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/* GdkGLExt - OpenGL Extension to GDK
* Copyright (C) 2002-2004 Naofumi Yasufuku
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#ifdef GDKGLEXT_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#ifdef GDKGLEXT_WINDOWING_WIN32
#include <gdk/gdkwin32.h>
#endif
#include "gdkglprivate.h"
#include "gdkgldrawable.h"
#include "gdkglconfig.h"
#include "gdkglcontext.h"
#include "gdkglcontextimpl.h"
#ifdef GDKGLEXT_WINDOWING_X11
#include "x11/gdkglcontext-x11.h"
#endif
#ifdef GDKGLEXT_WINDOWING_WIN32
#include "win32/gdkglcontext-win32.h"
#endif
gboolean _gdk_gl_context_force_indirect = FALSE;
G_DEFINE_TYPE (GdkGLContext, \
gdk_gl_context, \
G_TYPE_OBJECT)
static void
gdk_gl_context_init (GdkGLContext *self)
{
GDK_GL_NOTE_FUNC_PRIVATE ();
}
static void
gdk_gl_context_class_init (GdkGLContextClass *klass)
{
GDK_GL_NOTE_FUNC_PRIVATE ();
}
/**
* gdk_gl_context_new:
* @gldrawable: a #GdkGLDrawable.
* @share_list: the #GdkGLContext with which to share display lists and texture
* objects. NULL indicates that no sharing is to take place.
* @direct: whether rendering is to be done with a direct connection to
* the graphics system.
* @render_type: GDK_GL_RGBA_TYPE.
*
* Creates a new OpenGL rendering context.
*
* Return value: the new #GdkGLContext.
**/
GdkGLContext *
gdk_gl_context_new (GdkGLDrawable *gldrawable,
GdkGLContext *share_list,
gboolean direct,
int render_type)
{
g_return_val_if_fail (GDK_IS_GL_DRAWABLE (gldrawable), NULL);
return GDK_GL_DRAWABLE_GET_CLASS (gldrawable)->create_gl_context (gldrawable,
share_list,
direct,
render_type);
}
/**
* gdk_gl_context_copy:
* @glcontext: a #GdkGLContext.
* @src: the source context.
* @mask: which portions of @src state are to be copied to @glcontext.
*
* Copy state from @src rendering context to @glcontext.
*
* @mask contains the bitwise-OR of the same symbolic names that are passed to
* the glPushAttrib() function. You can use GL_ALL_ATTRIB_BITS to copy all the
* rendering state information.
*
* Return value: FALSE if it fails, TRUE otherwise.
**/
gboolean
gdk_gl_context_copy (GdkGLContext *glcontext,
GdkGLContext *src,
unsigned long mask)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->copy_gl_context_impl (glcontext,
src,
mask);
}
/**
* gdk_gl_context_get_gl_drawable:
* @glcontext: a #GdkGLContext.
*
* Gets #GdkGLDrawable to which the @glcontext is bound.
*
* Return value: the #GdkGLDrawable or NULL if no #GdkGLDrawable is bound.
**/
GdkGLDrawable *
gdk_gl_context_get_gl_drawable (GdkGLContext *glcontext)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->get_gl_drawable (glcontext);
}
/**
* gdk_gl_context_get_gl_config:
* @glcontext: a #GdkGLContext.
*
* Gets #GdkGLConfig with which the @glcontext is configured.
*
* Return value: the #GdkGLConfig.
**/
GdkGLConfig *
gdk_gl_context_get_gl_config (GdkGLContext *glcontext)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->get_gl_config (glcontext);
}
/**
* gdk_gl_context_get_share_list:
* @glcontext: a #GdkGLContext.
*
* Gets #GdkGLContext with which the @glcontext shares the display lists and
* texture objects.
*
* Return value: the #GdkGLContext.
**/
GdkGLContext *
gdk_gl_context_get_share_list (GdkGLContext *glcontext)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->get_share_list(glcontext);
}
/**
* gdk_gl_context_is_direct:
* @glcontext: a #GdkGLContext.
*
* Returns whether the @glcontext is a direct rendering context.
*
* Return value: TRUE if the @glcontext is a direct rendering contest.
**/
gboolean
gdk_gl_context_is_direct (GdkGLContext *glcontext)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->is_direct(glcontext);
}
/**
* gdk_gl_context_get_render_type:
* @glcontext: a #GdkGLContext.
*
* Gets render_type of the @glcontext.
*
* Return value: GDK_GL_RGBA_TYPE.
**/
int
gdk_gl_context_get_render_type (GdkGLContext *glcontext)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->get_render_type(glcontext);
}
gboolean
gdk_gl_context_make_current(GdkGLContext *glcontext,
GdkGLDrawable *draw,
GdkGLDrawable *read)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (glcontext), FALSE);
return GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->make_current(glcontext,
draw,
read);
}
/**
* gdk_gl_context_release_current:
*
* Releases the current #GdkGLContext.
**/
void
gdk_gl_context_release_current ()
{
GdkGLContext *glcontext = gdk_gl_context_get_current();
g_return_if_fail(glcontext != NULL);
if (GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->make_uncurrent)
GDK_GL_CONTEXT_IMPL_GET_CLASS (glcontext->impl)->make_uncurrent(glcontext);
}
/**
* gdk_gl_context_get_current:
*
* Returns the current #GdkGLContext.
*
* Return value: the current #GdkGLContext or NULL if there is no current
* context.
**/
GdkGLContext *
gdk_gl_context_get_current ()
{
/*
* There can only be one current context. So we try each target
* and take the first non-NULL result. Hopefully the underlying
* GL implementation behaves accordingly. But we probalby need
* a better strategy here.
*/
GdkGLContext *current = NULL;
#ifdef GDKGLEXT_WINDOWING_X11
current = _gdk_x11_gl_context_impl_get_current();
#endif
#ifdef GDKGLEXT_WINDOWING_WIN32
if (current == NULL)
{
current = _gdk_win32_gl_context_impl_get_current();
}
#endif
return current;
}
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