Updated api

managed/SimpleRayTracer/Interop/SrtNative.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Numerics;
 using System.Runtime.InteropServices;
 
 namespace SimpleRayTracer.Interop;
@@ -22,6 +21,8 @@ internal static unsafe class SrtNative
     internal struct Vec2
     {
         public float x, y;
+
+        public static Vec2 Of(float x, float y) => new() { x = x, y = y };
     }
 
     [StructLayout(LayoutKind.Sequential)]
@@ -60,8 +61,8 @@ internal static unsafe class SrtNative
     [StructLayout(LayoutKind.Sequential)]
     internal struct CameraParams
     {
-        public Vector3 position;
-        public Quaternion rotation;
+        public Vec3 position;
+        public Quat rotation;
 
         public float focal_length;
         public float size_x;
@@ -71,8 +72,8 @@ internal static unsafe class SrtNative
     [StructLayout(LayoutKind.Sequential)]
     internal struct DirectionalLight
     {
-        public Vector3 direction;
-        public Vector3 color;
+        public Vec3 direction;
+        public Vec3 color;
         public float intensity;
         public float angular_diameter;
     }
@@ -94,7 +95,7 @@ internal static unsafe class SrtNative
     [StructLayout(LayoutKind.Sequential)]
     internal struct StandardLitProperties
     {
-        public Vector3 albedo;
+        public Vec3 albedo;
         public float diffuse_roughness;
         public float roughness;
         public float metallic;
@@ -137,11 +138,11 @@ internal static unsafe class SrtNative
     [StructLayout(LayoutKind.Sequential)]
     internal struct Vertex
     {
-        public Vector3 position;
-        public Vector3 normal;
-        public Vector3 tangent;
-        public Vector3 color;
-        public Vector2 uv;
+        public Vec3 position;
+        public Vec3 normal;
+        public Vec3 tangent;
+        public Vec3 color;
+        public Vec2 uv;
     }
 
     [StructLayout(LayoutKind.Sequential)]
@@ -153,6 +154,47 @@ internal static unsafe class SrtNative
         public uint material_id;
     }
 
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct MeshHandle
+    {
+        public uint model_id;
+        public uint instance_id;
+
+        public ulong triangle_id;
+        public ulong triangle_count;
+        public ushort material_id;
+        public ushort material_count;
+    }
+
+    internal enum SkyKind : uint
+    {
+        None = 0,
+        Constant = 1,
+        Hdr = 2,
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct SkyDesc
+    {
+        public uint kind;
+        public uint data_size;
+        public void* data;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct SkyConstantDesc
+    {
+        public Vec3 color;
+        public float intensity;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct SkyHdrDesc
+    {
+        public TextureHandle hdri;
+        public float intensity;
+    }
+
     [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
     internal static extern IntPtr srt_scene_create(ulong triangle_count, ushort texture_count, byte material_count, uint punctual_light_count);
 
@@ -180,6 +222,9 @@ internal static unsafe class SrtNative
     [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
     internal static extern Result srt_scene_set_sky_none(IntPtr scene);
 
+    [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
+    internal static extern Result srt_scene_set_sky(IntPtr scene, SkyDesc* desc);
+
     [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
     internal static extern Result srt_scene_set_sky_constant(IntPtr scene, Vec3 color, float intensity);
 
@@ -195,6 +240,9 @@ internal static unsafe class SrtNative
     [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
     internal static extern Result srt_scene_add_mesh_instance(IntPtr scene, uint model_id, Mat4* local_to_world, out uint instance_id);
 
+    [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
+    internal static extern Result srt_scene_load_mesh(IntPtr scene, [MarshalAs(UnmanagedType.LPUTF8Str)] string filename_utf8, out MeshHandle mesh);
+
     [DllImport(_DLL, CallingConvention = CallingConvention.Cdecl)]
     internal static extern Result srt_render_job_create(
         IntPtr scene,