visu_openGL

visu_openGL — Define the OS dependent routines related to OpenGL.

Synopsis

#define             GDKGLEXT_MULTIHEAD_SUPPORT
#define             IMPL_GTKGLEXT
#define             IMPL_BUILTIN_X11
#define             IMPL_BUILTIN_WIN32
                    VisuPixmapContext;
GArray*             visuOpenGLGet_pixmapData            (guint width,
                                                         guint height,
                                                         gboolean hasAlpha);
VisuPixmapContext*  visu_pixmap_context_new             (guint width,
                                                         guint height);
void                visu_pixmap_context_free            (VisuPixmapContext *dumpData);
GLuint              visuOpenGLinit_fontList             (guint size);
GdkGLConfig*        visuOpenGLGet_glConfig              (GdkScreen *screen);
XVisualInfo*        visuOpenGLGet_visualInfo            (Display *dpy,
                                                         int screenId);
void                visuOpenGLSetup_pixelFormat         (HDC hDC);

Description

TODO

Details

GDKGLEXT_MULTIHEAD_SUPPORT

  #define GDKGLEXT_MULTIHEAD_SUPPORT

IMPL_GTKGLEXT

  #define IMPL_GTKGLEXT

IMPL_BUILTIN_X11

  #define IMPL_BUILTIN_X11

IMPL_BUILTIN_WIN32

  #define IMPL_BUILTIN_WIN32

VisuPixmapContext

typedef struct _VisuPixmapContext VisuPixmapContext;

Short way to address VisuPixmapContext_struct objects.


visuOpenGLGet_pixmapData ()

GArray*             visuOpenGLGet_pixmapData            (guint width,
                                                         guint height,
                                                         gboolean hasAlpha);

Dump the pixels of the current GL area, assuming that its size is given by widthx@height. This method should not be used directly, see openGLWidgetGet_pixmapData() to dump a given OpenGL area.

width :

an integer ;

height :

an integer ;

hasAlpha :

if TRUE, read also the alpha channel.

Returns :

newly allocated dump data (use g_free() after use).. transfer none. element-type int8.

visu_pixmap_context_new ()

VisuPixmapContext*  visu_pixmap_context_new             (guint width,
                                                         guint height);

Create a pixmap storage and a context associated to it. This pixmap can then be used to dump pixel data from an OpenGL area.

width :

an integer ;

height :

an integer.

Returns :

a newly allocated DumpImage object.. transfer none.

visu_pixmap_context_free ()

void                visu_pixmap_context_free            (VisuPixmapContext *dumpData);

Free an allocated DumpImage.

dumpData :

an allocated DumpImage object.

visuOpenGLinit_fontList ()

GLuint              visuOpenGLinit_fontList             (guint size);

This method create a list with a default font.

size :

the size of the text.

Returns :

the GL id of the list storing the font.

visuOpenGLGet_glConfig ()

GdkGLConfig*        visuOpenGLGet_glConfig              (GdkScreen *screen);

Call gdk_gl_config_new_for_screen(), trying to acquire a RGBA visual with stereo capabilities. This method is used internaly and should not be used elsewhere.

screen :

a GdkScreen.

Returns :

a matching GdkGLConfig.

visuOpenGLGet_visualInfo ()

XVisualInfo*        visuOpenGLGet_visualInfo            (Display *dpy,
                                                         int screenId);

Call glXChooseVisual(), trying to acquire a RGBA visual with stereo capabilities. This method is used internaly and should not be used elsewhere.

dpy :

an X display ;

screenId :

an X screen id.

Returns :

an allocated XVisualInfo.

visuOpenGLSetup_pixelFormat ()

void                visuOpenGLSetup_pixelFormat         (HDC hDC);

Call ChoosePixelFormat() and SetPixelFormat(), trying to acquire a RGBA visual. This method is used internaly and should not be used elsewhere.

hDC :

an HDC.