| 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 |