fix tile's stencil value (#1951)

fuzhenn · web-flow · commit 70a43de42230 · 2023-04-28T18:15:37.000+08:00
diff --git a/src/renderer/layer/tilelayer/TileLayerGLRenderer.js b/src/renderer/layer/tilelayer/TileLayerGLRenderer.js
@@ -96,7 +96,7 @@ class TileLayerGLRenderer extends ImageGLRenderable(TileLayerCanvasRenderer) {
             debugInfo =  this.getDebugInfo(tileInfo.id);
         }
         const gl = this.gl;
-        gl.stencilFunc(gl.LESS, this.drawingCurrentTiles ? 0 : 1 + Math.abs(this.getCurrentTileZoom() - tileInfo.z), 0xFF);
+        gl.stencilFunc(gl.LEQUAL, Math.abs(this.getCurrentTileZoom() - tileInfo.z), 0xFF);
         const layerPolygonOffset = this.layer.getPolygonOffset();
         const polygonOffset = this.drawingCurrentTiles ? layerPolygonOffset - 1 : layerPolygonOffset;
         gl.polygonOffset(polygonOffset, polygonOffset);

Original file line number	Diff line number	Diff line change
`@@ -96,7 +96,7 @@ class TileLayerGLRenderer extends ImageGLRenderable(TileLayerCanvasRenderer) {`
`96`	`96`	`debugInfo = this.getDebugInfo(tileInfo.id);`
`97`	`97`	`}`
`98`	`98`	`const gl = this.gl;`
`99`		`- gl.stencilFunc(gl.LESS, this.drawingCurrentTiles ? 0 : 1 + Math.abs(this.getCurrentTileZoom() - tileInfo.z), 0xFF);`
	`99`	`+ gl.stencilFunc(gl.LEQUAL, Math.abs(this.getCurrentTileZoom() - tileInfo.z), 0xFF);`
`100`	`100`	`const layerPolygonOffset = this.layer.getPolygonOffset();`
`101`	`101`	`const polygonOffset = this.drawingCurrentTiles ? layerPolygonOffset - 1 : layerPolygonOffset;`
`102`	`102`	`gl.polygonOffset(polygonOffset, polygonOffset);`