[Merge] (P11): origin feat/disaggregated@86dc38a0 - its eglSwapInterval port is dev c60639db (already merged) plus ForgetRequestedSwapInterval, so an ended Magma server session no longer hands its interval to the next

MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp

@@ -345,6 +345,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
             pVulkanRenderer.reset();
             ClearProgramResourceCaches();
         }
+        // And the swap interval it asked for (DirectVulkan.h).
+        if (MG_Config::Transport != MG_Config::TransportMode::Monolith) {
+            ForgetRequestedSwapInterval();
+        }
     }
 #else
     BackendObject_DirectVulkan::~BackendObject_DirectVulkan() = default;

MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp

@@ -1756,4 +1756,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     Optional<Int> GetRequestedSwapInterval() {
         return g_requestedSwapInterval;
     }
+
+#if MOBILEGL_BUILD_DISAGGREGATED
+    void ForgetRequestedSwapInterval() {
+        g_requestedSwapInterval.reset();
+    }
+#endif
 } // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/DirectVulkan.h

@@ -151,4 +151,10 @@ namespace MobileGL::MG_Backend::DirectVulkan {
     // starts from the app's last request (GetRequestedSwapInterval) instead of the default.
     void SetSwapInterval(Int interval);
     Optional<Int> GetRequestedSwapInterval();
+#if MOBILEGL_BUILD_DISAGGREGATED
+    // The swap interval an ended server session asked for is not the next one's, the same rule as
+    // DirectGLES::ForgetRequestedSwapInterval: under a transport ~BackendObject_DirectVulkan forgets
+    // it, so the next session starts at the default until it asks.
+    void ForgetRequestedSwapInterval();
+#endif
 } // namespace MobileGL::MG_Backend::DirectVulkan