+/////////////////////////////////////////////////////////////////////////////
+// Name: wx/glcanvas.h
+// Purpose: wxGLCanvas base header
+// Author: Julian Smart
+// Modified by:
+// Created:
+// Copyright: (c) Julian Smart
+// RCS-ID: $Id$
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
#ifndef _WX_GLCANVAS_H_BASE_
#define _WX_GLCANVAS_H_BASE_
#if wxUSE_GLCANVAS
+#include "wx/app.h"
+#include "wx/palette.h"
+#include "wx/window.h"
+
+class WXDLLIMPEXP_FWD_GL wxGLCanvas;
+class WXDLLIMPEXP_FWD_GL wxGLContext;
+
+// ----------------------------------------------------------------------------
+// Constants for attributes list
+// ----------------------------------------------------------------------------
+
+// Notice that not all implementation support options such as stereo, auxiliary
+// buffers, alpha channel, and accumulator buffer, use IsDisplaySupported() to
+// check for individual attributes support.
+enum
+{
+ WX_GL_RGBA = 1, // use true color palette (on if no attrs specified)
+ WX_GL_BUFFER_SIZE, // bits for buffer if not WX_GL_RGBA
+ WX_GL_LEVEL, // 0 for main buffer, >0 for overlay, <0 for underlay
+ WX_GL_DOUBLEBUFFER, // use double buffering (on if no attrs specified)
+ WX_GL_STEREO, // use stereoscopic display
+ WX_GL_AUX_BUFFERS, // number of auxiliary buffers
+ WX_GL_MIN_RED, // use red buffer with most bits (> MIN_RED bits)
+ WX_GL_MIN_GREEN, // use green buffer with most bits (> MIN_GREEN bits)
+ WX_GL_MIN_BLUE, // use blue buffer with most bits (> MIN_BLUE bits)
+ WX_GL_MIN_ALPHA, // use alpha buffer with most bits (> MIN_ALPHA bits)
+ WX_GL_DEPTH_SIZE, // bits for Z-buffer (0,16,32)
+ WX_GL_STENCIL_SIZE, // bits for stencil buffer
+ WX_GL_MIN_ACCUM_RED, // use red accum buffer with most bits (> MIN_ACCUM_RED bits)
+ WX_GL_MIN_ACCUM_GREEN, // use green buffer with most bits (> MIN_ACCUM_GREEN bits)
+ WX_GL_MIN_ACCUM_BLUE, // use blue buffer with most bits (> MIN_ACCUM_BLUE bits)
+ WX_GL_MIN_ACCUM_ALPHA, // use alpha buffer with most bits (> MIN_ACCUM_ALPHA bits)
+ WX_GL_SAMPLE_BUFFERS, // 1 for multisampling support (antialiasing)
+ WX_GL_SAMPLES // 4 for 2x2 antialiasing supersampling on most graphics cards
+};
+
+#define wxGLCanvasName wxT("GLCanvas")
+
+// ----------------------------------------------------------------------------
+// wxGLContextBase: OpenGL rendering context
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_GL wxGLContextBase : public wxObject
+{
+public:
+ /*
+ The derived class should provide a ctor with this signature:
+
+ wxGLContext(wxGLCanvas *win, const wxGLContext *other = NULL);
+ */
+
+ // set this context as the current one
+ virtual bool SetCurrent(const wxGLCanvas& win) const = 0;
+};
+
+// ----------------------------------------------------------------------------
+// wxGLCanvasBase: window which can be used for OpenGL rendering
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_GL wxGLCanvasBase : public wxWindow
+{
+public:
+ // default ctor doesn't initialize the window, use Create() later
+ wxGLCanvasBase();
+
+ virtual ~wxGLCanvasBase();
+
+
+ /*
+ The derived class should provide a ctor with this signature:
+
+ wxGLCanvas(wxWindow *parent,
+ wxWindowID id = wxID_ANY,
+ int* attribList = 0,
+ const wxPoint& pos = wxDefaultPosition,
+ const wxSize& size = wxDefaultSize,
+ long style = 0,
+ const wxString& name = wxGLCanvasName,
+ const wxPalette& palette = wxNullPalette);
+ */
+
+ // operations
+ // ----------
+
+ // set the given context associated with this window as the current one
+ bool SetCurrent(const wxGLContext& context) const;
+
+ // flush the back buffer (if we have it)
+ virtual bool SwapBuffers() = 0;
+
+
+ // accessors
+ // ---------
+
+ // check if the given attributes are supported without creating a canvas
+ static bool IsDisplaySupported(const int *attribList);
+
+#if wxUSE_PALETTE
+ const wxPalette *GetPalette() const { return &m_palette; }
+#endif // wxUSE_PALETTE
+
+ // miscellaneous helper functions
+ // ------------------------------
+
+ // call glcolor() for the colour with the given name, return false if
+ // colour not found
+ bool SetColour(const wxString& colour);
+
+ // return true if the extension with given name is supported
+ //
+ // notice that while this function is implemented for all of GLX, WGL and
+ // AGL the extensions names are usually not the same for different
+ // platforms and so the code using it still usually uses conditional
+ // compilation
+ static bool IsExtensionSupported(const char *extension);
+
+ // deprecated methods using the implicit wxGLContext
+#if WXWIN_COMPATIBILITY_2_8
+ wxDEPRECATED( wxGLContext* GetContext() const );
+
+ wxDEPRECATED( void SetCurrent() );
+
+ wxDEPRECATED( void OnSize(wxSizeEvent& event) );
+#endif // WXWIN_COMPATIBILITY_2_8
+
+#ifdef __WXUNIVERSAL__
+ // resolve the conflict with wxWindowUniv::SetCurrent()
+ virtual bool SetCurrent(bool doit) { return wxWindow::SetCurrent(doit); };
+#endif
+
+protected:
+ // override this to implement SetColour() in GL_INDEX_MODE
+ // (currently only implemented in wxX11 and wxMotif ports)
+ virtual int GetColourIndex(const wxColour& WXUNUSED(col)) { return -1; }
+
+ // check if the given extension name is present in the space-separated list
+ // of extensions supported by the current implementation such as returned
+ // by glXQueryExtensionsString() or glGetString(GL_EXTENSIONS)
+ static bool IsExtensionInList(const char *list, const char *extension);
+
+#if wxUSE_PALETTE
+ // create default palette if we're not using RGBA mode
+ // (not supported in most ports)
+ virtual wxPalette CreateDefaultPalette() { return wxNullPalette; }
+
+ wxPalette m_palette;
+#endif // wxUSE_PALETTE
+
+#if WXWIN_COMPATIBILITY_2_8
+ wxGLContext *m_glContext;
+#endif // WXWIN_COMPATIBILITY_2_8
+};
+
+// ----------------------------------------------------------------------------
+// wxGLApp: a special wxApp subclass for OpenGL applications which must be used
+// to select a visual compatible with the given attributes
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_GL wxGLAppBase : public wxApp
+{
+public:
+ wxGLAppBase() : wxApp() { }
+
+ // use this in the constructor of the user-derived wxGLApp class to
+ // determine if an OpenGL rendering context with these attributes
+ // is available - returns true if so, false if not.
+ virtual bool InitGLVisual(const int *attribList) = 0;
+};
+
#if defined(__WXMSW__)
-#include "wx/msw/glcanvas.h"
-#elif defined(__WXMOTIF__)
-#include "wx/motif/glcanvas.h"
+ #include "wx/msw/glcanvas.h"
+#elif defined(__WXMOTIF__) || defined(__WXX11__)
+ #include "wx/x11/glcanvas.h"
+#elif defined(__WXGTK20__)
+ #include "wx/gtk/glcanvas.h"
#elif defined(__WXGTK__)
-#include "wx/gtk/glcanvas.h"
+ #include "wx/gtk1/glcanvas.h"
#elif defined(__WXMAC__)
-#include "wx/mac/glcanvas.h"
-#elif defined(__WXPM__)
-#include "wx/os2/glcanvas.h"
-#elif defined(__WXSTUBS__)
-#include "wx/stubs/glcanvas.h"
+ #include "wx/osx/glcanvas.h"
+#elif defined(__WXCOCOA__)
+ #include "wx/cocoa/glcanvas.h"
+#else
+ #error "wxGLCanvas not supported in this wxWidgets port"
#endif
-#include "wx/app.h"
-class WXDLLEXPORT wxGLApp : public wxApp
+// wxMac and wxMSW don't need anything extra in wxGLAppBase, so declare it here
+#ifndef wxGL_APP_DEFINED
+
+class WXDLLIMPEXP_GL wxGLApp : public wxGLAppBase
{
public:
- wxGLApp() : wxApp() { }
- virtual ~wxGLApp();
+ wxGLApp() : wxGLAppBase() { }
- // use this in the constructor of the user-derived wxGLApp class to
- // determine if an OpenGL rendering context with these attributes
- // is available - returns TRUE if so, FALSE if not.
- bool InitGLVisual(int *attribList);
+ virtual bool InitGLVisual(const int *attribList);
private:
DECLARE_DYNAMIC_CLASS(wxGLApp)
};
+#endif // !wxGL_APP_DEFINED
+
+// ----------------------------------------------------------------------------
+// wxGLAPI: an API wrapper that allows the use of 'old' APIs even on OpenGL
+// platforms that don't support it natively anymore, if the APIs are available
+// it's a mere redirect
+// ----------------------------------------------------------------------------
+
+#ifndef wxUSE_OPENGL_EMULATION
+ #define wxUSE_OPENGL_EMULATION 0
#endif
- // wxUSE_GLCANVAS
-#endif
- // _WX_GLCANVAS_H_BASE_
+
+class WXDLLIMPEXP_GL wxGLAPI : public wxObject
+{
+public:
+ wxGLAPI();
+ ~wxGLAPI();
+
+ static void glFrustum(GLfloat left, GLfloat right, GLfloat bottom,
+ GLfloat top, GLfloat zNear, GLfloat zFar);
+ static void glBegin(GLenum mode);
+ static void glTexCoord2f(GLfloat s, GLfloat t);
+ static void glVertex3f(GLfloat x, GLfloat y, GLfloat z);
+ static void glNormal3f(GLfloat nx, GLfloat ny, GLfloat nz);
+ static void glColor4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
+ static void glColor3f(GLfloat r, GLfloat g, GLfloat b);
+ static void glEnd();
+};
+
+#endif // wxUSE_GLCANVAS
+
+#endif // _WX_GLCANVAS_H_BASE_
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