C＃XNA VertexBuffer无法渲染纹理

Question

我正在尝试制作3D XNA游戏，但是当我尝试加载我的模型时，它无法呈现纹理和光线剂量确实起作用，看起来大多只是黑色，但模型形状是正确的。

在游戏中寻找：

应该看：

代码：

class Floor
{
    private int floorWidth;
    private int floorHeight;
    private VertexBuffer floorBuffer;
    private IndexBuffer indexBuffer;
    private GraphicsDevice device;

    public Floor(GraphicsDevice device, int width, int height)
    {
        this.device = device;
        this.floorWidth = width;
        this.floorHeight = height;

        BuildFloorBuffer();
    }

    private void BuildFloorBuffer()
    {
        List<short> indexList = new List<short>();
        List<VertexPositionNormalTexture> vertexList = new List<VertexPositionNormalTexture>();

        foreach (ModelMesh mesh in Game1.myModel.Meshes)
        {
            foreach (ModelMeshPart part in mesh.MeshParts)
            {
                VertexPositionNormalTexture[] vertexArray = new VertexPositionNormalTexture[part.VertexBuffer.VertexCount];
                part.VertexBuffer.GetData<VertexPositionNormalTexture>(vertexArray);
                vertexList.AddRange(vertexArray.ToList());

                short[] indexArray = new short[part.IndexBuffer.IndexCount];
                part.IndexBuffer.GetData<short>(indexArray);
                indexList.AddRange(indexArray);
            }
        }

        floorBuffer = new VertexBuffer(device, VertexPositionNormalTexture.VertexDeclaration, vertexList.Count, BufferUsage.None);
        floorBuffer.SetData<VertexPositionNormalTexture>(vertexList.ToArray());

        indexBuffer = new IndexBuffer(device, IndexElementSize.SixteenBits, sizeof(short) * indexList.Count, BufferUsage.None);
        indexBuffer.SetData<short>(indexList.ToArray());
    }

    public void Draw(Camera camera,  BasicEffect effect)
    {
        effect.VertexColorEnabled = false;
        effect.TextureEnabled = true;
        effect.LightingEnabled = true;

        effect.View = camera.View;
        effect.Projection = camera.Projection;
        effect.World = Matrix.Identity;

        effect.EnableDefaultLighting();

        foreach(EffectPass pass in effect.CurrentTechnique.Passes)
        {
            pass.Apply();

            device.Indices = indexBuffer;
            device.SetVertexBuffer(floorBuffer);
            device.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, floorBuffer.VertexCount, 0, floorBuffer.VertexCount);
        }
    }
}