Renderer: implement using OpenGL textures from a texture id

Change-Id: Ifc65966c50cb6fc8780206852f92bf1d4a6b4d5b
Task-number: QTBUG-69918
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/src/render/texture/apitexturemanager_p.h b/src/render/texture/apitexturemanager_p.h
index 58e6e6420..79dc9af94 100644
--- a/src/render/texture/apitexturemanager_p.h
+++ b/src/render/texture/apitexturemanager_p.h
@@ -257,6 +257,19 @@ public:
         return true;
     }
 
+    // Change the texture's referenced texture Id from a shared context
+    bool setSharedTextureId(APITexture *tex, int textureId)
+    {
+        Q_ASSERT(tex);
+
+        if (isShared(tex))
+            return false;
+
+        tex->setSharedTextureId(textureId);
+        m_updatedTextures.push_back(tex);
+        return true;
+    }
+
     // Retrieves abandoned textures. This should be regularly called from the OpenGL thread
     // to make sure needed GL resources are de-allocated.
     QVector<APITexture*> takeAbandonedTextures()
@@ -344,6 +357,7 @@ private:
         newTex->setProperties(node->properties());
         newTex->setParameters(node->parameters());
         newTex->setImages(texImgs);
+        newTex->setSharedTextureId(node->sharedTextureId());
 
         m_updatedTextures.push_back(newTex);
 
diff --git a/src/render/texture/texture.cpp b/src/render/texture/texture.cpp
index b87ea9c6d..5a45d2bc9 100644
--- a/src/render/texture/texture.cpp
+++ b/src/render/texture/texture.cpp
@@ -325,6 +325,8 @@ void Texture::initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &chan
         addTextureImage(imgId);
 
     addDirtyFlag(DirtyFlags(DirtyImageGenerators|DirtyProperties|DirtyParameters));
+    if (m_sharedTextureId > 0)
+        addDirtyFlag(DirtySharedTextureId);
 }