The 5.2 release is a minor upgrade to the SDK and was released primarily to keep in sync with changes to the SpeedTree Modeler application.
1. More advanced wind effects added to leaf meshes. Changed include:
Macro SPEEDTREE_ADVANCED_WIND added to top of ForestRI.h. Commented out by default, but commenting it back in and compiling from the RenderInterface up to a platform's application should enable the advanced wind effects. Evaluators should have enough source in evaluation kit to do this also. When this macro is #defined, the following changes occur:
2. SRT file format changed to support new wind data, but SpeedTree Compiler now exports versions 5.0, 5.1, and 5.2 of the SRT file format. This allows users to use the latest Modeler and Compiler applications without necessarily updating to the latest SDK. To update your SRT files to 5.2, simply recompile them using the 5.2 Compiler application.
3. STF (SpeedTree Forest) file format updated to match what the world building feature of the SpeedTree Modeler (new in 5.2) now exports. 4. In Core library, CErrorHandler object and g_pEvalKey are no longer dynamically allocated to later be deleted by CCore::ShutDown(). Both now don't use the heap at all. These changes are internal and do not affect CCore's public functions.