1 /* $Id: context.h,v 1.2 1999/11/11 01:22:25 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
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14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
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19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
37 * A seperate GLcontext for each thread
39 extern GLcontext
*gl_get_thread_context( void );
41 #define GET_IMMEDIATE struct immediate *IM = (gl_get_thread_context())->input;
42 #define SET_IMMEDIATE(ctx, im) \
50 * All threads use same pointer to current context.
52 extern GLcontext
*_mesa_current_context
;
53 extern struct immediate
*CURRENT_INPUT
;
54 #define GET_CURRENT_CONTEXT(C) GLcontext *C = _mesa_current_context
56 #define GET_IMMEDIATE struct immediate *IM = CURRENT_INPUT
57 #define SET_IMMEDIATE(ctx, im) \
69 * There are three Mesa datatypes which are meant to be used by device
71 * GLcontext: this contains the Mesa rendering state
72 * GLvisual: this describes the color buffer (rgb vs. ci), whether
73 * or not there's a depth buffer, stencil buffer, etc.
74 * GLframebuffer: contains pointers to the depth buffer, stencil
75 * buffer, accum buffer and alpha buffers.
77 * These types should be encapsulated by corresponding device driver
78 * datatypes. See xmesa.h and xmesaP.h for an example.
80 * In OOP terms, GLcontext, GLvisual, and GLframebuffer are base classes
81 * which the device driver must derive from.
83 * The following functions create and destroy these datatypes.
88 * Create/destroy a GLvisual. A GLvisual is like a GLX visual. It describes
89 * the colorbuffer, depth buffer, stencil buffer and accum buffer which will
90 * be used by the GL context and framebuffer.
92 extern GLvisual
*gl_create_visual( GLboolean rgbFlag
,
105 extern void gl_destroy_visual( GLvisual
*vis
);
109 * Create/destroy a GLcontext. A GLcontext is like a GLX context. It
110 * contains the rendering state.
112 extern GLcontext
*gl_create_context( GLvisual
*visual
,
113 GLcontext
*share_list
,
117 extern void gl_destroy_context( GLcontext
*ctx
);
119 /* Called by the driver after both the context and driver are fully
120 * initialized. Currently just reads the config file.
122 extern void gl_context_initialize( GLcontext
*ctx
);
125 * Create/destroy a GLframebuffer. A GLframebuffer is like a GLX drawable.
126 * It bundles up the depth buffer, stencil buffer and accum buffers into a
129 extern GLframebuffer
*gl_create_framebuffer( GLvisual
*visual
);
131 extern void gl_destroy_framebuffer( GLframebuffer
*buffer
);
135 extern void gl_make_current( GLcontext
*ctx
, GLframebuffer
*buffer
);
137 extern GLcontext
*gl_get_current_context(void);
139 extern void gl_copy_context(const GLcontext
*src
, GLcontext
*dst
, GLuint mask
);
142 _mesa_swapbuffers(GLcontext
*ctx
);
144 extern struct _glapi_table
*
145 _mesa_get_dispatch(GLcontext
*ctx
);
150 * GL_MESA_resize_buffers extension
152 extern void _mesa_ResizeBuffersMESA( void );
160 extern void gl_problem( const GLcontext
*ctx
, const char *s
);
162 extern void gl_warning( const GLcontext
*ctx
, const char *s
);
164 extern void gl_error( GLcontext
*ctx
, GLenum error
, const char *s
);
165 extern void gl_compile_error( GLcontext
*ctx
, GLenum error
, const char *s
);
168 extern void gl_update_state( GLcontext
*ctx
);
172 extern void gl_print_state( const char *msg
, GLuint state
);
175 extern void gl_print_enable_flags( const char *msg
, GLuint flags
);
179 extern GLdouble
gl_time( void );