[r300] Experiment on ppc

[Dario L. <la...@cs...>]

Hi,
as first, it's the first time I play with dri, maybe I'm just omitting a
step, but in doubt I report.
I'm trying to use the r300 driver from http://r300.sourceforge.net/ on
aluBook 15" (cpu 7447/7457, radeon mobility 9600). This is what I obtain
following the instruction in r300-driver/README:
http://laera.web.cs.unibo.it/dri/dri.jpg
3 observation:
- the console font is unreadable, but I was getting the same result with
the original xorg dri;
- glxgears render out of the window;
- I get ~700 fps :D (without 100 fps).

Then I've tried the r300_demo(v_0_0_1): I've wrote an ugly fix that just
works for
me for an endianess problem

--- r300_demo.c.orig    2005-02-08 17:28:59.401574088 +0100
+++ r300_demo.c 2005-02-08 17:32:33.791981792 +0100
@@ -79,18 +79,29 @@

 unsigned short get_short(CARD32 address)
 {
-unsigned short *p;
+unsigned *p;
+unsigned short ps;

-p=(unsigned short *)(registers+address);
-return *p;
+p=(unsigned *)(registers+address);
+fprintf(stderr,"hei %x\n",*p);
+
+ps=(((*p)&0xff000000)>>24)|(((*p)&0x00ff0000)>>8);
+fprintf(stderr,"hei %x\n",ps);
+
+return ps;
 }

 CARD32 get_int(CARD32 address)
 {
 CARD32 *p;
+CARD32 ps;

 p=(CARD32 *)(registers+address);
-return *p;
+ps=(((*p)&0xff000000)>>24)|
+       (((*p)&0x00ff0000)>>8)|
+       (((*p)&0x0000ff00)<<8)|
+       (((*p)&0x000000ff)<<24);
+return ps;
 }

 void GetMaps(void)



This is what I obtained:
http://laera.web.cs.unibo.it/dri/tex-triangles.jpg
http://laera.web.cs.unibo.it/dri/triangles.jpg

After executing the demo, glxgears fall down to ~200 fps.

There is some debug info I can post for help?

Thanx, Dario.


--
Laera Dario
Undergraduate student at Computer Science
University of Bologna
ICQ # 203250303
Mail to: la...@cs... pen...@li...