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/* $Id: context.h,v 1.3 1996/09/19 03:14:49 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 2.0
* Copyright (C) 1995-1996 Brian Paul
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* $Log: context.h,v $
* Revision 1.3 1996/09/19 03:14:49 brianp
* now just one parameter for gl_create_framebuffer()
*
* Revision 1.2 1996/09/15 14:20:22 brianp
* added new functions for GLframebuffer and GLvisual support
*
* Revision 1.1 1996/09/13 01:38:16 brianp
* Initial revision
*
*/
#ifndef CONTEXT_H
#define CONTEXT_H
#include "types.h"
#ifdef THREADS
/*
* A seperate GLcontext for each thread
*/
extern GLcontext *gl_get_thread_context( void );
#else
/*
* All threads use same pointer to current context.
*/
extern GLcontext *CC;
#endif
/*
* There are three Mesa datatypes which are meant to be used by device
* drivers:
* GLcontext: this contains the Mesa rendering state
* GLvisual: this describes the color buffer (rgb vs. ci), whether
* or not there's a depth buffer, stencil buffer, etc.
* GLframebuffer: contains pointers to the depth buffer, stencil
* buffer, accum buffer and alpha buffers.
*
* These types should be encapsulated by corresponding device driver
* datatypes. See xmesa.h and xmesaP.h for an example.
*
* The following functions create and destroy these datatypes.
*/
/*
* Create/destroy a GLvisual. A GLvisual is like a GLX visual. It describes
* the colorbuffer, depth buffer, stencil buffer and accum buffer which will
* be used by the GL context and framebuffer.
*/
extern GLvisual *gl_create_visual( GLboolean rgb_flag,
GLboolean alpha_flag,
GLboolean db_flag,
GLint depth_bits,
GLint stencil_bits,
GLint accum_bits,
GLint index_bits,
GLfloat red_scale,
GLfloat green_scale,
GLfloat blue_scale,
GLfloat alpha_scale );
extern void gl_destroy_visual( GLvisual *vis );
/*
* Create/destroy a GLcontext. A GLcontext is like a GLX context. It
* contains the rendering state.
*/
extern GLcontext *gl_create_context( GLvisual *visual,
GLcontext *share_list,
void *driver_ctx );
extern void gl_destroy_context( GLcontext *ctx );
/*
* Create/destroy a GLframebuffer. A GLframebuffer is like a GLX drawable.
* It bundles up the depth buffer, stencil buffer and accum buffers into a
* single entity.
*/
extern GLframebuffer *gl_create_framebuffer( GLvisual *visual );
extern void gl_destroy_framebuffer( GLframebuffer *buffer );
extern void gl_make_current( GLcontext *ctx, GLframebuffer *buffer );
extern void gl_copy_context( GLcontext *src, GLcontext *dst,
GLuint mask );
/*
* Miscellaneous
*/
extern void gl_warning( GLcontext *ctx, const char *s );
extern void gl_error( GLcontext *ctx, GLenum error, const char *s );
extern GLenum gl_GetError( GLcontext *ctx );
extern void gl_update_state( GLcontext *ctx );
#ifdef PROFILE
extern GLdouble gl_time( void );
#endif
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.