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Fix rendering at large zooms

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This commit is contained in:
Tom Payne
2012-08-06 09:39:41 +02:00
parent 9d891c1339
commit 4675ae2285
1 changed files with 4 additions and 5 deletions
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9
src/ol/webgl/tilelayerrenderer.js
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@@ -1,7 +1,6 @@
// FIXME large resolutions lead to too large framebuffers :-(
// FIXME animated shaders! check in redraw
// FIXME defer texture uploads and delete* calls
// FIXME strange things happen at very large zooms
goog.provide('ol.webgl.TileLayerRenderer');
goog.provide('ol.webgl.tilelayerrenderer.shader.Fragment');
@@ -263,8 +262,9 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
var tileStore = tileLayer.getStore();
var tileGrid = tileStore.getTileGrid();
var z = tileGrid.getZForResolution(mapResolution);
var tileResolution = tileGrid.getResolution(z);
var tileBounds = tileGrid.getTileBoundsForExtentAndResolution(
mapRotatedExtent, mapResolution);
mapRotatedExtent, tileResolution);
var tileBoundsSize = tileBounds.getSize();
var tileSize = tileGrid.getTileSize();
@@ -274,10 +274,9 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
var framebufferDimension =
Math.pow(2, Math.ceil(Math.log(maxDimension) / Math.log(2)));
var framebufferExtentSize = new ol.Size(
mapResolution * framebufferDimension,
mapResolution * framebufferDimension);
tileResolution * framebufferDimension,
tileResolution * framebufferDimension);
var origin = tileGrid.getOrigin(z);
var tileResolution = tileGrid.getResolution(z);
var minX = origin.x + tileBounds.minX * tileSize.width * tileResolution;
var minY = origin.y + tileBounds.minY * tileSize.height * tileResolution;
var framebufferExtent = new ol.Extent(