OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nir/lower_tex: Add some helpers for working with tex sources

Browse Source 
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-dev@lists.freedesktop.org>
This commit is contained in:
Jason Ekstrand
2016-07-20 20:40:43 -07:00
parent 09135cd55a
commit 843fc8f3e7
1 changed files with 30 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
src/compiler/nir/nir_lower_tex.c
View File

@@ -38,16 +38,39 @@
#include "nir.h" #include "nir.h"
#include "nir_builder.h" #include "nir_builder.h"
static int
tex_instr_find_src(nir_tex_instr *tex, nir_tex_src_type src_type)
{
for (unsigned i = 0; i < tex->num_srcs; i++) {
if (tex->src[i].src_type == src_type)
return i;
}
return -1;
}
static void
tex_instr_remove_src(nir_tex_instr *tex, unsigned src_idx)
{
assert(src_idx < tex->num_srcs);
/* First rewrite the source to NIR_SRC_INIT */
nir_instr_rewrite_src(&tex->instr, &tex->src[src_idx].src, NIR_SRC_INIT);
/* Now, move all of the other sources down */
for (unsigned i = src_idx + 1; i < tex->num_srcs; i++) {
tex->src[i-1].src_type = tex->src[i].src_type;
nir_instr_move_src(&tex->instr, &tex->src[i-1].src, &tex->src[i].src);
}
tex->num_srcs--;
}
static void static void
project_src(nir_builder *b, nir_tex_instr *tex) project_src(nir_builder *b, nir_tex_instr *tex)
{ {
/* Find the projector in the srcs list, if present. */ /* Find the projector in the srcs list, if present. */
unsigned proj_index; int proj_index = tex_instr_find_src(tex, nir_tex_src_projector);
for (proj_index = 0; proj_index < tex->num_srcs; proj_index++) { if (proj_index < 0)
if (tex->src[proj_index].src_type == nir_tex_src_projector)
break;
}
if (proj_index == tex->num_srcs)
return; return;
b->cursor = nir_before_instr(&tex->instr); b->cursor = nir_before_instr(&tex->instr);
@@ -102,16 +125,7 @@ project_src(nir_builder *b, nir_tex_instr *tex)
nir_src_for_ssa(projected)); nir_src_for_ssa(projected));
} }
/* Now move the later tex sources down the array so that the projector tex_instr_remove_src(tex, proj_index);
* disappears.
*/
nir_instr_rewrite_src(&tex->instr, &tex->src[proj_index].src,
NIR_SRC_INIT);
for (unsigned i = proj_index + 1; i < tex->num_srcs; i++) {
tex->src[i-1].src_type = tex->src[i].src_type;
nir_instr_move_src(&tex->instr, &tex->src[i-1].src, &tex->src[i].src);
}
tex->num_srcs--;
} }
static nir_ssa_def * static nir_ssa_def *