feat: SG-43947: Present through Vulkan for 10-bit output on Linux and Windows

src/bin/apps/rv/main.cpp

@@ -376,25 +376,10 @@ int utf8Main(int argc, char* argv[])
     // without an explicit, ordering-sensitive setShareContext() call. Must be
     // set before the QApplication is constructed.
     //
-    // The Vulkan presentation path depends on this as well: there is no GLView
-    // to chain from, so the offscreen presentation context joins this global
-    // group instead (see QTVulkanVideoDevice::ensureGLContext). Otherwise FTGL
-    // font-atlas glyph uploads land in a context where the atlas texture has no
-    // storage.
+    // The Vulkan path also relies on it: QTVulkanVideoDevice::ensureGLContext()
+    // has no GLView to share with, so it joins this global group.
     QApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
 
-    // Render Qt Quick through OpenGL, matching the graphics API RV's windows
-    // composite with.
-    //
-    // Qt Quick's RHI backend defaults to Direct3D 11 on Windows. RV's top-level
-    // windows composite with OpenGL (GLView realizes the window up front, before
-    // any render-to-texture widget joins the tree), and a QQuickWidget cannot
-    // obtain a QRhi from a window using a different API. Without this, anything
-    // Quick-based inside an RV window -- most visibly a QWebEngineView, whose
-    // page is rendered by a QQuickWidget -- silently draws nothing and logs "The
-    // top-level window is not using the expected graphics API for composition"
-    // followed by "Attempted to render scene with no rhi".
-    //
 #ifdef PLATFORM_WINDOWS
     // Put Qt Quick on the same graphics API RV's windows composite with.
     //

src/lib/app/RvApp/Options.cpp

@@ -71,7 +71,6 @@ namespace Rv
         else if (name == "threads")
             stl_ext::thread_group::debug_all(true);
         else if (name == "gpu")
-            // Enables GLView format baseline, ImageRenderer GL reporting, and Vulkan presentation/interop diagnostics.
             ImageRenderer::debugGpu(true);
         else if (name == "audio")
         {

src/lib/app/RvCommon/CMakeLists.txt

@@ -89,7 +89,18 @@ IF(RV_TARGET_LINUX
     MESSAGE(FATAL_ERROR "Vulkan::Vulkan target is missing; cmake/dependencies/vulkan.cmake should provide it on Linux and Windows")
   ENDIF()
   MESSAGE(STATUS "Vulkan: using managed Vulkan ${RV_DEPS_VULKAN_VERSION}")
-  LIST(APPEND _sources VulkanView.cpp QTVulkanVideoDevice.cpp RvCommon/VulkanView.h RvCommon/QTVulkanVideoDevice.h)
+  LIST(
+    APPEND
+    _sources
+    VulkanView.cpp
+    VulkanWindow.cpp
+    QTVulkanVideoDevice.cpp
+    VulkanDesktopVideoDevice.cpp
+    RvCommon/VulkanView.h
+    RvCommon/VulkanWindow.h
+    RvCommon/QTVulkanVideoDevice.h
+    RvCommon/VulkanDesktopVideoDevice.h
+  )
 ENDIF()
 
 FILE(GLOB _ui_sources ui/*.ui)
@@ -164,7 +175,7 @@ IF(NOT
    (RV_TARGET_LINUX
     OR RV_TARGET_WINDOWS)
 )
-  LIST(REMOVE_ITEM _files_to_moc "RvCommon/VulkanView.h" "RvCommon/QTVulkanVideoDevice.h")
+  LIST(REMOVE_ITEM _files_to_moc "RvCommon/VulkanView.h" "RvCommon/VulkanWindow.h" "RvCommon/QTVulkanVideoDevice.h" "RvCommon/VulkanDesktopVideoDevice.h")
 ENDIF()
 
 FOREACH(