xref: /xsrc/external/mit/xorg-server/dist/glx/glxcontext.h

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#ifndef _GLX_context_h_
#define _GLX_context_h_

/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */

typedef struct __GLXtextureFromPixmap __GLXtextureFromPixmap;
struct __GLXtextureFromPixmap {
    int (*bindTexImage)		(__GLXcontext  *baseContext,
				 int            buffer,
				 __GLXdrawable *pixmap);
    int (*releaseTexImage)	(__GLXcontext  *baseContext,
				 int            buffer,
				 __GLXdrawable *pixmap);
};


struct __GLXcontext {
    void           (*destroy)       (__GLXcontext *context);
    int            (*makeCurrent)   (__GLXcontext *context);
    int            (*loseCurrent)   (__GLXcontext *context);
    int            (*copy)          (__GLXcontext *dst,
				     __GLXcontext *src,
				     unsigned long mask);
    int            (*forceCurrent)  (__GLXcontext *context);

    __GLXtextureFromPixmap *textureFromPixmap;

    /*
    ** list of context structs
    */
    __GLXcontext *last;
    __GLXcontext *next;

    /*
    ** config struct for this context
    */
    __GLXconfig *config;

    /*
    ** Pointer to screen info data for this context.  This is set
    ** when the context is created.
    */
    __GLXscreen *pGlxScreen;

    /*
    ** The XID of this context.
    */
    XID id;

    /*
    ** The XID of the shareList context.
    */
    XID share_id;

    /*
    ** Whether this context's ID still exists.
    */
    GLboolean idExists;

    /*
    ** Whether this context is current for some client.
    */
    GLboolean isCurrent;

    /*
    ** Whether this context is a direct rendering context.
    */
    GLboolean isDirect;

    /*
    ** This flag keeps track of whether there are unflushed GL commands.
    */
    GLboolean hasUnflushedCommands;

    /*
    ** Current rendering mode for this context.
    */
    GLenum renderMode;

    /*
    ** Buffers for feedback and selection.
    */
    GLfloat *feedbackBuf;
    GLint feedbackBufSize;	/* number of elements allocated */
    GLuint *selectBuf;
    GLint selectBufSize;	/* number of elements allocated */

    /*
    ** The drawable private this context is bound to
    */
    __GLXdrawable *drawPriv;
    __GLXdrawable *readPriv;
};

void __glXContextDestroy(__GLXcontext *context);

#endif /* !__GLX_context_h__ */