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sna: Document swizzling for DBG 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-06-23 18:51:38 +01:00
parent fd375da5ca
commit 60dbd5a5b6
1 changed files with 6 additions and 0 deletions
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6
src/sna/blt.c
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@ -487,16 +487,22 @@ void choose_memcpy_to_tiled_x(struct kgem *kgem, int swizzling)
{
switch (swizzling) {
default:
DBG(("%s: unknown swizzling, %d\n", __FUNCTION__, swizzling));
break;
case I915_BIT_6_SWIZZLE_NONE:
DBG(("%s: no swizzling\n", __FUNCTION__));
kgem->memcpy_to_tiled_x = memcpy_to_tiled_x__swizzle_0;
break;
case I915_BIT_6_SWIZZLE_9:
DBG(("%s: 6^9 swizzling\n", __FUNCTION__));
kgem->memcpy_to_tiled_x = memcpy_to_tiled_x__swizzle_9;
break;
case I915_BIT_6_SWIZZLE_9_10:
DBG(("%s: 6^9^10 swizzling\n", __FUNCTION__));
kgem->memcpy_to_tiled_x = memcpy_to_tiled_x__swizzle_9_10;
break;
case I915_BIT_6_SWIZZLE_9_11:
DBG(("%s: 6^9^11 swizzling\n", __FUNCTION__));
kgem->memcpy_to_tiled_x = memcpy_to_tiled_x__swizzle_9_11;
break;
}