Thanks ... after this modification most test applications are working now as expected.

Only the test app graywin has still a problem. It's the only one which is loosing updates of the window after a hide/un-
hide sequence.

I have tested this behavior on two different machines which are providing different VGA adapters.
The type of the graphics driver makes no difference.

Do you have any idea why these problems are not present with QNX 6.3.2 ?

Best Regards

--Armin



> 1) Regarding the first problem, you have described
> 
> Find the following code in the ./src/video/photon/SDL_ph_video.c
> 
>         if ((flags & SDL_HWSURFACE) == SDL_HWSURFACE)
>         {
>             PtSetArg(&args[nargs++], Pt_ARG_BASIC_FLAGS, Pt_TRUE, Pt_BASIC_PREVENT_FILL);
>         }
>         else
>         {
>             PtSetArg(&args[nargs++], Pt_ARG_FILL_COLOR, Pg_BLACK, 0);
>         }
> 
> And leave the following line only:
> 
>             PtSetArg(&args[nargs++], Pt_ARG_BASIC_FLAGS, Pt_TRUE, Pt_BASIC_PREVENT_FILL);
> 
> Looks like SDL application blits background before Photon clears window 
> content to black (somehow delayed). But in this case you'll get trash in place
>  of window in case if application will not redraw the whole window at start.
> 
> 2) I can't reproduce any other problems under VMWare.

Hello Mike,

regarding to point 2) ... iin the attachment is a small video which shows the problems with graywin.

Best Regards

--Armin

> 2) I can't reproduce any other problems under VMWare.

> Based on what you describe I think you run into a problem of incorrectly setup
>  draw context. Before rendering is done (especially outside of normal libph 
> draw cycle) make sure that rendering translation and clipping are set 
> correctly:
> 	PgClearTranslationCx()
> 	PgClearClippingsCx()
> 	PgSetRegionCx();
> 	<render>

It is done in a similar way. Please see the blitting routine blow:

void ph_OCUpdate(_THIS, int numrects, SDL_Rect *rects)
{
    int i;

    PhPoint_t zero = {0, 0};
    PhArea_t src_rect;
    PhArea_t dest_rect;

    PgSetTranslation(&zero, 0);
    PgSetRegion(PtWidgetRid(window));
    PgSetClipping(0, NULL);

    PgFlush();
    PgWaitHWIdle();

    for (i=0; i<numrects; ++i)
    {
        if (rects[i].w == 0)  /* Clipped? */
        {
            continue;
        }

        if (rects[i].h == 0)  /* Clipped? */
        {
            continue;
        }
        
        src_rect.pos.x=rects[i].x;
        src_rect.pos.y=rects[i].y;
        dest_rect.pos.x=rects[i].x;
        dest_rect.pos.y=rects[i].y;

        src_rect.size.w=rects[i].w;
        src_rect.size.h=rects[i].h;
        dest_rect.size.w=rects[i].w;
        dest_rect.size.h=rects[i].h;
        
        PgContextBlitArea(OCImage.offscreen_context, &src_rect, NULL, &dest_rect);
    }

    if (PgFlush() < 0)
    {
        SDL_SetError("ph_OCUpdate(): PgFlush failed.\n");
    }
}

Best Regards

--Armin