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This page provides information on the New V-Ray Frame Buffer and its features.
Overview
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VFB
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V-Ray menu > Show VFB |
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Menu
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The V-Ray Frame Buffer menu holds the main frame buffer commands. Some of the options are also available in the VFB toolbar for a quick access.
Menu | Menu Options | |
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File | Save current channel – Saves the currently loaded channel to an image file format. Save all image channels to separate files – Saves all the render elements to separate files. Save all image channels to single file – Saves the image to a single multi-channel EXR or .vrimg file. Load image – Opens an image file to be previewed in the V-Ray Frame Buffer. Batch image processing – Allows processing of multiple .vrimg files with the same layer tree changes at the same time. | Save all image channels to separate files options Save VFB color corrections to render elements – When enabled, all color corrections are saved to the render channels (as opposed to only the RGB and effectsResult channels). |
Batch image processing Input folder – Specifies a path to start images. Output folder – Specifies a path for the output images. Layer preset – Specifies a layer tree corrections preset. Output filenames suffix – Specifies a suffix added to the output image filenames. Overwrite existing – Enables overwrite of existing files with the same name in the output folder. | ||
Render | Start interactive rendering – Starts IPR. Abort rendering – Stops the current rendering. Render – Starts rendering. | |
Image | Follow mouse – Renders the closest bucket found to the mouse pointer, when using the bucket image sampler. If the progressive sampler is used, V-Ray samples the closest pixels to the mouse pointer. Follow mouse – Drag the mouse over the VFB while rendering to change what part of the image is sampled first; Copy current channel to clipboard – Copies the current channel to the clipboard. Clear image – Clears the contents of the frame buffer. This is useful when starting a new render to prevent confusion with the previous image. | |
View | Display color space –Specifies the color space, in which the image is displayed. None – Does not specify a color space; Zoom VFB – Zooms in/out the rendered image in the VFB. Zoom 50% – Zooms out to 50%; Channels – Chooses which channels to see. View red channel – Displays the red channel; Color clamping – Opens the color clamping submenu options: Force color clamping – Forces color clamping; Use pixel aspect – Enables visualization of the pixel aspect ratio. Flip – Mirrors the image in the VFB. This is a view only option, the flipped image cannot be exported. This function is only active while holding the menu button or the hotkey for the corresponding type of flip. The effect does not interrupt interactive rendering. Flip horizontally – Mirrors the image horizontally. Flip vertically – Mirrors the image vertically. Panorama View – Shows the image in 360° view. Show History – Shows the History panel. Show Layers – Shows the Layers panel. | |
Options | VFB settings – Opens the VFB Settings window where you can adjusts settings for Render View, Render Region, History, Layers, and Shortcuts. |
VFB Toolbar
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This dropdown gives access to render elements rendered for the scene. The selected render element is displayed in the VFB. By default, the RGB color and Alpha render elements are available. Any additional render elements that have been added to the scene also appear in the drop-down. | ||
Displays the coordinates of the mouse pointer. | ||
Specifies the sampled area size. Click on the arrow to open a context menu with the available sampled area sizes: 1x1, 3x3, 5x5, and 7x7. | ||
Specifies the color of the pixel under the current mouse position before applying any color corrections. | ||
Displays the RGB pixel values at the current mouse pointer position before applying any color corrections. | ||
Specifies RGB values. Click on the arrow to open a context menu with the available option. None – Does not specify the RGB value. | ||
Displays the Hue, Saturation and Value of the pixel under the current mouse position when HSV is selected. | ||
Displays the HEX of the pixel under the current mouse position when Web is selected. | ||
Displays the 8bit color palette of the pixel under the current mouse position when 8bit is selected. |
Locks the mouse pointer coordinates and displays information for the selected pixel. | ||
Shows corrected colors. | ||
Shows the V-Ray log. | ||
Displays the red channel. | ||
Displays the green channel. | ||
Displays the blur channel. | ||
Displays the Alpha channel. | ||
Saves the image to disk. Press and hold the icon to bring up the submenu: Save current channel – Saves the current channel to an image file format; | ||
Clears the contents of the frame buffer. This is useful when starting a new render to prevent confusion with the previous image. | ||
Renders the closest bucket found to the mouse pointer, when using the bucket image sampler. If the progressive sampler is used, V-Ray samples the closest pixels to the mouse pointer. With this option enabled, you can right-click on the image and select Lock bucket starting point to lock the bucket (or sampling) starting point. | ||
Allows you to render regions in the VFB. See the New V-Ray Frame BufferRender Region section for more information. | ||
Starts IPR. If there is more than one camera in the scene, hold left mouse button to display a list of the available cameras. | ||
Stops the current rendering. | ||
Starts rendering. If there is more than one camera in the scene, hold left mouse button to display a list of the available cameras. |
Render History
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The V-Ray VFB keeps a history of previously rendered images, and lists each with a number, thumbnail, and textual details in the Render history panel. Up to four images can be called from the history to be compared in the VFB (as shown below). History files are stored as .vrimg files in a user-specified folder. Render history settings can be configured in the VFB Settings window.
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Enables or disables image A/B vertical comparison. Select images A and B from the render history. | |
Enables or disables image A/B horizontal comparison. Select images A and B from the render history. | |
Enables or disables image A/B/C/D comparison. Select images A, B, C and D from the render history. | |
Saves the current image from the VFB to the render history. The image is placed at the top of the render history list. | |
Loads the selected image from the render history to the VFB. | |
Removes the selected image from the render history. |
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The keyboard keys from 1 to 9 can be used to quickly load the first 9 images from the history to the VFB. |
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The History panel with notes/name, resolution/time, and shortcut key info displayed. Right-clicking on an image in the VFB history brings up a pop-up menu with some useful options.
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Manually saved .vrimg files can also be added to the History folder, but they need to be saved with all image channels in one .vrimg file to keep the complete image info. |
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Layers
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The redesigned V-Ray Frame Buffer includes a suite of color corrections and tools for adjusting the image. The tools are added as layers and displayed in a layer tree. You can enable or disable a particular tool using the visibility icon () to the left of its name.
For more information on using the Layers, see the Layers page.
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Creates a layer. Multiple layers of the same type can be added. Folder – Allows grouping multiple layers; For more information, see the Layers page. | |
Deletes the selected layer(s). | |
Saves a layer tree preset. | |
Loads a layer tree preset. | |
Quick access to custom layer presets. You must set the path to it in the VFB Settings. | |
Undo various actions related to layers such as create, delete, reorder or modify a layer. | |
Redo various actions related to layers such as create, delete, reorder or modify a layer. |
Each layer has a context menu. Right-click to display it:
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Reset | Resets all changes done to the selected layer. |
Save | Saves the layer as a preset. |
Load | Loads a preset for the selected layer. |
Delete | Deletes the selected layer. |
Save as LUT | Bakes all the color corrections to a LUT file. |
New Layer | Creates a new layer. |
Duplicate | Duplicates the selected layer. |
Blend Modes | Specifies how the selected layer blends with the result from all layers below it. |
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Stats
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The V-Ray Frame Buffer allows monitoring of different statistics and information about your scene in the Stats panel. The exact contents of the Stats changes depending on the scene, the rendering mode (interactive vs production, bucket vs progressive) and others.
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Right-click to display a context menu, allowing you to copy the Stats values. |
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Log
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The Log panel provides messages about the render process. Verbosity control is available and you can filter the type of messages shown in the Log: All, Error Only, Error & Warnings, or Error, Warnings & info. Additional options are available when you click on the Open options button:
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Ctr+F opens a search field at the bottom of the Log tab. |
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VFB Shortcuts
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These shortcuts navigate through the VFB image. Please note that the VFB window must have the current focus for the shortcuts to have effect:
Description | Shortcut Key | ||
Global | Show/hide history | H | |
Show/hide only layers tree | P | ||
Show/hide whole right panel | Ctr+L | ||
Toggle Full Screen | F11 | ||
VFB Settings | S | ||
History/Render View | Enable history A/B/C/D compare mode | E | |
Enable history A/B horizontal compare mode | Q | ||
Enable history A/B vertical compare mode | W | ||
Load the respective image from the new VFB history (1...9) | 1; 2; 3; 4; 5; 6; 7; 8; 9 | ||
Layers/Property Panel | Redo | Ctr+Y | |
Undo | Ctr+Z | ||
Layers | Delete a layer | Del | |
Message Log | Close Search | Esc | |
Find in Log | Ctr+F | ||
Find next | Return | ||
Find previous | Shift+Return | ||
Render View | Abort rendering | Esc | |
Copy current channel to clipboard | Ctr+C | ||
Flip horizontally | M | ||
Flip vertically | Shift+M | ||
Load image | Ctr+O | ||
Lock pixel info coordinates | L | ||
Pan image (up, left, down, right) | Up; Left; Down; Right (arrow keys) | ||
Switch to Alpha channel | A | ||
View blue channel | B | ||
View green channel | G | ||
View next channel | PgDown | ||
View previous channel | PgUp | ||
View red channel | R | ||
Zoom 100% | * ; Double-click left button | ||
Zoom in | + / = | ||
Zoom out | -/_ | ||
Zoom to fit | F | ||
Zoom in the rendered image | Ctrl+Shift+Left click | ||
Zoom out the rendered image | Ctrl+Shift+Right click | ||
Symmetric render region resizing | Alt+resize |
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The shortcut keys can be modified in the VFB's options from VFB > Options > Shortcuts tab > Edit hotkeys. |
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Render Region
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Region rendering can be used in both IPR and Production modes to isolate only part of the frame for rendering. Usually, when a render region is used, you would like to save the whole frame instead of the region only.
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Saving multi-channel .exr files writes just the render region data in the file by default but it can be set to save full frame instead. In order to save the render region with the rest of the frame, set its exr data window option to Whole Image. Saving multi-channel .exr files from VFB > Save all channels to single file saves the render region when it is enabled from the VFB. This happens even if you have selected a render region on top of the already rendered frame, without an actual region used in the rendering process. To save the full frame from VFB, disable the render region.
Find more info at VFB Render Region.
Notes
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