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Sprite cache: Avoid resizing to fully zoomed if not needed

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This commit is contained in:
Jonathan G Rennison
2023-08-23 02:20:53 +01:00
parent 0cac2526f1
commit 14dc6586bc
1 changed files with 11 additions and 2 deletions
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13
src/spritecache.cpp
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@@ -542,8 +542,12 @@ static bool PadSprites(SpriteLoader::Sprite *sprite, unsigned int sprite_avail,
static bool ResizeSprites(SpriteLoader::Sprite *sprite, unsigned int sprite_avail, SpriteEncoder *encoder, uint8 zoom_levels)
{
ZoomLevel first_avail = static_cast<ZoomLevel>(FindFirstBit(sprite_avail));
ZoomLevel first_needed = static_cast<ZoomLevel>(FindFirstBit(zoom_levels));
ZoomLevel start = std::min(first_avail, first_needed);
bool needed = false;
for (ZoomLevel zoom = ZOOM_LVL_SPR_END; zoom-- > ZOOM_LVL_NORMAL; ) {
for (ZoomLevel zoom = ZOOM_LVL_SPR_END; zoom-- > start; ) {
if (HasBit(sprite_avail, zoom) && sprite[zoom].data != nullptr) {
needed = false;
} else if (HasBit(zoom_levels, zoom)) {
@@ -554,12 +558,17 @@ static bool ResizeSprites(SpriteLoader::Sprite *sprite, unsigned int sprite_avai
}
/* Create a fully zoomed image if it does not exist */
ZoomLevel first_avail = static_cast<ZoomLevel>(FindFirstBit(sprite_avail));
if (first_avail != ZOOM_LVL_NORMAL) {
if (!ResizeSpriteIn(sprite, first_avail, ZOOM_LVL_NORMAL, !HasBit(zoom_levels, ZOOM_LVL_NORMAL))) return false;
SetBit(sprite_avail, ZOOM_LVL_NORMAL);
}
/* Create a zoomed image of the first required zoom if there any no sources which are equally or more zoomed in */
if (zoom_levels != 0 && start > ZOOM_LVL_NORMAL && start < first_avail && HasBit(zoom_levels, start)) {
if (!ResizeSpriteIn(sprite, first_avail, start, false)) return false;
SetBit(sprite_avail, start);
}
/* Pad sprites to make sizes match. */
if (!PadSprites(sprite, sprite_avail, encoder)) return false;