And now to the list:
On Dienstag 16 Mai 2006 14:20, Claudio Ciccani wrote:
> Stefan Lucke wrote:
> > On 2004-04-07 & 29 patches from Vadim Catana added pixel based alpha
> > blending
> > of the videoLayer with primaryLayer for radeon driver.
> > This feature seems to be absend now.
> >
> >>From video viewing, it had (should have) the same effect as using
> > SetLevel(-1) of the unichrome driver. I'd like to have this back :-).
> > But my which is, that both drivers should work in the same manner
> > (from programmers view).
> >
>
> The new driver doesn't include that option because I think that the
> ALPHA_MODE_PER_PIXEL mode of the overlay is related to alpha test rather
> than alpha blend (i.e. it makes the overlay visible if the underlaying
> pixel has an alpha channel greater/equal to the selected value, at least
> this is how it works on the R300).
Did you test with DLOP_ALPHACHANNEL and DLOP_DST_COLORKEY at the
same time ? I think both are mutually exclusive.
However it worked for me and the one who originally supplied the patch
for radeon (Vadim Catana I guess). I made a small patch that brings this
functionality back. My graphic card is a radeon 9200 with 256MB ram.
(*) DirectFB/Graphics: ATI Radeon 9200 (5961) 1.0 (Claudio Ciccani)
"dmesg|grep -i rade" shows the following:
[ 44.961401] radeonfb: Found Intel x86 BIOS ROM Image
[ 44.961406] radeonfb: Retreived PLL infos from BIOS
[ 44.961410] radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=250.00 Mhz,
System=200.00 MHz
[ 44.961413] radeonfb: PLL min 20000 max 40000
[ 46.207637] radeonfb: Monitor 1 type CRT found
[ 46.207642] radeonfb: EDID probed
[ 46.207644] radeonfb: Monitor 2 type no found
[ 46.208204] radeonfb (0000:01:00.0): ATI Radeon Ya
[ 62.725347] [drm] Initialized radeon 1.19.0 20050911 on minor 0:
"lspci -v -s 01:00.0" reports:
01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200]
(rev 01) (prog-if 00 [VGA])
Subsystem: Connect Components Ltd Unknown device 2801
Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 19
Memory at d0000000 (32-bit, prefetchable) [size=256M]
I/O ports at c000 [size=256]
Memory at e9000000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at e8000000 [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Capabilities: [50] Power Management version 2
> Hower DLOP_ALPHACHANNEL should not change the layer level, according to me.
I would not say that specifying DLOP_ALPHACHANNEL should change the level.
With DirectFB the same functionality for two different cards has to be done
in two different ways. That's what I don't like. I'm comparing now VIA-unichrome
and ATI-radeon. I can show something on the video layer and an OSD. The OSD
seems to be on top of the videolayer. OSD is drawn on graphic layer and holds
the alpha values for full alpha blending. The argumentation for unichrome was:
to get this mode you have to videolayer->Setlevel(-1) [below graphic layer] and
enable DLOP_ALPHACHANNEL on graphic layer ;-) .
--
Stefan Lucke
? radeon_DLOP_ALPHACHANNEL.patch
Index: radeon_overlay.c
===================================================================
RCS file: /cvs/directfb/DirectFB/gfxdrivers/radeon/radeon_overlay.c,v
retrieving revision 1.7
diff -b -U3 -r1.7 radeon_overlay.c
--- radeon_overlay.c 8 Apr 2006 13:21:57 -0000 1.7
+++ radeon_overlay.c 18 Jun 2006 19:25:18 -0000
@@ -124,7 +124,7 @@
float hue );
#define OV0_SUPPORTED_OPTIONS \
- ( DLOP_DST_COLORKEY | DLOP_OPACITY | DLOP_DEINTERLACING )
+ ( DLOP_DST_COLORKEY | DLOP_OPACITY | DLOP_DEINTERLACING | DLOP_ALPHACHANNEL)
/**********************/
@@ -157,7 +157,7 @@
DLCAPS_BRIGHTNESS | DLCAPS_CONTRAST |
DLCAPS_SATURATION | DLCAPS_HUE |
DLCAPS_DST_COLORKEY | DLCAPS_OPACITY |
- DLCAPS_DEINTERLACING;
+ DLCAPS_ALPHACHANNEL | DLCAPS_DEINTERLACING;
snprintf( description->name,
DFB_DISPLAY_LAYER_DESC_NAME_LENGTH,
@@ -674,6 +674,14 @@
0x00ff0000 |
(config->opacity << 24);
}
+ else if (config->options & DLOP_ALPHACHANNEL) {
+ rovl->regs.KEY_CNTL = GRAPHIC_KEY_FN_FALSE |
+ VIDEO_KEY_FN_FALSE |
+ CMP_MIX_AND;
+ rovl->regs.MERGE_CNTL = DISP_ALPHA_MODE_PER_PIXEL |
+ 0x00ff0000 | /* graphic alpha */
+ 0xff000000; /* overlay alpha */
+ }
else {
rovl->regs.KEY_CNTL = CMP_MIX_AND;
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