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nir/lower_clip: add create_clipdist_vars() helper

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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Timothy Arceri
2019-06-28 10:35:11 +10:00
parent e38b930876
commit a59926b3ca
1 changed files with 18 additions and 16 deletions
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34
src/compiler/nir/nir_lower_clip.c
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@@ -64,6 +64,20 @@ create_clipdist_var(nir_shader *shader, unsigned drvloc,
return var; return var;
} }
static void
create_clipdist_vars(nir_shader *shader, nir_variable **io_vars,
unsigned ucp_enables, int *drvloc, bool output)
{
if (ucp_enables & 0x0f)
io_vars[0] =
create_clipdist_var(shader, ++(*drvloc), output,
VARYING_SLOT_CLIP_DIST0);
if (ucp_enables & 0xf0)
io_vars[1] =
create_clipdist_var(shader, ++(*drvloc), output,
VARYING_SLOT_CLIP_DIST1);
}
static void static void
store_clipdist_output(nir_builder *b, nir_variable *out, nir_ssa_def **val) store_clipdist_output(nir_builder *b, nir_variable *out, nir_ssa_def **val)
{ {
@@ -235,13 +249,8 @@ nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables, bool use_vars)
} }
} }
/* insert CLIPDIST outputs: */ /* insert CLIPDIST outputs */
if (ucp_enables & 0x0f) create_clipdist_vars(shader, out, ucp_enables, &maxloc, true);
out[0] =
create_clipdist_var(shader, ++maxloc, true, VARYING_SLOT_CLIP_DIST0);
if (ucp_enables & 0xf0)
out[1] =
create_clipdist_var(shader, ++maxloc, true, VARYING_SLOT_CLIP_DIST1);
for (int plane = 0; plane < MAX_CLIP_PLANES; plane++) { for (int plane = 0; plane < MAX_CLIP_PLANES; plane++) {
if (ucp_enables & (1 << plane)) { if (ucp_enables & (1 << plane)) {
@@ -334,15 +343,8 @@ nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables)
/* The shader won't normally have CLIPDIST inputs, so we /* The shader won't normally have CLIPDIST inputs, so we
* must add our own: * must add our own:
*/ */
/* insert CLIPDIST outputs: */ /* insert CLIPDIST inputs */
if (ucp_enables & 0x0f) create_clipdist_vars(shader, in, ucp_enables, &maxloc, false);
in[0] =
create_clipdist_var(shader, ++maxloc, false,
VARYING_SLOT_CLIP_DIST0);
if (ucp_enables & 0xf0)
in[1] =
create_clipdist_var(shader, ++maxloc, false,
VARYING_SLOT_CLIP_DIST1);
nir_foreach_function(function, shader) { nir_foreach_function(function, shader) {
if (!strcmp(function->name, "main")) if (!strcmp(function->name, "main"))