Now when I render, I will have the chosen materials rendered with the colors I have assigned, which I will now use it for compositing in post production as a mask to make color editing, enhancement or adjustment with post-production or compositing software to my objects in a scene having those material assigned. Finally, in the Render Element tab of Maya's Render Settings, I select Material ID as an added render element. On the other hand, with regard to Vray Material ID, I will have go directly to Hypershade and select a Material then, in the Attribute Editor, I click output connections to surfaceShader and there to select Material ID in the tab Attributes>Vray>Material ID next step, I move to the bottom of the Attribute Editor where a new Extra Vray options appear and there chose either Red, Green or Blue to assign that color to the Vray material. Image filter settings are in the Image Sampler rollout in the VRay tab of the Render Settings.Thank you sean.heasley following on your advise, I've checked Vray and Maya documentation, videos and related tutorial, so now I understand that in Maya 2015 by selecting any of the options for Render mask (Texture, Object Set or ObjectID's) in the Vray tab of Maya Render Settings I will be able to render just the specific parts that I select and designate as either Texture or Object Set or assign a number as an ObjectID's. ).įiltering – Applies the image filter to this channel. Ignore Z – Disregards motion along the Z axis.įilename suffix – The text added to the end of the rendered file, when saved as a separate file (e.g. This is a read-only parameter and can be used as a guide for setting the Max Velocity parameter. Max Velocity in last frame – Shows the maximum velocity value that was found while rendering the last image. This is only useful if writing to an 8-bit or 16-bit file format. Max Velocity – Used to scale the velocity values written to the render element so that they fit within the range specified by the Clamp Velocity parameter. This option is useful only when writing to an 8-bit or 16-bit file format. When enabled, this option limits the max velocity value to 1 for floating point images, 255 for 8-bit images, or 65535 for 16-bit images. A medium gray color indicates no motion.īecause of the relationship between XYZ motion and RGB colors, the Velocity Render Element can be easily split into R, G, and B components during the compositing process and each direction can be handled separately or together to add motion blur.Įnabled – When enabled, the render element appears in the V-Ray Virtual Frame Buffer.ĭeep output – Specifies whether to include this render element in deep images.Ĭlamp Velocity – Sets the limit for Max Velocity. A pale yellow object has moved a great deal on all three axes in the positive direction, but mostly on X and Y, while a dark purple object has moved on the -X and -Z axes. For example, a white object has moved at the maximum velocity on all three axes in a positive direction, while a black object has moved at the maximum velocity in negative direction on all three axes. The object's motion between the current frame and the next frame on the X, Y, and Z axes is mapped to R, G, and B components, with movement along the negative axis as 0 and movement along the positive axis as the maximum value. The shading in the Velocity Render Element is determined by the degree of motion for each object's pivot point. It is commonly used to create mattes for adding motion blur in a composite. Each moving object is rendered with a flat color or gradient. The Velocity Render Element stores surface velocity for moving objects in the scene with different colors representing different velocities.
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