Unnormal slowness in Heroes 4 (X11DRV_BitBlt?)

[Marinescu-Ghetau Iulian]

See http://bugs.winehq.org/show_bug.cgi?id=3902

Hey guys, a bit of help here! I did the following changes:

-added member to X_PHYSBITMAP:

XRectangle modified_rect;

-added 2 functions:

/***********************************************************************
*           X11DRV_SetBoundRect
*/
void X11DRV_SetBoundRect(X_PHYSBITMAP *physBitmap, INT x, INT y, INT width, 
INT
height)
{
    XRectangle *t;
    INT xMin,yMin,xMax,yMax;

if (!physBitmap) return;

t = &(physBitmap->modified_rect);

if ( t->width && t->height && /*already a valid rect inside*/
             width && height ) /*not trying to invalidate rect*/
    {
    	//calculate the union of the two rectangles
    	xMin = ((t->x < x)?t->x:x);
    	yMin = ((t->y < y)?t->y:y);
    	xMax = ((t->x + t->width > x + width)?(t->x + t->width):(x +
width));
    	yMax = ((t->y + t->height > y + height)?(t->y + t->height):(y +
height));

t->x = xMin;
    	t->y = yMin;
    	t->width = xMax - xMin;
    	t->height = yMax - yMin;

}
    else
    {
    	t->x = x;
    	t->y = y;
    	t->width = width;
    	t->height = height;
    }

TRACE("(%p,%d,%d,%d,%d)\n", physBitmap->hbitmap, t->x, t->y, t->width,
t->height);

}

/***********************************************************************
*           X11DRV_GetBoundRect
*/
UINT X11DRV_GetBoundRect(X_PHYSBITMAP *physBitmap, INT *x, INT *y, INT 
*width,
INT *height)
{

DIBSECTION dib;
    XRectangle *t;

if (!physBitmap || GetObjectW( physBitmap->hbitmap, sizeof(dib),
&dib ) != sizeof(dib))
    {
    	ERR("called for non-DIBSection!?\n");
    	return 1;
    }

t = &(physBitmap->modified_rect);

/* we should check for oversize values */
    if ( (t->width > 0) && (t->height > 0) &&
         (t->x < dib.dsBm.bmWidth) && (t->y < dib.dsBm.bmHeight) )
    {
    	*x = t->x;
    	*y = t->y;

if (t->x + t->width > dib.dsBm.bmWidth)
    		*width = dib.dsBm.bmWidth - t->x;
    	else
    		*width = t->width;

if (t->y + t->height > dib.dsBm.bmHeight)
    		*height = dib.dsBm.bmHeight - t->y;
    	else
    		*height = t->height;
    }
    else
    {
    	*x = 0;
    	*y = 0;
    	*width = dib.dsBm.bmWidth;
    	*height = dib.dsBm.bmHeight;
    }

TRACE("(%p,%d,%d,%d,%d)\n", physBitmap->hbitmap, *x, *y, *width,
*height);

return 0;
}

-changed X11DRV_DIB_DoUpdateDIBSection like this:

static void X11DRV_DIB_DoUpdateDIBSection(X_PHYSBITMAP *physBitmap, BOOL 
toDIB)
{
    INT x,y,width,height;

if ( X11DRV_GetBoundRect(physBitmap,&x,&y,&width,&height) ) return;

/*invalidate bound rect*/
    X11DRV_SetBoundRect(physBitmap,0,0,0,0);

X11DRV_DIB_DoCopyDIBSection(physBitmap, toDIB,
                                physBitmap->colorMap, physBitmap->nColorMap,
                                physBitmap->pixmap, x, y, x, y,
                                width, height);

}

- and finally, a GDI function calls it like this (for example bitblt):

X11DRV_SetBoundRect(physDevDst->bitmap,xDst,yDst,width,height);
    X11DRV_CoerceDIBSection( physDevDst, DIB_Status_GdiMod, FALSE );
    if (physDevDst != physDevSrc)
    {
      X11DRV_SetBoundRect(physDevSrc->bitmap,xSrc,ySrc,width,height);
      X11DRV_CoerceDIBSection( physDevSrc, DIB_Status_GdiMod, FALSE );
    }
    result = BITBLT_InternalStretchBlt( physDevDst, xDst, yDst, width, 
height,
                                        physDevSrc, xSrc, ySrc, width, 
height,
rop );

END:
    if (physDevDst != physDevSrc)
      X11DRV_UnlockDIBSection( physDevSrc, FALSE );
    X11DRV_UnlockDIBSection( physDevDst, TRUE );

What am i doing wrong, i mean is my logic correct ?