KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nir: Inline lower_clip_vs() into nir_lower_clip_vs(). 

It's now called exactly once, and there's not really any distinction.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2017-05-21 19:29:48 -07:00
parent bfa789aceb
commit 63c8696874
1 changed files with 32 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
src/compiler/nir/nir_lower_clip.c
View File

@ -150,12 +150,23 @@ find_output(nir_shader *shader, unsigned drvloc)
* VS lowering
*/
static void
lower_clip_vs(nir_function_impl *impl, unsigned ucp_enables,
nir_ssa_def *cv, nir_variable **out)
/* ucp_enables is bitmask of enabled ucps. Actual ucp values are
* passed in to shader via user_clip_plane system-values
*/
bool
nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables)
{
nir_function_impl *impl = nir_shader_get_entrypoint(shader);
nir_ssa_def *clipdist[MAX_CLIP_PLANES];
nir_builder b;
int clipvertex = -1;
int position = -1;
int maxloc = -1;
nir_ssa_def *cv;
nir_variable *out[2] = { NULL };
if (!ucp_enables)
return false;
nir_builder_init(&b, impl);
@ -171,43 +182,6 @@ lower_clip_vs(nir_function_impl *impl, unsigned ucp_enables,
assert(impl->end_block->predecessors->entries == 1);
b.cursor = nir_after_cf_list(&impl->body);
for (int plane = 0; plane < MAX_CLIP_PLANES; plane++) {
if (ucp_enables & (1 << plane)) {
nir_ssa_def *ucp = nir_load_user_clip_plane(&b, plane);
/* calculate clipdist[plane] - dot(ucp, cv): */
clipdist[plane] = nir_fdot4(&b, ucp, cv);
}
else {
/* 0.0 == don't-clip == disabled: */
clipdist[plane] = nir_imm_float(&b, 0.0);
}
}
if (ucp_enables & 0x0f)
store_clipdist_output(&b, out[0], &clipdist[0]);
if (ucp_enables & 0xf0)
store_clipdist_output(&b, out[1], &clipdist[4]);
nir_metadata_preserve(impl, nir_metadata_dominance);
}
/* ucp_enables is bitmask of enabled ucps. Actual ucp values are
* passed in to shader via user_clip_plane system-values
*/
bool
nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables)
{
nir_function_impl *impl = nir_shader_get_entrypoint(shader);
int clipvertex = -1;
int position = -1;
int maxloc = -1;
nir_ssa_def *cv;
nir_variable *out[2] = { NULL };
if (!ucp_enables)
return false;
/* find clipvertex/position outputs: */
nir_foreach_variable(var, &shader->outputs) {
int loc = var->data.driver_location;
@ -250,7 +224,24 @@ nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables)
out[1] =
create_clipdist_var(shader, ++maxloc, true, VARYING_SLOT_CLIP_DIST1);
lower_clip_vs(impl, ucp_enables, cv, out);
for (int plane = 0; plane < MAX_CLIP_PLANES; plane++) {
if (ucp_enables & (1 << plane)) {
nir_ssa_def *ucp = nir_load_user_clip_plane(&b, plane);
/* calculate clipdist[plane] - dot(ucp, cv): */
clipdist[plane] = nir_fdot4(&b, ucp, cv);
} else {
/* 0.0 == don't-clip == disabled: */
clipdist[plane] = nir_imm_float(&b, 0.0);
}
}
if (ucp_enables & 0x0f)
store_clipdist_output(&b, out[0], &clipdist[0]);
if (ucp_enables & 0xf0)
store_clipdist_output(&b, out[1], &clipdist[4]);
nir_metadata_preserve(impl, nir_metadata_dominance);
return true;
}