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radeon/exa: change option to determine exa pixmap usage.

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This moves to a boolean instead of using VRAM sizing.

as per Michel's suggestions on list.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-11-25 13:24:44 +10:00
parent f0acb16fa1
commit 8b28534bcf
4 changed files with 19 additions and 24 deletions
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@@ -607,14 +607,13 @@ This option enables modesetting on R/RV4xx chips using atombios.
The default is
.B off.
.TP
.BI "Option \*qEXALowVRAM\*q \*q" integer \*q
.BI "Option \*qEXAPixmaps\*q \*q" boolean \*q
(KMS Only) Under kernel modesetting to avoid thrashing pixmaps in/out
of VRAM on low memory cards, we set a threshhold for the amount of VRAM
a GPU should have before we start using VRAM to accelerate pixmaps that
aren't required to be used by the GPU. Value is in MB. This shouldn't
really be changed apart from testing.
of VRAM on low memory cards, we use a heuristic based on VRAM amount,
to determine whether to allow EXA to use VRAM for non-essential pixmaps.
This option allows us to override the heurisitc.
The default is
.B 32.
.B on with > 32MB VRAM, off with < 32MB.
.SH TEXTURED VIDEO ATTRIBUTES
The driver supports the following X11 Xv attributes for Textured Video.