Fix double delete bug

Source/Native/OpenGL/GLIndexBuffer.cpp

@@ -25,10 +25,17 @@
 
 GLIndexBuffer::~GLIndexBuffer()
 {
-	if (Device && mBuffer != 0)
+	Finalize();
+}
+
+void GLIndexBuffer::Finalize()
+{
+	if (Device)
 	{
 		Device->mIndexBuffers.erase(ItBuffer);
 		Device = nullptr;
+
+		if (mBuffer != 0)
 			glDeleteBuffers(1, &mBuffer);
 		mBuffer = 0;
 	}

Source/Native/OpenGL/GLIndexBuffer.h

@@ -31,6 +31,8 @@ class GLIndexBuffer : public IndexBuffer
 public:
 	~GLIndexBuffer();
 
+	void Finalize();
+
 	GLuint GetBuffer();
 
 	GLRenderDevice* Device = nullptr;

Source/Native/OpenGL/GLRenderDevice.cpp

@@ -87,7 +87,7 @@ GLRenderDevice::~GLRenderDevice()
 		for (GLIndexBuffer* buffer : mIndexBuffers) mDeleteList.IndexBuffers.push_back(buffer);
 		for (GLVertexBuffer* buffer : mSharedVertexBuffers[0]->VertexBuffers) mDeleteList.VertexBuffers.push_back(buffer);
 		for (GLVertexBuffer* buffer : mSharedVertexBuffers[1]->VertexBuffers) mDeleteList.VertexBuffers.push_back(buffer);
-		ProcessDeleteList();
+		ProcessDeleteList(true);
 
 		glDeleteBuffers(1, &mStreamVertexBuffer);
 		glDeleteVertexArrays(1, &mStreamVAO);
@@ -965,13 +965,22 @@ void GLRenderDevice::DeleteObject(GLTexture* texture)
 		delete texture;
 }
 
-void GLRenderDevice::ProcessDeleteList()
+void GLRenderDevice::ProcessDeleteList(bool finalize)
 {
 	std::unique_lock<std::mutex> lock(GLRenderDevice::GetMutex());
 
+	if (!finalize)
+	{
 		for (auto buffer : mDeleteList.IndexBuffers) delete buffer;
 		for (auto buffer : mDeleteList.VertexBuffers) delete buffer;
 		for (auto texture : mDeleteList.Textures) delete texture;
+	}
+	else
+	{
+		for (auto buffer : mDeleteList.IndexBuffers) buffer->Finalize();
+		for (auto buffer : mDeleteList.VertexBuffers) buffer->Finalize();
+		for (auto texture : mDeleteList.Textures) texture->Finalize();
+	}
 
 	mDeleteList.IndexBuffers.clear();
 	mDeleteList.VertexBuffers.clear();

Source/Native/OpenGL/GLRenderDevice.h

@@ -106,7 +106,7 @@ public:
 	static void DeleteObject(GLIndexBuffer* buffer);
 	static void DeleteObject(GLTexture* texture);
 
-	void ProcessDeleteList();
+	void ProcessDeleteList(bool finalize = false);
 
 	std::unique_ptr<IOpenGLContext> Context;
 

Source/Native/OpenGL/GLTexture.cpp

@@ -29,6 +29,11 @@ GLTexture::GLTexture()
 }
 
 GLTexture::~GLTexture()
+{
+	Finalize();
+}
+
+void GLTexture::Finalize()
 {
 	if (Device)
 		Invalidate();

Source/Native/OpenGL/GLTexture.h

@@ -32,6 +32,8 @@ public:
 	GLTexture();
 	~GLTexture();
 
+	void Finalize();
+
 	void Set2DImage(int width, int height) override;
 	void SetCubeImage(int size) override;
 

Source/Native/OpenGL/GLVertexBuffer.cpp

@@ -72,6 +72,11 @@ void GLSharedVertexBuffer::SetupWorldVAO()
 /////////////////////////////////////////////////////////////////////////////
 
 GLVertexBuffer::~GLVertexBuffer()
+{
+	Finalize();
+}
+
+void GLVertexBuffer::Finalize()
 {
 	if (Device)
 	{

Source/Native/OpenGL/GLVertexBuffer.h

@@ -56,6 +56,8 @@ class GLVertexBuffer : public VertexBuffer
 public:
 	~GLVertexBuffer();
 
+	void Finalize();
+
 	VertexFormat Format = VertexFormat::Flat;
 
 	GLRenderDevice* Device = nullptr;