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This page provides information about the real-time viewer V-Ray Vision.

 

Overview


V-Ray Vision is a real-time viewer that can be used in any project set up for V-Ray rendering. It is a lightweight “game engine” (rasterizer) that does not currently use any type of ray-tracing. Due to its speed, it can serve as a powerful alternative viewport that provides better lighting and material representation as well as camera animation playback controls.
In addition to its main function as a viewer, V-Ray Vision can produce spherical panoramas and quick output of both still frames and animation sequences. It comes with its very own auto-exposure, tonemapping, and color correction options.

When V-Ray Vision is launched, it automatically loads the current SketchUp project and starts an interactive session. This means that while it is running, a live link is established that sends to the viewer all updates made to the SketchUp scene.
Stopping the live link, by either clicking the SketchUp toolbar's V-Ray Vision button or any of V-Ray's Render buttons, ends the connection but does not clear the loaded scene. To stop V-Ray Vision, close its window.

In addition to loading scenes directly from SketchUp, V-Ray Vision is able to load .vrscene files directly. In this case, in order for the modifications to be displayed, the source file has to be reloaded.

See the V-Ray Vision tutorial or the Courseware page for more information.

 

 

 

 

UI Paths


 

 

 ||Extensions|| > V-Ray > V-Ray Live Link > Start V-Ray Vision

 

 ||V-Ray for SketchUp Toolbar|| > Start V-Ray Vision

 

 


V-Ray Vision Menu


 

  

Indicates whether the live link with V-Ray is currently active.
When the circles are connected, scene updates from V-Ray are displayed in the viewer.

Click on the button to open the Live link parameters panel:

Sync Camera – Sync vision camera with the host application viewport.
Sync Sun – Sync vision sun with the host application.

Selects a .vrscene file to be loaded in the viewer.

Shows or hides the information panel and the shortcuts.

Resolution mode. Click on the button to cycle between the following modes:

Fit in Window – Matches the window size and aspect.
Match Scene Aspect
– Matches the aspect ratio from the V-Ray render settings. The size of the image is still determined by the window size.

Camera Navigation Mode. Click on the button to cycle between the following modes:

Orbit mode – enables the camera movement based on orbit, pan, and zoom manipulations.
Fly mode – the keyboard W, A, S, D, Q, E buttons are used for movement while mouse left-click + drag can be used for looking around. Holding down Space temporarily increases the movement speed.

Enables/disables Auto Exposure.1

Opens the Settings panel.

Opens the Save Options panel.


Enables the Standalone Application Export.2

Packages and exports the project as a standalone application.
The application can then be used for exploring, presenting or interacting with the project.
No V-Ray license is required for running the app.

 

 

Toolbar Menu Hide Option – An arrow appears upon hovering at the top part of the V-Ray Vision window. This allows for the toolbar to be hidden or expanded.

 

 

Settings


Enable Proxy LOD – Enables the LOD switching for Proxy Mesh assets. The full mesh is visible up close, whereas the proxy preview mesh is displayed in distance. Note that both share materials.

High quality Cosmos Assets – Displays a high quality version of each Cosmos asset close to the camera. Cosmos assets have multiple levels of detail and by default Vision loads lighter meshes for increased performance. When this option is enabled the highest level will be used when the camera is close to the object. Note that enabling this option might have major impact on performance and loading time depending on the assets used. The scene will be automatically reloaded when the option is changed which might take a while depending on the project's complexity.

Shadows Quality – Controls the quality of Sun, Directional, Omni and Spot lights. From the drop-down you can choose from:

Low – Low quality shadow map filtering is used. Shadow map size is decreased during scene interactions.
Medium – Medium quality shadow map filtering is used. Soft shadows are disabled.
High – High quality shadow map filtering is used. Soft shadows are supported. Changing the Sun size affects the shadow softness.

Temporal Anti-aliasingEnables a higher quality anti-aliasing method. Note that this is a compute expensive option and needs multiple frames to achieve good-looking results. 

Auto Exposure1 – Enables auto exposure. Note that when enabled, if there are sizeable very dark or light portions of the buffer (e.g. completely black background surrounding a model), they may produce an exaggerated exposure value adjustment.

EV Compensation – Multiplies the exposure value of the camera or the value calculated by the Auto Exposure (when active). This option can store two independent values based on whether Auto Exposure is active.

Fly Mode – Changes the view navigation mode. Use the W, A, S, D, Q, E keys on the keyboard to move around. Holding down Space temporarily increases the movement speed. Hold the Left Mouse Button to look around

Fly Speed (m/s) – The movement speed measured in meters per second. Only has an effect in Fly mode.

Mouse Sensitivity – Changes the mouse speed when looking around in Fly Mode.

Smooth Movement Delay – The time it takes the camera to gradually cease after being moved during Fly Mode. Calculated in seconds.

Automatic IBL Sun – Automatically adds a directional light based on the brightest spot in an HDR image. The option has no effect if the project Sun is enabled. It is not recommended to enable it if there is no single distinct bright spot in the image used for lighting.

Ambient Light Mode Enables the ambient lighting mode. This mode can be used to remove the blue sky tint from interior renders. When enabled, the project's environment will remain visible in the background but will no longer affect the diffuse indirect illumination and the reflections. An ambient white/gray color will be used as indirect environment. Note that the state of this parameter will not be saved with the project and has to be manually set. 

Ambient Light Intensity Controls the intensity of the ambient lighting. Note that the value of this parameter will not be saved with the project and has to be manually set. 

 

Ambient Light Intensity value between 100 and 200 is sufficient for interior renders when using Sun and Sky.

 

 



Color Corrections 


Tonemapping Curve – Specifies the type of tonemapping applied to the image.

Disabled
ACES Curve

Exposure – Controls the post-exposure value.

Contrast – Controls the post-contrast amount ranging from -100 to 100.

SaturationControls the post-contrast amount ranging from -100 to 100.

Temperature – Controls the post color temperature value ranging from -100 to 100.

Tint Controls the post color tint value ranging from -100 to 100.

Reset – Resets all color corrections values to 0.

Load – Loads color corrections preset file.

Save – Saves the color corrections as a .visioncc file that can be loaded later.

 

 


 

Output


Output Mode - Specifies the type of the exported image. Note that VR Cubemap output in 6 separate files is not available for video export.

Image - Exports a still image.
Image sequence - Exports a sequence of images.
Video - Exports a single video file.

Camera Type

Standard – Uses a standard pinhole camera.
VR Spherical Panorama – Uses a spherical panorama to save the image.
VR Cubemap 6x1 – A cubic/box camera with the cube side arranged in a single row.
VR Cubemap 6 images – A cubic/box camera with the cube sides saved as separate images.

Note that in Image sequence and Video modes only Standard camera and VR Spherical Panorama projection are supported. Some screen-space effects are disabled in Video mode to avoid artifacts.

File - Specifies the output file path.

Image Format - Specifies the output image file type.

Resolution Mode

From Vision Window - The window size determines the output image size.
From Project - The image size specified in the host application or the V-Ray scene determines the output image size.

Output Resolution - The final output image resolution. Note that the size multiplier value is also take into account.

Size Multiplier - Multiplier for the base resolution. Note that there is a hard limit of 8192px along the long image size to avoid video memory issues.

Animation FPS - Controls the number of frames per second when exporting sequences.

Frame Delay - Specifies the number of frames that each animation frame is rendered for. Some effects need more than one frame to be resolved to final quality. For example, the Temporal Anti-aliasing benefits from longer delays.

Export – Exports a still image if Animation is disabled. Exports an image sequence or video if Animation is enabled.

 

 

 

Shortcuts


These shortcuts navigate through V-Ray Vision.

 

Shortcut

Description

Ctrl + Space or Ctrl + O

Opens a .vrscene file.

Ctrl + Backspace or Ctrl + N

Clears the scene.

TabChanges the camera navigation mode.
Left-click

In Orbit mode, it allows to orbit.

In Fly mode, it allows looking around.

Right-click or Scroll

In Orbit mode, it allows zooming.

In Fly mode, it allows looking around.

Middle-click

In Orbit mode, it moves the camera left and right.

In Fly mode, it allows looking around.

W, A, S, DIn Fly mode, allow for moving around.
Q, EIn Fly mode, allow for moving up or down.
SpaceIn Fly mode, it temporarily increases the movement speed.
Ctr + '+'In Fly Mode, it increases the movement speed.
Ctr + '-' In Fly Mode, it decreases the movement speed.
CResets the camera.
F12 Shows or hides the toolbar.
Shift + Left-click

Moves the Sun.

Up/Down – Altitude
Left/Right – Azimuth

Shift + Right-clickUp/Down – Changes the sun intensity.
Shift + Middle-clickUp/Down – Changes the camera exposure.
F5Resets the sun position and the lighting changes so to match the original scene state.

 

 

FAQ


Does V-Ray 5 include Vision?

Yes, Vision is integrated in V-Ray 5 for SketchUp. It can be launched directly from the main V-Ray toolbar.

What is the difference between Vision and Chaos Vantage?

How do you see both engines develop in the future?

V-Ray Vision is a feature of V-Ray for SketchUp, Rhino and Revit, while Vantage is a standalone application that can import and render V-Ray data. The technologies used differ quite significantly as well.

Vision is a rasterizer, a game engine meant to be used as a real-time scene viewer. It can also output final images or animations when the quality is sufficient for the project presentation.

Vantage is a real-time ray-tracer which makes it a lot more powerful in some regards. The lighting quality as well as reflections, refractions and other complex effects are calculated with high accuracy. Heavy models (in terms of polygonal count) are also not a problem for Vantage. Also note that Vantage requires a DXR compatible GPU (NVIDIA RTX only), while Vision runs on any GPU that supports DirectX 11 or 12 and Shader Model 5.0 (both NVIDIA and AMD cards can be used).

A common design shared between Vision and Vantage is that they visualize standard V-Ray Lights, materials and other effects. There is no need to modify your scene in order to use one of the engines. Future plans include Vision to be extended in terms of its presentation capabilities, V-Ray effects support and lighting quality while keeping the high framerate a priority.

Does V-Ray Vision work on macOS?

Yes. Make sure you use V-Ray 5.1 or a more recent V-Ray version and launch Vision from the main V-Ray toolbar.

What is the reason for lighting and material differences between Vision and the production V-Ray render engine?

• The technology used in Vision (rasterization) is fast but limited in quality and number of effects that can be supported.
• Most of the common material parameters used in V-Ray are supported in Vision. Some are still unsupported and hence you’ll see some differences in the way surfaces appear.
• Vision is also still not capable of evaluating the global illumination in the scene. As a result closed interior spaces would be illuminated incorrectly in most cases. Calculating many light bounces is required for better results.
• Chaos' main goal with Vision is to give a real-time experience keeping a high framerate. Vision is in active development, so the supported features are subject to change.

 

 

Footnotes


1- Note that when Auto Exposure is enabled, sizeable very dark or light portions of the buffer (e.g. completely black background surrounding a model), might produce an exaggerated exposure value adjustment.

2- To successfully open a standalone executable Vision file on Apple M1 systems, make sure to enable the 'Open using Rosetta' option from the file's info window.

  • V-Ray Vision is part of V-Ray for SketchUp and does not require additional licensing.
  • V-Ray Vision requires hardware capable of running DirectX 11 or DirectX 12 and Shader Model 5.0
  • Scenes with Chaos Cosmos assets can be rendered in V-Ray Vision.
  • Temporal Anti-aliasing is disabled when spherical panorama images are exported.
  • Sun and camera animations from Grasshopper can be rendered in Vision from manually exported .vrscene files. Note that object animations are currently unsupported.
  • The Always face camera option of SketchUp components is disregarded during Interactive rendering and Live Link.