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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/mac/carbon/glcanvas.cpp | |
3 | // Purpose: wxGLCanvas, for using OpenGL with wxWidgets under Macintosh | |
4 | // Author: Stefan Csomor | |
5 | // Modified by: | |
6 | // Created: 1998-01-01 | |
7 | // RCS-ID: $Id: glcanvas.cpp 54129 2008-06-11 19:30:52Z SC $ | |
8 | // Copyright: (c) Stefan Csomor | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #include "wx/wxprec.h" | |
21 | ||
22 | #if defined(__BORLANDC__) | |
23 | #pragma hdrstop | |
24 | #endif | |
25 | ||
26 | #if wxUSE_GLCANVAS | |
27 | ||
28 | #include "wx/glcanvas.h" | |
29 | ||
30 | #ifndef WX_PRECOMP | |
31 | #include "wx/frame.h" | |
32 | #include "wx/log.h" | |
33 | #include "wx/settings.h" | |
34 | #endif | |
35 | ||
36 | #include "wx/osx/private.h" | |
37 | ||
38 | // ---------------------------------------------------------------------------- | |
39 | // wxGLCanvas | |
40 | // ---------------------------------------------------------------------------- | |
41 | ||
42 | wxGLContext::wxGLContext(wxGLCanvas *win, const wxGLContext *other) | |
43 | { | |
44 | m_glContext = WXGLCreateContext(win->GetWXGLPixelFormat(), | |
45 | other ? other->m_glContext : NULL); | |
46 | } | |
47 | ||
48 | wxGLContext::~wxGLContext() | |
49 | { | |
50 | if ( m_glContext ) | |
51 | { | |
52 | WXGLDestroyContext(m_glContext); | |
53 | } | |
54 | } | |
55 | ||
56 | // ---------------------------------------------------------------------------- | |
57 | // wxGLCanvas | |
58 | // ---------------------------------------------------------------------------- | |
59 | ||
60 | IMPLEMENT_CLASS(wxGLCanvas, wxWindow) | |
61 | ||
62 | BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow) | |
63 | EVT_SIZE(wxGLCanvas::OnSize) | |
64 | END_EVENT_TABLE() | |
65 | ||
66 | wxGLCanvas::wxGLCanvas(wxWindow *parent, | |
67 | wxWindowID id, | |
68 | const int *attribList, | |
69 | const wxPoint& pos, | |
70 | const wxSize& size, | |
71 | long style, | |
72 | const wxString& name, | |
73 | const wxPalette& palette) | |
74 | { | |
75 | Create(parent, id, pos, size, style, name, attribList, palette); | |
76 | } | |
77 | ||
78 | #if WXWIN_COMPATIBILITY_2_8 | |
79 | ||
80 | wxGLCanvas::wxGLCanvas(wxWindow *parent, | |
81 | wxWindowID id, | |
82 | const wxPoint& pos, | |
83 | const wxSize& size, | |
84 | long style, | |
85 | const wxString& name, | |
86 | const int *attribList, | |
87 | const wxPalette& palette) | |
88 | { | |
89 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) | |
90 | m_glContext = new wxGLContext(this); | |
91 | } | |
92 | ||
93 | wxGLCanvas::wxGLCanvas(wxWindow *parent, | |
94 | const wxGLContext *shared, | |
95 | wxWindowID id, | |
96 | const wxPoint& pos, | |
97 | const wxSize& size, | |
98 | long style, | |
99 | const wxString& name, | |
100 | const int *attribList, | |
101 | const wxPalette& palette) | |
102 | { | |
103 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) | |
104 | m_glContext = new wxGLContext(this, shared); | |
105 | } | |
106 | ||
107 | wxGLCanvas::wxGLCanvas(wxWindow *parent, | |
108 | const wxGLCanvas *shared, | |
109 | wxWindowID id, | |
110 | const wxPoint& pos, | |
111 | const wxSize& size, | |
112 | long style, | |
113 | const wxString& name, | |
114 | const int *attribList, | |
115 | const wxPalette& palette) | |
116 | { | |
117 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) | |
118 | m_glContext = new wxGLContext(this, shared ? shared->m_glContext : NULL); | |
119 | } | |
120 | ||
121 | #endif // WXWIN_COMPATIBILITY_2_8 | |
122 | ||
123 | /* static */ | |
124 | bool wxGLCanvas::IsAGLMultiSampleAvailable() | |
125 | { | |
126 | static int s_isMultiSampleAvailable = -1; | |
127 | if ( s_isMultiSampleAvailable == -1 ) | |
128 | s_isMultiSampleAvailable = IsExtensionSupported("GL_ARB_multisample"); | |
129 | ||
130 | return s_isMultiSampleAvailable != 0; | |
131 | } | |
132 | ||
133 | /* static */ | |
134 | bool wxGLCanvasBase::IsDisplaySupported(const int *attribList) | |
135 | { | |
136 | WXGLPixelFormat glFormat = WXGLChoosePixelFormat(attribList); | |
137 | ||
138 | if ( !glFormat ) | |
139 | return false; | |
140 | ||
141 | WXGLDestroyPixelFormat(glFormat); | |
142 | ||
143 | return true; | |
144 | } | |
145 | ||
146 | bool wxGLCanvas::SwapBuffers() | |
147 | { | |
148 | WXGLContext context = WXGLGetCurrentContext(); | |
149 | wxCHECK_MSG(context, false, _T("should have current context")); | |
150 | ||
151 | WXGLSwapBuffers(context); | |
152 | return true; | |
153 | } | |
154 | ||
155 | bool wxGLCanvasBase::IsExtensionSupported(const char *extension) | |
156 | { | |
157 | // we need a valid context to query for extensions. | |
158 | WXGLPixelFormat fmt = WXGLChoosePixelFormat(NULL); | |
159 | WXGLContext ctx = WXGLCreateContext(fmt, NULL); | |
160 | if ( !ctx ) | |
161 | return false; | |
162 | ||
163 | wxString extensions = wxString::FromAscii(glGetString(GL_EXTENSIONS)); | |
164 | ||
165 | WXGLDestroyPixelFormat(fmt); | |
166 | WXGLDestroyContext(ctx); | |
167 | ||
168 | return IsExtensionInList(extensions, extension); | |
169 | } | |
170 | ||
171 | // ---------------------------------------------------------------------------- | |
172 | // wxGLApp | |
173 | // ---------------------------------------------------------------------------- | |
174 | ||
175 | bool wxGLApp::InitGLVisual(const int *attribList) | |
176 | { | |
177 | WXGLPixelFormat fmt = WXGLChoosePixelFormat(attribList); | |
178 | if ( !fmt ) | |
179 | return false; | |
180 | ||
181 | WXGLDestroyPixelFormat(fmt); | |
182 | return true; | |
183 | } | |
184 | ||
185 | #endif // wxUSE_GLCANVAS |