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3D Modelling & Animation

3D Modelling & Animation. Rendering. Agenda. Choices to make when rendering a scene Render workflow Renderer selection and related settings Network rendering Batch rendering Project folder structure. Choices for Rendering. Renderer - Hardware, Software, Vector

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3D Modelling & Animation

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  1. 3D Modelling & Animation Rendering

  2. Agenda • Choices to make when rendering a scene • Render workflow • Renderer selection and related settings • Network rendering • Batch rendering • Project folder structure

  3. Choices for Rendering • Renderer - Hardware, Software, Vector • Image Format - avi, mpg, gif, jpg, • Resolution - width x height e.g. 640 x 480 • Sequence - start frame, end frame, nth frames to render • File name and extensions • Anti-aliasing Quality • Raytracing options (increases rendering times!) • Network Rendering - Mental Ray

  4. Rendering Workflow • Preview rendering with playblast • Set project rendering configuration in render globals • Use IPR for preview and adjustments • Preview animation from batch-rendering n-frames • Batch-render sequence from command line

  5. Select Rendering from here Render Icons

  6. Rendering: Select Icon Render to IPR ‘Interactive Photorealistic Rendering’ Render to Window using current Settings Modify current settings in Render Globals dialogue boxes

  7. Render Window

  8. Render Window

  9. IPR Render Window Drag a rectangle around the region to render

  10. Render Globals: Common 1. Select Renderer • Render Using • Maya Software • Maya Hardware • Maya Vector (must be plugged-in)

  11. Render Globals:Common 2. Select Image Format • IFF by default • Movie formats .avt. .mpeg etc. • Bitmap .jpg, .gif etc.

  12. Render Globals: Common 3. Select Image Size 320 x 240 pixels a good size for rendering a preview

  13. Render Globals: Common 4. Select Camera View to Render

  14. Render Globals: Software Renderer 5. Select Render Quality Raytracing switched off by default. Switching on raytracing will increase rendering times substantially.

  15. Render Globals: Vector Renderer 6. Select Vector Render Quality and Shading IPR rendering not available with vector renderer

  16. Windows - Settings / Preferences - Plug-in Manager Vector renderer only available if plugged-in here

  17. Depth - Sorting Problems at Render Time Clipping planes assigned values at render time of -1 (near) and 0 (far)

  18. Displaying the camera clipping planes (Maya 8.5) Select the camera first to see the option to display its clipping planes

  19. If clipping planes have very large limits precision can be lost when comparing depths of objects in close proximity of each other leading to rendering artifacts

  20. If depth sorting errors occur one solution is to manually set the clipping planes to just encompass the nearest and farthest object in the scene and turn of Auto Render Clip Plane

  21. Network Rendering • Rendering tasks shared between computers across a network • Requires a ‘master’ (server) and ‘slave’ machines (hosts) • Network rendering software server on master machine distributes rendering tasks to slave machines • Rendering server co-ordinates slaves return of rendered animation frames to master via network to common destination folder • Images then composted back into sequences - .avi .mpg in post production process - Premiere, After Effects etc. • Maya - network rendering setup a ‘mission’ - better third-party solutions. Number of slave machines restricted by licence type • 3DS MAX - network rendering out of the box since the early MSDOS versions - no restriction on number of network slaves

  22. Network Rendering slaves Master Rendered animation frames returned to common folder on network

  23. Establishing Network Rendering with Maya and Mental Ray • Choose a machine to use as the host (must have Maya installed) • Install Mental Ray Satellite on all slave machines • Try ‘pinging’ the hosts on the network to verify ip connectivity • list hostnames on master machine in the Maya.rayhosts file here: • /My Documents/maya/7.0/prefs/ (change the Maya version etc.) • Master and slave must communicate on same port - default is 7106 - port established during installation of Mental Ray - specified in: • windows\system32\drivers\etc\services (edited this file with care) • mi-ray 7106/tcp // Maya 7 • mi-raysat85 7106/tcp // Maya 8.5 • Each Mental Ray release is different - must use matching version for slave and host machines

  24. Establishing Network Rendering with Maya and Mental Ray http://www.lamrug.org/presentations/oct2004/mental_ray_for_maya_render_farm_.htm Some further information here...

  25. Examples of Rendering usingMental Ray

  26. Batch Rendering • Preview animation from batch-rendering n-frames • Batch-render sequence from command line

  27. Project Folder Structure Render output sent to the images folder by default

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