Use Sub-camera, when activated, uses the sub-camera defined for the selected camera in the preview frames (see Previewing Frames in the Viewer ). In most of the cases the Large value will do the work, because it is not slower than the None option, and yet is able to preview complex scenes. Setting the value to Medium or Small will allow the preview of very high resolution outputs of very complex scenes, that otherwise may fail to be previewed setting the value to None may prevent some artifacts that the tile stitching may generate. Render Tile: allows the preview of very complex scenes whose frames will be computed in tiles that are automatically stitched to create the final preview: the smaller the size of the tile, the longer the preview process. However it is suggested to use the Half or Single values if the scene to preview is very complex, because the higher the dedicated CPUs, the more the memory required to perform the preview. Setting the value to All will generate a number of rendering threads equal to the number of processors, thus speeding up the previewing process. The higher the balance chosen, the longer the time needed for rendering the output.Īdditionally, OpenToonz provides several other standard resampling filters that could help improve the final results in a wider range of situations.Ĭhannel Width: sets the color depth for rendered images choices are 8 bit or 16 bit per color channel.ĭedicated CPUs: sets, in case your computer has multiple CPUs, how many processors will be assigned to the previewing process. Originally Toonz provided three options: Standard, Improved, High.
There are several options to choose from.
By balancing the resample you can give some sharpness back to the rendered frames. In scenes where images are strongly resampled, for instance when their size changes dramatically, the final rendering may appear slightly out of focus. Resample Balance: controls the resample that is used when images are scaled or rotated. Shrink: sets the reduction value for the previewed sequence resolution for example if it is 2, one pixel each two will be rendered, thus resulting in previewed frames having half of the original output camera resolution.Īpply Shrink to Main Viewer if activated uses the shrink value set in the preview settings to the preview mode of the viewer as well (see Previewing Frames in the Viewer ). Step: sets the step for the rendered sequence for example if it is two, one frame each two will be rendered. Output Camera: sets which camera, among the ones defined in the scene, has to be used to set the resolution and preview the animation.įrame Start: and End: set the frame range of the scene to preview by default these values refer to the whole scene length. The Preview Settings dialog lets you define the resolution, range, step and shrink of the preview frames. To optimize the preview time, only the area visible in the Preview window will be rendered: if you zoom out the Viewer the preview will resume to render the new visualized area.
It is possible to clone the Preview window, or to automatically open as many Preview windows as needed by activating the Preferences… → Preview → Display in a New Flipbook Window option, for example to examine or compare specific frames by using the Flipbook tools (see Using the Flipbook ). It is possible to activate the Preferences… → Preview → Fit to Flipbook option to ensure that the previewed images fit the size of the preview window, regardless their resolution. It is also possible to display blank frames after each preview playback, when looping.
It is possible to define the range of previewed frames both in the Preview Settings and by using the Playback Markers in the Xsheet/Timeline: any change made in one mode is reflected in the other one as well (see Using the Playback Markers ). In this way the preview can be configured so that it is faster to compute then the final output, for example because it uses a camera with a smaller resolution. The animation can be previewed in a separate window according to specific Preview Settings, that can be different from the Output Settings. Rendering Animations with Alpha Channel Information.Previewing and Caching Effect Nodes in the Schematic.