Properly fix useCaching for point cloud colormaps

Forgot the update function in 1092948518, oops

include/openspace/rendering/colormappingcomponent.h

@@ -71,7 +71,7 @@ public:
      */
     void initializeTexture();
 
-    void update(const dataloader::Dataset& dataset);
+    void update(const dataloader::Dataset& dataset, bool useCaching = true);
 
     static documentation::Documentation Documentation();
 

modules/base/rendering/pointcloud/renderablepointcloud.cpp

@@ -1384,7 +1384,7 @@ void RenderablePointCloud::update(const UpdateData&) {
     preUpdate();
 
     if (_hasColorMapFile) {
-        _colorSettings.colorMapping->update(_dataset);
+        _colorSettings.colorMapping->update(_dataset, _useCaching);
     }
 
     if (_spriteTextureIsDirty) {

src/rendering/colormappingcomponent.cpp

@@ -396,9 +396,9 @@ void ColorMappingComponent::initializeTexture() {
     _texture->uploadTexture();
 }
 
-void ColorMappingComponent::update(const dataloader::Dataset& dataset) {
+void ColorMappingComponent::update(const dataloader::Dataset& dataset, bool useCaching) {
     if (_colorMapFileIsDirty) {
-        initialize(dataset);
+        initialize(dataset, useCaching);
         _colorMapTextureIsDirty = true;
         _colorMapFileIsDirty = false;
     }