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sna: Tweak placement rules if we already have a CPU bo 

If we have a CPU bo, consider if it may be quicker to render to it then
create a GPU bo.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-09-02 09:55:07 +01:00
parent f837807cc2
commit 62e7e69d88
1 changed files with 35 additions and 15 deletions
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50
src/sna/sna_accel.c
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@ -2427,23 +2427,43 @@ sna_drawable_use_bo(DrawablePtr drawable, unsigned flags, const BoxRec *box,
goto use_cpu_bo;
}
if (priv->cpu_bo && kgem_bo_is_busy(priv->cpu_bo)) {
DBG(("%s: already using CPU bo, will not force allocation\n",
__FUNCTION__));
goto use_cpu_bo;
}
if (priv->cpu_damage && flags == 0) {
DBG(("%s: prefer cpu", __FUNCTION__));
goto use_cpu_bo;
}
if (priv->cpu_damage && !box_inplace(pixmap, box)) {
DBG(("%s: damaged with a small operation, will not force allocation\n",
__FUNCTION__));
goto use_cpu_bo;
if ((flags & IGNORE_CPU) == 0) {
if (priv->cpu_bo) {
if (to_sna_from_pixmap(pixmap)->kgem.can_blt_cpu) {
if (kgem_bo_is_busy(priv->cpu_bo)) {
DBG(("%s: already using CPU bo, will not force allocation\n",
__FUNCTION__));
goto use_cpu_bo;
}
if ((flags & RENDER_GPU) == 0) {
DBG(("%s: prefer cpu", __FUNCTION__));
goto use_cpu_bo;
}
} else {
if (kgem_bo_is_busy(priv->cpu_bo)) {
DBG(("%s: CPU bo active, must force allocation\n",
__FUNCTION__));
goto create_gpu_bo;
}
}
}
if (priv->cpu_damage) {
if ((flags & (PREFER_GPU | FORCE_GPU)) == 0) {
DBG(("%s: prefer cpu", __FUNCTION__));
goto use_cpu_bo;
}
if (!box_inplace(pixmap, box)) {
DBG(("%s: damaged with a small operation, will not force allocation\n",
__FUNCTION__));
goto use_cpu_bo;
}
}
}
create_gpu_bo:
move = MOVE_WRITE | MOVE_READ;
if (flags & FORCE_GPU)
move |= __MOVE_FORCE;