static void *swrast_fbdev_create_drawable(struct native_fbdev_screen *hfbdev_screen,
int fd, bool want_fence,
unsigned xoffset, unsigned yoffset,
unsigned width, unsigned height)
{
struct swrast_fbdev_screen *fbdev_screen = swrast_fbdev_screen(hfbdev_screen);
struct fbdev_sw_drawable *drawable = CALLOC_STRUCT(fbdev_sw_drawable);
struct fb_var_screeninfo vinfo;
struct fb_fix_screeninfo finfo;
if (fd != fbdev_screen->fd)
return NULL;
if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo))
return NULL;
if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo))
return NULL;
/* sanitize the values */
if (xoffset + width > vinfo.xres_virtual) {
if (xoffset > vinfo.xres_virtual)
width = 0;
else
width = vinfo.xres_virtual - xoffset;
}
if (yoffset + height > vinfo.yres_virtual) {
if (yoffset > vinfo.yres_virtual)
height = 0;
else
height = vinfo.yres_virtual - yoffset;
}
drawable->format = vinfo_to_format(&vinfo);
drawable->x = xoffset;
drawable->y = yoffset;
drawable->width = width;
drawable->height = height;
if(drawable->format == PIPE_FORMAT_NONE ||
!drawable->width || !drawable->height)
{
FREE(drawable);
return NULL;
}
return drawable;
}
static boolean
fbdev_display_init_config(struct native_display *ndpy)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct native_config *nconf = &fbdpy->config;
if (ioctl(fbdpy->fd, FBIOGET_VSCREENINFO, &fbdpy->config_vinfo))
return FALSE;
nconf->color_format = vinfo_to_format(&fbdpy->config_vinfo);
if (nconf->color_format == PIPE_FORMAT_NONE)
return FALSE;
nconf->buffer_mask = (1 << NATIVE_ATTACHMENT_BACK_LEFT);
nconf->window_bit = TRUE;
return TRUE;
}
static boolean
fbdev_surface_update_drawable(struct native_surface *nsurf,
const struct fb_var_screeninfo *vinfo)
{
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
unsigned x, y, width, height;
x = vinfo->xoffset;
y = vinfo->yoffset;
width = MIN2(vinfo->xres, fbsurf->width);
height = MIN2(vinfo->yres, fbsurf->height);
/* sanitize the values */
if (x + width > vinfo->xres_virtual) {
if (x > vinfo->xres_virtual)
width = 0;
else
width = vinfo->xres_virtual - x;
}
if (y + height > vinfo->yres_virtual) {
if (y > vinfo->yres_virtual)
height = 0;
else
height = vinfo->yres_virtual - y;
}
fbsurf->drawable.format = vinfo_to_format(vinfo);
fbsurf->drawable.x = vinfo->xoffset;
fbsurf->drawable.y = vinfo->yoffset;
fbsurf->drawable.width = vinfo->xres;
fbsurf->drawable.height = vinfo->yres;
return (fbsurf->drawable.format != PIPE_FORMAT_NONE &&
fbsurf->drawable.width &&
fbsurf->drawable.height);
}
