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i965/miptree: Drop an if case from retile_as_linear

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Drop an if statement whose predicate never evaluates to true. row_pitch
belongs to a surface with non-linear tiling. According to
isl_calc_tiled_min_row_pitch, the pitch is a multiple of the tile width.
By looking at isl_tiling_get_info, we see that non-linear tilings have
widths greater than or equal to 128B.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit 3df201e3e8)
This commit is contained in:
Nanley Chery 2018-05-23 15:50:14 -07:00 • committed by Dylan Baker
parent b9c903b406
commit 32331a3efc
1 changed files with 0 additions and 4 deletions
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src/mesa/drivers/dri/i965/intel_mipmap_tree.c
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@ -518,10 +518,6 @@ need_to_retile_as_linear(struct brw_context *brw, unsigned row_pitch,
if (tiling == ISL_TILING_LINEAR)
return false;
/* If the width is much smaller than a tile, don't bother tiling. */
if (row_pitch < 64)
return true;
if (ALIGN(row_pitch, 512) >= 32768) {
perf_debug("row pitch %u too large to blit, falling back to untiled",
row_pitch);