Add epoxy_set_resolver_failure_handler()

Signed-off-by: Adam Jackson <ajax@redhat.com>
anholt · Jul 5, 2017 · 013b8cb · 013b8cb
1 parent b157a4d
commit 013b8cb
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Showing 4 changed files with 22 additions and 0 deletions.
diff --git a/include/epoxy/gl.h b/include/epoxy/gl.h
@@ -92,6 +92,11 @@ EPOXY_PUBLIC bool epoxy_has_gl_extension(const char *extension);
 EPOXY_PUBLIC bool epoxy_is_desktop_gl(void);
 EPOXY_PUBLIC int epoxy_gl_version(void);
 
+typedef void * (*epoxy_resolver_failure_handler_t)(const char *name);
+
+EPOXY_PUBLIC epoxy_resolver_failure_handler_t
+epoxy_set_resolver_failure_handler(epoxy_resolver_failure_handler_t handler);
+
 EPOXY_END_DECLS
 
 #endif /* EPOXY_GL_H */
diff --git a/src/dispatch_common.c b/src/dispatch_common.c
@@ -834,3 +834,13 @@ WRAPPER(epoxy_glEnd)(void)
 
 PFNGLBEGINPROC epoxy_glBegin = epoxy_glBegin_wrapped;
 PFNGLENDPROC epoxy_glEnd = epoxy_glEnd_wrapped;
+
+epoxy_resolver_failure_handler_t epoxy_resolver_failure_handler;
+
+epoxy_resolver_failure_handler_t
+epoxy_set_resolver_failure_handler(epoxy_resolver_failure_handler_t handler)
+{
+    epoxy_resolver_failure_handler_t old = epoxy_resolver_failure_handler;
+    epoxy_resolver_failure_handler = handler;
+    return old;
+}
diff --git a/src/dispatch_common.h b/src/dispatch_common.h
@@ -172,6 +172,8 @@ bool epoxy_extension_in_string(const char *extension_list, const char *ext);
 extern void UNWRAPPED_PROTO(glBegin_unwrapped)(GLenum primtype);
 extern void UNWRAPPED_PROTO(glEnd_unwrapped)(void);
 
+extern epoxy_resolver_failure_handler_t epoxy_resolver_failure_handler;
+
 #if USING_DISPATCH_TABLE
 void gl_init_dispatch_table(void);
 void gl_switch_to_dispatch_table(void);

diff --git a/src/gen_dispatch.py b/src/gen_dispatch.py
@@ -709,6 +709,11 @@ def write_provider_resolver(self):
         self.outln('    }')
         self.outln('')
 
+        self.outln('')
+        self.outln('    if (epoxy_resolver_failure_handler)')
+        self.outln('        return epoxy_resolver_failure_handler(name);')
+        self.outln('')
+
         # If the function isn't provided by any known extension, print
         # something useful for the poor application developer before
         # aborting.  (In non-epoxy GL usage, the app developer would