小编Sor*_*ors的帖子

我目前正在尝试使用OpenGL superbible和http://www.learnopengl.com/进入GLSL .我想要的环境是OpenTK.

我试图将" Hello Triangle "入门级教程从learnopengl.com转换为OpenTK,它意味着使用非常简单的着色器绘制三角形,而不使用任何透视/世界/模型转换.

我的结果只是颜色缓冲,但是一个空窗口,我根本不明白我在哪里犯了错误,所以任何寻找帮助,更重要的是理解他们将非常感激.

我的OpenTK代码:

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using OpenTK.Input;

namespace learnopengl.HelloTriangle
{
    public class MainWindow : GameWindow
    {
        int _shaderId;
        int _vao;
        int _glbuf;
        int _fragObj;
        int _vertexObj;
        Vector3[] _triangleVert;

        public MainWindow()
            : base(800,600)
        {
            KeyDown += MainWindow_KeyDown;
            _triangleVert = new Vector3[] { 
                new Vector3(-0.5f, -0.5f, 0.0f),
                new Vector3(0.5f, -0.5f, 0.0f),
                new Vector3(-0.5f, 0.5f, 0.0f)
            };

        }

        void MainWindow_KeyDown(object sender, KeyboardKeyEventArgs e)
        {
            if …

我试图给出IReadOnly对内部Collection对象的引用。这在大多数情况下效果很好，但如果我想将包含集合的字典转换为IReadOnlyDictionary包含IReadOnlyCollection.

这是一个代码示例：

    var list = new List<int>();
    IReadOnlyList<int> listReference = list; //works;

    var dictionary = new Dictionary<int, int>();
    IReadOnlyDictionary<int, int> dictionaryReference = dictionary; //works

    var nestedList = new List<List<int>>();
    IReadOnlyList<IReadOnlyList<int>> nestedReadOnlyListReference = nestedList; //works

    var nestedDictionary = new Dictionary<int, List<int>>();
    //IReadOnlyDictionary<int, IReadOnlyList<int>> nestedReadOnlyDictionaryReference = nestedDictionary; //does not work, can not implicitly convert

    //current workaround
    var nestedDictionaryReferenceHelper = new Dictionary<int, IReadOnlyList<int>>();
    foreach (var kvpNestedDictionary in nestedDictionary)
    {
        nestedDictionaryReferenceHelper.Add(kvpNestedDictionary.Key, (IReadOnlyList<int>)kvpNestedDictionary.Value);
    }
    IReadOnlyDictionary<int, IReadOnlyList<int>> nestedReadOnlyDictionaryReference …