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1 | // Created on: 2013-09-20 |
2 | // Created by: Denis BOGOLEPOV |
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3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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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 |
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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. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
16 | #include <OSD_File.hxx> |
17 | #include <OSD_Protection.hxx> |
18 | #include <Standard_Atomic.hxx> |
19 | #include <Graphic3d_ShaderObject.hxx> |
20 | #include <Graphic3d_GraphicDriver.hxx> |
21 | |
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22 | IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_ShaderObject,Standard_Transient) |
23 | |
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24 | namespace |
25 | { |
26 | static volatile Standard_Integer THE_SHADER_OBJECT_COUNTER = 0; |
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27 | } |
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28 | |
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29 | |
30 | // ======================================================================= |
31 | // function : Graphic3d_ShaderObject |
32 | // purpose : Creates a shader object from specified file |
33 | // ======================================================================= |
34 | Graphic3d_ShaderObject::Graphic3d_ShaderObject (const Graphic3d_TypeOfShaderObject theType) |
35 | : myType (theType) |
36 | { |
37 | myID = TCollection_AsciiString ("Graphic3d_ShaderObject_") |
38 | + TCollection_AsciiString (Standard_Atomic_Increment (&THE_SHADER_OBJECT_COUNTER)); |
39 | } |
40 | |
41 | // ======================================================================= |
42 | // function : CreatFromFile |
43 | // purpose : Creates new shader object from specified file |
44 | // ======================================================================= |
45 | Handle(Graphic3d_ShaderObject) Graphic3d_ShaderObject::CreateFromFile (const Graphic3d_TypeOfShaderObject theType, |
46 | const TCollection_AsciiString& thePath) |
47 | { |
48 | Handle(Graphic3d_ShaderObject) aShader = new Graphic3d_ShaderObject (theType); |
49 | aShader->myPath = thePath; |
50 | |
51 | OSD_File aFile (thePath); |
52 | if (!aFile.Exists()) |
53 | { |
54 | return NULL; |
55 | } |
56 | |
57 | aFile.Open (OSD_ReadOnly, OSD_Protection()); |
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58 | aFile.Read (aShader->mySource, (int)aFile.Size()); |
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59 | aFile.Close(); |
60 | |
61 | return aShader; |
62 | } |
63 | |
64 | // ======================================================================= |
65 | // function : CreatFromSource |
66 | // purpose : Creates new shader object from specified source |
67 | // ======================================================================= |
68 | Handle(Graphic3d_ShaderObject) Graphic3d_ShaderObject::CreateFromSource (const Graphic3d_TypeOfShaderObject theType, |
69 | const TCollection_AsciiString& theSource) |
70 | { |
71 | Handle(Graphic3d_ShaderObject) aShader = new Graphic3d_ShaderObject (theType); |
72 | aShader->mySource = theSource; |
73 | return aShader; |
74 | } |
75 | |
76 | // ======================================================================= |
77 | // function : ~Graphic3d_ShaderObject |
78 | // purpose : Releases resources of shader object |
79 | // ======================================================================= |
80 | Graphic3d_ShaderObject::~Graphic3d_ShaderObject() |
81 | { |
82 | // |
83 | } |
84 | |
85 | // ======================================================================= |
86 | // function : IsDone |
87 | // purpose : Checks if the shader object is valid or not |
88 | // ======================================================================= |
89 | Standard_Boolean Graphic3d_ShaderObject::IsDone() const |
90 | { |
91 | return !mySource.IsEmpty(); |
92 | } |