vulkaninfo: bitmask printers check for 0 value

Only generate the early exit if there doesn't exist an bitmask which has a
value of 0. For example, VK_RESOLVE_MODE_NONE has a value of 0, but it would
never be printed without this special case.

1 files changed, 5 insertions, 2 deletions

diff --git a/scripts/vulkaninfo_generator.py b/scripts/vulkaninfo_generator.py
index 50bfcfb0..e7381e8b 100644
--- a/scripts/vulkaninfo_generator.py
+++ b/scripts/vulkaninfo_generator.py
@@ -430,9 +430,12 @@ def PrintEnum(enum, gen):
 
 def PrintGetFlagStrings(name, bitmask):
     out = ''
-    out += f"std::vector<const char *>{name}GetStrings({name} value) {{\n"
+    out += f"std::vector<const char *> {name}GetStrings({name} value) {{\n"
     out += f"    std::vector<const char *> strings;\n"
-    out += f"    if (value == 0) {{ strings.push_back(\"None\"); return strings; }}\n"
+    # If a bitmask contains a field whose value is zero, we want to support printing the correct bitflag
+    # Otherwise, use "None" for when there are not bits set in the bitmask
+    if bitmask.options[0].value != "0":
+        out += f"    if (value == 0) {{ strings.push_back(\"None\"); return strings; }}\n"
     for v in bitmask.options:
         out += f"    if ({v.name} & value) strings.push_back(\"{str(v.name[3:])}\");\n"
     out += f"    return strings;\n}}\n"