Mode - This groups of controls allow the user todo select the bien the Irradiance Map is (re)used.
bucket mode - In this mode, a sepárate Irradiance Map is used for each rendered región (bucket). This is especially useful since it allows the Irradiance Map computations todo be efectively distributed among several computers when using
distributed rendering bucket mode can be slower that the Single Frame mode, since an additional border must be computed around each región in order todo reduce Edge artefactos between neighboring Regions. Even so, there may be such artefactos. They can be further reduced by using higher settings for the Irradiance Map (the high preset, more Hemisphere subdivisiones and/or smaller noise threshold for the dmc sampler).
Single frame - The default mode, a single Irradiance Map is computed for the whole image, and a new Irradiance Map is computed for each frame. During distributed rendering, each render server Will compute its own full-image Irradiance Map. This is the mode todo use when rendering animations of moving objects. In doing so one must make sure that the Irradiance Map is of suficiently high quality todo avoid flickering.
Multiframe incremental - This mode is useful when rendering a sequence of frames (not necessarily consequtive) where only the Camera moves around (so-called fly-th rouge animations).
V-ray Will compute a new full-image Irradiance Map for the first rendered frame, for all other frames Vray Will try todo reuse and refine the Irradiance Map that has ben computed so far. If the Irradiance Map is of suficiently high quality as todo avoid flickering, this mode can a los be used in network rendering - Each rendering server Will compute and refine its own local Irradiance Map. Note that this mode is not supported for
distributed rendering.
From file - In this mode Vray Will Simply load the Irradiance Map from the supplied file at the start of the rendering sequence and Will use this map for all the frames in the animation. No new Irradiance Map Will be computed. This mode can be used for fly-th rouge animations and Will work well in network rendering mode.
Add todo current map - In this mode Vray Will compute a completely new Irradiance Map and Will add it todo the map that is already in memory. This mode is useful when compiling an Irradiance Map todo render múltiple views of a static scene. Note that this mode is not supported for
distributed rendering.
Incremental add todo current map - In this mode Vray Will use the Irradiance Map that is already in memory and Will only refine it in places that dont have enough detail. This mode is useful when compiling an Irradiance Map todo render múltiple views of a static scene or a fly-th rouge animation. Note that this mode is not supported for
distributed rendering.
animation (prepass) - In this mode Vray calculates Irradiance Maps todo be used later on for final rendering with the animation (rendering) mode. One Irradiance Map is created for each frame and written into a sepárate file. Note that in this mode you have todo render one map for each frame (i, you cannot render every nth frame). V-ray automátically disables rendering of the final image in this mode - Only Irradiance Map prepasses are calculated.
animation (rendering) - In this mode Vray renders a final animation using Irradiance Maps created with the animation (prepass) mode. Irradiance maps from several adjacent frames are loaded together and blended so as todo reduce flickering. The number of Irradiance Maps that are interpolated is determined by the interp, frames parameter.