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1 /*
2  * Mesa 3-D graphics library
3  *
4  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  */
24 
25 
26 #ifndef _glxapi_h_
27 #define _glxapi_h_
28 
29 
30 #define GLX_GLXEXT_PROTOTYPES
31 #include "GL/glx.h"
32 
33 
34 /* The GLX API dispatcher (i.e. this code) is being built into stand-alone
35  * Mesa.  We don't know anything about XFree86 or real GLX so we define a
36  * minimal __GLXContextRec here so some of the functions in this file can
37  * work properly.
38  */
39 typedef struct __GLXcontextRec {
40    GLboolean isDirect;
41    GLXDrawable currentDrawable;
42    GLXDrawable currentReadable;
43    XID xid;
44 } __GLXcontext;
45 
46 
47 /*
48  * Almost all the GLX API functions get routed through this dispatch table.
49  * The exceptions are the glXGetCurrentXXX() functions.
50  *
51  * This dispatch table allows multiple GLX client-side modules to coexist.
52  * Specifically, a real GLX library (like SGI's or the Utah GLX) and Mesa's
53  * pseudo-GLX can be present at the same time.  The former being used on
54  * GLX-enabled X servers and the later on non-GLX X servers.
55  *
56  * Red Hat has been using this since Red Hat Linux 7.0 (I think).
57  * This'll be a standard feature in XFree86 4.3.  It basically allows one
58  * libGL to do both DRI-rendering and "fake GLX" rendering to X displays
59  * that lack the GLX extension.
60  */
61 struct _glxapi_table {
62    /*** GLX_VERSION_1_0 ***/
63    XVisualInfo *(*ChooseVisual)(Display *dpy, int screen, int *list);
64    void (*CopyContext)(Display *dpy, GLXContext src, GLXContext dst, unsigned long mask);
65    GLXContext (*CreateContext)(Display *dpy, XVisualInfo *visinfo, GLXContext shareList, Bool direct);
66    GLXPixmap (*CreateGLXPixmap)(Display *dpy, XVisualInfo *visinfo, Pixmap pixmap);
67    void (*DestroyContext)(Display *dpy, GLXContext ctx);
68    void (*DestroyGLXPixmap)(Display *dpy, GLXPixmap pixmap);
69    int (*GetConfig)(Display *dpy, XVisualInfo *visinfo, int attrib, int *value);
70    GLXContext (*GetCurrentContext)(void);
71    /*GLXDrawable (*GetCurrentDrawable)(void);*/
72    Bool (*IsDirect)(Display *dpy, GLXContext ctx);
73    Bool (*MakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
74    Bool (*QueryExtension)(Display *dpy, int *errorb, int *event);
75    Bool (*QueryVersion)(Display *dpy, int *maj, int *min);
76    void (*SwapBuffers)(Display *dpy, GLXDrawable drawable);
77    void (*UseXFont)(Font font, int first, int count, int listBase);
78    void (*WaitGL)(void);
79    void (*WaitX)(void);
80 
81    /*** GLX_VERSION_1_1 ***/
82    const char *(*GetClientString)(Display *dpy, int name);
83    const char *(*QueryExtensionsString)(Display *dpy, int screen);
84    const char *(*QueryServerString)(Display *dpy, int screen, int name);
85 
86    /*** GLX_VERSION_1_2 ***/
87    /*Display *(*GetCurrentDisplay)(void);*/
88 
89    /*** GLX_VERSION_1_3 ***/
90    GLXFBConfig *(*ChooseFBConfig)(Display *dpy, int screen, const int *attribList, int *nitems);
91    GLXContext (*CreateNewContext)(Display *dpy, GLXFBConfig config, int renderType, GLXContext shareList, Bool direct);
92    GLXPbuffer (*CreatePbuffer)(Display *dpy, GLXFBConfig config, const int *attribList);
93    GLXPixmap (*CreatePixmap)(Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attribList);
94    GLXWindow (*CreateWindow)(Display *dpy, GLXFBConfig config, Window win, const int *attribList);
95    void (*DestroyPbuffer)(Display *dpy, GLXPbuffer pbuf);
96    void (*DestroyPixmap)(Display *dpy, GLXPixmap pixmap);
97    void (*DestroyWindow)(Display *dpy, GLXWindow window);
98    /*GLXDrawable (*GetCurrentReadDrawable)(void);*/
99    int (*GetFBConfigAttrib)(Display *dpy, GLXFBConfig config, int attribute, int *value);
100    GLXFBConfig *(*GetFBConfigs)(Display *dpy, int screen, int *nelements);
101    void (*GetSelectedEvent)(Display *dpy, GLXDrawable drawable, unsigned long *mask);
102    XVisualInfo *(*GetVisualFromFBConfig)(Display *dpy, GLXFBConfig config);
103    Bool (*MakeContextCurrent)(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
104    int (*QueryContext)(Display *dpy, GLXContext ctx, int attribute, int *value);
105    void (*QueryDrawable)(Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
106    void (*SelectEvent)(Display *dpy, GLXDrawable drawable, unsigned long mask);
107 
108    /*** GLX_SGI_swap_control ***/
109    int (*SwapIntervalSGI)(int);
110 
111    /*** GLX_SGI_video_sync ***/
112    int (*GetVideoSyncSGI)(unsigned int *count);
113    int (*WaitVideoSyncSGI)(int divisor, int remainder, unsigned int *count);
114 
115    /*** GLX_SGI_make_current_read ***/
116    Bool (*MakeCurrentReadSGI)(Display *, GLXDrawable, GLXDrawable, GLXContext);
117    /*GLXDrawable (*GetCurrentReadDrawableSGI)(void);*/
118 
119    /*** GLX_SGIX_video_source (needs video library) ***/
120 #if defined(_VL_H_)
121    GLXVideoSourceSGIX (*CreateGLXVideoSourceSGIX)(Display *, int, VLServer, VLPath, int, VLNode);
122    void (*DestroyGLXVideoSourceSGIX)(Display *, GLXVideoSourceSGIX);
123 #else
124    void *CreateGLXVideoSourceSGIX;
125    void *DestroyGLXVideoSourceSGIX;
126 #endif
127 
128    /*** GLX_EXT_import_context ***/
129    void (*FreeContextEXT)(Display *dpy, GLXContext context);
130    GLXContextID (*GetContextIDEXT)(const GLXContext context);
131    /*Display *(*GetCurrentDisplayEXT)(void);*/
132    GLXContext (*ImportContextEXT)(Display *dpy, GLXContextID contextID);
133    int (*QueryContextInfoEXT)(Display *dpy, GLXContext context, int attribute,int *value);
134 
135    /*** GLX_SGIX_fbconfig ***/
136    int (*GetFBConfigAttribSGIX)(Display *, GLXFBConfigSGIX, int, int *);
137    GLXFBConfigSGIX * (*ChooseFBConfigSGIX)(Display *, int, int *, int *);
138    GLXPixmap (*CreateGLXPixmapWithConfigSGIX)(Display *, GLXFBConfigSGIX, Pixmap);
139    GLXContext (*CreateContextWithConfigSGIX)(Display *, GLXFBConfigSGIX, int, GLXContext, Bool);
140    XVisualInfo * (*GetVisualFromFBConfigSGIX)(Display *, GLXFBConfigSGIX);
141    GLXFBConfigSGIX (*GetFBConfigFromVisualSGIX)(Display *, XVisualInfo *);
142 
143    /*** GLX_SGIX_pbuffer ***/
144    GLXPbufferSGIX (*CreateGLXPbufferSGIX)(Display *, GLXFBConfigSGIX, unsigned int, unsigned int, int *);
145    void (*DestroyGLXPbufferSGIX)(Display *, GLXPbufferSGIX);
146    void (*QueryGLXPbufferSGIX)(Display *, GLXPbufferSGIX, int, unsigned int *);
147    void (*SelectEventSGIX)(Display *, GLXDrawable, unsigned long);
148    void (*GetSelectedEventSGIX)(Display *, GLXDrawable, unsigned long *);
149 
150    /*** GLX_SGI_cushion ***/
151    void (*CushionSGI)(Display *, Window, float);
152 
153    /*** GLX_SGIX_video_resize ***/
154    int (*BindChannelToWindowSGIX)(Display *, int, int, Window);
155    int (*ChannelRectSGIX)(Display *, int, int, int, int, int, int);
156    int (*QueryChannelRectSGIX)(Display *, int, int, int *, int *, int *, int *);
157    int (*QueryChannelDeltasSGIX)(Display *, int, int, int *, int *, int *, int *);
158    int (*ChannelRectSyncSGIX)(Display *, int, int, GLenum);
159 
160    /*** GLX_SGIX_dmbuffer (needs dmedia library) ***/
161 #if defined (_DM_BUFFER_H_)
162    Bool (*AssociateDMPbufferSGIX)(Display *, GLXPbufferSGIX, DMparams *, DMbuffer);
163 #else
164    void *AssociciateDMPbufferSGIX;
165 #endif
166 
167    /*** GLX_SUN_get_transparent_index ***/
168    Status (*GetTransparentIndexSUN)(Display *, Window, Window, unsigned long *);
169 
170    /*** GLX_MESA_copy_sub_buffer ***/
171    void (*CopySubBufferMESA)(Display *dpy, GLXDrawable drawable, int x, int y, int width, int height);
172 
173    /*** GLX_MESA_release_buffers ***/
174    Bool (*ReleaseBuffersMESA)(Display *dpy, Window w);
175 
176    /*** GLX_MESA_pixmap_colormap ***/
177    GLXPixmap (*CreateGLXPixmapMESA)(Display *dpy, XVisualInfo *visinfo, Pixmap pixmap, Colormap cmap);
178 
179    /*** GLX_EXT_texture_from_pixmap ***/
180    void (*BindTexImageEXT)(Display *dpy, GLXDrawable drawable, int buffer,
181                            const int *attrib_list);
182    void (*ReleaseTexImageEXT)(Display *dpy, GLXDrawable drawable, int buffer);
183 
184    /*** GLX_ARB_create_context ***/
185    GLXContext (*CreateContextAttribs)(Display *dpy, GLXFBConfig config,
186                                       GLXContext share_context, Bool direct,
187                                       const int *attrib_list);
188 };
189 
190 
191 
192 extern const char *
193 _glxapi_get_version(void);
194 
195 
196 extern const char **
197 _glxapi_get_extensions(void);
198 
199 
200 extern GLuint
201 _glxapi_get_dispatch_table_size(void);
202 
203 
204 extern void
205 _glxapi_set_no_op_table(struct _glxapi_table *t);
206 
207 
208 extern __GLXextFuncPtr
209 _glxapi_get_proc_address(const char *funcName);
210 
211 
212 #endif
213