Renderer/QRenderTargetSurfaceSelector: implement proper synchronization

This is needed to avoid rendering on a surface that has been destroyed.

Change-Id: Iadc2a32e2e0113704ca4df48df6bcdd1a0d8256c
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/render/graphicshelpers/graphicscontext_p.h b/src/render/graphicshelpers/graphicscontext_p.h
index dbedd57e0..ca5f43c7a 100644
--- a/src/render/graphicshelpers/graphicscontext_p.h
+++ b/src/render/graphicshelpers/graphicscontext_p.h
@@ -123,6 +123,7 @@ public:
     bool makeCurrent(QSurface *surface);
     void doneCurrent();
     void activateGLHelper();
+    bool hasValidGLHelper() const;
 
     void activateShader(Shader* shader);
     QOpenGLShaderProgram *containsProgram(const ProgramDNA &dna);