Classification primitives become ready when show is false

CHANGES.md

@@ -8,6 +8,7 @@ Change Log
 * Fixed glTF support to handle meshes with and without tangent vectors, and with/without morph targets, sharing one material. [#6421](https://github.com/AnalyticalGraphicsInc/cesium/pull/6421)
 * Fixed glTF support to handle skinned meshes when no skin is supplied. [#6061](https://github.com/AnalyticalGraphicsInc/cesium/issues/6061)
 * Allow loadWithXhr to work with string URLs in a web worker.
+* `GroundPrimitive`s and `ClassificationPrimitive`s will become ready when `show` is `false`. [#6428](https://github.com/AnalyticalGraphicsInc/cesium/pull/6428) 
 * Fix Firefox WebGL console warnings. [#5912](https://github.com/AnalyticalGraphicsInc/cesium/issues/5912)
 * Fix parsing Cesium.js in older browsers that do not support all TypedArray types. [#6396](https://github.com/AnalyticalGraphicsInc/cesium/pull/6396)
 

Source/Scene/ClassificationPrimitive.js

@@ -834,7 +834,7 @@ define([
      * @exception {DeveloperError} Not all of the geometry instances have the same color attribute.
      */
     ClassificationPrimitive.prototype.update = function(frameState) {
-        if (!this.show || (!defined(this._primitive) && !defined(this.geometryInstances))) {
+        if (!defined(this._primitive) && !defined(this.geometryInstances)) {
             return;
         }
 
@@ -931,6 +931,7 @@ define([
             this._rsColorPass = RenderState.fromCache(getColorRenderState(true));
         }
 
+        this._primitive.show = this.show;
         this._primitive.debugShowBoundingVolume = this.debugShowBoundingVolume;
         this._primitive.update(frameState);
     };

Source/Scene/GroundPrimitive.js

@@ -684,7 +684,7 @@ define([
      * @exception {DeveloperError} Not all of the geometry instances have the same color attribute.
      */
     GroundPrimitive.prototype.update = function(frameState) {
-        if (!this.show || (!defined(this._primitive) && !defined(this.geometryInstances))) {
+        if (!defined(this._primitive) && !defined(this.geometryInstances)) {
             return;
         }
 
@@ -784,6 +784,7 @@ define([
             });
         }
 
+        this._primitive.show = this.show;
         this._primitive.debugShowShadowVolume = this.debugShowShadowVolume;
         this._primitive.debugShowBoundingVolume = this.debugShowBoundingVolume;
         this._primitive.update(frameState);

Specs/Scene/ClassificationPrimitiveSpec.js

@@ -282,6 +282,29 @@ defineSuite([
         expect(frameState.commandList.length).toEqual(0);
     });
 
+    it('becomes ready when show is false', function() {
+        if (!ClassificationPrimitive.isSupported(scene)) {
+            return;
+        }
+
+        primitive = scene.groundPrimitives.add(new ClassificationPrimitive({
+            geometryInstances : boxInstance
+        }));
+        primitive.show = false;
+
+        var ready = false;
+        primitive.readyPromise.then(function() {
+            ready = true;
+        });
+
+        return pollToPromise(function() {
+            scene.render();
+            return ready;
+        }).then(function() {
+            expect(ready).toEqual(true);
+        });
+    });
+
     it('does not render other than for the color or pick pass', function() {
         if (!ClassificationPrimitive.isSupported(scene)) {
             return;

Specs/Scene/GroundPrimitiveSpec.js

@@ -285,6 +285,29 @@ defineSuite([
         expect(frameState.commandList.length).toEqual(0);
     });
 
+    it('becomes ready when show is false', function() {
+        if (!GroundPrimitive.isSupported(scene)) {
+            return;
+        }
+
+        primitive = scene.groundPrimitives.add(new GroundPrimitive({
+            geometryInstances : rectangleInstance
+        }));
+        primitive.show = false;
+
+        var ready = false;
+        primitive.readyPromise.then(function() {
+            ready = true;
+        });
+
+        return pollToPromise(function() {
+            scene.render();
+            return ready;
+        }).then(function() {
+            expect(ready).toEqual(true);
+        });
+    });
+
     it('does not render other than for the color or pick pass', function() {
         if (!GroundPrimitive.isSupported(scene)) {
             return;