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- /* $Id: context.h,v 1.5 1997/02/27 19:57:38 brianp Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 2.2
- * Copyright (C) 1995-1997 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 1.5 1997/02/27 19:57:38 brianp
- * added gl_problem() function
- *
- * Revision 1.4 1997/02/10 19:49:50 brianp
- * added gl_ResizeBuffersMESA()
- *
- * 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 );
-
-
-
- /*
- * GL_MESA_resize_buffers extension
- */
- extern void gl_ResizeBuffersMESA( GLcontext *ctx );
-
-
-
- /*
- * Miscellaneous
- */
-
- extern void gl_problem( GLcontext *ctx, const char *s );
-
- 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
-