1 /* $Id: context.h,v 1.4 1999/11/24 18:48:31 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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13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
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
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 * There are three Mesa datatypes which are meant to be used by device
38 * GLcontext: this contains the Mesa rendering state
39 * GLvisual: this describes the color buffer (rgb vs. ci), whether
40 * or not there's a depth buffer, stencil buffer, etc.
41 * GLframebuffer: contains pointers to the depth buffer, stencil
42 * buffer, accum buffer and alpha buffers.
44 * These types should be encapsulated by corresponding device driver
45 * datatypes. See xmesa.h and xmesaP.h for an example.
47 * In OOP terms, GLcontext, GLvisual, and GLframebuffer are base classes
48 * which the device driver must derive from.
50 * The following functions create and destroy these datatypes.
55 * Create/destroy a GLvisual. A GLvisual is like a GLX visual. It describes
56 * the colorbuffer, depth buffer, stencil buffer and accum buffer which will
57 * be used by the GL context and framebuffer.
59 extern GLvisual
*gl_create_visual( GLboolean rgbFlag
,
72 extern void gl_destroy_visual( GLvisual
*vis
);
76 * Create/destroy a GLcontext. A GLcontext is like a GLX context. It
77 * contains the rendering state.
79 extern GLcontext
*gl_create_context( GLvisual
*visual
,
80 GLcontext
*share_list
,
84 extern void gl_destroy_context( GLcontext
*ctx
);
86 /* Called by the driver after both the context and driver are fully
87 * initialized. Currently just reads the config file.
89 extern void gl_context_initialize( GLcontext
*ctx
);
92 extern void gl_copy_context(const GLcontext
*src
, GLcontext
*dst
, GLuint mask
);
96 * Create/destroy a GLframebuffer. A GLframebuffer is like a GLX drawable.
97 * It bundles up the depth buffer, stencil buffer and accum buffers into a
100 extern GLframebuffer
*gl_create_framebuffer( GLvisual
*visual
);
102 extern void gl_destroy_framebuffer( GLframebuffer
*buffer
);
106 extern void gl_make_current( GLcontext
*ctx
, GLframebuffer
*buffer
);
108 extern void gl_make_current2( GLcontext
*ctx
, GLframebuffer
*drawBuffer
,
109 GLframebuffer
*readBuffer
);
111 extern GLcontext
*gl_get_current_context(void);
116 * A seperate GLcontext for each thread
119 #define GET_CURRENT_CONTEXT(C) GLcontext *C = gl_get_current_context()
121 #define GET_IMMEDIATE struct immediate *IM = (gl_get_current_context())->input;
122 #define SET_IMMEDIATE(ctx, im) \
130 * All threads use same pointer to current context.
132 extern GLcontext
*_mesa_current_context
;
133 extern struct immediate
*CURRENT_INPUT
;
134 #define GET_CURRENT_CONTEXT(C) GLcontext *C = _mesa_current_context
136 #define GET_IMMEDIATE struct immediate *IM = CURRENT_INPUT
137 #define SET_IMMEDIATE(ctx, im) \
140 CURRENT_INPUT = im; \
149 _mesa_swapbuffers(GLcontext
*ctx
);
151 extern struct _glapi_table
*
152 _mesa_get_dispatch(GLcontext
*ctx
);
157 * GL_MESA_resize_buffers extension
159 extern void _mesa_ResizeBuffersMESA( void );
167 extern void gl_problem( const GLcontext
*ctx
, const char *s
);
169 extern void gl_warning( const GLcontext
*ctx
, const char *s
);
171 extern void gl_error( GLcontext
*ctx
, GLenum error
, const char *s
);
172 extern void gl_compile_error( GLcontext
*ctx
, GLenum error
, const char *s
);
175 extern void gl_update_state( GLcontext
*ctx
);
179 extern void gl_print_state( const char *msg
, GLuint state
);
182 extern void gl_print_enable_flags( const char *msg
, GLuint flags
);
186 extern GLdouble
gl_time( void );