically-based scaling so depth of field effect will scale from 0 at [member dof_blur_far_distance] and will increase in a physically accurate way as objects get further from the [Camera3D]. | ||
| </member> | ||
| <member name="dof_blur_near_distance" type="float" setter="set_dof_blur_near_distance" getter="get_dof_blur_near_distance" default="2.0"> | ||
| Objects closer from the [Camera3D] by this amount will be blurred by the depth of field effect. Measured in meters. | ||
| </member> | ||
| <member name="dof_blur_near_enabled" type="bool" setter="set_dof_blur_near_enabled" getter="is_dof_blur_near_enabled" default="false"> | ||
| Enables depth of field blur for objects closer than [member dof_blur_near_distance]. Strength of blur is controlled by [member dof_blur_amount] and modulated by [member dof_blur_near_transition]. | ||
| </member> | ||
| <member name="dof_blur_near_transition" type="float" setter="set_dof_blur_near_transition" getter="get_dof_blur_near_transition" default="1.0"> | ||
| When positive, distance over which blur effect will scale from 0 to [member dof_blur_amount], ending at [member dof_blur_near_distance]. When negative, uses physically-based scaling so depth of field effect will scale from 0 at [member dof_blur_near_distance] and will increase in a physically accurate way as objects get closer to the [Camera3D]. | ||
| </member> | ||
| </members> | ||
| </class> |
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