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sna/gen5: Prefer using the BLT for many solid fills 

Even if it means incurring a context switch, the BLT unit is
significantly faster so long as we do enough fills. And there is the
catch ;-)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-11-04 15:55:15 +00:00
parent 703cf8abdb
commit 4ba55c3d11
1 changed files with 13 additions and 2 deletions
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15
src/sna/gen5_render.c
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@ -51,6 +51,8 @@
#define NO_COMPOSITE_SPANS 0
#define PREFER_BLT_FILL 1
#define DBG_NO_STATE_CACHE 0
#define DBG_NO_SURFACE_CACHE 0
@ -2643,6 +2645,15 @@ gen5_fill_bind_surfaces(struct sna *sna,
gen5_emit_state(sna, op, offset);
}
static inline bool prefer_blt_fill(struct sna *sna)
{
#if PREFER_BLT_FILL
return true;
#else
return sna->kgem.mode != KGEM_RENDER;
#endif
}
static Bool
gen5_render_fill_boxes(struct sna *sna,
CARD8 op,
@ -2663,7 +2674,7 @@ gen5_render_fill_boxes(struct sna *sna,
return FALSE;
}
if (sna->kgem.mode != KGEM_RENDER ||
if (prefer_blt_fill(sna) ||
dst->drawable.width > 8192 ||
dst->drawable.height > 8192 ||
!gen5_check_dst_format(format)) {
@ -2869,7 +2880,7 @@ gen5_render_fill(struct sna *sna, uint8_t alu,
{
DBG(("%s(alu=%d, color=%08x)\n", __FUNCTION__, alu, color));
if (sna->kgem.mode != KGEM_RENDER &&
if (prefer_blt_fill(sna) &&
sna_blt_fill(sna, alu,
dst_bo, dst->drawable.bitsPerPixel,
color,