glapi: add KHR_no_error support to dispatch table generation

This will allows us to create no error versions of functions
noted by a _no_error suffix. We also need to set a no_error
attribute equal to "true" in the xml.

V3: stop the no_error attribute being overwritten when functions
    alias another.
V2: tidy up suggested by Nicolai.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 10 insertions, 2 deletions

diff --git a/src/mapi/glapi/gen/gl_genexec.py b/src/mapi/glapi/gen/gl_genexec.py
index 3a75419a752..37b1cc6be0d 100644
--- a/src/mapi/glapi/gen/gl_genexec.py
+++ b/src/mapi/glapi/gen/gl_genexec.py
@@ -232,8 +232,16 @@ class PrintCode(gl_XML.gl_print_base):
                 # This function is not implemented, or is dispatched
                 # dynamically.
                 continue
-            settings_by_condition[condition].append(
-                'SET_{0}(exec, {1}{0});'.format(f.name, prefix, f.name))
+            if f.has_no_error_variant:
+                no_error_condition = '_mesa_is_no_error_enabled(ctx) && ({0})'.format(condition)
+                error_condition = '!_mesa_is_no_error_enabled(ctx) && ({0})'.format(condition)
+                settings_by_condition[no_error_condition].append(
+                    'SET_{0}(exec, {1}{0}_no_error);'.format(f.name, prefix, f.name))
+                settings_by_condition[error_condition].append(
+                    'SET_{0}(exec, {1}{0});'.format(f.name, prefix, f.name))
+            else:
+                settings_by_condition[condition].append(
+                    'SET_{0}(exec, {1}{0});'.format(f.name, prefix, f.name))
         # Print out an if statement for each unique condition, with
         # the SET_* calls nested inside it.
         for condition in sorted(settings_by_condition.keys()):