glxclient.h

mesa-6.5-minigui源码

#ifdef GLX_DIRECT_RENDERING
    /**
     * Per context direct rendering interface functions and data.
     */
    __DRIcontext driContext;
#endif
    
    /**
     * \c GLXFBConfigID used to create this context.  May be \c None.  This
     * field has been replaced by the \c mode field.
     *
     * \since Internal API version 20030317.
     *
     * \deprecated
     * This filed has been largely been replaced by the \c mode field, but
     * the work is not quite done.
     */
    GLXFBConfigID  fbconfigID;

    /**
     * The current read-drawable for this context.  Will be None if this
     * context is not current to any drawable.
     *
     * \since Internal API version 20030606.
     */
    GLXDrawable currentReadable;

   /** 
    * Pointer to client-state data that is private to libGL.  This is only
    * used for indirect rendering contexts.
    *
    * No internal API version change was made for this change.  Client-side
    * drivers should NEVER use this data or even care that it exists.
    */
   void * client_state_private;

   /**
    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
    */
   int renderType;
    
   /**
    * \name Raw server GL version
    *
    * True core GL version supported by the server.  This is the raw value
    * returned by the server, and it may not reflect what is actually
    * supported (or reported) by the client-side library.
    */
    /*@{*/
   int server_major;        /**< Major version number. */
   int server_minor;        /**< Minor version number. */
    /*@}*/

    char gl_extension_bits[ __GL_EXT_BYTES ];
};

#define __glXSetError(gc,code) \
    if (!(gc)->error) {	       \
	(gc)->error = code;    \
    }

extern void __glFreeAttributeState(__GLXcontext *);

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

/**
 * The size of the largest drawing command known to the implementation
 * that will use the GLXRender GLX command.  In this case it is
 * \c glPolygonStipple.
 */
#define __GLX_MAX_SMALL_RENDER_CMD_SIZE	156

/**
 * To keep the implementation fast, the code uses a "limit" pointer
 * to determine when the drawing command buffer is too full to hold
 * another fixed size command.  This constant defines the amount of
 * space that must always be available in the drawing command buffer
 * at all times for the implementation to work.  It is important that
 * the number be just large enough, but not so large as to reduce the
 * efficacy of the buffer.  The "+32" is just to keep the code working
 * in case somebody counts wrong.
 */
#define __GLX_BUFFER_LIMIT_SIZE	(__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)

/**
 * This implementation uses a smaller threshold for switching
 * to the RenderLarge protocol than the protcol requires so that
 * large copies don't occur.
 */
#define __GLX_RENDER_CMD_SIZE_LIMIT	4096

/**
 * One of these records exists per screen of the display.  It contains
 * a pointer to the config data for that screen (if the screen supports GL).
 */
typedef struct __GLXscreenConfigsRec {
    /**
     * GLX extension string reported by the X-server.
     */
    const char *serverGLXexts;

    /**
     * GLX extension string to be reported to applications.  This is the
     * set of extensions that the application can actually use.
     */
    char *effectiveGLXexts;

#ifdef GLX_DIRECT_RENDERING
    /**
     * Per screen direct rendering interface functions and data.
     */
    __DRIscreen driScreen;
#endif

    /**
     * Linked list of configurations for this screen.
     */
    __GLcontextModes *configs;

    /**
     * Per-screen dynamic GLX extension tracking.  The \c direct_support
     * field only contains enough bits for 64 extensions.  Should libGL
     * ever need to track more than 64 GLX extensions, we can safely grow
     * this field.  The \c __GLXscreenConfigs structure is not used outside
     * libGL.
     */
    /*@{*/
    unsigned char direct_support[8];
    GLboolean ext_list_first_time;
    /*@}*/

} __GLXscreenConfigs;

/**
 * Per display private data.  One of these records exists for each display
 * that is using the OpenGL (GLX) extension.
 */
struct __GLXdisplayPrivateRec {
    /**
     * Back pointer to the display
     */
    Display *dpy;

    /**
     * The \c majorOpcode is common to all connections to the same server.
     * It is also copied into the context structure.
     */
    int majorOpcode;

    /**
     * \name Server Version
     *
     * Major and minor version returned by the server during initialization.
     */
    /*@{*/
    int majorVersion, minorVersion;
    /*@}*/

    /**
     * \name Storage for the servers GLX vendor and versions strings.
     * 
     * These are the same for all screens on this display. These fields will
     * be filled in on demand.
     */
    /*@{*/
    const char *serverGLXvendor;
    const char *serverGLXversion;
    /*@}*/

    /**
     * Configurations of visuals for all screens on this display.
     * Also, per screen data which now includes the server \c GLX_EXTENSION
     * string.
     */
    __GLXscreenConfigs *screenConfigs;

#ifdef GLX_DIRECT_RENDERING
    /**
     * Per display direct rendering interface functions and data.
     */
    __DRIdisplay driDisplay;
#endif
};

void __glXFreeContext(__GLXcontext*);

extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);

extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber, 
				GLint totalRequests,
				const GLvoid * data, GLint dataLen);

extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
				  const GLvoid *, GLint);

/* Initialize the GLX extension for dpy */
extern __GLXdisplayPrivate *__glXInitialize(Display*);

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

extern int __glXDebug;

/* This is per-thread storage in an MT environment */
#if defined( USE_XTHREADS ) || defined( PTHREADS )

extern void __glXSetCurrentContext(__GLXcontext *c);

# if defined( GLX_USE_TLS )

extern __thread void * __glX_tls_Context
    __attribute__((tls_model("initial-exec")));

#  define __glXGetCurrentContext()	__glX_tls_Context

# else

extern __GLXcontext *__glXGetCurrentContext(void);

# endif /* defined( GLX_USE_TLS ) */

#else

extern __GLXcontext *__glXcurrentContext;
#define __glXGetCurrentContext()	__glXcurrentContext
#define __glXSetCurrentContext(gc)	__glXcurrentContext = gc

#endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */


/*
** Global lock for all threads in this address space using the GLX
** extension
*/
#if defined( USE_XTHREADS )
extern xmutex_rec __glXmutex;
#define __glXLock()    xmutex_lock(&__glXmutex)
#define __glXUnlock()  xmutex_unlock(&__glXmutex)
#elif defined( PTHREADS )
extern pthread_mutex_t __glXmutex;
#define __glXLock()    pthread_mutex_lock(&__glXmutex)
#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
#else
#define __glXLock()
#define __glXUnlock()
#endif

/*
** Setup for a command.  Initialize the extension for dpy if necessary.
*/
extern CARD8 __glXSetupForCommand(Display *dpy);

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

/*
** Data conversion and packing support.
*/

extern const GLuint __glXDefaultPixelStore[9];

/* Send an image to the server using RenderLarge. */
extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim,
    GLint width, GLint height, GLint depth, GLenum format, GLenum type,
    const GLvoid *src, GLubyte *pc, GLubyte *modes);

/* Return the size, in bytes, of some pixel data */
extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);

/* Return the number of elements per group of a specified format*/
extern GLint __glElementsPerGroup(GLenum format, GLenum type);

/* Return the number of bytes per element, based on the element type (other
** than GL_BITMAP).
*/
extern GLint __glBytesPerElement(GLenum type);

/*
** Fill the transport buffer with the data from the users buffer,
** applying some of the pixel store modes (unpack modes) to the data
** first.  As a side effect of this call, the "modes" field is
** updated to contain the modes needed by the server to decode the
** sent data.
*/
extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
			  GLenum, const GLvoid*, GLubyte*, GLubyte*);

/* Copy map data with a stride into a packed buffer */
extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
			  const GLfloat *, GLfloat *);
extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
			  const GLdouble *, GLdouble *);

/*
** Empty an image out of the reply buffer into the clients memory applying
** the pack modes to pack back into the clients requested format.
*/
extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
		           GLenum, const GLubyte *, GLvoid *);


/*
** Allocate and Initialize Vertex Array client state 
*/
extern void __glXInitVertexArrayState(__GLXcontext*);

/*
** Inform the Server of the major and minor numbers and of the client
** libraries extension string.
*/
extern void __glXClientInfo (  Display *dpy, int opcode );

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

/*
** Declarations that should be in Xlib
*/
#ifdef __GL_USE_OUR_PROTOTYPES
extern void _XFlush(Display*);
extern Status _XReply(Display*, xReply*, int, Bool);
extern void _XRead(Display*, void*, long);
extern void _XSend(Display*, const void*, long);
#endif


extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config,
    int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags );

extern char * __glXGetStringFromServer( Display * dpy, int opcode,
    CARD32 glxCode, CARD32 for_whom, CARD32 name );

extern char *__glXstrdup(const char *str);


extern const char __glXGLClientVersion[];
extern const char __glXGLClientExtensions[];

/* Determine the internal API version */
extern int __glXGetInternalVersion(void);

/* Get the unadjusted system time */
extern int __glXGetUST( int64_t * ust );

#endif /* !__GLX_client_h__ */