Changelog:

Revision 1246: First draft of GE viewport interpretation. Not yet fully functional: this
feature has to be enabled in VideoEngine.useViewport to not break current games.
Code review is welcome!

Revision 1245: Allow the configuration of the normal values in 3D Studio.

Revision 1244: Fixed lighting for directional light (no spot exponent and cutoff).

Revision 1243: Add more randomness to Texture hashCode for TextureCache (was causing problems
when switching textures in 3D Studio)

Revision 1242: Lighting was not always completely disabled in 2D (spotted by tests of
BlackDaemon using 3D Studio

Revision 1241: Refactoring of sceKernelLoadModuleByID with sceKernelLoadModule: also allows
loading of HLE modules.

Revision 1240: Reorganized hardware information(currently Battery and MemoryStick) in own
classes.
Implemented Battery Drain (reduces Battery power by 1% every 3 minutes).

Revision 1239: Fixed GE Context saving problem introduced in r1236

Revision 1238: 2D mode is not affected by FOG.
Reverted r1236 changes from CLEAR command for color&alpha mask.

Revision 1237: Added tests for PMSKC/PMSKA in 3D Studio.

Revision 1236: Partially implemented PMSKC and PMSKA video commands (only masks 0x00 and 0xFF
are supported by OpenGL).

Revision 1235: Added Test program for 3D: 3DStudio. Allows testing of almost every 3D command
interactively on a PSP to compare with the results on Jpcsp.

Revision 1234: Improved TFUNC video command (e.g. DECAL mode). Tested on PSP.
Allow partial matrix loading (view, model, texture, projection): start index is
given at start command.
Both fixes should improve a few 3D games.

Revision 1233: Reverted some nomenclature changes. Implemented sceKernelUSec2SysClockWide.

Revision 1232: Added and corrected some file flags in pspiofilemgr.
Implemented cmd 0x01020004 (sceIoIoctl).
Started some additional work in sceSasCore.

Revision 1231: Added tests of cvtws to fputest. No problem found.