//
// Unit tests for MPSStateResourceList
//
// Authors:
//	Alex Soto <alexsoto@microsoft.com>
//
//
// Copyright 2019 Microsoft Corporation.
//

#if !__WATCHOS__

using System;

using Foundation;
using Metal;
using MetalPerformanceShaders;

using NUnit.Framework;

namespace MonoTouchFixtures.MetalPerformanceShaders {
	[TestFixture]
	[Preserve (AllMembers = true)]
	public class MPSStateResourceListTests {

		IMTLDevice device;

		[OneTimeSetUp]
		public void Metal ()
		{
			TestRuntime.AssertDevice ();
			TestRuntime.AssertXcodeVersion (10, 0);
			TestRuntime.AssertNotVirtualMachine ();

			device = MTLDevice.SystemDefault;
			// some older hardware won't have a default
			if (device == null || !MPSKernel.Supports (device))
				Assert.Inconclusive ("Metal is not supported");
		}

		[Test]
		public void CreateTest ()
		{
			var resList = MPSStateResourceList.Create ();
			Assert.NotNull (resList, "Create");
		}

		[Test]
		public void MTLTextureDescriptorCreateTest ()
		{
			var arr = new MTLTextureDescriptor [10];
			for (nuint i = 0; i < 10; i++)
				arr [i] = MTLTextureDescriptor.CreateTexture2DDescriptor (MTLPixelFormat.Depth32Float, 50 + i, 50 + i, false);

			var resList = MPSStateResourceList.Create (arr[0], arr [1], arr [2], arr [3], arr [4], arr [5], arr [6], arr [7], arr [8], arr [9]);
			Assert.NotNull (resList, "resList");

			var state = new MPSState (device, resList);
			Assert.That (state.ResourceCount, Is.EqualTo ((nuint) 10), "ResourceCount");
		}

		[Test]
		public void SizesCreateTest ()
		{
			var resList = MPSStateResourceList.Create (1, 2, 3, 4, 5, 241);
			Assert.NotNull (resList, "resList");

			var state = new MPSState (device, resList);
			Assert.That (state.ResourceCount, Is.EqualTo ((nuint) 6), "ResourceCount");

			Assert.That (state.GetBufferSize (5), Is.EqualTo ((nuint) 241), "resList[5] = 241");
			Assert.That (state.GetBufferSize (2), Is.EqualTo ((nuint) 3), "resList[2] = 3");
		}
	}
}
#endif // !__WATCHOS__