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VFB Menu
The V-Ray Frame Buffer menu holds the main frame buffer commands. Some of the options are also available in the VFB Toolbar for quick access.
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Menu
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Menu Options
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File
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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.
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Batch Image Processing
Input folder – Specifies a path to load images from.
Output folder – Specifies a path for the output images.
Layer preset – Specifies a path to a layer tree corrections preset.
Output filenames suffix – Specifies the suffix added to the output image filenames.
Overwrite existing – Enables overwrite of existing files with the same name in the output folder.
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Render
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Start interactive rendering – Starts IPR.
Abort rendering – Stops the current rendering.
Render – Starts rendering.
IPR Debug Shading – This option is available only while an interactive render is running. It provides shading modes that highlight any imperfections in the render, making it ideal for testing and debugging. Clicking on the same mode a second time disables Debug Shading.
Isolate Selected – Isolates the selected materials and objects in the scene. Do not select materials and objects simultaneously, as that might produce inaccurate results.
Isolate Locked Selection – Isolates the selected materials and objects that have the Protection tag applied to them.
Lighting – Shades the entire scene with a blank material to showcase the lighting.
Ambient Occlusion – Shades everything in white, only darkening areas with ambient occlusion.
Wireframe – Displays all objects in the scene in wireframe mode.
Normals – Displays the normals of all objects in the scene.
UVs – Displays the UVs of all objects in the scene.
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Image
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Follow mouse – Renders the closest buckets 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;
Follow mouse (locked) – Locks the bucket (or sampling) starting point.
Copy current channel to clipboard – Copies the current channel to the clipboard. It can then be pasted wherever you need.
Duplicate to host frame buffer – Copies the currently loaded render from the VFB to the Cinema 4D Picture Viewer.
Clear image – Clears the contents of the frame buffer. This is useful when starting a new render to prevent confusion with the previous image.
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View
Display color space –Specifies the color space, in which the image is displayed.
None – Does not specify a color space;
sRGB – Displays the image in sRGB color space;
OCIO – Displays the image in a color space loaded from an OCIO configuration file;
ICC – Displays the image in a color space loaded from an ICC configuration file;
Gamma 2.2 – Displays the image in Gamma 2.2 color space.
Zoom VFB – Zooms in/out the rendered image in the VFB.
Zoom 50% – Zooms out to 50%;
Zoom 100% – Zooms to 100%. Alternatively, double-click in the VFB with the left mouse button;
Zoom 150% – Zooms in to 150%.
Zoom to fit – Zooms the current image to fit in the VFB. If Render Region is active – zooms to the region.
Channels – Chooses which channels to see.
View red channel – Displays the red channel;
View green channel – Displays the green channel;
View blue channel – Displays the blue channel;
Switch to alpha channel – Displays the alpha channel;
Monochromatic mode –Displays the image in monochromatic mode.
Test resolution – Enables test resolution in VFB. The submenu allows different percentages of the render resolution to be set as the test resolution. You can choose between 10%, 25%, 50%, 75%, 110%, 125% and 150%. Please note that this only affects V-Ray and does not affect the native Cinema 4D test resolution setting found under Cinema 4D's Render Settings.
Color clamping – Opens the color clamping submenu options:
Force color clamping – Forces color clamping;
View clamped colors – Displays the clamped colors.
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.
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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.
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Options
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VFB Toolbar
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Specifies RGB values. Click on the arrow to open a context menu with the available option.
None – Does not specify the RGB value.
HSV – Specifies the Hue, Saturation and Value of the pixel under the current mouse position.
Web – Specifies the HEX of the pixel under the current mouse position.
8bit – Specifies the 8bit color palette of the pixel under the current mouse position.
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Save current channel – Saves the current channel to an image file format;
Save all image channels to separate files – Saves all the render elements into separate files;
Save all image channels to single file – Saves the image into a single multi-channel EXR or .vrimg file.
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Enables/disables test resolution in the VFB. Press and hold to bring up the submenu to select the percentage of the render resolution to set as the test resolution.
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Render History
The V-Ray Frame Buffer 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 in this section). 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. You can switch between comparison modes by holding down on this button or by using the hotkeys.
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Edit note – Allows you to add a text comment to the image; the comment appears below the image. Set A – Sets the render as A image for comparison. Set B – Sets the render as B image for comparison. Load to VFB – Loads the selected image in the VFB (same as double-clicking on the image). Delete – Deletes the selected image from history. The image is moved to the system's Recycle Bin and can be restored from there if needed. Load layers – Loads the layer tree preset of the selected image. Load V-Ray settings – Loads the V-Ray settings used for the saved render. Compare V-Ray settings – Opens the Compare V-Ray settings dialogue, where you can compare the render setups of saved renders. Image Info – Opens a window containing detailed information about the image, including, but not limited to, Aperture, Camera Far and Near Range, File Path, V-Ray version, render time. Keep in mind that the camera values are saved in system units. Also, the vrayrevison info displayed in the list is not related to the saved .vrimg file but to the current V-Ray build installed for Cinema 4D. Copy scene path – Copies the full path to the scene. Copy project path – Copies the full path to the project. Reload history – Re-reads the history image list. This may be needed if the history folder is updated outside of Cinema 4D(e.g. from another Cinema 4D session).
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Layers
The 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 (
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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;
Background – Adds a background color correction layer;
Render Element – Selects a render element from your image that you can use in compositing. This is only available when the Source layer is set to Composite;
Constant – Adds a solid color that can be used to achieve an effect on another layer (for example to multiply by the constant);
Exposure – Adds an Exposure color correction layer;
White Balance – Adds a White Balance color correction layer;
Hue/Saturation – Adds a Hue/Saturation color correction layer;
Color Balance – Adds a Color Balance color correction layer;
Curves – Adds a Curves color correction layer;
Lookup Table – A Lookup Table layer allows loading a LUT file for color transformations;
Filmic Tonemap – Contains different types of mapping curves and gamma corrections. Also allows selection of a color space.
For more information, see the Layers page.
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UI Paths
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VFB 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 quick access.
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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. You can also drag and drop an image directly into the VFB to upload it. Batch image processing – Allows processing of multiple .vrimg files with the same layer tree changes at the same time. Upload image to Chaos Collaboration – Opens the Chaos Collaboration window, allowing you to upload and share your render. | Batch Image Processing
Input folder – Specifies a path to load images from. Output folder – Specifies a path for the output images. Layer preset – Specifies a path to a layer tree corrections preset. Output filenames suffix – Specifies the 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. Stop rendering – Stops the ongoing rendering but performs all post-rendering tasks such as post-effects, denoising, or image output saving. Abort rendering – Cancels the current render. The output image is not saved. Render – Starts rendering. IPR Debug Shading – This option is available only while an interactive render is running. It provides shading modes that highlight any imperfections in the render, making it ideal for testing and debugging. Clicking on the same mode a second time disables Debug Shading. Isolate Selected – Isolates the selected materials and objects in the scene. Do not select materials and objects simultaneously, as that might produce inaccurate results. | |
Image | Follow mouse – Renders the closest buckets 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. It can then be pasted wherever you need. Duplicate to host frame buffer – Copies the currently loaded render from the VFB to the Cinema 4D Picture Viewer. 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; Test resolution – Enables test resolution in VFB. The submenu allows different percentages of the render resolution to be set as the test resolution. You can choose between 10%, 25%, 50%, 75%, 110%, 125% and 150%. Please note that this only affects V-Ray and does not affect the native Cinema 4D test resolution setting found under Cinema 4D's Render Settings. 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 and Layers. | |
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 whether color and display corrections are applied (RGB) or not (Raw) when showing the sampled pixel values at the current mouse pointer position. |
| 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 8-bit 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 Alpha channel. | |
| Displays the red channel. | |
| Displays the green channel. | |
| Displays the blue 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; |
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| 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 buckets 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. | |
| Enables/disables test resolution in the VFB. Press and hold to bring up the submenu to select the percentage of the render resolution to set as the test resolution. |
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| Allows you to render regions in the VFB. Region render – Select a rectangular area of the VFB to render. Polygon region render – Make a custom path to create a region of the VFB to render. See the Render Region section for more information. |
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| Starts and stops IPR Debug Shading. Press and hold the icon to select the Debug Shading mode. See the debug shading modes in the VFB Menu section. | |
| Starts IPR. | |
| Stops the current rendering. Press and hold to bring up the submenu and select a variation: Abort rendering – Cancels the current render. When the render is canceled, the output image is not saved. |
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| Starts a production render. | |
Render History
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The V-Ray Frame Buffer 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 in this section). History files are stored as .vrimg files in a user-specified folder. Render history settings can be configured in the VFB Settings window.
| Enables or disables image A/B vertical comparison. Select images A and B from the render history. You can switch between comparison modes by holding down on this button or by using the hotkeys. |
| Enables or disables image A/B horizontal comparison. Select images A and B from the render history. You can switch between comparison modes by holding down on this button or by using the hotkeys. |
| Enables or disables image A/B/C/D comparison. Select images A, B, C, and D from the render history. You can switch between comparison modes by holding down on this button or by using the hotkeys. |
| 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. |
| A search field where you can filter the images based on the scene paths and notes. |
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Layers
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The 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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Each layer has a context menu. Right-click to display 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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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.
Region render – Renders rectangular regions in the VFB.
Polygon region render – Allows creation and use of multiple custom regions in the VFB at once. The regions can be moved around, deleted, or edited by their vertices. To create a new polygon region, hold and drag the left mouse button and click again to add a vertice. Press ESC / right-mouse button to cancel the vertex creation. If you cease the region creation before closing the path, the
Saving a region to an .exr file saves only the render region, and the rest of the frame is rendered black.
Polygon Region Context Menu
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Stats
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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Render Region
Region rendering can be used in both IPR and Production modes to isolate only part of the frame for rendering.
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VFB Interactive Options
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These options are available when Interactive rendering is enabled. They can be accessed by right-clicking anywhere in the render region.
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