public Mesh Load(Game game, string name)
{
unsafe {
ModelRoot root;
using (var stream = game.GetResourceStream(name))
root = ModelRoot.ReadGLB(stream, new SharpGLTF.Schema2.ReadSettings());
var primitive = root.LogicalMeshes[0].Primitives[0];
var indices = primitive.IndexAccessor;
var vertices = primitive.VertexAccessors["POSITION"];
var normals = primitive.VertexAccessors["NORMAL"];
var vertexArray = VertexArray.Gen();
using (vertexArray.Bind()) {
Buffer.CreateFromData(indices.SourceBufferView.Content,
BufferTargetARB.ElementArrayBuffer);
Buffer.CreateFromData(vertices.SourceBufferView.Content);
GFX.GL.EnableVertexAttribArray(POSITION_ATTRIB_INDEX);
GFX.GL.VertexAttribPointer(POSITION_ATTRIB_INDEX, 3,
(GLEnum)vertices.Encoding, vertices.Normalized,
(uint)vertices.SourceBufferView.ByteStride, (void *)vertices.ByteOffset);
Buffer.CreateFromData(normals.SourceBufferView.Content);
GFX.GL.EnableVertexAttribArray(NORMAL_ATTRIB_INDEX);
GFX.GL.VertexAttribPointer(NORMAL_ATTRIB_INDEX, 3,
(GLEnum)vertices.Encoding, vertices.Normalized,
(uint)vertices.SourceBufferView.ByteStride, (void *)vertices.ByteOffset);
}
var numVertices = vertices.Count;
var numTriangles = primitive.IndexAccessor.Count / 3;
return(new Mesh(vertexArray, numTriangles));
}
}
public Mesh Load(Game game, string name)
{
unsafe {
ModelRoot root;
using (var stream = game.GetResourceStream(name))
root = ModelRoot.ReadGLB(stream, new());
var primitive = root.LogicalMeshes[0].Primitives[0];
var indices = primitive.IndexAccessor;
var vertices = primitive.VertexAccessors["POSITION"];
var normals = primitive.VertexAccessors["NORMAL"];
var vertexArray = VertexArray.Gen();
using (vertexArray.Bind()) {
Buffer.CreateFromData(indices.SourceBufferView.Content,
BufferTargetARB.ElementArrayBuffer);
Buffer.CreateFromData(vertices.SourceBufferView.Content);
Gfx.Gl.EnableVertexAttribArray(PositionAttribIndex);
Gfx.Gl.VertexAttribPointer(PositionAttribIndex, 3,
(VertexAttribPointerType)vertices.Encoding, vertices.Normalized,
(uint)vertices.SourceBufferView.ByteStride, (void *)vertices.ByteOffset);
Buffer.CreateFromData(normals.SourceBufferView.Content);
Gfx.Gl.EnableVertexAttribArray(NormalAttribIndex);
Gfx.Gl.VertexAttribPointer(NormalAttribIndex, 3,
(VertexAttribPointerType)vertices.Encoding, vertices.Normalized,
(uint)vertices.SourceBufferView.ByteStride, (void *)vertices.ByteOffset);
}
var numTriangles = primitive.IndexAccessor.Count / 3;
return(new(vertexArray, numTriangles));
}
}