home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
AmigActive 2
/
AACD 2.iso
/
AACD
/
Magazine
/
GraphicsCards
/
StormMesa
/
src
/
context.h
< prev
next >
Wrap
C/C++ Source or Header
|
1999-02-04
|
4KB
|
157 lines
/* $Id: context.h,v 3.1 1998/02/13 03:17:02 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.0
* Copyright (C) 1995-1998 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 3.1 1998/02/13 03:17:02 brianp
* added basic stereo support
*
* Revision 3.0 1998/01/31 20:49:07 brianp
* initial rev
*
*/
#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.
*
* In OOP terms, GLcontext, GLvisual, and GLframebuffer are base classes
* which the device driver must derive from.
*
* 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 rgbFlag,
GLboolean alphaFlag,
GLboolean dbFlag,
GLboolean stereoFlag,
GLint depthBits,
GLint stencilBits,
GLint accumBits,
GLint indexBits,
GLint redBits,
GLint greenBits,
GLint blueBits,
GLint alphaBits );
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,
GLboolean direct);
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 GLcontext *gl_get_current_context(void);
extern void gl_copy_context(const GLcontext *src, GLcontext *dst, GLuint mask);
extern void gl_set_api_table( GLcontext *ctx, const struct gl_api_table *api );
/*
* GL_MESA_resize_buffers extension
*/
extern void gl_ResizeBuffersMESA( GLcontext *ctx );
/*
* Miscellaneous
*/
extern void gl_problem( const GLcontext *ctx, const char *s );
extern void gl_warning( const 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