1 // Created on: 2011-07-13
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
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
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.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _OpenGl_AspectLine_Header
17 #define _OpenGl_AspectLine_Header
19 #include <TCollection_AsciiString.hxx>
21 #include <Graphic3d_AspectLine3d.hxx>
22 #include <OpenGl_Element.hxx>
24 class OpenGl_ShaderProgram;
26 //! The element holding Graphic3d_AspectLine3d.
27 class OpenGl_AspectLine : public OpenGl_Element
31 //! Empty constructor.
32 Standard_EXPORT OpenGl_AspectLine();
34 //! Create and assign line aspect.
35 Standard_EXPORT OpenGl_AspectLine (const Handle(Graphic3d_AspectLine3d)& theAspect);
37 //! Return line aspect.
38 const Handle(Graphic3d_AspectLine3d)& Aspect() const { return myAspect; }
40 //! Assign line aspect.
41 Standard_EXPORT void SetAspect (const Handle(Graphic3d_AspectLine3d)& theAspect);
43 //! Init and return OpenGl shader program resource.
44 //! @return shader program resource.
45 const Handle(OpenGl_ShaderProgram)& ShaderProgramRes (const Handle(OpenGl_Context)& theCtx) const
47 if (!myResources.IsShaderReady())
49 myResources.BuildShader (theCtx, myAspect->ShaderProgram());
50 myResources.SetShaderReady();
53 return myResources.ShaderProgram;
56 Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const Standard_OVERRIDE;
57 Standard_EXPORT virtual void Release (OpenGl_Context* theContext) Standard_OVERRIDE;
59 //! Update presentation aspects parameters after their modification.
60 virtual void SynchronizeAspects() Standard_OVERRIDE { SetAspect (myAspect); }
65 mutable struct Resources
68 Resources() : myIsShaderReady (Standard_False) {}
70 Standard_Boolean IsShaderReady() const { return myIsShaderReady; }
71 void SetShaderReady() { myIsShaderReady = Standard_True; }
72 void ResetShaderReadiness() { myIsShaderReady = Standard_False; }
74 Standard_EXPORT void BuildShader (const Handle(OpenGl_Context)& theCtx,
75 const Handle(Graphic3d_ShaderProgram)& theShader);
77 Handle(OpenGl_ShaderProgram) ShaderProgram;
78 TCollection_AsciiString ShaderProgramId;
82 Standard_Boolean myIsShaderReady;
85 Handle(Graphic3d_AspectLine3d) myAspect;
91 #endif //_OpenGl_AspectLine_Header