static VertexLayout ReadVertexLayout(MemoryReader reader)
{
var layout = new VertexLayout();
layout.Begin();
var attributeCount = reader.Read <byte>();
var stride = reader.Read <ushort>();
for (int i = 0; i < attributeCount; i++)
{
var e = reader.Read <VertexElement>();
var usage = attributeUsageMap[e.Attrib];
layout.Add(usage, e.Count, attributeTypeMap[e.AttribType], e.Normalized != 0, e.AsInt != 0);
if (layout.GetOffset(usage) != e.Offset)
{
throw new InvalidOperationException("Invalid mesh data; vertex attribute offset mismatch.");
}
}
layout.End();
if (layout.Stride != stride)
{
throw new InvalidOperationException("Invalid mesh data; vertex layout stride mismatch.");
}
return(layout);
}
public static VertexLayout ReadVertexLayout(this UnmanagedMemoryAccessor reader, ref int index)
{
var layout = new VertexLayout();
layout.Begin();
var attributeCount = reader.ReadByte(ref index);
var stride = reader.ReadUInt16(ref index);
for (int i = 0; i < attributeCount; i++)
{
var offset = reader.ReadUInt16(ref index);
var attrib = reader.ReadUInt16(ref index);
var count = reader.ReadByte(ref index);
var attribType = reader.ReadUInt16(ref index);
var normalized = reader.ReadBool(ref index);
var asInt = reader.ReadBool(ref index);
var usage = attributeUsageMap[attrib];
layout.Add(usage, count, attributeTypeMap[attribType], normalized, asInt);
if (layout.GetOffset(usage) != offset)
{
throw new InvalidOperationException("Invalid mesh data; vertex attribute offset mismatch.");
}
}
layout.End();
if (layout.Stride != stride)
{
throw new InvalidOperationException("Invalid mesh data; vertex layout stride mismatch.");
}
return(layout);
}
public void InitRenderer(MTKView view, IMTLDevice device)
{
#if BGFX
var platformData = new PlatformData();
platformData.WindowHandle = view.Handle;
platformData.Context = device.Handle;
Bgfx.Bgfx.SetPlatformData(platformData);
var settings = new InitSettings();
settings.Backend = RendererBackend.Metal;
settings.Width = (int)view.Bounds.Width;
settings.Height = (int)view.Bounds.Height;
settings.ResetFlags = ResetFlags.Vsync;
settings.PlatformData = platformData;
//settings.limits.maxEncoders = 128;
Bgfx.Bgfx.ManuallyRenderFrame();
Bgfx.Bgfx.Init(settings);
var vertexLayout = new VertexLayout();
vertexLayout.Begin(RendererBackend.Metal);
vertexLayout.Add(VertexAttributeUsage.Position, 3, VertexAttributeType.Float);
vertexLayout.Add(VertexAttributeUsage.Color0, 4, VertexAttributeType.UInt8, true);
vertexLayout.End();
var vertexBuffer = new VertexBuffer(MemoryBlock.FromArray(Data.cubeVertices), vertexLayout);
var indexBuffer = new IndexBuffer(MemoryBlock.FromArray(Data.cubeTriList));
var vertexShader = LoadShader("vs_cubes.bin");
var fragmentShader = LoadShader("fs_cubes.bin");
var program = new Program(vertexShader, fragmentShader);
_vertexBuffer = vertexBuffer;
_indexBuffer = indexBuffer;
_program = program;
Bgfx.Bgfx.Touch(0);
#endif
view.Delegate = this;
}
private void InitGraphics()
{
var io = ImGui.GetIO();
io.DisplaySize = new System.Numerics.Vector2(Engine.Canvas.Width, Engine.Canvas.Height);
m_imgui_program = Engine.Content.Get <ShaderProgram>("imgui_shader");
m_imgui_tex_program = Engine.Content.Get <ShaderProgram>("imgui_shader_image");
m_vertex_layout = new VertexLayout();
m_vertex_layout.Begin();
m_vertex_layout.Add(Attrib.Position, AttribType.Float, 2, false, false);
m_vertex_layout.Add(Attrib.TexCoord0, AttribType.Float, 2, false, false);
m_vertex_layout.Add(Attrib.Color0, AttribType.Uint8, 4, true, false);
m_vertex_layout.End();
m_fonts.Add("default", io.Fonts.AddFontDefault());
unsafe
{
io.Fonts.GetTexDataAsRGBA32(out IntPtr data, out var width, out var height, out var bytes_per_pixel);
m_font_atlas = Texture2D.Create(data, width, height, bytes_per_pixel);
m_textures.Add((IntPtr)m_font_atlas.GetHashCode(), m_font_atlas);
}
m_font_atlas_tex_id = (IntPtr)m_font_atlas.GetHashCode();
io.Fonts.SetTexID(m_font_atlas_tex_id);
m_canvas_view = Engine.Canvas.CreateView(Color.Transparent);
m_vertex_stream = new VertexStream(VertexStreamMode.Stream);
m_vertex_stream.SetVertexLayout(m_vertex_layout);
}
