Minor impr

Author: christiangnrd

lib/mtl/capture.jl

@@ -152,6 +152,10 @@ function stopCapture(manager::MTLCaptureManager=MTLCaptureManager())
     @objc [manager::id{MTLCaptureManager} stopCapture]::Nothing
 end
 
+"""
+    supports_destination(manager::MTLCaptureManager, destination::MTLCaptureDestination)
+Checks if a given capture destination is supported.
+"""
 function supports_destination(manager::MTLCaptureManager, destination::MTLCaptureDestination)
     @objc [manager::id{MTLCaptureManager} supportsDestination:destination::MTLCaptureDestination]::Bool
 end

test/capturing.jl

@@ -36,6 +36,10 @@ desc.captureObject = dev
 desc.destination = MTL.MTLCaptureDestinationGPUTraceDocument
 @test desc.destination == MTL.MTLCaptureDestinationGPUTraceDocument
 
+# Capture Manager supports destination
+@test !supports_destination(manager, MTL.MTLCaptureDestinationDeveloperTools)
+@test supports_destination(manager, MTL.MTLCaptureDestinationGPUTraceDocument)
+
 # Output URL
 @test desc.outputURL === nothing
 path = joinpath(tmpdir, "test.gputrace")
@@ -65,7 +69,7 @@ bufferA = MtlArray{Float32,1,SharedStorage}(undef, tuple(4))
 @test manager.isCapturing == false
 startCapture(manager, desc)
 @test manager.isCapturing
-@test_throws ErrorException startCapture(manager, desc)
+@test_throws "Capture manager is already capturing." startCapture(manager, desc)
 Metal.@sync @metal threads=4 tester(bufferA)
 stopCapture(manager)
 synchronize()