glxcmds.c

来自「mesa-6.5-minigui源码」· C语言 代码 · 共 2,495 行 · 第 1/5 页

	break;
    case GLX_RENDER_TYPE:
	*value = (int)(ctx->renderType);
	break;
    default:
	return GLX_BAD_ATTRIBUTE;
    }
    return Success;
}

PUBLIC GLX_ALIAS( int, glXQueryContextInfoEXT,
	   (Display *dpy, GLXContext ctx, int attribute, int *value),
	   (dpy, ctx, attribute, value),
	   glXQueryContext )

PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx)
{
    return ctx->xid;
}

PUBLIC GLXContext glXImportContextEXT(Display *dpy, GLXContextID contextID)
{
    GLXContext ctx;

    if (contextID == None) {
	return NULL;
    }
    if (__glXIsDirect(dpy, contextID)) {
	return NULL;
    }

    ctx = CreateContext(dpy, NULL, NULL, NULL, False, contextID, False, 0);
    if (NULL != ctx) {
	if (Success != __glXQueryContextInfo(dpy, ctx)) {
	   return NULL;
	}
    }
    return ctx;
}

PUBLIC void glXFreeContextEXT(Display *dpy, GLXContext ctx)
{
    DestroyContext(dpy, ctx);
}



/*
 * GLX 1.3 functions - these are just stubs for now!
 */

PUBLIC GLXFBConfig *glXChooseFBConfig(Display *dpy, int screen,
				      const int *attribList, int *nitems)
{
    __GLcontextModes ** config_list;
    int   list_size;


    config_list = (__GLcontextModes **) 
	glXGetFBConfigs( dpy, screen, & list_size );

    if ( (config_list != NULL) && (list_size > 0) && (attribList != NULL) ) {
	list_size = choose_visual( config_list, list_size, attribList,
				   GL_TRUE );
	if ( list_size == 0 ) {
	    XFree( config_list );
	    config_list = NULL;
	}
    }

    *nitems = list_size;
    return (GLXFBConfig *) config_list;
}


PUBLIC GLXContext glXCreateNewContext(Display *dpy, GLXFBConfig config,
				      int renderType, GLXContext shareList,
				      Bool allowDirect)
{
    return CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList,
			  allowDirect, None, True, renderType );
}


PUBLIC GLXDrawable glXGetCurrentReadDrawable(void)
{
    GLXContext gc = __glXGetCurrentContext();
    return gc->currentReadable;
}


PUBLIC GLXFBConfig *glXGetFBConfigs(Display *dpy, int screen, int *nelements)
{
    __GLXdisplayPrivate *priv = __glXInitialize(dpy);
    __GLcontextModes ** config = NULL;
    int   i;

    if ( (priv->screenConfigs != NULL)
	 && (screen >= 0) && (screen <= ScreenCount(dpy))
	 && (priv->screenConfigs[screen].configs != NULL)
	 && (priv->screenConfigs[screen].configs->fbconfigID != GLX_DONT_CARE) ) {
	unsigned num_configs = 0;
	__GLcontextModes * modes;


	for ( modes = priv->screenConfigs[screen].configs
	      ; modes != NULL
	      ; modes = modes->next ) {
	    if ( modes->fbconfigID != GLX_DONT_CARE ) {
		num_configs++;
	    }
	}

	config = (__GLcontextModes **) Xmalloc( sizeof(__GLcontextModes *)
						* num_configs );
	if ( config != NULL ) {
	    *nelements = num_configs;
	    i = 0;
	    for ( modes = priv->screenConfigs[screen].configs
		  ; modes != NULL
		  ; modes = modes->next ) {
		config[i] = modes;
		i++;
	    }
	}
    }
    return (GLXFBConfig *) config;
}


PUBLIC int glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
				int attribute, int *value)
{
    __GLcontextModes * const modes = ValidateGLXFBConfig( dpy, config );

    return (modes != NULL)
	? _gl_get_context_mode_data( modes, attribute, value )
	: GLXBadFBConfig;
}


PUBLIC XVisualInfo *glXGetVisualFromFBConfig(Display *dpy, GLXFBConfig config)
{
    XVisualInfo visualTemplate;
    __GLcontextModes * fbconfig = (__GLcontextModes *) config;
    int  count;

    /*
    ** Get a list of all visuals, return if list is empty
    */
    visualTemplate.visualid = fbconfig->visualID;
    return XGetVisualInfo(dpy,VisualIDMask,&visualTemplate,&count);
}


/*
** GLX_SGI_make_current_read
*/

PUBLIC GLX_ALIAS(GLXDrawable, glXGetCurrentReadDrawableSGI, (void), (),
	  glXGetCurrentReadDrawable)


/*
** GLX_SGI_swap_control
*/
PUBLIC int glXSwapIntervalSGI(int interval)
{
   xGLXVendorPrivateReq *req;
   GLXContext gc = __glXGetCurrentContext();
   Display * dpy;
   CARD32 * interval_ptr;
   CARD8 opcode;

   if ( gc == NULL ) {
      return GLX_BAD_CONTEXT;
   }
   
   if ( interval <= 0 ) {
      return GLX_BAD_VALUE;
   }

#ifdef GLX_DIRECT_RENDERING
   if ( gc->isDirect ) {
       __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
							     gc->screen );
       __DRIdrawable * const pdraw = GetDRIDrawable( gc->currentDpy,
						     gc->currentDrawable,
						     NULL );
       if ( __glXExtensionBitIsEnabled( psc, SGI_swap_control_bit )
	    && (pdraw != NULL) ) {
	   pdraw->swap_interval = interval;
	   return 0;
       }
       else {
	   return GLX_BAD_CONTEXT;
       }
   }
#endif
   dpy = gc->currentDpy;
   opcode = __glXSetupForCommand(dpy);
   if (!opcode) {
      return 0;
   }

   /* Send the glXSwapIntervalSGI request */
   LockDisplay(dpy);
   GetReqExtra(GLXVendorPrivate,sizeof(CARD32),req);
   req->reqType = opcode;
   req->glxCode = X_GLXVendorPrivate;
   req->vendorCode = X_GLXvop_SwapIntervalSGI;
   req->contextTag = gc->currentContextTag;

   interval_ptr = (CARD32 *) req + 1;
   *interval_ptr = interval;

   UnlockDisplay(dpy);
   SyncHandle();
   XFlush(dpy);

   return 0;
}


/*
** GLX_MESA_swap_control
*/
PUBLIC int glXSwapIntervalMESA(unsigned int interval)
{
#ifdef GLX_DIRECT_RENDERING
   GLXContext gc = __glXGetCurrentContext();

   if ( interval < 0 ) {
      return GLX_BAD_VALUE;
   }

   if ( (gc != NULL) && gc->isDirect ) {
      __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
							    gc->screen );
      
      if ( (psc != NULL) && (psc->driScreen.private != NULL)
	   && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
	 __DRIdrawable * const pdraw = 
	     (*psc->driScreen.getDrawable)(gc->currentDpy,
					   gc->currentDrawable,
					   psc->driScreen.private);
	 if ( pdraw != NULL ) {
	    pdraw->swap_interval = interval;
	    return 0;
	 }
      }
   }
#else
   (void) interval;
#endif

   return GLX_BAD_CONTEXT;
}
 

PUBLIC int glXGetSwapIntervalMESA(void)
{
#ifdef GLX_DIRECT_RENDERING
   GLXContext gc = __glXGetCurrentContext();

   if ( (gc != NULL) && gc->isDirect ) {
      __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
							    gc->screen );
      
      if ( (psc != NULL) && (psc->driScreen.private != NULL)
	   && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
	 __DRIdrawable * const pdraw = 
	     (*psc->driScreen.getDrawable)(gc->currentDpy,
					   gc->currentDrawable,
					   psc->driScreen.private);
	 if ( pdraw != NULL ) {
	    return pdraw->swap_interval;
	 }
      }
   }
#endif

   return 0;
}


/*
** GLX_MESA_swap_frame_usage
*/

PUBLIC GLint glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
{
   int   status = GLX_BAD_CONTEXT;
#ifdef GLX_DIRECT_RENDERING
   int screen;
   __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
   __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);

   if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
	&& __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
      status = pdraw->frameTracking( dpy, pdraw->private, GL_TRUE );
   }
#else
   (void) dpy;
   (void) drawable;
#endif
   return status;
}

    
PUBLIC GLint glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
{
   int   status = GLX_BAD_CONTEXT;
#ifdef GLX_DIRECT_RENDERING
   int screen;
   __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
   __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);

   if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
	&& __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
      status = pdraw->frameTracking( dpy, pdraw->private, GL_FALSE );
   }
#else
   (void) dpy;
   (void) drawable;
#endif
   return status;
}


PUBLIC GLint glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable,
				  GLfloat *usage)
{
   int   status = GLX_BAD_CONTEXT;
#ifdef GLX_DIRECT_RENDERING
   int screen;
   __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
   __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);

   if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
	&& __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
      int64_t sbc, missedFrames;
      float   lastMissedUsage;

      status = pdraw->queryFrameTracking( dpy, pdraw->private, &sbc,
					  &missedFrames, &lastMissedUsage,
					  usage );
   }
#else
   (void) dpy;
   (void) drawable;
   (void) usage;
#endif
   return status;
}


PUBLIC GLint glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable,
				       int64_t *sbc, int64_t *missedFrames,
				       GLfloat *lastMissedUsage)
{
   int   status = GLX_BAD_CONTEXT;
#ifdef GLX_DIRECT_RENDERING
   int screen;
   __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
   __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);

   if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
	&& __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
      float   usage;

      status = pdraw->queryFrameTracking( dpy, pdraw->private, sbc,
					  missedFrames, lastMissedUsage,
					  & usage );
   }
#else
   (void) dpy;
   (void) drawable;
   (void) sbc;
   (void) missedFrames;
   (void) lastMissedUsage;
#endif
   return status;
}


/*
** GLX_SGI_video_sync
*/
PUBLIC int glXGetVideoSyncSGI(unsigned int *count)
{
   /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
    * FIXME: there should be a GLX encoding for this call.  I can find no
    * FIXME: documentation for the GLX encoding.
    */
#ifdef GLX_DIRECT_RENDERING
   GLXContext gc = __glXGetCurrentContext();


   if ( (gc != NULL) && gc->isDirect ) {
      __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
							    gc->screen );
      if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
	   && psc->driScreen.private && psc->driScreen.getMSC) {
	 int       ret;
	 int64_t   temp;

	 ret = psc->driScreen.getMSC( psc->driScreen.private, & temp );
	 *count = (unsigned) temp;
	 return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
      }
   }
#else
    (void) count;
#endif
   return GLX_BAD_CONTEXT;
}

PUBLIC int glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
{
#ifdef GLX_DIRECT_RENDERING
   GLXContext gc = __glXGetCurrentContext();

   if ( divisor <= 0 || remainder < 0 )
     return GLX_BAD_VALUE;

   if ( (gc != NULL) && gc->isDirect ) {
      __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
							    gc->screen );
      if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
	   && psc->driScreen.private ) {
	 __DRIdrawable * const pdraw = 
	     (*psc->driScreen.getDrawable)(gc->currentDpy,
					   gc->currentDrawable,
					   psc->driScreen.private);
	 if ( (pdraw != NULL) && (pdraw->waitForMSC != NULL) ) {
	    int       ret;
	    int64_t   msc;
	    int64_t   sbc;

	    ret = (*pdraw->waitForMSC)( gc->currentDpy, pdraw->private,
					0, divisor, remainder,
					& msc, & sbc );
	    *count = (unsigned) msc;
	    return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
	 }
      }
   }
#else
   (void) count;
#endif
   return GLX_BAD_CONTEXT;
}


/*
** GLX_SGIS_video_source
*/
#if defined(_VL_H)

PUBLIC GLXVideoSourceSGIX glXCreateGLXVideoSourceSGIX(Display *dpy,
                                     int screen, VLServer server, VLPath path,
                                     int nodeClass, VLNode drainNode)
{
   (void) dpy;
   (void) screen;
   (void) server;
   (void) path;
   (void) nodeClass;
   (void) drainNode;
   return 0;
}

PUBLIC void glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
{
   (void) dpy;
   (void) src;
}

#endif


/*
** GLX_SGIX_fbconfig
** Many of these functions are aliased to GLX 1.3 entry points in the 
** GLX_functions table.
*/

PUBLIC GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
	  (Display *dpy, GLXFBConfigSGIX config, int attribute, int *value),
	  (dpy, config, attribute, value),
	  glXGetFBConfigAttrib)

PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
	  (Display *dpy, int screen, int *attrib_list, int *nelements),
	  (dpy, screen, attrib_list, nelements),
	  glXChooseFBConfig)

PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,