| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/osx/glcanvas_osx.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: $Id$ |
| 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 | #if wxOSX_USE_CARBON |
| 64 | EVT_SIZE(wxGLCanvas::OnSize) |
| 65 | #endif |
| 66 | END_EVENT_TABLE() |
| 67 | |
| 68 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 69 | wxWindowID id, |
| 70 | const int *attribList, |
| 71 | const wxPoint& pos, |
| 72 | const wxSize& size, |
| 73 | long style, |
| 74 | const wxString& name, |
| 75 | const wxPalette& palette) |
| 76 | { |
| 77 | Create(parent, id, pos, size, style, name, attribList, palette); |
| 78 | } |
| 79 | |
| 80 | #if WXWIN_COMPATIBILITY_2_8 |
| 81 | |
| 82 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 83 | wxWindowID id, |
| 84 | const wxPoint& pos, |
| 85 | const wxSize& size, |
| 86 | long style, |
| 87 | const wxString& name, |
| 88 | const int *attribList, |
| 89 | const wxPalette& palette) |
| 90 | { |
| 91 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) |
| 92 | m_glContext = new wxGLContext(this); |
| 93 | } |
| 94 | |
| 95 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 96 | const wxGLContext *shared, |
| 97 | wxWindowID id, |
| 98 | const wxPoint& pos, |
| 99 | const wxSize& size, |
| 100 | long style, |
| 101 | const wxString& name, |
| 102 | const int *attribList, |
| 103 | const wxPalette& palette) |
| 104 | { |
| 105 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) |
| 106 | m_glContext = new wxGLContext(this, shared); |
| 107 | } |
| 108 | |
| 109 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 110 | const wxGLCanvas *shared, |
| 111 | wxWindowID id, |
| 112 | const wxPoint& pos, |
| 113 | const wxSize& size, |
| 114 | long style, |
| 115 | const wxString& name, |
| 116 | const int *attribList, |
| 117 | const wxPalette& palette) |
| 118 | { |
| 119 | if ( Create(parent, id, pos, size, style, name, attribList, palette) ) |
| 120 | m_glContext = new wxGLContext(this, shared ? shared->m_glContext : NULL); |
| 121 | } |
| 122 | |
| 123 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 124 | |
| 125 | /* static */ |
| 126 | bool wxGLCanvas::IsAGLMultiSampleAvailable() |
| 127 | { |
| 128 | static int s_isMultiSampleAvailable = -1; |
| 129 | if ( s_isMultiSampleAvailable == -1 ) |
| 130 | s_isMultiSampleAvailable = IsExtensionSupported("GL_ARB_multisample"); |
| 131 | |
| 132 | return s_isMultiSampleAvailable != 0; |
| 133 | } |
| 134 | |
| 135 | /* static */ |
| 136 | bool wxGLCanvasBase::IsDisplaySupported(const int *attribList) |
| 137 | { |
| 138 | WXGLPixelFormat glFormat = WXGLChoosePixelFormat(attribList); |
| 139 | |
| 140 | if ( !glFormat ) |
| 141 | return false; |
| 142 | |
| 143 | WXGLDestroyPixelFormat(glFormat); |
| 144 | |
| 145 | return true; |
| 146 | } |
| 147 | |
| 148 | bool wxGLCanvasBase::IsExtensionSupported(const char *extension) |
| 149 | { |
| 150 | // we need a valid context to query for extensions. |
| 151 | WXGLPixelFormat fmt = WXGLChoosePixelFormat(NULL); |
| 152 | WXGLContext ctx = WXGLCreateContext(fmt, NULL); |
| 153 | if ( !ctx ) |
| 154 | return false; |
| 155 | |
| 156 | WXGLContext ctxOld = WXGLGetCurrentContext(); |
| 157 | WXGLSetCurrentContext(ctx); |
| 158 | |
| 159 | wxString extensions = wxString::FromAscii(glGetString(GL_EXTENSIONS)); |
| 160 | |
| 161 | WXGLSetCurrentContext(ctxOld); |
| 162 | WXGLDestroyPixelFormat(fmt); |
| 163 | WXGLDestroyContext(ctx); |
| 164 | |
| 165 | return IsExtensionInList(extensions.ToAscii(), extension); |
| 166 | } |
| 167 | |
| 168 | // ---------------------------------------------------------------------------- |
| 169 | // wxGLApp |
| 170 | // ---------------------------------------------------------------------------- |
| 171 | |
| 172 | bool wxGLApp::InitGLVisual(const int *attribList) |
| 173 | { |
| 174 | WXGLPixelFormat fmt = WXGLChoosePixelFormat(attribList); |
| 175 | if ( !fmt ) |
| 176 | return false; |
| 177 | |
| 178 | WXGLDestroyPixelFormat(fmt); |
| 179 | return true; |
| 180 | } |
| 181 | |
| 182 | #endif // wxUSE_GLCANVAS |