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 | #include <OpenGl_AspectsProgram.hxx> |
15 | |
16 | #include <OpenGl_Context.hxx> |
17 | #include <OpenGl_ShaderManager.hxx> |
18 | #include <OpenGl_ShaderProgram.hxx> |
19 | |
20 | namespace |
21 | { |
22 | static const TCollection_AsciiString THE_EMPTY_KEY; |
23 | } |
24 | |
25 | // ======================================================================= |
26 | // function : Release |
27 | // purpose : |
28 | // ======================================================================= |
29 | void OpenGl_AspectsProgram::Release (OpenGl_Context* theCtx) |
30 | { |
31 | if (!myShaderProgram.IsNull() && theCtx != NULL) |
32 | { |
33 | theCtx->ShaderManager()->Unregister (myShaderProgramId, |
34 | myShaderProgram); |
35 | } |
36 | myShaderProgramId.Clear(); |
37 | myIsShaderReady = Standard_False; |
38 | } |
39 | |
40 | // ======================================================================= |
41 | // function : UpdateRediness |
42 | // purpose : |
43 | // ======================================================================= |
44 | void OpenGl_AspectsProgram::UpdateRediness (const Handle(Graphic3d_Aspects)& theAspect) |
45 | { |
46 | const TCollection_AsciiString& aShaderKey = theAspect->ShaderProgram().IsNull() ? THE_EMPTY_KEY : theAspect->ShaderProgram()->GetId(); |
47 | if (aShaderKey.IsEmpty() || myShaderProgramId != aShaderKey) |
48 | { |
49 | myIsShaderReady = Standard_False; |
50 | } |
51 | } |
52 | |
53 | // ======================================================================= |
54 | // function : build |
55 | // purpose : |
56 | // ======================================================================= |
57 | void OpenGl_AspectsProgram::build (const Handle(OpenGl_Context)& theCtx, |
58 | const Handle(Graphic3d_ShaderProgram)& theShader) |
59 | { |
60 | if (theCtx->core20fwd == NULL) |
61 | { |
62 | return; |
63 | } |
64 | |
65 | // release old shader program resources |
66 | if (!myShaderProgram.IsNull()) |
67 | { |
68 | theCtx->ShaderManager()->Unregister (myShaderProgramId, myShaderProgram); |
69 | myShaderProgramId.Clear(); |
70 | myShaderProgram.Nullify(); |
71 | } |
72 | if (theShader.IsNull()) |
73 | { |
74 | return; |
75 | } |
76 | |
77 | theCtx->ShaderManager()->Create (theShader, myShaderProgramId, myShaderProgram); |
78 | } |