The latest SDL CVS update contains some matrox hardware acceleration.
http://www.devolution.com/~slouken/SDL/cvs.html
I’d appreciate somebody looking at it, as the blit clipping doesn’t
work, and the colorkey blitting does strange things.
(code in src/video/fbcon/SDL_fbmatrox.c)
To test the hardware colorkey blits, run the testsprite program with
the -hw and -flip command line arguments.
What works: Allocating hardware surfaces, normal accelerated blits,
and normal color fills.
I am also including an unofficial patch to the framebuffer console
driver which enables SDL to wait for the vertical retrace. I’ve
seen some discussion on how this could be done, but I haven’t seen
any code doing it in the framebuffer console driver yet.
BTW, I noticed that one of the Matrox blit parameters was a YUV
colorspace flag. grin Anyone have the Matrox specifications handy?
See ya,
-Sam Lantinga (slouken at devolution.com)
Lead Programmer, Loki Entertainment Software–
“Any sufficiently advanced bug is indistinguishable from a feature”
– Rich Kulawiec
-------------- next part --------------
diff -ru tmp/linux/include/linux/fb.h linux/include/linux/fb.h
— tmp/linux/include/linux/fb.h Sat Apr 24 17:51:48 1999
+++ linux/include/linux/fb.h Sun Dec 19 18:50:58 1999
@@ -26,6 +26,7 @@
/* #define FBIOSWITCH_MONIBIT 0x460E */
#define FBIOGET_CON2FBMAP 0x460F
#define FBIOPUT_CON2FBMAP 0x4610
+#define FBIOWAITRETRACE 0x4611
#define FB_TYPE_PACKED_PIXELS 0 /* Packed Pixels /
#define FB_TYPE_PLANES 1 / Non interleaved planes */
diff -ru tmp/linux/drivers/video/fbmem.c linux/drivers/video/fbmem.c
— tmp/linux/drivers/video/fbmem.c Mon Aug 9 12:04:40 1999
+++ linux/drivers/video/fbmem.c Sun Dec 19 18:55:26 1999
@@ -23,6 +23,7 @@
#include <linux/console_struct.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
+#include <asm/io.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
@@ -411,6 +412,14 @@
if (copy_from_user(&cmap, (void *) arg, sizeof(cmap)))
return -EFAULT;
return (fb->fb_get_cmap(&cmap, 0, PROC_CONSOLE(info), info));
- case FBIOWAITRETRACE:
+#ifdef i386 -
while (!(inb_p(0x3da) & 8)); -
while (inb_p(0x3da) & 8); -
return 0;
+#else
-
return -EINVAL;
+#endif
case FBIOPAN_DISPLAY:
if (copy_from_user(&var, (void *) arg, sizeof(var)))
return -EFAULT;
