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This source code may damage your hardware.
It is *UNTESTED* and *BROKEN* !
Or, at least, some of it is.
R600_DEMO
DRM/DRI exercise utility
This is a bringup utility for learning how to program r6xx cards. It
has no value for you if you are not a hardware driver hacker. Except
for that it (hopefully) will draw a single triangle for you :-P
Authors:
Matthias Hopf <mhopf@suse.de>
Alexander Deucher <Alexander.Deucher@amd.com>
The original skeleton for r600_demo was r300_demo, but there's almost
none (literally) code left from these days.
The r600_demo code is provided without any warranty and in
understanding that direct access to the hardware can lead to permanent
damage to the hardware (or even damage to the user - say from locked up
laser displays).
The software is meant for experimentation and thus one should not
expect it to be checked for compatibility or suitability for any
purpose.
STATE
- DRM state dump ok
DRM setup works - DRM shows some issues, still, GART
texture space has a wrong GPU address assigned, etc.
- GPU state dump ok
- CP setup + test '.' ok
- CPU based clear screen 'c' ok
- More extensive CP tests 'p' ok
- PM4 dump tests 'w' 'W' 'b' ok
- Triangle tests 't' 'T' ok
- Texturing tests 'q' ok
- GPU reset 'r' ok
- EXA tests 'e' 'E' ok
- Register dump <range> ok
- Register setting <reg>=<val> ok
- Various test 'x' unknown
Tested on R600, RV610, RV620, RV630, RV635, RV670, RV710, RV730, RV770
SETUP:
Requirements:
- r600_demo from git://anongit.freedesktop.org/git/mesa/r600_demo
- An r6xx or r7xx card, testing happens mostly on
RV610, RV670, and RV770. R600 is probably the least supported.
- Install + configure radeonhd:
Get the latest driver (1.2.4 is good enough). Explicitly enable
DRI and disable 2D acceleration:
Option "DRI"
Option "AccelMethod" "none"
- Install DRM:
Get and install the latest DRM.
RUNNING:
- Run the Xserver. No additional clients needed (r600_demo is not an X
client, so no server reset occurs).
- Call r600_demo on the same machine as root(!).
./r600_demo
This will print out the usage, including all options.
./r600_demo ""
This will print out the state of DRM and the graphics card
(busy flags + ring and buffer states). Add '-v' to get a list of all
mapped memory regions and a more verbose state output.
./r600_demo pc
Will test the CP, and clear the screen.
./r600_demo t
Draws two Gouraud shaded triangles.
./r600_demo r
This resets the engine. "./r600_demo rct" is a typical call, because
the 't' and 'q' tests do not invaldiate the shaders correctly yet.
./r600_demo rcqE
Draws a textured quad, and then invokes the EXA copy test, which
copies the top left corner 3 times.
./r600_demo "" 30000-3001c
Register dump: prints out the first two ALU constants
(SQ_ALU_CONSTANT0_0 - SQ_ALU_CONSTANT3_1). Any number of single
registers and ranges allowed.
You can lock up the whole machine when accessing non-existent
register space, so beware.
make dump
Create a register dump of known registers.
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