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sna: Create a GPU for a streaming write 

If we are about to do a write-only drawing operation that will exceed
our cache, allocate a GPU bo and perform the operation inplace.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-12-24 09:59:24 +00:00
parent efc8d04fc1
commit 3bcc9f08e1
1 changed files with 17 additions and 0 deletions
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17
src/sna/sna_accel.c
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@ -888,6 +888,23 @@ sna_drawable_move_region_to_cpu(DrawablePtr drawable,
sna_pixmap_free_cpu(sna, priv);
}
}
if (priv->gpu_bo == NULL &&
sna_pixmap_choose_tiling(pixmap) != I915_TILING_NONE &&
region_inplace(sna, pixmap, region, priv)) {
sna_damage_subtract(&priv->cpu_damage, region);
if (sna_pixmap_move_to_gpu(pixmap, MOVE_WRITE)) {
pixmap->devPrivate.ptr =
kgem_bo_map(&sna->kgem, priv->gpu_bo,
PROT_WRITE);
priv->mapped = 1;
sna_damage_add(&priv->gpu_damage, region);
priv->gpu = true;
return true;
}
}
}
if (priv->mapped) {