fakeglx.c

mesa-6.5-minigui源码

   (void) screen;

   switch (name) {
      case GLX_EXTENSIONS:
         return get_extensions();
      case GLX_VENDOR:
	 return VENDOR;
      case GLX_VERSION:
	 return version;
      default:
         return NULL;
   }
}



/* GLX 1.1 and later */
static const char *
Fake_glXGetClientString( Display *dpy, int name )
{
   static char version[1000];
   _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
                 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);

   (void) dpy;

   switch (name) {
      case GLX_EXTENSIONS:
         return get_extensions();
      case GLX_VENDOR:
	 return VENDOR;
      case GLX_VERSION:
	 return version;
      default:
         return NULL;
   }
}



/*
 * GLX 1.3 and later
 */


static int
Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
                           int attribute, int *value )
{
   XMesaVisual v = (XMesaVisual) config;
   (void) dpy;
   (void) config;

   if (!dpy || !config || !value)
      return -1;

   return get_config(v, attribute, value, GL_TRUE);
}


static GLXFBConfig *
Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
{
   XVisualInfo *visuals, visTemplate;
   const long visMask = VisualScreenMask;
   int i;

   /* Get list of all X visuals */
   visTemplate.screen = screen;
   visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
   if (*nelements > 0) {
      XMesaVisual *results;
      results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
      if (!results) {
         *nelements = 0;
         return NULL;
      }
      for (i = 0; i < *nelements; i++) {
         results[i] = create_glx_visual(dpy, visuals + i);
      }
      return (GLXFBConfig *) results;
   }
   return NULL;
}


static GLXFBConfig *
Fake_glXChooseFBConfig( Display *dpy, int screen,
                        const int *attribList, int *nitems )
{
   XMesaVisual xmvis;

   if (!attribList || !attribList[0]) {
      /* return list of all configs (per GLX_SGIX_fbconfig spec) */
      return Fake_glXGetFBConfigs(dpy, screen, nitems);
   }

   xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
   if (xmvis) {
      GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
      if (!config) {
         *nitems = 0;
         return NULL;
      }
      *nitems = 1;
      config[0] = (GLXFBConfig) xmvis;
      return (GLXFBConfig *) config;
   }
   else {
      *nitems = 0;
      return NULL;
   }
}


static XVisualInfo *
Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
{
   if (dpy && config) {
      XMesaVisual xmvis = (XMesaVisual) config;
#if 0      
      return xmvis->vishandle;
#else
      /* create a new vishandle - the cached one may be stale */
      xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
      if (xmvis->vishandle) {
         _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
      }
      return xmvis->vishandle;
#endif
   }
   else {
      return NULL;
   }
}


static GLXWindow
Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
                      const int *attribList )
{
   XMesaVisual xmvis = (XMesaVisual) config;
   XMesaBuffer xmbuf;
   if (!xmvis)
      return 0;

   xmbuf = XMesaCreateWindowBuffer2(xmvis, win, NULL);
   if (!xmbuf)
      return 0;

   (void) dpy;
   (void) attribList;  /* Ignored in GLX 1.3 */

   return win;  /* A hack for now */
}


static void
Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
{
   XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
   if (b)
      XMesaDestroyBuffer(b);
   /* don't destroy X window */
}


/* XXX untested */
static GLXPixmap
Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
                      const int *attribList )
{
   XMesaVisual v = (XMesaVisual) config;
   XMesaBuffer b;

   (void) dpy;
   (void) config;
   (void) pixmap;
   (void) attribList;  /* Ignored in GLX 1.3 */

   if (!dpy || !config || !pixmap)
      return 0;

   b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
   if (!b) {
      return 0;
   }

   return pixmap;
}


static void
Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
{
   XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
   if (b)
      XMesaDestroyBuffer(b);
   /* don't destroy X pixmap */
}


static GLXPbuffer
Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
                       const int *attribList )
{
   XMesaVisual xmvis = (XMesaVisual) config;
   XMesaBuffer xmbuf;
   const int *attrib;
   int width = 0, height = 0;
   GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;

   (void) dpy;

   for (attrib = attribList; *attrib; attrib++) {
      switch (*attrib) {
         case GLX_PBUFFER_WIDTH:
            attrib++;
            width = *attrib;
            break;
         case GLX_PBUFFER_HEIGHT:
            attrib++;
            height = *attrib;
            break;
         case GLX_PRESERVED_CONTENTS:
            attrib++;
            preserveContents = *attrib; /* ignored */
            break;
         case GLX_LARGEST_PBUFFER:
            attrib++;
            useLargest = *attrib; /* ignored */
            break;
         default:
            return 0;
      }
   }

   /* not used at this time */
   (void) useLargest;
   (void) preserveContents;

   if (width == 0 || height == 0)
      return 0;

   xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
   /* A GLXPbuffer handle must be an X Drawable because that's what
    * glXMakeCurrent takes.
    */
   if (xmbuf)
      return (GLXPbuffer) xmbuf->frontxrb->pixmap;
   else
      return 0;
}


static void
Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
{
   XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
   if (b) {
      XMesaDestroyBuffer(b);
   }
}


static void
Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
                       unsigned int *value )
{
   XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
   if (!xmbuf)
      return;

   switch (attribute) {
      case GLX_WIDTH:
         *value = xmbuf->mesa_buffer.Width;
         break;
      case GLX_HEIGHT:
         *value = xmbuf->mesa_buffer.Height;
         break;
      case GLX_PRESERVED_CONTENTS:
         *value = True;
         break;
      case GLX_LARGEST_PBUFFER:
         *value = xmbuf->mesa_buffer.Width * xmbuf->mesa_buffer.Height;
         break;
      case GLX_FBCONFIG_ID:
         *value = xmbuf->xm_visual->visinfo->visualid;
         return;
      default:
         return;  /* GLX_BAD_ATTRIBUTE? */
   }
}


static GLXContext
Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
                          int renderType, GLXContext shareList, Bool direct )
{
   struct fake_glx_context *glxCtx;
   struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
   XMesaVisual xmvis = (XMesaVisual) config;

   if (!dpy || !config ||
       (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
      return 0;

   glxCtx = CALLOC_STRUCT(fake_glx_context);
   if (!glxCtx)
      return 0;

   /* deallocate unused windows/buffers */
   XMesaGarbageCollect();

   glxCtx->xmesaContext = XMesaCreateContext(xmvis,
                                   shareCtx ? shareCtx->xmesaContext : NULL);
   if (!glxCtx->xmesaContext) {
      FREE(glxCtx);
      return NULL;
   }

   glxCtx->xmesaContext->direct = GL_FALSE;
   glxCtx->glxContext.isDirect = GL_FALSE;
   glxCtx->glxContext.currentDpy = dpy;
   glxCtx->glxContext.xid = (XID) glxCtx;  /* self pointer */

   assert((void *) glxCtx == (void *) &(glxCtx->glxContext));

   return (GLXContext) glxCtx;
}


static int
Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
{
   struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
   XMesaContext xmctx = glxCtx->xmesaContext;

   (void) dpy;
   (void) ctx;

   switch (attribute) {
   case GLX_FBCONFIG_ID:
      *value = xmctx->xm_visual->visinfo->visualid;
      break;
   case GLX_RENDER_TYPE:
      if (xmctx->xm_visual->mesa_visual.rgbMode)
         *value = GLX_RGBA_BIT;
      else
         *value = GLX_COLOR_INDEX_BIT;
      break;
   case GLX_SCREEN:
      *value = 0;
      return Success;
   default:
      return GLX_BAD_ATTRIBUTE;
   }
   return 0;
}


static void
Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
{
   XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
   if (xmbuf)
      xmbuf->selectedEvents = mask;
}


static void
Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
                          unsigned long *mask )
{
   XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
   if (xmbuf)
      *mask = xmbuf->selectedEvents;
   else
      *mask = 0;
}



/*** GLX_SGI_swap_control ***/

static int
Fake_glXSwapIntervalSGI(int interval)
{
   (void) interval;
   return 0;
}



/*** GLX_SGI_video_sync ***/

static int
Fake_glXGetVideoSyncSGI(unsigned int *count)
{
   (void) count;
   return 0;
}

static int
Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
{
   (void) divisor;
   (void) remainder;
   (void) count;
   return 0;
}



/*** GLX_SGI_make_current_read ***/

static Bool
Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
{
   return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
}

/* not used
static GLXDrawable
Fake_glXGetCurrentReadDrawableSGI(void)
{
   return 0;
}
*/


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

static GLXVideoSourceSGIX
Fake_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;
}

static void
Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
{
   (void) dpy;
   (void) src;
}

#endif


/*** GLX_EXT_import_context ***/

static void
Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
{
   (void) dpy;
   (void) context;
}

static GLXContextID
Fake_glXGetContext