C# SharpGL-DrawArrays提供AccessViolationException

我正在WPF中创建一个现代OpenGL hello world应用程序，使用SharpGL示例作为指南

在Draw方法中调用DrawArray时，我似乎遇到了AccessViolation异常。检查过互联网后，他们都认为这可能是底层GC重新定位阵列。但既然我使用的是VBOs，这就不应该发生，对吗

代码：

XAML：

XAML.cs

using SharpGL;
using SharpGL.Shaders;
using SharpGL.VertexBuffers;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace FirstSharpGlAppWpf
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{

    VertexBufferArray _vao;
    VertexBuffer _vbo;
    ShaderProgram _shaderProgram;
    float[] _vertices;


    public MainWindow()
    {
        InitializeComponent();



    }

    private void openGLCtrl_OpenGLDraw(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        //  Get the OpenGL instance that's been passed to us.
        OpenGL gl = args.OpenGL;

        gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

        _shaderProgram.Bind(gl);

        _vao.Bind(gl);

        gl.DrawArrays(OpenGL.GL_POINTS, 0, _vertices.Length);

        _vao.Unbind(gl);

        _shaderProgram.Unbind(gl);

    }


    private void openGLCtrl_OpenGLInitialized(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        var gl = args.OpenGL;

        _vertices = new float[]{
           -0.5f, -0.5f, 0.0f,
            0.5f, -0.5f, 0.0f,
            0.0f,  0.5f, 0.0f
        };

        ShaderCreator sc = new ShaderCreator();
        _shaderProgram = new ShaderProgram();
        sc.Create(gl, _shaderProgram);

        _vao = new VertexBufferArray();
        _vao.Create(gl);
        _vao.Bind(gl);

        _vbo = new VertexBuffer();
        _vbo.Create(gl);
        _vbo.Bind(gl);
        _vbo.SetData(gl, 0, _vertices, false, 0);


        _vbo.Unbind(gl);
        _vao.Unbind(gl);
    }




}

---

}

在您的代码中，您没有为着色器指定顶点颜色以及VAO属性，这是在屏幕上显示某些内容所必须的。您能告诉我着色器的VAO属性是什么吗？我添加了类似于添加顶点的颜色，但仍然没有乐趣。我不久前用OpenTK写的，对于OpenGL3.X来说，应该比较容易理解/翻译。

using SharpGL;
using SharpGL.Shaders;
using SharpGL.VertexBuffers;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace FirstSharpGlAppWpf
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{

    VertexBufferArray _vao;
    VertexBuffer _vbo;
    ShaderProgram _shaderProgram;
    float[] _vertices;


    public MainWindow()
    {
        InitializeComponent();



    }

    private void openGLCtrl_OpenGLDraw(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        //  Get the OpenGL instance that's been passed to us.
        OpenGL gl = args.OpenGL;

        gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

        _shaderProgram.Bind(gl);

        _vao.Bind(gl);

        gl.DrawArrays(OpenGL.GL_POINTS, 0, _vertices.Length);

        _vao.Unbind(gl);

        _shaderProgram.Unbind(gl);

    }


    private void openGLCtrl_OpenGLInitialized(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        var gl = args.OpenGL;

        _vertices = new float[]{
           -0.5f, -0.5f, 0.0f,
            0.5f, -0.5f, 0.0f,
            0.0f,  0.5f, 0.0f
        };

        ShaderCreator sc = new ShaderCreator();
        _shaderProgram = new ShaderProgram();
        sc.Create(gl, _shaderProgram);

        _vao = new VertexBufferArray();
        _vao.Create(gl);
        _vao.Bind(gl);

        _vbo = new VertexBuffer();
        _vbo.Create(gl);
        _vbo.Bind(gl);
        _vbo.SetData(gl, 0, _vertices, false, 0);


        _vbo.Unbind(gl);
        _vao.Unbind(gl);
    }




}