Handle all extensions for structure size calculation

Structure size is needed to parse incoming streams correctly.
This avoids emulator crashes when an unsupported extension structure is
used on the guest side.

Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>

src/gfxstream/codegen/scripts/cerealgenerator.py

@@ -171,6 +171,13 @@ SUPPORTED_MODULES = {
     "VK_KHR_swapchain" : HOST_MODULES,
 }
 
+# These modules will be used when the feature is not supported.
+# This is necessary to cover all extensions where needed.
+UNSUPPORTED_FEATURE_MODULES = {
+    "goldfish_vk_extension_structs",
+}
+
+
 REQUIRED_TYPES = {
     "int",
     "uint16_t",
@@ -789,10 +796,14 @@ class BumpPool;
             if self.featureName == supportedFeature:
                 self.featureSupported = True
 
-        if self.featureSupported == False:
+        if self.featureSupported == False and UNSUPPORTED_FEATURE_MODULES:
+            self.featureSupported = True
+            self.supportedModules = UNSUPPORTED_FEATURE_MODULES
+        elif self.featureSupported == False:
             return
+        else:
+            self.supportedModules = SUPPORTED_MODULES.get(self.featureName)
 
-        self.supportedModules = SUPPORTED_MODULES.get(self.featureName)
         self.typeInfo.onBeginFeature(self.featureName, self.featureType)
 
         self.forEachModule(