Diff for /wikisrc/users/macallan.mdwn between versions 1.8 and 1.9

version 1.8, 2010/01/13 08:04:02 version 1.9, 2010/01/13 09:59:42
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   ## Personal crap you always wanted to know but never dared to ask
   yeah, right
   
   ## Stuff I'm to blame for
   * rewrote the interrupt handling code in [[macppc]], made it machine independent enough to work on other PowerPC platforms as well
   * rewrote the ADB subsystem used on [[macppc]] and probably [[mac68k]] - no more phantom events, keyboard LEDs work now, mouse button emulation, support for [[cuda]]'s i2c bus, all in all it's much smaller and simpler than the old code
   * wrote a bunch of graphical console drivers ( see below )
   * wrote a bunch of Xorg/XFree86 drivers
   * added generic support for virtual consoles, scrollback buffers etc. to wscons
   * [[wscons]]-ified [[sparc64]]
   * added provision to allow console drivers to be machine independent
   * made [[Xorg]] work on [[macppc]], [[shark]], [[sgimips]], [[sparc]] and [[sparc64]]
   * craploads of bugfixes and other minor improvements
   
   ### Drivers I wrote:
   * [[cuda]] - the microcontroller found on older PCI PowerMacs, provides ADB, realtime clock, nvram, power control and in some cases an i2c bus
   * [[pmu]] - the microcontroller found in PowerBooks, iBooks and newer pre-G5 PowerMacs, provides realtime clock, nvram, power control and sometimes ADB, battery, environmental sensors or volume and brightness control
   * [[nadb]] - ADB device discovery, attached to [[cuda]] or [[pmu]]
   * [[adbkbd]] - driver for ADB keyboards, includes emulation for mouse buttons 2 and 3
   * [[adbms]] - driver for ADB mice and trackpads. Supports tapping on trackpads.
   * [[adbbt]] - driver for volume, brightness etc. control keys found on some PowerBooks and all(?) iBooks
   * [[sgsmix]] - additional mixer chip found in beige G3 Macs, supports additional bass and treble control, requires [[cuda]] since it's controlled via i2c which the old ADB subsystem does not support
   * [[dbri]] - a driver for the ISDN / audio chip found in the SPARCstation 20 and SPARCbook 3GX, it's audio only, there is no support for the ISDN part
   * [[panel]] - driver for the buttons on the SGI Indy's front panel
   * [[agten]] - accelerated console driver for Fujitsu [[AG-10e]] SBus graphics boards
   * [[chipsfb]] - accelerated console driver for Chips & Technologies 65550 graphics controllers
   * [[genfb]] - a generic framebuffer console driver. Depends on machine-dependent code to pass setup information as device properties
   * [[gfb]] - dumb framebuffer console driver for Sun [[XVR-1000]] graphics boards
   * [[pm2fb]] - accelerated console driver for Permedia 2 graphics controllers
   * [[r128fb]] - accelerated console driver for ATI Rage 128 graphics controllers
   * [[voodoofb]] - accelerated console driver for 3Dfx Voodoo 3 graphics controllers
   * [[voyagerfb]] - accelerated console driver for Gdium Liberty MIPS-based laptops
   * [[xf86-video-ag10e]] - accelerated Xorg driver for Fujitsu [[AG-10e]] graphics boards
   * [[xf86-video-crime]] - accelerated Xorg driver for the SGI O2's onboard rendering engine
   * [[xf86-video-igs]] - accelerated Xorg driver for IGS CyberPro 2010 and similar chips, tested on [[shark]] only but supporting at least [[netwinder]] should be trivial
   * [[xf86-video-pnozz]] - accelerated Xorg driver for the SBus Weitek P9100 found in SPARCbook 3GX laptops
   
   ### Drivers I substantially improved
   * [[igsfb]] - added mode setting support
   * [[machfb]] - added hardware acceleration
   * [[pnozz]] - added hardware acceleration and cursor sprite support
   * [[crmfb]] - added hardware acceleration and cursor sprite support
   * [[tcx]] - added hardware acceleration
   * [[tslot]] - adapted from OpenBSD, support for the PCMCIA slots in the SPARCbook 3GX
   * [[xf86-video-suncg6]] - added hardware acceleration
   * [[xf86-video-suntcx]] - added hardware acceleration
   
 ## TODO:  ## TODO:
 * figure out why anti-aliased font rendering with [[XAA]] in [[Xorg]] 1.6 is ridiculously slow compared to 1.4<br>  * figure out why anti-aliased font rendering with [[XAA]] in [[Xorg]] 1.6 is ridiculously slow compared to 1.4<br>
 Actually there is some progress. The miGlyphs() function uses a scratch pixmap to render characters into which it then renders into the target pixmap. Since off-screen pixmaps in XAA are currently broken and the Xorg people refuse to fix it the scratch pixmap will be in RAM with all XAA drivers resulting in software rendering ( not that XAA knows how to accelerate vram-to-vram composite ops anyway ). I got around that by implementing a private Glyphs() method for the [[crime]] driver which gives a nice speedup but still gets us nowhere near the performance we had with Xorg 1.4. A private Glyphs() implementation for XAA which avoids the scratch pixmap resulted in a small but measurable speedup with the [[sunffb]] driver.  Actually there is some progress. The miGlyphs() function uses a scratch pixmap to render characters into which it then renders into the target pixmap. Since off-screen pixmaps in XAA are currently broken and the Xorg people refuse to fix it the scratch pixmap will be in RAM with all XAA drivers resulting in software rendering ( not that XAA knows how to accelerate vram-to-vram composite ops anyway ). I got around that by implementing a private Glyphs() method for the [[crime]] driver which gives a nice speedup but still gets us nowhere near the performance we had with Xorg 1.4. A private Glyphs() implementation for XAA which avoids the scratch pixmap resulted in a small but measurable speedup with the [[sunffb]] driver.

Removed from v.1.8  
changed lines
  Added in v.1.9


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