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Speed up rendering by not using alpha

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This commit is contained in:
Andreas Hocevar
2019-10-30 14:36:23 +01:00
parent 7097a4c6ba
commit 4b13c6dae0
2 changed files with 13 additions and 13 deletions
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src/ol/renderer/canvas/VectorTileLayer.js
+5 -5
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@@ -430,10 +430,9 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
}
const extent = tileGrid.getTileCoordExtent(tile.wrappedTileCoord);
const corner = getTopLeft(extent);
const renderScale = tileGrid.getResolution(tileCoord[0]) / resolution;
const tilePixel = [
(coordinate[0] - corner[0]) / resolution / renderScale,
(corner[1] - coordinate[1]) / resolution / renderScale
(coordinate[0] - corner[0]) / resolution,
(corner[1] - coordinate[1]) / resolution
];
const features = tile.getSourceTiles().reduce(function(accumulator, sourceTile) {
return accumulator.concat(sourceTile.getFeatures());
@@ -444,12 +443,13 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
const rotation = this.renderedRotation_;
const transforms = [
this.getRenderTransform(tileGrid.getTileCoordCenter(tile.wrappedTileCoord),
resolution * renderScale, 0, 0.5, size[0], size[1], 0)
resolution, 0, 0.5, size[0], size[1], 0)
];
requestAnimationFrame(function() {
tile.hitDetectionImageData = createHitDetectionImageData(tileSize, transforms,
features, layer.getStyleFunction(),
tileGrid.getTileCoordExtent(tile.wrappedTileCoord), resolution, rotation);
tileGrid.getTileCoordExtent(tile.wrappedTileCoord),
tile.getReplayState(layer).renderedResolution, rotation);
resolve(hitDetect(tilePixel, features, tile.hitDetectionImageData));
});
} else {