public static GLKMesh [] FromAsset(MDLAsset asset, out MDLMesh [] sourceMeshes, out NSError error)
{
NSArray aret;
var ret = FromAsset(asset, out aret, out error);
sourceMeshes = NSArray.FromArray <MDLMesh> (aret);
return(ret);
}
public void BoundingBoxTest()
{
using (var obj = new MDLAsset()) {
MDLAxisAlignedBoundingBox box = new MDLAxisAlignedBoundingBox(
new Vector3(-1, -1, -1),
new Vector3(0, 0, 0)
);
Asserts.AreEqual(box, obj.BoundingBox, "BoundingBox");
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// Set the view to use the default device
device = MTLDevice.SystemDefault;
if (device == null)
{
Console.WriteLine("Metal is not supported on this device");
View = new NSView(View.Frame);
}
// Create a new command queue
commandQueue = device.CreateCommandQueue();
// Load all the shader files with a metal file extension in the project
defaultLibrary = device.CreateDefaultLibrary();
// Setup view
mtkView = (MTKView)View;
mtkView.Delegate = this;
mtkView.Device = device;
mtkView.SampleCount = 1;
mtkView.DepthStencilPixelFormat = MTLPixelFormat.Depth32Float_Stencil8;
mtkView.ColorPixelFormat = MTLPixelFormat.BGRA8Unorm;
mtkView.PreferredFramesPerSecond = 60;
mtkView.ClearColor = new MTLClearColor(0.5f, 0.5f, 0.5f, 1.0f);
// Load the vertex program into the library
IMTLFunction vertexProgram = defaultLibrary.CreateFunction("mesh_vertex");
// Load the fragment program into the library
IMTLFunction fragmentProgram = defaultLibrary.CreateFunction("mesh_fragment");
// Generate meshes
MTKMeshBufferAllocator mtkBufferAllocator = new MTKMeshBufferAllocator(device);
NSUrl url = NSBundle.MainBundle.GetUrlForResource("Fighter", "obj");
MDLAsset mdlAsset = new MDLAsset(url, new MDLVertexDescriptor(), mtkBufferAllocator);
MDLObject mdlObject = mdlAsset.GetObject(0);
MDLMesh mdlMesh = mdlObject as MDLMesh;
NSError error;
objMesh = new MTKMesh(mdlMesh, device, out error);
// Create a vertex descriptor from the MTKMesh
MTLVertexDescriptor vertexDescriptor = MTLVertexDescriptor.FromModelIO(objMesh.VertexDescriptor);
vertexDescriptor.Layouts[0].StepRate = 1;
vertexDescriptor.Layouts[0].StepFunction = MTLVertexStepFunction.PerVertex;
this.clock = new System.Diagnostics.Stopwatch();
clock.Start();
this.view = CreateLookAt(new Vector3(0, 1, 2), new Vector3(0, 0, 0), Vector3.UnitY);
var aspect = (float)(View.Bounds.Size.Width / View.Bounds.Size.Height);
this.proj = Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, aspect, 0.1f, 100);
this.constantBuffer = device.CreateBuffer((uint)Marshal.SizeOf(this.param), MTLResourceOptions.CpuCacheModeDefault);
// Create a reusable pipeline state
var pipelineStateDescriptor = new MTLRenderPipelineDescriptor
{
SampleCount = mtkView.SampleCount,
VertexFunction = vertexProgram,
FragmentFunction = fragmentProgram,
VertexDescriptor = vertexDescriptor,
DepthAttachmentPixelFormat = mtkView.DepthStencilPixelFormat,
StencilAttachmentPixelFormat = mtkView.DepthStencilPixelFormat
};
pipelineStateDescriptor.ColorAttachments[0].PixelFormat = mtkView.ColorPixelFormat;
pipelineState = device.CreateRenderPipelineState(pipelineStateDescriptor, out error);
if (pipelineState == null)
{
Console.WriteLine("Failed to created pipeline state, error {0}", error);
}
var depthStateDesc = new MTLDepthStencilDescriptor
{
DepthCompareFunction = MTLCompareFunction.Less,
DepthWriteEnabled = true
};
depthState = device.CreateDepthStencilState(depthStateDesc);
NSImage image = NSImage.ImageNamed("Fighter_Diffuse.jpg");
MTKTextureLoader mTKTextureLoader = new MTKTextureLoader(device);
this.texture = mTKTextureLoader.FromCGImage(image.CGImage, new MTKTextureLoaderOptions(), out error);
MTLSamplerDescriptor samplerDescriptor = new MTLSamplerDescriptor()
{
MinFilter = MTLSamplerMinMagFilter.Linear,
MagFilter = MTLSamplerMinMagFilter.Linear,
SAddressMode = MTLSamplerAddressMode.ClampToEdge,
TAddressMode = MTLSamplerAddressMode.ClampToEdge,
};
this.sampler = device.CreateSamplerState(samplerDescriptor);
}
void LoadAssets()
{
// Load the fragment program into the library.
IMTLFunction fragmentProgram = defaultLibrary.CreateFunction("fragmentLight");
// Load the vertex program into the library.
IMTLFunction vertexProgram = defaultLibrary.CreateFunction("vertexLight");
/*
* Create a vertex descriptor for our Metal pipeline. Specifies the layout
* of vertices the pipeline should expect.
*/
var mtlVertexDescriptor = new MTLVertexDescriptor();
// Positions.
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].Format = MTLVertexFormat.Float3;
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].Offset = 0;
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Normals.
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].Format = MTLVertexFormat.Float3;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].Offset = 12;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Texture coordinates.
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].Format = MTLVertexFormat.Half2;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].Offset = 24;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Single interleaved buffer.
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].Stride = 28;
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].StepRate = 1;
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].StepFunction = MTLVertexStepFunction.PerVertex;
// Create a reusable pipeline state
var pipelineStateDescriptor = new MTLRenderPipelineDescriptor {
Label = "MyPipeline",
SampleCount = view.SampleCount,
VertexFunction = vertexProgram,
FragmentFunction = fragmentProgram,
VertexDescriptor = mtlVertexDescriptor
};
pipelineStateDescriptor.ColorAttachments [0].PixelFormat = view.ColorPixelFormat;
pipelineStateDescriptor.DepthAttachmentPixelFormat = view.DepthStencilPixelFormat;
pipelineStateDescriptor.StencilAttachmentPixelFormat = view.DepthStencilPixelFormat;
NSError error;
pipelineState = device.CreateRenderPipelineState(pipelineStateDescriptor, out error);
if (pipelineState == null)
{
Console.WriteLine("Failed to created pipeline state, error {0}", error.LocalizedDescription);
}
var depthStateDesc = new MTLDepthStencilDescriptor {
DepthCompareFunction = MTLCompareFunction.Less,
DepthWriteEnabled = true,
};
depthState = device.CreateDepthStencilState(depthStateDesc);
/*
* From our Metal vertex descriptor, create a Model I/O vertex descriptor we'll
* load our asset with. This specifies the layout of vertices Model I/O should
* format loaded meshes with.
*/
var mdlVertexDescriptor = MDLVertexDescriptor.FromMetal(mtlVertexDescriptor);
mdlVertexDescriptor.Attributes.GetItem <MDLVertexAttribute> ((int)VertexAttributes.Position).Name = MDLVertexAttributes.Position;
mdlVertexDescriptor.Attributes.GetItem <MDLVertexAttribute> ((int)VertexAttributes.Normal).Name = MDLVertexAttributes.Normal;
mdlVertexDescriptor.Attributes.GetItem <MDLVertexAttribute> ((int)VertexAttributes.Texcoord).Name = MDLVertexAttributes.TextureCoordinate;
var bufferAllocator = new MTKMeshBufferAllocator(device);
NSUrl assetUrl = NSBundle.MainBundle.GetUrlForResource("Data/Assets/realship/realship.obj", string.Empty);
if (assetUrl == null)
{
Console.WriteLine("Could not find asset.");
}
/*
* Load Model I/O Asset with mdlVertexDescriptor, specifying vertex layout and
* bufferAllocator enabling ModelIO to load vertex and index buffers directory
* into Metal GPU memory.
*/
var asset = new MDLAsset(assetUrl, mdlVertexDescriptor, bufferAllocator);
// Create MetalKit meshes.
MDLMesh[] mdlMeshes;
NSError mtkError;
var mtkMeshes = MTKMesh.FromAsset(asset, device, out mdlMeshes, out mtkError);
if (mtkMeshes == null)
{
Console.WriteLine("Failed to create mesh, error {0}", error.LocalizedDescription);
return;
}
// Create our array of App-Specific mesh wrapper objects.
meshes = new List <MetalKitEssentialsMesh> ();
for (int i = 0; i < mtkMeshes.Length; i++)
{
var mtkMesh = mtkMeshes [i];
var mdlMesh = mdlMeshes [(nuint)i];
var mesh = new MetalKitEssentialsMesh(mtkMesh, mdlMesh, device);
meshes.Add(mesh);
}
for (int i = 0; i < maxInflightBuffers; i++)
{
frameUniformBuffers [i] = device.CreateBuffer((nuint)Marshal.SizeOf <FrameUniforms> (), MTLResourceOptions.CpuCacheModeDefault);
}
}
void LoadAssets ()
{
IMTLFunction fragmentProgram = defaultLibrary.CreateFunction ("fragmentLight");
IMTLFunction vertexProgram = defaultLibrary.CreateFunction ("vertexLight");
var mtlVertexDescriptor = new MTLVertexDescriptor ();
// Positions.
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].Format = MTLVertexFormat.Float3;
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].Offset = 0;
mtlVertexDescriptor.Attributes [(int)VertexAttributes.Position].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Normals.
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].Format = MTLVertexFormat.Float3;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].Offset = 12;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Normal].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Texture coordinates.
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].Format = MTLVertexFormat.Half2;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].Offset = 24;
mtlVertexDescriptor.Attributes[(int)VertexAttributes.Texcoord].BufferIndex = (nuint)(int)BufferIndex.MeshVertexBuffer;
// Single interleaved buffer.
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].Stride = 28;
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].StepRate = 1;
mtlVertexDescriptor.Layouts[(int)BufferIndex.MeshVertexBuffer].StepFunction = MTLVertexStepFunction.PerVertex;
// Create a reusable pipeline state
var pipelineStateDescriptor = new MTLRenderPipelineDescriptor {
Label = "MyPipeline",
SampleCount = view.SampleCount,
VertexFunction = vertexProgram,
FragmentFunction = fragmentProgram,
VertexDescriptor = mtlVertexDescriptor
};
pipelineStateDescriptor.ColorAttachments [0].PixelFormat = view.ColorPixelFormat;
pipelineStateDescriptor.DepthAttachmentPixelFormat = view.DepthStencilPixelFormat;
pipelineStateDescriptor.StencilAttachmentPixelFormat = view.DepthStencilPixelFormat;
NSError error;
pipelineState = device.CreateRenderPipelineState (pipelineStateDescriptor, out error);
if (pipelineState == null)
Console.WriteLine ("Failed to created pipeline state, error {0}", error.LocalizedDescription);
var depthStateDesc = new MTLDepthStencilDescriptor {
DepthCompareFunction = MTLCompareFunction.Less,
DepthWriteEnabled = true,
};
depthState = device.CreateDepthStencilState (depthStateDesc);
var mdlVertexDescriptor = MDLVertexDescriptor.FromMetal (mtlVertexDescriptor);
mdlVertexDescriptor.Attributes.GetItem<MDLVertexAttribute> ((int)VertexAttributes.Position).Name = MDLVertexAttributes.Position;
mdlVertexDescriptor.Attributes.GetItem<MDLVertexAttribute> ((int)VertexAttributes.Normal).Name = MDLVertexAttributes.Normal;
mdlVertexDescriptor.Attributes.GetItem<MDLVertexAttribute> ((int)VertexAttributes.Texcoord).Name = MDLVertexAttributes.TextureCoordinate;
var bufferAllocator = new MTKMeshBufferAllocator (device);
NSUrl assetUrl = NSBundle.MainBundle.GetUrlForResource ("Data/Assets/realship/realship.obj", string.Empty);
if (assetUrl == null)
Console.WriteLine ("Could not find asset.");
// Create MetalKit meshes.
MTKMesh[] mtkMeshes;
NSArray mdlMeshes;
NSError mtkError;
var asset = new MDLAsset (assetUrl, mdlVertexDescriptor, bufferAllocator);
mtkMeshes = MTKMesh.FromAsset (asset, device, out mdlMeshes, out mtkError);
if (mtkMeshes == null) {
Console.WriteLine ("Failed to create mesh, error {0}", error.LocalizedDescription);
return;
}
meshes = new List<MetalKitEssentialsMesh> ();
for (int i = 0; i < mtkMeshes.Length; i++) {
var mtkMesh = mtkMeshes [i];
var mdlMesh = mdlMeshes.GetItem<MDLMesh> ((nuint)i);
var mesh = new MetalKitEssentialsMesh (mtkMesh, mdlMesh, device);
meshes.Add (mesh);
}
for (int i = 0; i < maxInflightBuffers; i++)
frameUniformBuffers [i] = device.CreateBuffer ((nuint)Marshal.SizeOf<FrameUniforms> (), MTLResourceOptions.CpuCacheModeDefault);
}
