xorg-server-1.4/GL/glx/glxcontext.h

   1 #ifdef HAVE_DIX_CONFIG_H
   2 #include <dix-config.h>
   3 #endif
   4
   5 #ifndef _GLX_context_h_
   6 #define _GLX_context_h_
   7
   8 /*
   9 ** License Applicability. Except to the extent portions of this file are
  10 ** made subject to an alternative license as permitted in the SGI Free
  11 ** Software License B, Version 1.1 (the "License"), the contents of this
  12 ** file are subject only to the provisions of the License. You may not use
  13 ** this file except in compliance with the License. You may obtain a copy
  14 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
  15 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
  16 **
  17 ** http://oss.sgi.com/projects/FreeB
  18 **
  19 ** Note that, as provided in the License, the Software is distributed on an
  20 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  21 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  22 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  23 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  24 **
  25 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  26 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  27 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  28 ** Copyright in any portions created by third parties is as indicated
  29 ** elsewhere herein. All Rights Reserved.
  30 **
  31 ** Additional Notice Provisions: The application programming interfaces
  32 ** established by SGI in conjunction with the Original Code are The
  33 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  34 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  35 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  36 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  37 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  38 ** published by SGI, but has not been independently verified as being
  39 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  40 **
  41 */
  42
  43 #include "GL/internal/glcore.h"
  44
  45 typedef struct __GLXtextureFromPixmap __GLXtextureFromPixmap;
  46 struct __GLXtextureFromPixmap {
  47     int (*bindTexImage)         (__GLXcontext *baseContext,
  48                                  int           buffer,
  49                                  __GLXpixmap  *pixmap);
  50     int (*releaseTexImage)      (__GLXcontext *baseContext,
  51                                  int           buffer,
  52                                  __GLXpixmap  *pixmap);
  53 };
  54
  55
  56 struct __GLXcontext {
  57     void           (*destroy)       (__GLXcontext *context);
  58     int            (*makeCurrent)   (__GLXcontext *context);
  59     int            (*loseCurrent)   (__GLXcontext *context);
  60     int            (*copy)          (__GLXcontext *dst,
  61                                      __GLXcontext *src,
  62                                      unsigned long mask);
  63     int            (*forceCurrent)  (__GLXcontext *context);
  64
  65     __GLXtextureFromPixmap *textureFromPixmap;
  66
  67     /*
  68     ** list of context structs
  69     */
  70     __GLXcontext *last;
  71     __GLXcontext *next;
  72
  73     /*
  74     ** list of contexts bound to the same drawable
  75     */
  76     __GLXcontext *nextDrawPriv;
  77     __GLXcontext *nextReadPriv;
  78
  79     /*
  80     ** mode struct for this context
  81     */
  82     __GLcontextModes *modes;
  83
  84     /*
  85     ** Pointer to screen info data for this context.  This is set
  86     ** when the context is created.
  87     */
  88     ScreenPtr pScreen;
  89     __GLXscreen *pGlxScreen;
  90
  91     /*
  92     ** This context is created with respect to this visual.
  93     */
  94     VisualRec *pVisual;
  95
  96     /*
  97     ** The XID of this context.
  98     */
  99     XID id;
 100
 101     /*
 102     ** The XID of the shareList context.
 103     */
 104     XID share_id;
 105
 106     /*
 107     ** Visual id.
 108     */
 109     VisualID vid;
 110
 111     /*
 112     ** screen number.
 113     */
 114     GLint screen;
 115
 116     /*
 117     ** Whether this context's ID still exists.
 118     */
 119     GLboolean idExists;
 120
 121     /*
 122     ** Whether this context is current for some client.
 123     */
 124     GLboolean isCurrent;
 125
 126     /*
 127     ** Whether this context is a direct rendering context.
 128     */
 129     GLboolean isDirect;
 130
 131     /*
 132     ** Window pending state
 133     */
 134     GLuint pendingState;
 135
 136     /*
 137     ** This flag keeps track of whether there are unflushed GL commands.
 138     */
 139     GLboolean hasUnflushedCommands;
 140
 141     /*
 142     ** Current rendering mode for this context.
 143     */
 144     GLenum renderMode;
 145
 146     /*
 147     ** Buffers for feedback and selection.
 148     */
 149     GLfloat *feedbackBuf;
 150     GLint feedbackBufSize;      /* number of elements allocated */
 151     GLuint *selectBuf;
 152     GLint selectBufSize;        /* number of elements allocated */
 153
 154     /*
 155     ** Set only if current drawable is a glx pixmap.
 156     */
 157     __GLXpixmap *drawPixmap;
 158     __GLXpixmap *readPixmap;
 159
 160     /*
 161     ** The drawable private this context is bound to
 162     */
 163     __GLXdrawable *drawPriv;
 164     __GLXdrawable *readPriv;
 165 };
 166
 167 /* pending state defines */
 168 #define __GLX_PENDING_RESIZE    0x1
 169 #define __GLX_PENDING_DESTROY   0x2
 170 #define __GLX_PENDING_SWAP      0x4
 171
 172 void __glXContextDestroy(__GLXcontext *context);
 173
 174 #endif /* !__GLX_context_h__ */