fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-03 13:40:11 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965/blorp: Properly adjust primitive size for 8x MSAA.

Browse source 
When rendering to an IMS MSAA surface on Gen7, blorp sets up the
rendering pipeline as though it were rendering to a single-sampled
surface; accordingly it must adjust the size of the primitive it sends
down the pipeline to account for the interleaving of samples in an IMS
surface.

This patch modifies the size adjustment code to properly handle 8x
MSAA, which makes room for the extra samples by using an interleaving
pattern that is twice as wide as 4x MSAA.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Paul Berry 2012-07-17 21:06:01 -07:00
parent 17eae9762c
commit 082874e389
1 changed files with 17 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
View file

@ -1633,10 +1633,23 @@ brw_blorp_blit_params::brw_blorp_blit_params(struct brw_context *brw,
* pipeline as multisampled.
*/
assert(dst_mt->msaa_layout == INTEL_MSAA_LAYOUT_IMS);
x0 = (x0 * 2) & ~3;
y0 = (y0 * 2) & ~3;
x1 = ALIGN(x1 * 2, 4);
y1 = ALIGN(y1 * 2, 4);
switch (dst_mt->num_samples) {
case 4:
x0 = (x0 * 2) & ~3;
y0 = (y0 * 2) & ~3;
x1 = ALIGN(x1 * 2, 4);
y1 = ALIGN(y1 * 2, 4);
break;
case 8:
x0 = (x0 * 4) & ~7;
y0 = (y0 * 2) & ~3;
x1 = ALIGN(x1 * 4, 8);
y1 = ALIGN(y1 * 2, 4);
break;
default:
assert(!"Unrecognized sample count in brw_blorp_blit_params ctor");
break;
}
wm_prog_key.use_kill = true;
}