core: Drop Platform::supportsNativeFence()

Use Scene::supportsNativeFence() directly.

src/core/platform.cpp

@@ -20,7 +20,6 @@
 #include "outputconfiguration.h"
 #include "pointer_input.h"
 #include "qpainterbackend.h"
-#include "scene.h"
 #include "screenedge.h"
 
 namespace KWin
@@ -133,14 +132,6 @@ void Platform::removeVirtualOutput(Output *output)
     Q_ASSERT(!output);
 }
 
-bool Platform::supportsNativeFence() const
-{
-    if (Compositor *compositor = Compositor::self()) {
-        return compositor->scene()->supportsNativeFence();
-    }
-    return false;
-}
-
 EGLDisplay KWin::Platform::sceneEglDisplay() const
 {
     return m_eglDisplay;

src/core/platform.h

@@ -73,10 +73,6 @@ public:
      * The default implementation creates an InputRedirectionCursor.
      */
     virtual void createPlatformCursor(QObject *parent = nullptr);
-    /**
-     * Whether our Compositing EGL display supports creating native EGL fences.
-     */
-    bool supportsNativeFence() const;
     /**
      * The EGLDisplay used by the compositing scene.
      */

src/plugins/screencast/screencaststream.cpp

@@ -578,7 +578,7 @@ void ScreenCastStream::tryEnqueue(pw_buffer *buffer)
     // we need to insert a fence into the command stream and enqueue the pipewire buffer
     // only after the fence is signaled; otherwise stream consumers will most likely see
     // a corrupted buffer.
-    if (kwinApp()->platform()->supportsNativeFence()) {
+    if (Compositor::self()->scene()->supportsNativeFence()) {
         Q_ASSERT_X(eglGetCurrentContext(), "tryEnqueue", "no current context");
         m_pendingFence = new EGLNativeFence(kwinApp()->platform()->sceneEglDisplay());
         if (!m_pendingFence->isValid()) {