A Viewport creates a different view into the screen, or a sub-view inside another viewport. Children 2D Nodes will display on it, and children Camera3D 3D nodes will render on it too.
[b]Note:[/b] When trying to store the current texture (e.g. in a file), it might be completely black or outdated if used too early, especially when used in e.g. [method Node._ready]. To make sure the texture you get is correct, you can await [signal RenderingServer.frame_post_draw] signal.
Returns whether the current [InputEvent] has been handled. Input events are not handled until [method set_input_as_handled] has been called during the lifetime of an [InputEvent].
This is usually done as part of input handling methods like [method Node._input], [method Control._gui_input] or others, as well as in corresponding signal handlers.
If [member handle_input_locally] is set to [code]false[/code], this method will try finding the first parent viewport that is set to handle input locally, and return its value for [method is_input_handled] instead.
Triggers the given [param event] in this [Viewport]. This can be used to pass an [InputEvent] between viewports, or to locally apply inputs that were sent over the network or saved to a file.
If [param in_local_coords] is [code]false[/code], the event's position is in the embedder's coordinates and will be converted to viewport coordinates. If [param in_local_coords] is [code]true[/code], the event's position is in viewport coordinates.
While this method serves a similar purpose as [method Input.parse_input_event], it does not remap the specified [param event] based on project settings like [member ProjectSettings.input_devices/pointing/emulate_touch_from_mouse].
Calling this method will propagate calls to child nodes for following methods in the given order:
- [method Node._input]
- [method Control._gui_input] for [Control] nodes
If an earlier method marks the input as handled via [method set_input_as_handled], any later method in this list will not be called.
Triggers the given [InputEvent] in this [Viewport]. This can be used to pass input events between viewports, or to locally apply inputs that were sent over the network or saved to a file.
If [param in_local_coords] is [code]false[/code], the event's position is in the embedder's coordinates and will be converted to viewport coordinates. If [param in_local_coords] is [code]true[/code], the event's position is in viewport coordinates.
While this method serves a similar purpose as [method Input.parse_input_event], it does not remap the specified [param event] based on project settings like [member ProjectSettings.input_devices/pointing/emulate_touch_from_mouse].
Calling this method will propagate calls to child nodes for following methods in the given order:
- [method Node._shortcut_input]
- [method Node._unhandled_input]
- [method Node._unhandled_key_input]
If an earlier method marks the input as handled via [method set_input_as_handled], any later method in this list will not be called.
If none of the methods handle the event and [member physics_object_picking] is [code]true[/code], the event is used for physics object picking.
Sets the number of subdivisions to use in the specified quadrant. A higher number of subdivisions allows you to have more shadows in the scene at once, but reduces the quality of the shadows. A good practice is to have quadrants with a varying number of subdivisions and to have as few subdivisions as possible.
The canvas transform of the viewport, useful for changing the on-screen positions of all child [CanvasItem]s. This is relative to the global canvas transform of the viewport.
Determines how sharp the upscaled image will be when using the FSR upscaling mode. Sharpness halves with every whole number. Values go from 0.0 (sharpest) to 2.0. Values above 2.0 won't make a visible difference.
To control this property on the root viewport, set the [member ProjectSettings.rendering/scaling_3d/fsr_sharpness] project setting.
If [code]true[/code], sub-windows (popups and dialogs) will be embedded inside application window as control-like nodes. If [code]false[/code], they will appear as separate windows handled by the operating system.
If [code]true[/code], this viewport will mark incoming input events as handled by itself. If [code]false[/code], this is instead done by the the first parent viewport that is set to handle input locally.
A [SubViewportContainer] will automatically set this property to [code]false[/code] for the [Viewport] contained inside of it.
See also [method set_input_as_handled] and [method is_input_handled].
The automatic LOD bias to use for meshes rendered within the [Viewport] (this is analogous to [member ReflectionProbe.mesh_lod_threshold]). Higher values will use less detailed versions of meshes that have LOD variations generated. If set to [code]0.0[/code], automatic LOD is disabled. Increase [member mesh_lod_threshold] to improve performance at the cost of geometry detail.
The multisample anti-aliasing mode for 2D/Canvas rendering. A higher number results in smoother edges at the cost of significantly worse performance. A value of 2 or 4 is best unless targeting very high-end systems. This has no effect on shader-induced aliasing or texture aliasing.
The multisample anti-aliasing mode for 3D rendering. A higher number results in smoother edges at the cost of significantly worse performance. A value of 2 or 4 is best unless targeting very high-end systems. See also bilinear scaling 3d [member scaling_3d_mode] for supersampling, which provides higher quality but is much more expensive. This has no effect on shader-induced aliasing or texture aliasing.
Sets scaling 3d mode. Bilinear scaling renders at different resolution to either undersample or supersample the viewport. FidelityFX Super Resolution 1.0, abbreviated to FSR, is an upscaling technology that produces high quality images at fast framerates by using a spatially aware upscaling algorithm. FSR is slightly more expensive than bilinear, but it produces significantly higher image quality. FSR should be used where possible.
To control this property on the root viewport, set the [member ProjectSettings.rendering/scaling_3d/mode] project setting.
Scales the 3D render buffer based on the viewport size uses an image filter specified in [member ProjectSettings.rendering/scaling_3d/mode] to scale the output image to the full viewport size. Values lower than [code]1.0[/code] can be used to speed up 3D rendering at the cost of quality (undersampling). Values greater than [code]1.0[/code] are only valid for bilinear mode and can be used to improve 3D rendering quality at a high performance cost (supersampling). See also [member ProjectSettings.rendering/anti_aliasing/quality/msaa_3d] for multi-sample antialiasing, which is significantly cheaper but only smooths the edges of polygons.
When using FSR upscaling, AMD recommends exposing the following values as preset options to users "Ultra Quality: 0.77", "Quality: 0.67", "Balanced: 0.59", "Performance: 0.5" instead of exposing the entire scale.
To control this property on the root viewport, set the [member ProjectSettings.rendering/scaling_3d/scale] project setting.
Sets the screen-space antialiasing method used. Screen-space antialiasing works by selectively blurring edges in a post-process shader. It differs from MSAA which takes multiple coverage samples while rendering objects. Screen-space AA methods are typically faster than MSAA and will smooth out specular aliasing, but tend to make scenes appear blurry.
Affects the final texture sharpness by reading from a lower or higher mipmap (also called "texture LOD bias"). Negative values make mipmapped textures sharper but grainier when viewed at a distance, while positive values make mipmapped textures blurrier (even when up close).
Enabling temporal antialiasing ([member use_taa]) will automatically apply a [code]-0.5[/code] offset to this value, while enabling FXAA ([member screen_space_aa]) will automatically apply a [code]-0.25[/code] offset to this value. If both TAA and FXAA are enbled at the same time, an offset of [code]-0.75[/code] is applied to this value.
[b]Note:[/b] If [member scaling_3d_scale] is lower than [code]1.0[/code] (exclusive), [member texture_mipmap_bias] is used to adjust the automatic mipmap bias which is calculated internally based on the scale factor. The formula for this is [code]log2(scaling_3d_scale) + mipmap_bias[/code].
To control this property on the root viewport, set the [member ProjectSettings.rendering/textures/default_filters/texture_mipmap_bias] project setting.
If [code]true[/code], uses a fast post-processing filter to make banding significantly less visible in 3D. 2D rendering is [i]not[/i] affected by debanding unless the [member Environment.background_mode] is [constant Environment.BG_CANVAS]. See also [member ProjectSettings.rendering/anti_aliasing/quality/use_debanding].
In some cases, debanding may introduce a slightly noticeable dithering pattern. It's recommended to enable debanding only when actually needed since the dithering pattern will make lossless-compressed screenshots larger.
If [code]true[/code], [OccluderInstance3D] nodes will be usable for occlusion culling in 3D for this viewport. For the root viewport, [member ProjectSettings.rendering/occlusion_culling/use_occlusion_culling] must be set to [code]true[/code] instead.
[b]Note:[/b] Enabling occlusion culling has a cost on the CPU. Only enable occlusion culling if you actually plan to use it, and think whether your scene can actually benefit from occlusion culling. Large, open scenes with few or no objects blocking the view will generally not benefit much from occlusion culling. Large open scenes generally benefit more from mesh LOD and visibility ranges ([member GeometryInstance3D.visibility_range_begin] and [member GeometryInstance3D.visibility_range_end]) compared to occlusion culling.
Enables Temporal Anti-Aliasing for this viewport. TAA works by jittering the camera and accumulating the images of the last rendered frames, motion vector rendering is used to account for camera and object motion.
[b]Note:[/b] The implementation is not complete yet, some visual instances such as particles and skinned meshes may show artifacts.
If [code]true[/code], the viewport will use the primary XR interface to render XR output. When applicable this can result in a stereoscopic image and the resulting render being output to a headset.
The texture [i]must[/i] use a lossless compression format so that colors can be matched precisely. The following VRS densities are mapped to various colors, with brighter colors representing a lower level of shading precision:
[codeblock]
- 1x1 = rgb(0, 0, 0) - #000000
- 1x2 = rgb(0, 85, 0) - #005500
- 2x1 = rgb(85, 0, 0) - #550000
- 2x2 = rgb(85, 85, 0) - #555500
- 2x4 = rgb(85, 170, 0) - #55aa00
- 4x2 = rgb(170, 85, 0) - #aa5500
- 4x4 = rgb(170, 170, 0) - #aaaa00
- 4x8 = rgb(170, 255, 0) - #aaff00 - Not supported on most hardware
- 8x4 = rgb(255, 170, 0) - #ffaa00 - Not supported on most hardware
- 8x8 = rgb(255, 255, 0) - #ffff00 - Not supported on most hardware
This quadrant will be split 256 ways and used by up to 256 shadow maps. Unless the [member positional_shadow_atlas_size] is very high, the shadows in this quadrant will be very low resolution.
This quadrant will be split 1024 ways and used by up to 1024 shadow maps. Unless the [member positional_shadow_atlas_size] is very high, the shadows in this quadrant will be very low resolution.
Use bilinear scaling for the viewport's 3D buffer. The amount of scaling can be set using [member scaling_3d_scale]. Values less then [code]1.0[/code] will result in undersampling while values greater than [code]1.0[/code] will result in supersampling. A value of [code]1.0[/code] disables scaling.
Use AMD FidelityFX Super Resolution 1.0 upscaling for the viewport's 3D buffer. The amount of scaling can be set using [member scaling_3d_scale]. Values less then [code]1.0[/code] will be result in the viewport being upscaled using FSR. Values greater than [code]1.0[/code] are not supported and bilinear downsampling will be used instead. A value of [code]1.0[/code] disables scaling.
Use 2× Multisample Antialiasing. This has a moderate performance cost. It helps reduce aliasing noticeably, but 4× MSAA still looks substantially better.
Use 8× Multisample Antialiasing. This has a very high performance cost. The difference between 4× and 8× MSAA may not always be visible in real gameplay conditions. Likely unsupported on low-end and older hardware.
Use fast approximate antialiasing. FXAA is a popular screen-space antialiasing method, which is fast but will make the image look blurry, especially at lower resolutions. It can still work relatively well at large resolutions such as 1440p and 4K.
Objects are displayed semi-transparent with additive blending so you can see where they are drawing over top of one another. A higher overdraw means you are wasting performance on drawing pixels that are being hidden behind others.
Draws the screen-space ambient occlusion texture instead of the scene so that you can clearly see how it is affecting objects. In order for this display mode to work, you must have [member Environment.ssao_enabled] set in your [WorldEnvironment].
Draws the screen-space indirect lighting texture instead of the scene so that you can clearly see how it is affecting objects. In order for this display mode to work, you must have [member Environment.ssil_enabled] set in your [WorldEnvironment].
Colors each PSSM split for the [DirectionalLight3D]s in the scene a different color so you can see where the splits are. In order, they will be colored red, green, blue, and yellow.
Disables textures repeating. Instead, when reading UVs outside the 0-1 range, the value will be clamped to the edge of the texture, resulting in a stretched out look at the borders of the texture.
Enables the texture to repeat when UV coordinates are outside the 0-1 range. If using one of the linear filtering modes, this can result in artifacts at the edges of a texture when the sampler filters across the edges of the texture.
