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

glsl/lower_output_reads: bail early in tessellation control shaders

Browse Source 
This whole pass is a no-op.

Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2016-11-17 21:52:32 +01:00
parent 0d383a79a8
commit a3b98edf6f
1 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/compiler/glsl/lower_output_reads.cpp
View File

@@ -96,8 +96,6 @@ output_read_remover::visit(ir_dereference_variable *ir)
{
if (ir->var->data.mode != ir_var_shader_out)
return visit_continue;
if (stage == MESA_SHADER_TESS_CTRL)
return visit_continue;
hash_entry *entry = _mesa_hash_table_search(replacements, ir->var);
ir_variable *temp = entry ? (ir_variable *) entry->data : NULL;
@@ -173,6 +171,12 @@ output_read_remover::visit_leave(ir_function_signature *sig)
void
lower_output_reads(unsigned stage, exec_list *instructions)
{
/* Due to the possible interactions between multiple tessellation control
* shader invocations, we leave output variables as-is.
*/
if (stage == MESA_SHADER_TESS_CTRL)
return;
output_read_remover v(stage);
visit_list_elements(&v, instructions);
}