rhi: Enable registering cleanup callbacks with a key

And the ability to deregister.

Going to be required by QRhiWidget.

Change-Id: If185cbed2faa042098ac1f6bb1d6daaffd834377
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gui/rhi/qrhi_p.h b/src/gui/rhi/qrhi_p.h
index 0a0e5e4d37..926247d386 100644
--- a/src/gui/rhi/qrhi_p.h
+++ b/src/gui/rhi/qrhi_p.h
@@ -179,6 +179,16 @@ public:
         cleanupCallbacks.append(callback);
     }
 
+    void addCleanupCallback(const void *key, const QRhi::CleanupCallback &callback)
+    {
+        keyedCleanupCallbacks[key] = callback;
+    }
+
+    void removeCleanupCallback(const void *key)
+    {
+        keyedCleanupCallbacks.remove(key);
+    }
+
     bool sanityCheckGraphicsPipeline(QRhiGraphicsPipeline *ps);
     bool sanityCheckShaderResourceBindings(QRhiShaderResourceBindings *srb);
     void updateLayoutDesc(QRhiShaderResourceBindings *srb);
@@ -239,6 +249,7 @@ private:
     QHash<QRhiResource *, bool> resources;
     QSet<QRhiResource *> pendingDeleteResources;
     QVarLengthArray<QRhi::CleanupCallback, 4> cleanupCallbacks;
+    QHash<const void *, QRhi::CleanupCallback> keyedCleanupCallbacks;
     QElapsedTimer pipelineCreationTimer;
     qint64 accumulatedPipelineCreationTime = 0;