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Add depth test to PolygonReplay

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This commit is contained in:
GaborFarkas
2016-11-11 14:58:17 +01:00
parent 310fabe94a
commit ca1414b2d0
2 changed files with 27 additions and 1 deletions
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19
src/ol/render/webgl/polygonreplay/index.js
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@@ -870,6 +870,16 @@ ol.render.webgl.PolygonReplay.prototype.shutDownProgram = function(gl, locations
* @inheritDoc
*/
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.obj.isEmpty(skippedFeaturesHash)) {
this.drawReplaySkipping_(gl, context, skippedFeaturesHash);
} else {
@@ -887,6 +897,13 @@ ol.render.webgl.PolygonReplay.prototype.drawReplay = function(gl, context, skipp
end = start;
}
}
if (!hitDetection) {
gl.disable(gl.DEPTH_TEST);
gl.clear(gl.DEPTH_BUFFER_BIT);
//Restore GL parameters.
gl.depthMask(tmpDepthMask);
gl.depthFunc(tmpDepthFunc);
}
};
@@ -964,6 +981,7 @@ ol.render.webgl.PolygonReplay.prototype.drawReplaySkipping_ = function(gl, conte
if (skippedFeaturesHash[featureUid]) {
if (start !== end) {
this.drawElements(gl, context, start, end);
gl.clear(gl.DEPTH_BUFFER_BIT);
}
end = featureStart;
}
@@ -972,6 +990,7 @@ ol.render.webgl.PolygonReplay.prototype.drawReplaySkipping_ = function(gl, conte
}
if (start !== end) {
this.drawElements(gl, context, start, end);
gl.clear(gl.DEPTH_BUFFER_BIT);
}
start = end = groupStart;
}