Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

This page provides an overview of the V-Ray Frame Buffer.

 

Floatingpagetoc

 

Overview

...

Section
Column
width45%

In addition to rendering to the Maya® Render View, V-Ray has a V-Ray specific frame buffer, which has some additional capabilities:

Fancy Bullets
typecircle
  • View all render elements in a single window and switch between them easily.
  • Keeps the image in full 32-bit floating point format.
  • Perform color corrections on the rendered image.
  • Choose the order in which the buckets are rendered.
  • Store a list of recently rendered images and switch between them easily.
  • Apply lens effects to the rendered image.
  • The ability to load progressive resumable files (.vrprog ) and the V-Ray .vrimg file format.

 

To use the V-Ray VFB, enable the Use V-Ray VFB check box under the Render View rollout in the Common tab of the Render Settings window.

To control the V-Ray Frame Buffer programmatically (with MEL), see the Controlling the VFB Programmatically page.

Column
width5%

 

Column
width50%


The V-Ray frame buffer with its render history and color correction windows docked

...

This drop-down 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 will also appear in the drop-down.

This part of the toolbar sets the currently selected channel, as well as the preview mode. Choose which channels to see with the help of the buttons. You can also view the rendered image in monochromatic mode.

The RGB Button switches the current channel to RGB color by default. When effects are applied, such as the VRayDenoiser or Lens Effects, the button will toggle between the effectsResult channel and RGB color channel.

The "Switch to alpha channel" button toggles between the RGB color and alpha channel.

Image Modified
Saves the image into a single file. If a multi-channel type file is used (.exr, .vrimg) all the render elements will be saved in the same file.
Image Modified
Saves all the render elements into separate files.
Image Modified
Opens an image file to be previewed in the V-Ray Frame Buffer.
Image Modified
Clears the contents of the frame buffer. Sometimes helpful when starting a new render to prevent confusion with the previous image.
Image Modified
Copies the current V-Ray frame buffer to the Maya Render View.
Image Modified

Forces V-Ray to render the closest bucket found to the mouse pointer, when using the bucket sampler. If the progressive sampler is used, V-Ray samples the closest pixels next to the mouse pointer. Drag the mouse over the V-Ray frame buffer while rendering to change what part of the image is done first. You can turn this on and of on-the-fly while rendering.

Right-click on the rendered image and select "Lock bucket starting point" to lock it.

Image Modified
Allows you to render regions in the V-Ray VFB.
Image Modified
Links the V-Ray VFB to Pdplayer.
Image Removed

Image Added

Section
Column
width60%

Left click enables/disables the test resolution in the VFB.

Right-click to bring

Left click and hold brings up menu to select the percentage of the render resolution to set as the test resolution. Note: This only affects V-Ray and does not affect the native Maya test resolution setting found under Maya's Render menu.

Column
width5%

 

Column
width35%
Image Removed

Image Added

 

 

Image Modified

Enables the Debug shading/Isolate selected option in IPR. Left-mouse click and hold the button to open a context menu with the debug shading options.

Image Modified

Renders only the selected object(s), while the rest of the scene is rendered black.

Image Modified

Locks the selection to the currently selected object. This allows making changes to the scene while shading only the locked object. 

Image Modified

Renders only the light contribution in the scene.

Image Modified

Shows only the ambient occlusion in the scene.

Image Modified

Shows the rendered objects in wireframe.

Image Modified

Shows the normals of the rendered objects.

Image Modified

Displays the UV coordinates of the rendered objects in color grade.

Image Modified

Displays the Barycentric coordinates of the rendered objects.

Image Modified

Section
Column
width60%

Starts interactive rendering. Right-click to access a list of available cameras from which to render. You can access this context menu even when the IPR is running and switch the view on the go.

Column
width5%

 

Column
width35%
Image Modified

Image Modified

Pauses interactive rendering. When paused, IPR stops loading the CPU, but the engine will continue to run and keep track of changes to the scene. Clicking this button again resumes interactive rendering and applies any changes to the active IPR session.
Image Modified
Stops the current rendering
Image Modified
Section
Column
width60%

Repeat the last render. Right-click to access a list of available cameras from which to render.

Column
width5%

 

Column
width35%
Image Modified
Image Modified
Opens the Color Corrections dialog, which lets you define color corrections of various color channels. Right-click to dock or undock it.
Image Modified
Forces color clamping in the V-Ray VFB. Click and hold left mouse button to display the clamped colors in the V-Ray VFB.
Image Modified
Permanently opens the info dialog which will give you information about the pixel on which you right-click. If you right-click over a pixel without turning this setting on, you will see the info dialog only while your mouse button is pressed.
Image Modified
Enables the Hue/Saturation/Lightness color corrections.
Image Modified
Enables the color balance corrections.
Image Modified
Enables the levels color corrections.
Image Modified
Enables the curve color corrections.
Image Modified

Enables the exposure corrections.

Image Modified
Enables the use of a background image.
Image Modified
Displays the image in sRGB color space. Click and hold the left mouse button to switch between sRGB color space and ICC.
Image Modified
Enables and disables the effect of the Look Up table loaded in the Color Corrections settings. Hold down to choose between LUT and OCIO color corrections.
Image Modified
Shows the V-Ray VFB history window. Right-click to dock or undock it.
Image Modified
Enables visualization of the pixel aspect ratio.
Image Modified
Enables or disables stereoscopic preview. Click and hold down the left mouse button to pick between several stereoscopic modes.
Image Modified
Opens the Lens Effects controls. Right-click to dock or undock them.

 

Color Corrections

...

The V-Ray VFB has robust Color Corrections controls (as seen in the image in the Overview) which are enabled with the icon () from the lower left corner of the VFB window. Color Corrections include Exposure, Hue/Saturation, Curves, etc. and are all covered here.

...