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i965/msaa: use ROUND_DOWN_TO macro.

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No functional change.  This patch modifies brw_blorp_blit.cpp to use
the ROUND_DOWN_TO macro instead of open-coded bit manipulations, for
clarity.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Paul Berry
2012-07-24 14:48:51 -07:00
parent f37f1a7209
commit 4df2848786
1 changed files with 6 additions and 6 deletions
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12
src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
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@@ -1733,14 +1733,14 @@ brw_blorp_blit_params::brw_blorp_blit_params(struct brw_context *brw,
assert(dst_mt->msaa_layout == INTEL_MSAA_LAYOUT_IMS); assert(dst_mt->msaa_layout == INTEL_MSAA_LAYOUT_IMS);
switch (dst_mt->num_samples) { switch (dst_mt->num_samples) {
case 4: case 4:
x0 = (x0 * 2) & ~3; x0 = ROUND_DOWN_TO(x0 * 2, 4);
y0 = (y0 * 2) & ~3; y0 = ROUND_DOWN_TO(y0 * 2, 4);
x1 = ALIGN(x1 * 2, 4); x1 = ALIGN(x1 * 2, 4);
y1 = ALIGN(y1 * 2, 4); y1 = ALIGN(y1 * 2, 4);
break; break;
case 8: case 8:
x0 = (x0 * 4) & ~7; x0 = ROUND_DOWN_TO(x0 * 4, 8);
y0 = (y0 * 2) & ~3; y0 = ROUND_DOWN_TO(y0 * 2, 4);
x1 = ALIGN(x1 * 4, 8); x1 = ALIGN(x1 * 4, 8);
y1 = ALIGN(y1 * 2, 4); y1 = ALIGN(y1 * 2, 4);
break; break;
@@ -1770,8 +1770,8 @@ brw_blorp_blit_params::brw_blorp_blit_params(struct brw_context *brw,
x_align /= (dst_mt->num_samples == 4 ? 2 : 4); x_align /= (dst_mt->num_samples == 4 ? 2 : 4);
y_align /= 2; y_align /= 2;
} }
x0 = (x0 & ~(x_align - 1)) * 2; x0 = ROUND_DOWN_TO(x0, x_align) * 2;
y0 = (y0 & ~(y_align - 1)) / 2; y0 = ROUND_DOWN_TO(y0, y_align) / 2;
x1 = ALIGN(x1, x_align) * 2; x1 = ALIGN(x1, x_align) * 2;
y1 = ALIGN(y1, y_align) / 2; y1 = ALIGN(y1, y_align) / 2;
wm_prog_key.use_kill = true; wm_prog_key.use_kill = true;