1 /* $Id: context.h,v 1.15 2000/03/31 01:05:51 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
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10 * copy of this software and associated documentation files (the "Software"),
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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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20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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37 * There are three Mesa datatypes which are meant to be used by device
39 * GLcontext: this contains the Mesa rendering state
40 * GLvisual: this describes the color buffer (rgb vs. ci), whether
41 * or not there's a depth buffer, stencil buffer, etc.
42 * GLframebuffer: contains pointers to the depth buffer, stencil
43 * buffer, accum buffer and alpha buffers.
45 * These types should be encapsulated by corresponding device driver
46 * datatypes. See xmesa.h and xmesaP.h for an example.
48 * In OOP terms, GLcontext, GLvisual, and GLframebuffer are base classes
49 * which the device driver must derive from.
51 * The following functions create and destroy these datatypes.
56 * Create/destroy a GLvisual. A GLvisual is like a GLX visual. It describes
57 * the colorbuffer, depth buffer, stencil buffer and accum buffer which will
58 * be used by the GL context and framebuffer.
61 _mesa_create_visual( GLboolean rgbFlag
,
78 /* this function is obsolete */
79 extern GLvisual
*gl_create_visual( GLboolean rgbFlag
,
94 _mesa_destroy_visual( GLvisual
*vis
);
96 /*obsolete */ extern void gl_destroy_visual( GLvisual
*vis
);
100 * Create/destroy a GLframebuffer. A GLframebuffer is like a GLX drawable.
101 * It bundles up the depth buffer, stencil buffer and accum buffers into a
104 extern GLframebuffer
*gl_create_framebuffer( GLvisual
*visual
,
105 GLboolean softwareDepth
,
106 GLboolean softwareStencil
,
107 GLboolean softwareAccum
,
108 GLboolean softwareAlpha
);
110 extern void gl_destroy_framebuffer( GLframebuffer
*buffer
);
115 * Create/destroy a GLcontext. A GLcontext is like a GLX context. It
116 * contains the rendering state.
118 extern GLcontext
*gl_create_context( GLvisual
*visual
,
119 GLcontext
*share_list
,
123 extern GLboolean
gl_initialize_context_data( GLcontext
*ctx
,
125 GLcontext
*share_list
,
129 extern void gl_free_context_data( GLcontext
*ctx
);
131 extern void gl_destroy_context( GLcontext
*ctx
);
134 extern void gl_context_initialize( GLcontext
*ctx
);
137 extern void gl_copy_context(const GLcontext
*src
, GLcontext
*dst
, GLuint mask
);
140 extern void gl_make_current( GLcontext
*ctx
, GLframebuffer
*buffer
);
143 extern void gl_make_current2( GLcontext
*ctx
, GLframebuffer
*drawBuffer
,
144 GLframebuffer
*readBuffer
);
147 extern GLcontext
*gl_get_current_context(void);
151 * Macros for fetching current context, input buffer, etc.
155 #define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())
157 #define GET_IMMEDIATE struct immediate *IM = ((GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context()))->input
159 #define SET_IMMEDIATE(ctx, im) \
166 extern struct immediate
*_mesa_CurrentInput
;
168 #define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context
170 #define GET_IMMEDIATE struct immediate *IM = _mesa_CurrentInput
172 #define SET_IMMEDIATE(ctx, im) \
175 _mesa_CurrentInput = im; \
183 _mesa_swapbuffers(GLcontext
*ctx
);
186 extern struct _glapi_table
*
187 _mesa_get_dispatch(GLcontext
*ctx
);
195 extern void gl_problem( const GLcontext
*ctx
, const char *s
);
197 extern void gl_warning( const GLcontext
*ctx
, const char *s
);
199 extern void gl_error( GLcontext
*ctx
, GLenum error
, const char *s
);
201 extern void gl_compile_error( GLcontext
*ctx
, GLenum error
, const char *s
);
206 _mesa_Finish( void );
214 _mesa_init_no_op_table(struct _glapi_table
*exec
);
217 _mesa_init_exec_table(struct _glapi_table
*exec
);
222 extern GLdouble
gl_time( void );