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When rendering interim tiles, reuse existing replay groups

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This commit is contained in:
ahocevar
2018-11-13 13:11:23 +01:00
parent cda23e0d53
commit 30909ddbcd
4 changed files with 50 additions and 2 deletions
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11
src/ol/renderer/canvas/VectorTileLayer.js
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@@ -156,7 +156,8 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
const source = /** @type {import("../../source/VectorTile.js").default} */ (layer.getSource());
const sourceTileGrid = source.getTileGrid();
const tileGrid = source.getTileGridForProjection(projection);
const resolution = tileGrid.getResolution(tile.tileCoord[0]);
const zoom = tile.tileCoord[0];
const resolution = tileGrid.getResolution(zoom);
const tileExtent = tile.extent;
for (let t = 0, tt = tile.tileKeys.length; t < tt; ++t) {
@@ -164,6 +165,14 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
if (sourceTile.getState() != TileState.LOADED) {
continue;
}
if (tile.useLoadedOnly) {
const lowResReplayGroup = sourceTile.getLowResReplayGroup(layer, zoom, tileExtent);
if (lowResReplayGroup) {
// reuse existing replay if we're rendering an interim tile
sourceTile.setReplayGroup(layer, tile.tileCoord.toString(), lowResReplayGroup);
continue;
}
}
const sourceTileCoord = sourceTile.tileCoord;
const sourceTileExtent = sourceTileGrid.getTileCoordExtent(sourceTileCoord);