"Reached the max number of texture atlases, can not allocate more" using Google Maps

Question

I'm building an app which uses Google Maps, and a lot of overlays, is seems like when I try to load a lot overlays it stall and provide me with "((null)) was false: Reached the max number of texture atlases, can not allocate more."

I'm just adding images as overlays this way:

...
if (image != nil) {
                let image: CGImage = (image?.cgImage)!
                let icon = UIImage(cgImage: image)

                let overlay = GMSGroundOverlay(bounds: overlayBounds, icon: icon)
                overlay.bearing = 0
                overlay.map = map
                overlay.zIndex = 10

                self.overlays.append(overlay);

Any suggestions on how to fix this issue?

I have the same problem. There's a few suggestions in other answers: clustering (https://stackoverflow.com/questions/29390359/custom-marker-performance-ios-crash-with-result-null-was-false-reached-th), reusing the Images (https://stackoverflow.com/questions/25555778/optimising-custom-marker-image-performance-with-google-maps-sdk-for-ios). Apparently for different images there's not much to be done other than restrict them, for eg: with the zoom level (https://stackoverflow.com/questions/43910085/googlemaps-sdk-for-ios-swift-3-when-hiding-a-marker-and-then-adding-the-map-v) — Efren, Jul 13 '17 at 01:05
Yea, I ended up reducing the amount of images by restricting zoom level — Recusiwe, Jul 21 '17 at 14:20

lax1089 · Answer 1 · 2023-03-10T19:33:53.947

5

The problem appears to be that you are allocating a separate UIImage instance to each marker/overlay. This means that when you are plotting markers on the GMSMapView instance, each marker has a separate UIImage.

If you are creating several markers with the same image, use the same instance of UIImage for each of the markers. This helps improve the performance of your application when displaying many markers.

Simply put, you need to limit the overlays you append. Are your images dynamic or static? If it is the same image a simple solution is to define the image once and just add a reference to the same image when you append the overlay. If the images are dynamic, you could merge the images in code and just use one single overlay in Maps.

edited Mar 10 '23 at 19:33

answered Apr 18 '17 at 03:04

lax1089

3,403
3
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Maybe this is because of the `UIColor()` constructor, OP should use `guard let image = image`, then the image would be reused. Now it is constructed anew from the `CGImage` every time. – Alistra Apr 18 '17 at 06:29
1

The images I use are dynamic – Recusiwe Apr 18 '17 at 11:48
Have you got the solution? I am too having a requirement to show many dynamic images to show on GMSGroundOverlay. – Aanchal Chaurasia May 21 '18 at 11:51

score 4 · Answer 2 · edited Nov 20 '19 at 11:03

Instead of setting marker's iconView, set marker's icon. That too initializes the image outside of the for loop:

func displayMarkers() {
    let iconImage = UIImage(named: "locationgreen")
    for partner in partners {
        let lat : Double = Double(partner.location?.coordinates![1] ?? 0)
        let lng : Double = Double(partner.location?.coordinates![0] ?? 0)

        let position = CLLocationCoordinate2D(latitude: lat, longitude: lng)
        let marker = GMSMarker(position: position)
        marker.title = partner.name
        marker.icon = iconImage
    }
}

score 3 · Answer 3 · answered Apr 18 '17 at 06:30

3

Try

if let image = image {
    let overlay = GMSGroundOverlay(bounds: overlayBounds, icon: icon)
    overlay.bearing = 0
    overlay.map = map
    overlay.zIndex = 10

    self.overlays.append(overlay)
}

answered Apr 18 '17 at 06:30

Alistra

5,177
2
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I was a bit too quick accepting this answer, I still get the same message. – Recusiwe Apr 22 '17 at 18:19
Maybe try merging the images in code and just use one overlay in maps if this use case makes sense. – Alistra Apr 23 '17 at 20:47

"Reached the max number of texture atlases, can not allocate more" using Google Maps

3 Answers3

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