/*
* Must be called before the D3D device is reset (e.g., when
* resizing a window). All non-synced display bitmaps must be
* synced to memory.
*/
void _al_d3d_prepare_bitmaps_for_reset(ALLEGRO_DISPLAY_D3D *disp)
{
unsigned int i;
if (disp->device_lost)
return;
if (!_al_d3d_render_to_texture_supported())
return;
al_lock_mutex(_al_d3d_lost_device_mutex);
for (i = 0; i < created_bitmaps._size; i++) {
ALLEGRO_BITMAP_D3D **bptr = (ALLEGRO_BITMAP_D3D **)_al_vector_ref(&created_bitmaps, i);
ALLEGRO_BITMAP_D3D *bmp = *bptr;
ALLEGRO_BITMAP *al_bmp = (ALLEGRO_BITMAP *)bmp;
if (bmp->display == disp) {
//d3d_sync_bitmap_memory(al_bmp);
if (!al_bmp->preserve_texture) {
bmp->modified = false;
}
else if (!bmp->is_backbuffer && bmp->modified && !(al_bmp->flags & ALLEGRO_MEMORY_BITMAP)) {
_al_d3d_sync_bitmap(al_bmp);
bmp->modified = false;
}
}
}
al_unlock_mutex(_al_d3d_lost_device_mutex);
}
static ALLEGRO_LOCKED_REGION *d3d_lock_region(ALLEGRO_BITMAP *bitmap,
int x, int y, int w, int h, int format,
int flags)
{
ALLEGRO_BITMAP_D3D *d3d_bmp = (ALLEGRO_BITMAP_D3D *)bitmap;
if (d3d_bmp->display->device_lost)
return NULL;
RECT rect;
DWORD Flags = flags & ALLEGRO_LOCK_READONLY ? D3DLOCK_READONLY : 0;
int f = _al_get_real_pixel_format(al_get_current_display(), format);
if (f < 0) {
return NULL;
}
rect.left = x;
rect.right = x + w;
rect.top = y;
rect.bottom = y + h;
if (d3d_bmp->is_backbuffer) {
ALLEGRO_DISPLAY_D3D *d3d_disp = (ALLEGRO_DISPLAY_D3D *)bitmap->display;
if (d3d_disp->render_target->LockRect(&d3d_bmp->locked_rect, &rect, Flags) != D3D_OK) {
ALLEGRO_ERROR("LockRect failed in d3d_lock_region.\n");
return NULL;
}
}
else {
LPDIRECT3DTEXTURE9 texture;
if (_al_d3d_render_to_texture_supported()) {
/*
* Sync bitmap->memory with texture
*/
bitmap->locked = false;
_al_d3d_sync_bitmap(bitmap);
bitmap->locked = true;
texture = d3d_bmp->system_texture;
}
else {
texture = d3d_bmp->video_texture;
}
if (texture->LockRect(0, &d3d_bmp->locked_rect, &rect, Flags) != D3D_OK) {
ALLEGRO_ERROR("LockRect failed in d3d_lock_region.\n");
return NULL;
}
}
if (format == ALLEGRO_PIXEL_FORMAT_ANY || bitmap->format == format || f == bitmap->format) {
bitmap->locked_region.data = d3d_bmp->locked_rect.pBits;
bitmap->locked_region.format = bitmap->format;
bitmap->locked_region.pitch = d3d_bmp->locked_rect.Pitch;
bitmap->locked_region.pixel_size = al_get_pixel_size(bitmap->format);
}
else {
bitmap->locked_region.pitch = al_get_pixel_size(f) * w;
bitmap->locked_region.data = al_malloc(bitmap->locked_region.pitch*h);
bitmap->locked_region.format = f;
bitmap->locked_region.pixel_size = al_get_pixel_size(bitmap->format);
if (!(bitmap->lock_flags & ALLEGRO_LOCK_WRITEONLY)) {
_al_convert_bitmap_data(
d3d_bmp->locked_rect.pBits, bitmap->format, d3d_bmp->locked_rect.Pitch,
bitmap->locked_region.data, f, bitmap->locked_region.pitch,
0, 0, 0, 0, w, h);
}
}
return &bitmap->locked_region;
}
