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Improve algorithm for finding framebuffer size

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Tom Payne
2012-08-06 00:00:38 +02:00
parent 71c659396d
commit bf6705a80d
1 changed files with 2 additions and 5 deletions
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src/ol/webgl/tilelayerrenderer.js
+2 -5
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@@ -269,11 +269,8 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
var maxDimension = Math.max( var maxDimension = Math.max(
tileBoundsSize.width * tileSize.width, tileBoundsSize.width * tileSize.width,
tileBoundsSize.height * tileSize.height); tileBoundsSize.height * tileSize.height);
// FIXME find a better algorithms for rounding up to the next power of two var framebufferDimension =
var framebufferDimension = Math.max(tileSize.width, tileSize.height); Math.pow(2, Math.ceil(Math.log(maxDimension) / Math.log(2)));
while (framebufferDimension < maxDimension) {
framebufferDimension *= 2;
}
var nTilesX = framebufferDimension / tileSize.width; var nTilesX = framebufferDimension / tileSize.width;
var nTilesY = framebufferDimension / tileSize.height; var nTilesY = framebufferDimension / tileSize.height;
var framebufferTileBounds = new ol.TileBounds( var framebufferTileBounds = new ol.TileBounds(