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Allow WebGL tile layers to be constructed without a source

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This commit is contained in:
Tim Schaub
2021-12-19 09:58:40 -07:00
parent 568327e693
commit 34c84cf107
2 changed files with 55 additions and 10 deletions
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31
src/ol/layer/WebGLTile.js
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@@ -2,6 +2,7 @@
* @module ol/layer/WebGLTile
*/
import BaseTileLayer from './BaseTile.js';
import LayerProperty from '../layer/Property.js';
import WebGLTileLayerRenderer, {
Attributes,
Uniforms,
@@ -298,14 +299,28 @@ class WebGLTileLayer extends BaseTileLayer {
* @private
*/
this.styleVariables_ = this.style_.variables || {};
this.addChangeListener(LayerProperty.SOURCE, this.handleSourceUpdate_);
}
/**
* @private
*/
handleSourceUpdate_() {
this.setStyle(this.style_);
}
/**
* @private
* @return {number} The number of source bands.
*/
getSourceBandCount_() {
const source = this.getSource();
return source && 'bandCount' in source ? source.bandCount : 4;
}
createRenderer() {
const source = this.getSource();
const parsedStyle = parseStyle(
this.style_,
'bandCount' in source ? source.bandCount : 4
);
const parsedStyle = parseStyle(this.style_, this.getSourceBandCount_());
return new WebGLTileLayerRenderer(this, {
vertexShader: parsedStyle.vertexShader,
@@ -323,11 +338,7 @@ class WebGLTileLayer extends BaseTileLayer {
*/
setStyle(style) {
this.style_ = style;
const source = this.getSource();
const parsedStyle = parseStyle(
this.style_,
'bandCount' in source ? source.bandCount : 4
);
const parsedStyle = parseStyle(this.style_, this.getSourceBandCount_());
const renderer = this.getRenderer();
renderer.reset({
vertexShader: parsedStyle.vertexShader,