diff options
Diffstat (limited to 'mesalib/src/glsl/lower_output_reads.cpp')
| -rw-r--r-- | mesalib/src/glsl/lower_output_reads.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/mesalib/src/glsl/lower_output_reads.cpp b/mesalib/src/glsl/lower_output_reads.cpp index 415b541c3..90d71b04a 100644 --- a/mesalib/src/glsl/lower_output_reads.cpp +++ b/mesalib/src/glsl/lower_output_reads.cpp @@ -54,11 +54,27 @@ public: virtual ir_visitor_status visit_leave(class ir_function_signature *); }; +/** + * Hash function for the output variables - computes the hash of the name. + * NOTE: We're using the name string to ensure that the hash doesn't depend + * on any random factors, otherwise the output_read_remover could produce + * the random order of the assignments. + * + * NOTE: If you want to reuse this function please take into account that + * generally the names of the variables are non-unique. + */ +static unsigned +hash_table_var_hash(const void *key) +{ + const ir_variable * var = static_cast<const ir_variable *>(key); + return hash_table_string_hash(var->name); +} + output_read_remover::output_read_remover() { mem_ctx = ralloc_context(NULL); replacements = - hash_table_ctor(0, hash_table_pointer_hash, hash_table_pointer_compare); + hash_table_ctor(0, hash_table_var_hash, hash_table_pointer_compare); } output_read_remover::~output_read_remover() |