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comparison DPF-Prymula-audioplugins/dpf/dgl/src/pugl-upstream/include/pugl/gl.h @ 3:84e66ea83026

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DPF-Prymula-audioplugins-0.231015-2
author prymula <prymula76@outlook.com>
date Mon, 16 Oct 2023 21:53:34 +0200
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2:cf2cb71d31dd 3:84e66ea83026
1 // Copyright 2012-2020 David Robillard <d@drobilla.net>
2 // SPDX-License-Identifier: ISC
3
4 #ifndef PUGL_GL_H
5 #define PUGL_GL_H
6
7 #include "pugl/pugl.h"
8
9 // IWYU pragma: begin_exports
10
11 /* Unfortunately, GL includes vary across platforms, so include them here to
12 enable pure portable programs. */
13
14 #ifndef PUGL_NO_INCLUDE_GL_H
15 # ifdef __APPLE__
16 # include <OpenGL/gl.h>
17 # else
18 # ifdef _WIN32
19 # include <windows.h>
20 # endif
21 # include <GL/gl.h>
22 # endif
23 #endif
24
25 #ifndef PUGL_NO_INCLUDE_GLU_H
26 # ifdef __APPLE__
27 # include <OpenGL/glu.h>
28 # else
29 # ifdef _WIN32
30 # include <windows.h>
31 # endif
32 # include <GL/glu.h>
33 # endif
34 #endif
35
36 // IWYU pragma: end_exports
37
38 PUGL_BEGIN_DECLS
39
40 /**
41 @defgroup gl OpenGL
42 OpenGL graphics support.
43 @ingroup pugl
44 @{
45 */
46
47 /**
48 OpenGL extension function.
49 */
50 typedef void (*PuglGlFunc)(void);
51
52 /**
53 Return the address of an OpenGL extension function.
54 */
55 PUGL_API
56 PuglGlFunc
57 puglGetProcAddress(const char* name);
58
59 /**
60 Enter the OpenGL context.
61
62 This can be used to enter the graphics context in unusual situations, for
63 doing things like loading textures. Note that this must not be used for
64 drawing, which may only be done while processing an expose event.
65 */
66 PUGL_API
67 PuglStatus
68 puglEnterContext(PuglView* view);
69
70 /**
71 Leave the OpenGL context.
72
73 This must only be called after puglEnterContext().
74 */
75 PUGL_API
76 PuglStatus
77 puglLeaveContext(PuglView* view);
78
79 /**
80 OpenGL graphics backend.
81
82 Pass the returned value to puglSetBackend() to draw to a view with OpenGL.
83 */
84 PUGL_CONST_API
85 const PuglBackend*
86 puglGlBackend(void);
87
88 PUGL_END_DECLS
89
90 /**
91 @}
92 */
93
94 #endif // PUGL_GL_H