glxclient.h

mesa-6.5-minigui源码

/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
** 
** http://oss.sgi.com/projects/FreeB
** 
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
** 
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
** 
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
*/
/* $XFree86: xc/lib/GL/glx/glxclient.h,v 1.21 2004/02/09 23:46:31 alanh Exp $ */

/**
 * \file glxclient.h
 * Direct rendering support added by Precision Insight, Inc.
 *
 * \author Kevin E. Martin <[e-mail]>
 */

#ifndef _GLX_client_h_
#define _GLX_client_h_
#define NEED_REPLIES
#define NEED_EVENTS
#include <X11/Xproto.h>
#include <X11/Xlibint.h>
#define GLX_GLXEXT_PROTOTYPES
#include <GL/glx.h>
#include <GL/glxext.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef WIN32
#include <stdint.h>
#endif
#include "GL/glxint.h"
#include "GL/glxproto.h"
#include "GL/internal/glcore.h"
#include "glapitable.h"
#include "glxextensions.h"
#if defined( USE_XTHREADS )
# include <X11/Xthreads.h>
#elif defined( PTHREADS )
# include <pthread.h>
#endif

#define GLX_MAJOR_VERSION	1	/* current version numbers */
#define GLX_MINOR_VERSION	4

#define __GLX_MAX_TEXTURE_UNITS 32

typedef struct __GLXcontextRec __GLXcontext;
typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
typedef struct _glapi_table __GLapi;

/************************************************************************/

#ifdef GLX_DIRECT_RENDERING

#include <GL/internal/dri_interface.h>


/**
 * Display dependent methods.  This structure is initialized during the
 * \c driCreateDisplay call.
 */
struct __DRIdisplayRec {
    /**
     * Method to destroy the private DRI display data.
     */
    void (*destroyDisplay)(Display *dpy, void *displayPrivate);

    /**
     * Opaque pointer to private per display direct rendering data.
     * \c NULL if direct rendering is not supported on this display.
     */
    struct __DRIdisplayPrivateRec *private;

    /**
     * Array of pointers to methods to create and initialize the private DRI
     * screen data.
     */
    PFNCREATENEWSCREENFUNC * createNewScreen;
};


/*
** We keep a linked list of these structures, one per DRI device driver.
*/
struct __DRIdriverRec {
   const char *name;
   void *handle;
   PFNCREATENEWSCREENFUNC createNewScreenFunc;
   struct __DRIdriverRec *next;
};

/*
** Function to create and DRI display data and initialize the display
** dependent methods.
*/
extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp);

extern  __DRIdriver *driGetDriver(Display *dpy, int scrNum);

extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );

/*
** Functions to obtain driver configuration information from a direct
** rendering client application
*/
extern const char *glXGetScreenDriver (Display *dpy, int scrNum);

extern const char *glXGetDriverConfig (const char *driverName);

extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw);

#endif

/************************************************************************/

#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16

typedef struct __GLXpixelStoreModeRec {
    GLboolean swapEndian;
    GLboolean lsbFirst;
    GLuint rowLength;
    GLuint imageHeight;
    GLuint imageDepth;
    GLuint skipRows;
    GLuint skipPixels;
    GLuint skipImages;
    GLuint alignment;
} __GLXpixelStoreMode;


typedef struct __GLXattributeRec {
    GLuint mask;

    /**
     * Pixel storage state.  Most of the pixel store mode state is kept
     * here and used by the client code to manage the packing and
     * unpacking of data sent to/received from the server.
     */
    __GLXpixelStoreMode storePack, storeUnpack;

    /**
     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
     * disabled?
     */
    GLboolean NoDrawArraysProtocol;
    
    /**
     * Vertex Array storage state.  The vertex array component
     * state is stored here and is used to manage the packing of
     * DrawArrays data sent to the server.
     */
    struct array_state_vector * array_state;
} __GLXattribute;

typedef struct __GLXattributeMachineRec {
	__GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
	__GLXattribute **stackPointer;
} __GLXattributeMachine;

/**
 * GLX state that needs to be kept on the client.  One of these records
 * exist for each context that has been made current by this client.
 */
struct __GLXcontextRec {
    /**
     * \name Drawing command buffer.
     *
     * Drawing commands are packed into this buffer before being sent as a
     * single GLX protocol request.  The buffer is sent when it overflows or
     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
     * in the buffer to be filled.  \c limit is described above in the buffer
     * slop discussion.
     *
     * Commands that require large amounts of data to be transfered will
     * also use this buffer to hold a header that describes the large
     * command.
     *
     * These must be the first 6 fields since they are static initialized
     * in the dummy context in glxext.c
     */
    /*@{*/
    GLubyte *buf;
    GLubyte *pc;
    GLubyte *limit;
    GLubyte *bufEnd;
    GLint bufSize;
    /*@}*/

    /**
     * The XID of this rendering context.  When the context is created a
     * new XID is allocated.  This is set to None when the context is
     * destroyed but is still current to some thread. In this case the
     * context will be freed on next MakeCurrent.
     */
    XID xid;

    /**
     * The XID of the \c shareList context.
     */
    XID share_xid;

    /**
     * Visual id.
     * 
     * \deprecated
     * This filed has been largely been replaced by the \c mode field, but
     * the work is not quite done.
     */
    VisualID vid;

    /**
     * Screen number.
     */
    GLint screen;

    /**
     * \c GL_TRUE if the context was created with ImportContext, which
     * means the server-side context was created by another X client.
     */
    GLboolean imported;

    /**
     * The context tag returned by MakeCurrent when this context is made
     * current. This tag is used to identify the context that a thread has
     * current so that proper server context management can be done.  It is
     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
     * context)).
     */
    GLXContextTag currentContextTag;

    /**
     * \name Rendering mode
     *
     * The rendering mode is kept on the client as well as the server.
     * When \c glRenderMode is called, the buffer associated with the
     * previous rendering mode (feedback or select) is filled.
     */
    /*@{*/
    GLenum renderMode;
    GLfloat *feedbackBuf;
    GLuint *selectBuf;
    /*@}*/

    /**
     * This is \c GL_TRUE if the pixel unpack modes are such that an image
     * can be unpacked from the clients memory by just copying.  It may
     * still be true that the server will have to do some work.  This
     * just promises that a straight copy will fetch the correct bytes.
     */
    GLboolean fastImageUnpack;

    /**
     * Fill newImage with the unpacked form of \c oldImage getting it
     * ready for transport to the server.
     */
    void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
		      GLenum, const GLvoid*, GLubyte*, GLubyte*);

    /**
     * Client side attribs.
     */
    __GLXattributeMachine attributes;

    /**
     * Client side error code.  This is set when client side gl API
     * routines need to set an error because of a bad enumerant or
     * running out of memory, etc.
     */
    GLenum error;

    /**
     * Whether this context does direct rendering.
     */
    Bool isDirect;

    /**
     * \c dpy of current display for this context.  Will be \c NULL if not
     * current to any display, or if this is the "dummy context".
     */
    Display *currentDpy;

    /**
     * The current drawable for this context.  Will be None if this
     * context is not current to any drawable.  currentReadable is below.
     */
    GLXDrawable currentDrawable;

    /**
     * \name GL Constant Strings
     *
     * Constant strings that describe the server implementation
     * These pertain to GL attributes, not to be confused with
     * GLX versioning attributes.
     */
    /*@{*/
    GLubyte *vendor;
    GLubyte *renderer;
    GLubyte *version;
    GLubyte *extensions;
    /*@}*/

    /**
     * Record the dpy this context was created on for later freeing
     */
    Display *createDpy;

    /**
     * Maximum small render command size.  This is the smaller of 64k and
     * the size of the above buffer.
     */
    GLint maxSmallRenderCommandSize;

    /**
     * Major opcode for the extension.  Copied here so a lookup isn't
     * needed.
     */
    GLint majorOpcode;