Crash when using CustomRasterSourceTileRenderer

[kbobrowski]

Environment

• Xcode version: 15.4
• iOS version: 17.5.1
• Devices affected: iPhone 13
• Maps SDK Version: 11.6.0-rc.1

Observed behavior and steps to reproduce

App is crashing with:

validateRenderPassDescriptor:991: failed assertion `RenderPass Descriptor Validation
No output textures defined for the render pass. Either set a texture to at least one render pass attachment, or use targetless rasterization by setting the render pass descriptor's renderTarget{Width|Height} properties to nonzero values.
no sampleCount for color and raster available, either set defaultColorSampleCount or set defaultRasterSampleCount or set appropriate attachments

Steps to reproduce:

1. zoom the map in (up to ~100 km across)
2. move around for a while (~ 20 seconds)
3. zoom out (~ planet level)
4. app should crash when zooming out
5. if app did not crash repeat steps 1-3

Minimal example:

import SwiftUI
@_spi(Experimental) import MapboxMaps

class CustomRenderer: CustomRasterSourceTileRenderer {
    func initialize(forDevice device: UInt64, colorPixelFormat: UInt64) {}
    
    func isTileRenderable(for tileID: CanonicalTileID, status: CustomRasterSourceTileStatus) -> Bool {
        return status == .required
    }
    
    func prerender(for parameters: CustomLayerRenderParameters, commandBuffer: UInt64) {}
    
    func renderToTile(for tileID: CanonicalTileID, commandEncoder: UInt64) {}
    
    func deinitialize() {}
}

struct CustomRenderView: View {
    let customRenderer = CustomRenderer()
    var rasterSourceClient: CustomRasterSourceClient {
        CustomRasterSourceClient.fromCustomRasterSourceTileRenderer(customRenderer)
    }
    var rasterSourceOptions: CustomRasterSourceOptions {
        CustomRasterSourceOptions(clientCallback: rasterSourceClient)
    }
    
    var body: some View {
        Map() {
            CustomRasterSource(id: "custom-raster-source", options: rasterSourceOptions)
            RasterLayer(id: "custom-raster-layer", source: "custom-raster-source")
        }
    }
}

@main
struct mapbox_testApp: App {
    var body: some Scene {
        WindowGroup {
            CustomRenderView()
        }
    }
}

Notes / preliminary analysis

Crash does not happen when isTileRenderable returns always false (which totally disables rendering)