Monogame 程序不断随机丢弃大量帧
我遇到的问题是程序以 60 fps 流畅运行，但随后 fps 随机下降到接近 0。帧丢失的频率似乎与矩形的数量有关。
这是每帧调用的绘制代码（块是矩形数组）
/// <summary>
/// Draw logic. Activates every frame.
/// </summary>
/// <param name="gameTime">How long the program has been running for</param>
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.Chocolate);
foreach (var a in blocks)
a.Draw();
fps++;
if (gameTime.TotalGameTime.Milliseconds % 1000 == 0 && enableFpsCounter)
{
Console.WriteLine(fps);
fps = 0;
}
base.Draw(gameTime);
}
只有在有大量矩形（~25 个矩形）时才会出现此问题
这是展示此问题的 gif： https://gyazo.com/ec41cacd6c89a41c330e151108590050
感谢您的阅读，我很感激能得到的任何帮助。
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1回答
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繁星coding
我设法通过使 RasterizerState 在构造函数而不是 Draw 方法中启动来解决这个问题：using System;using Microsoft.Xna.Framework;using Microsoft.Xna.Framework.Graphics;namespace BlockMonglerFixed1{ public class Rectangle { /// <summary> /// Width of the rectangle /// </summary> public int Width { get; set; } /// <summary> /// Height of the rectangle /// </summary> public int Height { get; set; } /// <summary> /// Length of the rectangle /// </summary> public int Length { get; set; } /// <summary> /// Position of the rectangle /// </summary> public Vector3 Position { get; set; } /// <summary> /// Rotation vector3 of the rectangle. X = pitch. Y = yaw. Z = roll /// </summary> public Vector3 Rotation { get; set; } /// <summary> /// GraphicsDevice used to draw the rectangle /// </summary> public GraphicsDevice GraphicsDevice { get; set; } /// <summary> /// BasicEffect used to to draw the rectangle /// </summary> public BasicEffect Effect { get; set; } /// <summary> /// Color of the rectangle. Not used if a texture is being used /// </summary> public Color Color { get; set; } /// <summary> /// Texture of the rectangle. Not used if a color is being used. /// </summary> public Texture3D Texture { get; set; } /// <summary> /// Determines if the rectangle should move based on its rotation /// </summary> public bool MoveBasedOnRotation { get; set; } int _vertexLength; VertexBuffer _buffer; RasterizerState _rasterizerState; /// <summary> /// Cube constructor. Generates a new rectangle /// </summary> /// <param name="width">Width of rectangle</param> /// <param name="height">Height of rectangle</param> /// <param name="length">Length of rectangle</param> /// <param name="position">Position of the rectangle></param> /// <param name="rotation">Rotation of the rectangle. This value rotates the rectangle</param> /// <param name="graphicsDevice">GraphicsDevice used to draw the rectangle</param> /// <param name="effect">Effect of rectangle</param> /// <param name="color">Color of rectangle</param> /// <param name="moveBasedOnRotation">Determines if the rectangle should move based on its rotation</param> public Rectangle(int width, int height, int length, Vector3 position, Vector3 rotation, GraphicsDevice graphicsDevice, BasicEffect effect, Color color, bool moveBasedOnRotation) { //Dimensions of the rectangle Width = width; Height = height; Length = length * 2; //Position setup Position = position; //Rotation setup Rotation = rotation; MoveBasedOnRotation = moveBasedOnRotation; //Effect setup Effect = effect; //Color setup Color = color; //Graphics device setup. GraphicsDevice = graphicsDevice; //Cube setup VertexPositionColor[] vertexPositionColors = { //Face 1 new VertexPositionColor(new Vector3(-Width, Height, 0), Color), new VertexPositionColor(new Vector3(-Width, -Height, 0), Color), new VertexPositionColor(new Vector3(Width, -Height, 0), Color), new VertexPositionColor(new Vector3(-Width, Height, 0), Color), new VertexPositionColor(new Vector3(Width, Height, 0), Color), new VertexPositionColor(new Vector3(Width, -Height, 0), Color), //Face 2 new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), new VertexPositionColor(new Vector3(Width, Height, -Length), Color), new VertexPositionColor(new Vector3(Width, -Height, -Length), Color), //Side 1 new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, -Height, 0), Color), new VertexPositionColor(new Vector3(-Width, Height, 0), Color), new VertexPositionColor(new Vector3(-Width, -Height, 0), Color), new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), //Side 2 new VertexPositionColor(new Vector3(Width, Height, 0), Color), new VertexPositionColor(new Vector3(Width, -Height, 0), Color), new VertexPositionColor(new Vector3(Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(Width, Height, -Length), Color), new VertexPositionColor(new Vector3(Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(Width, Height, 0), Color), //Bottom new VertexPositionColor(new Vector3(-Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, -Height, 0), Color), new VertexPositionColor(new Vector3(Width, -Height, 0), Color), new VertexPositionColor(new Vector3(-Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(Width, -Height, -Length), Color), new VertexPositionColor(new Vector3(Width, -Height, 0), Color), //Top new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), new VertexPositionColor(new Vector3(-Width, Height, 0), Color), new VertexPositionColor(new Vector3(Width, Height, 0), Color), new VertexPositionColor(new Vector3(-Width, Height, -Length), Color), new VertexPositionColor(new Vector3(Width, Height, -Length), Color), new VertexPositionColor(new Vector3(Width, Height, 0), Color), }; //Length setup _vertexLength = vertexPositionColors.Length; //Buffer setup _buffer = new VertexBuffer(GraphicsDevice, typeof(VertexPositionColor), _vertexLength, BufferUsage.WriteOnly); //Set data of the buffer to the vertexList _buffer.SetData(vertexPositionColors); _rasterizerState = new RasterizerState {CullMode = CullMode.None}; GraphicsDevice.RasterizerState = _rasterizerState; } public Rectangle(int width, int height, int length, Matrix worldMatrix, Matrix projectionMatrix, Matrix viewMatrix, GraphicsDevice graphicsDevice, BasicEffect effect, Texture3D texture) { throw new NotImplementedException(); } /// <summary> /// Sees if the rectangle collides with another object /// </summary> /// <param name="otherRectangle">Rectangle to detect collision with</param> public bool IsColliding(Rectangle otherRectangle) { //Get the minimum values of our position float minX = Position.X - Width; float minY = Position.Y - Height; float minZ = Position.Z - Length / 2f; //Get the maximum values of our position float maxX = Position.X + Width; float maxY = Position.Y + Height; float maxZ = Position.Z + Length / 2f; //Get the minimum values of the other rectangle's position float otherMinX = otherRectangle.Position.X - otherRectangle.Width; float otherMinY = otherRectangle.Position.Y - otherRectangle.Height; float otherMinZ = otherRectangle.Position.Z - otherRectangle.Length / 2f; //Get the maximum values of the other rectangle's positions float otherMaxX = otherRectangle.Position.X + otherRectangle.Width; float otherMaxY = otherRectangle.Position.Y + otherRectangle.Height; float otherMaxZ = otherRectangle.Position.Z + otherRectangle.Length / 2f; //We can calculate if one rectangle is in another by seeing if one of our sides is inside another rectangle return minX <= otherMaxX && maxX >= otherMinX && minY <= otherMaxY && maxY >= otherMinY && minZ <= otherMaxZ && maxZ >= otherMinZ; } /// <summary> /// Draws the triangle to the screen /// </summary> public void Draw() { //Hold the current position Vector3 tempPosition = Position; //Create a new matrix with the position and rotation Matrix effectWorldMatrix = Matrix.CreateWorld(Vector3.Zero, Vector3.Forward, Vector3.Up) * Matrix.CreateTranslation(-new Vector3(0, 0, -Length / 2f)) * Matrix.CreateRotationX(Rotation.X) * Matrix.CreateRotationY(Rotation.Y) * Matrix.CreateRotationZ(Rotation.Z) * Matrix.CreateTranslation(Position); //If MoveBasedOnRotation is true, set the translation of our new matrix to the previous translation //if (!MoveBasedOnRotation) effectWorldMatrix.Translation = tempPosition; //Set the effect to our respective matrices; Effect.World = effectWorldMatrix; Effect.View = Camera.ViewMatrix; Effect.Projection = Camera.ProjectionMatrix; //Apply our vertex buffer to the graphics device GraphicsDevice.SetVertexBuffer(_buffer); foreach (EffectPass pass in Effect.CurrentTechnique.Passes) { //Apply the pass pass.Apply(); //Use the graphics device to draw the triangle GraphicsDevice.DrawPrimitives(PrimitiveType.TriangleList, 0, _vertexLength); } } }}
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