X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f5318dd5d1689cded4c52263b7436c1c8c247aa9..58d424d7e15e3b1fd88ef0adfe280b006250a54c:/include/wx/glcanvas.h diff --git a/include/wx/glcanvas.h b/include/wx/glcanvas.h index 4e3e4328b8..b3d3c5d43e 100644 --- a/include/wx/glcanvas.h +++ b/include/wx/glcanvas.h @@ -16,71 +16,234 @@ #if wxUSE_GLCANVAS -//--------------------------------------------------------------------------- -// Constants for attriblist -//--------------------------------------------------------------------------- +#include "wx/app.h" +#include "wx/palette.h" +#include "wx/window.h" + +class WXDLLIMPEXP_FWD_GL wxGLCanvas; +class WXDLLIMPEXP_FWD_GL wxGLContext; -// The generic GL implementation doesn't support most of these options, -// such as stereo, auxiliary buffers, alpha channel, and accum buffer. -// Other implementations may actually support them. +// ---------------------------------------------------------------------------- +// 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 */ - 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 doublebuffer */ - 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_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 antialising 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 }; -#define wxGLCanvasName _T("GLCanvas") +// ---------------------------------------------------------------------------- +// 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/x11/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" + #include "wx/gtk/glcanvas.h" #elif defined(__WXGTK__) -#include "wx/gtk1/glcanvas.h" -#elif defined(__WXX11__) -#include "wx/x11/glcanvas.h" + #include "wx/gtk1/glcanvas.h" #elif defined(__WXMAC__) -#include "wx/mac/glcanvas.h" + #include "wx/osx/glcanvas.h" #elif defined(__WXCOCOA__) -#include "wx/cocoa/glcanvas.h" + #include "wx/cocoa/glcanvas.h" #else -#error "wxGLCanvas not supported in this wxWidgets port" + #error "wxGLCanvas not supported in this wxWidgets port" #endif -#include "wx/app.h" -class WXDLLIMPEXP_GL 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_