New/modified features

Lights
VRayAmbientLight added; useful in cases where fast ambient occlusion is desired instead of full global illumination (e.g. through VRayDirt texture);CIE sky models added to VRaySun and VRaySky;

Rendering core
Improved multithreading performance on multi-core machines;

Volumetric effects
VRayEnvironmentFog allows arbitrary meshes as gizmos, as well as soft falloff for fog density;

Distributed rendering
Fixed problems when rendering large .max files;

Build 1.50.SP4 official (21 October 2009)
===================

New features:
(*) Added VRayAmbientLight;

Modified features:
(*) Improved multithreading on multi-core machines;
(*) Ability to specify gizmo falloff for VRayEnvironmentFog;
(*) Ability to use arbitrary meshes as gizmos for VRayEnvironmentFog;
(*) Option to exclude the background from VRayEnvironmentFog;
(*) "Show last VFB" command works even when there is no VFB (e.g. scene is just opened);
(*) Added CIE sky models to the VRaySun and VRaySky;
(*) It is now possible to submit DR servers list for DR though backburner;
(*) Added option for the VRayIES light to not use area speculars;
(*) Added Kelvin temperature settings for the color of VRayLights;
(*) VFB history is now turned off when 3ds Max is in slave mode;
(*) Output .vrimg and split channel paths are listed in the Asset Tracker;
(*) GI cache files (irradiance maps, light cache etc) are listed in the Asset Tracker;

Bug fixes:
(*) DR fails with large .max files;
(*) Crash with Remove button for gizmos and lights in VRayEnvironmentFog;
(*) Crash with Hair&Fur in 3ds Max Design 2010;
(*) Issue with Arch&Design materials in multi/sub-object material;
(*) It should not be possible to export already created VRayProxy objects as .vrmesh files;
(*) Fixed invalid colors with texture-mapped lights when the texture contains black areas;
(*) Fixed occasional license errors with codes (-209), (-9) and (1000) on slow networks
(*) Fixed a crash when using a combination of VRayLightMtl materials and VrayDirt with "Work with transparency" enabled;
(*) Cloning the V-Ray renderer did not clone the override material exclusion list;
(*) Fixed problems with velocity channel and objects close to the camera;
(*) VRayToon was black on directly visible dome lights;
(*) Fixed issue with VRayToon and opacity mapped objects;
(*) Fixed a problem with hilights in VRayFastSSS2 material;
(*) Fixed different buckets with interpolated glossy reflections and DR;
(*) Multi-matte render element did not work with VRaySphereFade;
(*) Fixed crash with DR in specific cases;
(*) The MaxScript for exporting .vrscene files now exports "RGB Multiply", "RGB Tint", "ColorCorrect" and "ColorCorrection" textures;

SLOW RENDERING IS FIXED!

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