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WebGL points / rebuild buffers only when extent changed

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This commit is contained in:
Olivier Guyot
2019-05-14 15:18:42 +02:00
parent 523097903a
commit 75eb62363a
2 changed files with 20 additions and 1 deletions
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7
src/ol/renderer/webgl/PointsLayer.js
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@@ -9,6 +9,7 @@ import WebGLLayerRenderer, {getBlankTexture, pushFeatureInBuffer} from './Layer'
import GeoJSON from '../../format/GeoJSON';
import {getUid} from '../../util';
import ViewHint from '../../ViewHint';
import {createEmpty, equals} from '../../extent';
const VERTEX_SHADER = `
precision mediump float;
@@ -240,6 +241,8 @@ class WebGLPointsLayerRenderer extends WebGLLayerRenderer {
* @private
*/
this.geojsonFeatureCache_ = {};
this.previousExtent_ = createEmpty();
}
/**
@@ -288,8 +291,10 @@ class WebGLPointsLayerRenderer extends WebGLLayerRenderer {
vectorSource.loadFeatures([-Infinity, -Infinity, Infinity, Infinity], resolution, projection);
}
if (!frameState.viewHints[ViewHint.ANIMATING] && !frameState.viewHints[ViewHint.INTERACTING]) {
if (!frameState.viewHints[ViewHint.ANIMATING] && !frameState.viewHints[ViewHint.INTERACTING] &&
!equals(this.previousExtent_, frameState.extent)) {
this.rebuildBuffers_(frameState);
this.previousExtent_ = frameState.extent.slice();
}
// write new data