0030748: Visualization - Marker displayed in immediate layer ruins QT Quick view...
[occt.git] / src / OpenGl / OpenGl_Element.hxx
CommitLineData
b311480e 1// Created on: 2011-08-05
2// Created by: Sergey ZERCHANINOV
973c2be1 3// Copyright (c) 2011-2014 OPEN CASCADE SAS
b311480e 4//
973c2be1 5// This file is part of Open CASCADE Technology software library.
b311480e 6//
d5f74e42 7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
b311480e 12//
973c2be1 13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
b311480e 15
2166f0fa
SK
16#ifndef OpenGl_Element_Header
17#define OpenGl_Element_Header
18
4269bd1b 19#include <OpenGl_RenderFilter.hxx>
1b661a81 20#include <Standard_Type.hxx>
2166f0fa 21
c04c30b3 22class OpenGl_Workspace;
23class OpenGl_Context;
24
a174a3c5 25//! Base interface for drawable elements.
2166f0fa
SK
26class OpenGl_Element
27{
5e27df78 28public:
2166f0fa 29
a174a3c5 30 Standard_EXPORT OpenGl_Element();
5e27df78 31
32 virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const = 0;
33
34 //! Release GPU resources.
10b9c7df 35 //! Pointer to the context is used because this method might be called
36 //! when the context is already being destroyed and usage of a handle
37 //! would be unsafe
38 virtual void Release (OpenGl_Context* theContext) = 0;
39
40 //! Pointer to the context is used because this method might be called
41 //! when the context is already being destroyed and usage of a handle
42 //! would be unsafe
5e27df78 43 template <typename theResource_t>
10b9c7df 44 static void Destroy (OpenGl_Context* theContext,
45 theResource_t*& theElement)
5e27df78 46 {
47 if (theElement == NULL)
48 {
49 return;
50 }
51
52 theElement->Release (theContext);
53 OpenGl_Element* anElement = theElement;
54 delete anElement;
55 theElement = NULL;
56 }
57
4269bd1b 58public:
59
64c6d8df 60 //! Return TRUE if primitive type generates shaded triangulation (to be used in filters).
61 virtual Standard_Boolean IsFillDrawMode() const { return false; }
62
eaac0866 63 //! Update parameters of the drawable elements.
64 virtual void SynchronizeAspects() {}
65
5e27df78 66protected:
67
a174a3c5 68 Standard_EXPORT virtual ~OpenGl_Element();
5e27df78 69
70public:
2166f0fa 71
1c35b92f 72 DEFINE_STANDARD_ALLOC
5e27df78 73
2166f0fa
SK
74};
75
a174a3c5 76#endif // OpenGl_Element_Header