fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 13:58:04 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

i965/vec4: Simplify the computation of coord_mask and zero_mask.

Browse source 
We can easily compute these without loops, resulting in simpler and
shorter code.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Suggested-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This commit is contained in:
Kenneth Graunke 2013-09-09 15:36:59 -07:00
parent 66be7b4c27
commit 17eb1df7b8
1 changed files with 2 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
View file

@ -2221,13 +2221,10 @@ vec4_visitor::visit(ir_texture *ir)
int writemask = brw->gen == 4 ? WRITEMASK_W : WRITEMASK_X;
emit(MOV(dst_reg(MRF, param_base, lod_type, writemask), lod));
} else {
int i, coord_mask = 0, zero_mask = 0;
/* Load the coordinate */
/* FINISHME: gl_clamp_mask and saturate */
for (i = 0; i < ir->coordinate->type->vector_elements; i++)
coord_mask |= (1 << i);
for (; i < 4; i++)
zero_mask |= (1 << i);
int coord_mask = (1 << ir->coordinate->type->vector_elements) - 1;
int zero_mask = 0xf & ~coord_mask;
if (ir->offset && ir->op == ir_txf) {
/* It appears that the ld instruction used for txf does its