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Fix intermediate zoom levels in WebGL tile layer renderer

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This commit is contained in:
Tom Payne
2012-07-29 11:05:13 +02:00
parent 12956da634
commit 74b67a2e3a
1 changed files with 6 additions and 5 deletions
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11
src/ol/webgl/tilelayerrenderer.js
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@@ -1,8 +1,6 @@
// FIXME large resolutions lead to too large framebuffers :-(
// FIXME animated shaders! check in redraw
// FIXME out-by-one error in texture alignment?
// FIXME bad things happen when we go outside the zoom levels
// FIXME bad things happen when the resolution does not match the zoom levels
goog.provide('ol.webgl.TileLayerRenderer');
goog.provide('ol.webgl.tilelayerrenderer.shader.Fragment');
@@ -273,7 +271,8 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
var tileStore = tileLayer.getStore();
var tileGrid = tileStore.getTileGrid();
var z = tileGrid.getZForResolution(mapResolution);
var tileBounds = tileGrid.getTileBoundsForExtentAndZ(mapExtent, z);
var tileBounds =
tileGrid.getTileBoundsForExtentAndResolution(mapExtent, mapResolution);
var tileBoundsSize = tileBounds.getSize();
var tileSize = tileGrid.getTileSize();
@@ -375,8 +374,10 @@ ol.webgl.TileLayerRenderer.prototype.render = function() {
(framebufferTileBoundsExtent.maxY - framebufferTileBoundsExtent.minY),
0);
goog.vec.Mat4.scale(this.matrix_,
mapSize.width / framebufferDimension,
mapSize.height / framebufferDimension,
(mapExtent.maxX - mapExtent.minX) /
(framebufferTileBoundsExtent.maxX - framebufferTileBoundsExtent.minX),
(mapExtent.maxY - mapExtent.minY) /
(framebufferTileBoundsExtent.maxY - framebufferTileBoundsExtent.minY),
1);
};