scripts:Allow duplicate exceptions for some ids

Added global duplicate_exceptions list at the top of the script that
is used to store any IDs that are allowed to be used multiple times
in the source. An explanation comment of all exceptions should be
included.

Initial exception included in list is VALIDATION_ERROR_00942 which is
a descriptor set update error to make sure a valid sampler is included
for relevant write updates. This is re-used for two copy updates that
may have invalid samplers.

1 files changed, 6 insertions, 3 deletions

diff --git a/layers/vk_validation_stats.py b/layers/vk_validation_stats.py
index 2f4e478b..1868bfd6 100755
--- a/layers/vk_validation_stats.py
+++ b/layers/vk_validation_stats.py
@@ -55,7 +55,10 @@ layer_source_files = [
 header_file = 'vk_validation_error_messages.h'
 # TODO : Don't hardcode linux path format if we want this to run on windows
 test_file = '../tests/layer_validation_tests.cpp'
-
+# List of enums that are allowed to be used more than once so don't warn on their duplicates
+duplicate_exceptions = [
+'VALIDATION_ERROR_00942', # This is a descriptor set write update error that we use for a couple copy cases as well
+]
 
 class ValidationDatabase:
     def __init__(self, filename=db_file):
@@ -320,7 +323,7 @@ def main(argv=None):
         if db_imp not in val_source.enum_count_dict:
             imp_not_found.append(db_imp)
     for src_enum in val_source.enum_count_dict:
-        if val_source.enum_count_dict[src_enum]['count'] > 1:
+        if val_source.enum_count_dict[src_enum]['count'] > 1 and src_enum not in duplicate_exceptions:
             multiple_uses = True
         if src_enum not in val_db.db_implemented_enums:
             imp_not_claimed.append(src_enum)
@@ -342,7 +345,7 @@ def main(argv=None):
         print(txt_color.yellow() + "  Note that some checks are used multiple times. These may be good candidates for new valid usage spec language." + txt_color.endc())
         print(txt_color.yellow() + "  Here is a list of each check used multiple times with its number of uses:" + txt_color.endc())
         for enum in val_source.enum_count_dict:
-            if val_source.enum_count_dict[enum]['count'] > 1:
+            if val_source.enum_count_dict[enum]['count'] > 1 and enum not in duplicate_exceptions:
                 print(txt_color.yellow() + "   %s: %d uses in file,line:" % (enum, val_source.enum_count_dict[enum]['count']) + txt_color.endc())
                 for file_line in val_source.enum_count_dict[enum]['file_line']:
                     print(txt_color.yellow() + "   \t%s" % (file_line) + txt_color.endc())