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Prevent overdraw in PolygonReplay.

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This commit is contained in:
GaborFarkas
2016-07-13 18:43:35 +02:00
parent 4b2fb38954
commit 18bc820f8b
1 changed files with 18 additions and 1 deletions
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19
src/ol/render/webgl/imagereplay/index.js
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@@ -1908,8 +1908,18 @@ ol.render.webgl.PolygonReplay.prototype.setUpProgram_ = function(gl, context, si
* @param {WebGLRenderingContext} gl gl.
* @param {ol.webgl.Context} context Context.
* @param {Object} skippedFeaturesHash Ids of features to skip.
* @param {boolean} hitDetection Hit detection mode.
*/
ol.render.webgl.PolygonReplay.prototype.drawReplay_ = function(gl, context, skippedFeaturesHash) {
ol.render.webgl.PolygonReplay.prototype.drawReplay_ = function(gl, context, skippedFeaturesHash, hitDetection) {
//Save GL parameters.
var tmpDepthFunc = /** @type {number} */ (gl.getParameter(gl.DEPTH_FUNC));
var tmpDepthMask = /** @type {boolean} */ (gl.getParameter(gl.DEPTH_WRITEMASK));
if (!hitDetection) {
gl.enable(gl.DEPTH_TEST);
gl.depthMask(true);
gl.depthFunc(gl.NOTEQUAL);
}
if (!ol.object.isEmpty(skippedFeaturesHash)) {
this.drawReplaySkipping_(gl, context, skippedFeaturesHash);
@@ -1928,6 +1938,13 @@ ol.render.webgl.PolygonReplay.prototype.drawReplay_ = function(gl, context, skip
end = start;
}
}
if (!hitDetection) {
gl.clear(gl.DEPTH_BUFFER_BIT);
gl.disable(gl.DEPTH_TEST);
//Restore GL parameters.
gl.depthMask(tmpDepthMask);
gl.depthFunc(tmpDepthFunc);
}
};