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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/glint/README.pm3,v 1.11 2001/05/08 19:31:22 alanh Exp $ */
STATUS as of Tue, 8 May 2001 19:01:39 +0200
Working :
* Unaccelerated : Depth 8, 15, 16 and 24 are ok. I tested them upto
1280x1024 only as my monitor don't support higher modes.
* Endianess clean, thanks to Romain Dolbeau <dolbeaur@club-internet.fr> for
helping me debug this.
* HW cursor.
* ShadowFb.
* Full 2D Accels.
- Sync.
- Pixmap cache.
- Offscreen pixmaps.
- Clipping.
- Screen to screen copy.
- Solid fills.
- HorVert Solid Lines .
- 8x8 Mono Pattern Fills.
- Color Expansion Fills.
- Images Writes.
- Bitmap Writes using direct FIFO writes with or without FIFO Disconnect.
- Pixmap Writes using direct FIFO writes with or without FIFO Disconnect.
* Appian J2000 second head initialization.
* Dual head : The console fonts will get trashed, but dual head works.
* Xv : Hardware video scaler :
- Needs checking on a big endian machine.
- Needs acceleration to work.
- Clipping supported trough the alpha channel in depth 15 and 24
and with an overlay key color in depth 8 and 16.
- Support both dual head and single head, trough gamma or permedia3.
- Attributes are :
- FILTER : None, Partial (X only) or Full filtering.
- MIRROR : X and/or Y Axis mirroring.
- ALPHA :
- 0 -> FB Only
- 1 -> 25% Video, 75% FB
- 2 -> 75% Video, 25% FB
- 3 -> Video Only
- [TODO] VIDEOKEY : Overlay Key Color for clipping in depth 8 and 16.
* DRI : Work is underway.
Not Working :
* [NOT POSSIBLE] 2D Accel :
- Solid & Dashed Lines are not possible on glint hardware.
- 8x8 Color Pattern Fill is almost never used.
- Clipping needs cleaning up.
* [TODO] 2D Accel hooks for the Rendering extension :
- Render extension initialization.
- CPUToScreenTexture.
- CPUToScreenAlphaTexture.
* [NEED FIX] Xv has still some minor problems :
- depth 8 does not work, but then it may be the app i am using.
- when using 2D accels there is some unstability in the video display. I
guess this is because there is then not enough bandwith to do the
copying of the data in time. After a time of the above, the images
becomes black. It will come back once stopvideo is called.
[FIX] i will disable VideoOverlay each 25 frames, this causes a flicker,
but at least it will bing the image back.
* [WORK IS UNDERWAY] DRI/OpenGL (only together with a gamma chip) :
- DRI support should be ok, but accelerated openGL is not yet supported.
- The accelerated OpenGL library supposes we are using a gamma together
with a MX rasterizer, not a Permedia3 one.
Known problems :
* Console gets broken when using dual headed mode. The culprit seems to be
the vga graphics index & port (GraphicsIndexReg : 0x63ce, GraphicsPort :
0x3cf). I had to use IO acces for both these two, because if not, console
fonts would get trashed even in mono headed mode.
[FIX] Well, if you really need the console and are running linux, just use
vesafb, it will be a bit slower, but the fonts will no more become
corrupt. Maybe i will even try writting a specific fbdev for the pm3,
which will be much faster and have more functionality.
[FIX2] try : consolechars -d, it should reload the console fonts.
* [FIXED] R-B inversion. Sometimes, all of a sudden, it seems as the
RGB order gets changed. going to console and back solves this.
Well, this is partly fixed, but still appears under very heavy load.
* [FIXED] When moving a window around a lot quickly, the video outputs dies.
Well, this is partly fixed, but still appears under very heavy load.
=> [NOTE] If this two still happens, try disabling the Hardware cursor, with
the "SWCursor" option to your device XF86Config section.
* Sometimes there are blue transparent garbage in the form of small
horizontal bands, few pixels high, and more pixels width, maybe 64pixels ?
This may be a hardware bug.
Sven Luther <luther@dpt-info.u-strasbg.fr>
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