bf5f0ca2 |
1 | // Copyright (c) 2019 OPEN CASCADE SAS |
2 | // |
3 | // This file is part of Open CASCADE Technology software library. |
4 | // |
5 | // This library is free software; you can redistribute it and/or modify it under |
6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
7 | // by the Free Software Foundation, with special exception defined in the file |
8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
9 | // distribution for complete text of the license and disclaimer of any warranty. |
10 | // |
11 | // Alternatively, this file may be used under the terms of Open CASCADE |
12 | // commercial license or contractual agreement. |
13 | |
14 | #ifndef _OpenGl_AspectsProgram_Header |
15 | #define _OpenGl_AspectsProgram_Header |
16 | |
17 | #include <Graphic3d_ShaderProgram.hxx> |
18 | |
19 | class Graphic3d_Aspects; |
20 | class OpenGl_Context; |
21 | class OpenGl_ShaderProgram; |
22 | |
23 | //! OpenGl resources for custom shading program. |
24 | class OpenGl_AspectsProgram |
25 | { |
26 | public: |
27 | DEFINE_STANDARD_ALLOC |
28 | public: |
29 | //! Empty constructor. |
30 | OpenGl_AspectsProgram() : myIsShaderReady (false) {} |
31 | |
32 | //! Return shading program. |
33 | const Handle(OpenGl_ShaderProgram)& ShaderProgram (const Handle(OpenGl_Context)& theCtx, |
34 | const Handle(Graphic3d_ShaderProgram)& theShader) |
35 | { |
36 | if (!myIsShaderReady) |
37 | { |
38 | build (theCtx, theShader); |
39 | myIsShaderReady = true; |
40 | } |
41 | return myShaderProgram; |
42 | } |
43 | |
44 | //! Update shader resource up-to-date state. |
45 | Standard_EXPORT void UpdateRediness (const Handle(Graphic3d_Aspects)& theAspect); |
46 | |
47 | //! Release resource. |
48 | Standard_EXPORT void Release (OpenGl_Context* theCtx); |
49 | |
50 | private: |
51 | |
52 | //! Build shader resource. |
53 | Standard_EXPORT void build (const Handle(OpenGl_Context)& theCtx, |
54 | const Handle(Graphic3d_ShaderProgram)& theShader); |
55 | |
56 | private: |
57 | |
58 | Handle(OpenGl_ShaderProgram) myShaderProgram; |
59 | TCollection_AsciiString myShaderProgramId; |
60 | Standard_Boolean myIsShaderReady; |
61 | }; |
62 | |
63 | #endif // _OpenGl_Aspects_Header |