PTB beta release 2012-4-1 (SVN Revision 2540)
For more details, please review the detailed change log.
PsychPortAudio: Potential startup latency reduction on all systems as now runlevel 1 is used by default. This potentially reduces start latency for sound playback at the expense of slightly higher cpu load while playback is stopped.
Performance improvement to
Screen('MakeTexture')via new optional specialflag 4 – Much faster for all uint8 input textures and for Luminance + Alpha and RGB8 textures as created from double() input matrices. However, mode 4 requires a GPU with shader support and may not work well with scrolling/drifting textures or on a few other special cases. It is best used for fast creation of still images.
Code cleanup here and there.
Some tiny fixes for Octave 3.6 compatibility of M-Files.
DaqAInScanContinuenow can return “live data”. (Untested).
KbTriggerWaitet al. now support handling of mouse, joystick, gamepad and similar devices as mini keyboards: Their buttons can be treated as keys on a keyboard and queried by the
KbXXXfunctions. This allows simplified (ab)use as response button devices.
Support for procedural visual noise on modern GPUs - Perlin noise for fast visual noise generation on supported gpus. Use with caution: Perlin noise is not Gaussian noise!
Small improvements to
QuestSimulate: Can now visualize its operation.
Datapixx mex files updated by
VPixxto support the
ViewPixxdevice, e.g., backlight control.
CMUBoxnow handles Cedrus Lumina response boxes (Untested).
Various other small improvements and some new demos.
Windows & Linux:
- GStreamer movie playback engine enhanced with many bug fixes, improved features, some new functionality, performance improvements.
OSX & Linux:
- Improved realtime scheduling setup for increased robustness of timing when many threads are active or system is loaded. OS/X now uses Mach realtime scheduling everywhere, not only on master thread. Linux has refined priority level setup and uses mutexes with priority inheritance.
Screen(‘DrawText’) now obeys geometric transformations, e.g., in DrawMirroredTextDemo.
PsychHID HID device enumeration improved due to upgrade to latest HIDAPI.