网站seo 最好,巴中网站建设有限公司,公司做网站一般多少钱,wordpress4.8版权修改Avalonia已经继承了opengl#xff0c;详细的大家可以自己查阅。Avalonia里面启用opengl继承OpenGlControlBase类就可以了。有三个方法。分别是初始化、绘制、释放。
这里把官方源码的例子扒出来给大家看一下。源码在我以前发布的单组件里面。地址在前面的界面总结博文里面。 …Avalonia已经继承了opengl详细的大家可以自己查阅。Avalonia里面启用opengl继承OpenGlControlBase类就可以了。有三个方法。分别是初始化、绘制、释放。
这里把官方源码的例子扒出来给大家看一下。源码在我以前发布的单组件里面。地址在前面的界面总结博文里面。
关键源码 public class OpenGlPageControl : OpenGlControlBase{private float _yaw;public static readonly DirectPropertyOpenGlPageControl, float YawProperty AvaloniaProperty.RegisterDirectOpenGlPageControl, float(Yaw, o o.Yaw, (o, v) o.Yaw v);public float Yaw{get _yaw;set SetAndRaise(YawProperty, ref _yaw, value);}private float _pitch;public static readonly DirectPropertyOpenGlPageControl, float PitchProperty AvaloniaProperty.RegisterDirectOpenGlPageControl, float(Pitch, o o.Pitch, (o, v) o.Pitch v);public float Pitch{get _pitch;set SetAndRaise(PitchProperty, ref _pitch, value);}private float _roll;public static readonly DirectPropertyOpenGlPageControl, float RollProperty AvaloniaProperty.RegisterDirectOpenGlPageControl, float(Roll, o o.Roll, (o, v) o.Roll v);public float Roll{get _roll;set SetAndRaise(RollProperty, ref _roll, value);}private float _disco;public static readonly DirectPropertyOpenGlPageControl, float DiscoProperty AvaloniaProperty.RegisterDirectOpenGlPageControl, float(Disco, o o.Disco, (o, v) o.Disco v);public float Disco{get _disco;set SetAndRaise(DiscoProperty, ref _disco, value);}private string _info string.Empty;public static readonly DirectPropertyOpenGlPageControl, string InfoProperty AvaloniaProperty.RegisterDirectOpenGlPageControl, string(Info, o o.Info, (o, v) o.Info v);public string Info{get _info;private set SetAndRaise(InfoProperty, ref _info, value);}private int _vertexShader;private int _fragmentShader;private int _shaderProgram;private int _vertexBufferObject;private int _indexBufferObject;private int _vertexArrayObject;private string GetShader(bool fragment, string shader){var version GlVersion.Type GlProfileType.OpenGL ?RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? 150 : 120 :100;var data #version version \n;if (GlVersion.Type GlProfileType.OpenGLES)data precision mediump float;\n;if (version 150){shader shader.Replace(attribute, in);if (fragment)shader shader.Replace(varying, in).Replace(//DECLAREGLFRAG, out vec4 outFragColor;).Replace(gl_FragColor, outFragColor);elseshader shader.Replace(varying, out);}data shader;return data;}private string VertexShaderSource GetShader(false, attribute vec3 aPos;attribute vec3 aNormal;uniform mat4 uModel;uniform mat4 uProjection;uniform mat4 uView;varying vec3 FragPos;varying vec3 VecPos; varying vec3 Normal;uniform float uTime;uniform float uDisco;void main(){float discoScale sin(uTime * 10.0) / 10.0;float distortionX 1.0 uDisco * cos(uTime * 20.0) / 10.0;float scale 1.0 uDisco * discoScale;vec3 scaledPos aPos;scaledPos.x scaledPos.x * distortionX;scaledPos * scale;gl_Position uProjection * uView * uModel * vec4(scaledPos, 1.0);FragPos vec3(uModel * vec4(aPos, 1.0));VecPos aPos;Normal normalize(vec3(uModel * vec4(aNormal, 1.0)));}
);private string FragmentShaderSource GetShader(true, varying vec3 FragPos; varying vec3 VecPos; varying vec3 Normal;uniform float uMaxY;uniform float uMinY;uniform float uTime;uniform float uDisco;//DECLAREGLFRAGvoid main(){float y (VecPos.y - uMinY) / (uMaxY - uMinY);float c cos(atan(VecPos.x, VecPos.z) * 20.0 uTime * 40.0 y * 50.0);float s sin(-atan(VecPos.z, VecPos.x) * 20.0 - uTime * 20.0 - y * 30.0);vec3 discoColor vec3(0.5 abs(0.5 - y) * cos(uTime * 10.0),0.25 (smoothstep(0.3, 0.8, y) * (0.5 - c / 4.0)),0.25 abs((smoothstep(0.1, 0.4, y) * (0.5 - s / 4.0))));vec3 objectColor vec3((1.0 - y), 0.40 y / 4.0, y * 0.75 0.25);objectColor objectColor * (1.0 - uDisco) discoColor * uDisco;float ambientStrength 0.3;vec3 lightColor vec3(1.0, 1.0, 1.0);vec3 lightPos vec3(uMaxY * 2.0, uMaxY * 2.0, uMaxY * 2.0);vec3 ambient ambientStrength * lightColor;vec3 norm normalize(Normal);vec3 lightDir normalize(lightPos - FragPos); float diff max(dot(norm, lightDir), 0.0);vec3 diffuse diff * lightColor;vec3 result (ambient diffuse) * objectColor;gl_FragColor vec4(result, 1.0);}
);[StructLayout(LayoutKind.Sequential, Pack 4)]private struct Vertex{public Vector3 Position;public Vector3 Normal;}private readonly Vertex[] _points;private readonly ushort[] _indices;private readonly float _minY;private readonly float _maxY;public OpenGlPageControl(){var name typeof(OpenGlPage).Assembly.GetManifestResourceNames().First(x x.Contains(teapot.bin));using (var sr new BinaryReader(typeof(OpenGlPage).Assembly.GetManifestResourceStream(name)!)){var buf new byte[sr.ReadInt32()];sr.Read(buf, 0, buf.Length);var points new float[buf.Length / 4];Buffer.BlockCopy(buf, 0, points, 0, buf.Length);buf new byte[sr.ReadInt32()];sr.Read(buf, 0, buf.Length);_indices new ushort[buf.Length / 2];Buffer.BlockCopy(buf, 0, _indices, 0, buf.Length);_points new Vertex[points.Length / 3];for (var primitive 0; primitive points.Length / 3; primitive){var srci primitive * 3;_points[primitive] new Vertex{Position new Vector3(points[srci], points[srci 1], points[srci 2])};}for (int i 0; i _indices.Length; i 3){Vector3 a _points[_indices[i]].Position;Vector3 b _points[_indices[i 1]].Position;Vector3 c _points[_indices[i 2]].Position;var normal Vector3.Normalize(Vector3.Cross(c - b, a - b));_points[_indices[i]].Normal normal;_points[_indices[i 1]].Normal normal;_points[_indices[i 2]].Normal normal;}for (int i 0; i _points.Length; i){_points[i].Normal Vector3.Normalize(_points[i].Normal);_maxY Math.Max(_maxY, _points[i].Position.Y);_minY Math.Min(_minY, _points[i].Position.Y);}}}private static void CheckError(GlInterface gl){int err;while ((err gl.GetError()) ! GlConsts.GL_NO_ERROR)Console.WriteLine(err);}protected override unsafe void OnOpenGlInit(GlInterface GL){CheckError(GL);Info $Renderer: {GL.GetString(GlConsts.GL_RENDERER)} Version: {GL.GetString(GlConsts.GL_VERSION)};// Load the source of the vertex shader and compile it._vertexShader GL.CreateShader(GlConsts.GL_VERTEX_SHADER);Console.WriteLine(GL.CompileShaderAndGetError(_vertexShader, VertexShaderSource));// Load the source of the fragment shader and compile it._fragmentShader GL.CreateShader(GlConsts.GL_FRAGMENT_SHADER);Console.WriteLine(GL.CompileShaderAndGetError(_fragmentShader, FragmentShaderSource));// Create the shader program, attach the vertex and fragment shaders and link the program._shaderProgram GL.CreateProgram();GL.AttachShader(_shaderProgram, _vertexShader);GL.AttachShader(_shaderProgram, _fragmentShader);const int positionLocation 0;const int normalLocation 1;GL.BindAttribLocationString(_shaderProgram, positionLocation, aPos);GL.BindAttribLocationString(_shaderProgram, normalLocation, aNormal);Console.WriteLine(GL.LinkProgramAndGetError(_shaderProgram));CheckError(GL);// Create the vertex buffer object (VBO) for the vertex data._vertexBufferObject GL.GenBuffer();// Bind the VBO and copy the vertex data into it.GL.BindBuffer(GlConsts.GL_ARRAY_BUFFER, _vertexBufferObject);CheckError(GL);var vertexSize Marshal.SizeOfVertex();fixed (void* pdata _points)GL.BufferData(GlConsts.GL_ARRAY_BUFFER, new nint(_points.Length * vertexSize),new nint(pdata), GlConsts.GL_STATIC_DRAW);_indexBufferObject GL.GenBuffer();GL.BindBuffer(GlConsts.GL_ELEMENT_ARRAY_BUFFER, _indexBufferObject);CheckError(GL);fixed (void* pdata _indices)GL.BufferData(GlConsts.GL_ELEMENT_ARRAY_BUFFER, new nint(_indices.Length * sizeof(ushort)), new nint(pdata),GlConsts.GL_STATIC_DRAW);CheckError(GL);_vertexArrayObject GL.GenVertexArray();GL.BindVertexArray(_vertexArrayObject);CheckError(GL);GL.VertexAttribPointer(positionLocation, 3, GlConsts.GL_FLOAT,0, vertexSize, nint.Zero);GL.VertexAttribPointer(normalLocation, 3, GlConsts.GL_FLOAT,0, vertexSize, new nint(12));GL.EnableVertexAttribArray(positionLocation);GL.EnableVertexAttribArray(normalLocation);CheckError(GL);}protected override void OnOpenGlDeinit(GlInterface GL){// Unbind everythingGL.BindBuffer(GlConsts.GL_ARRAY_BUFFER, 0);GL.BindBuffer(GlConsts.GL_ELEMENT_ARRAY_BUFFER, 0);GL.BindVertexArray(0);GL.UseProgram(0);// Delete all resources.GL.DeleteBuffer(_vertexBufferObject);GL.DeleteBuffer(_indexBufferObject);GL.DeleteVertexArray(_vertexArrayObject);GL.DeleteProgram(_shaderProgram);GL.DeleteShader(_fragmentShader);GL.DeleteShader(_vertexShader);}static Stopwatch St Stopwatch.StartNew();protected override unsafe void OnOpenGlRender(GlInterface gl, int fb){gl.ClearColor(0, 0, 0, 0);gl.Clear(GlConsts.GL_COLOR_BUFFER_BIT | GlConsts.GL_DEPTH_BUFFER_BIT);gl.Enable(GlConsts.GL_DEPTH_TEST);gl.Viewport(0, 0, (int)Bounds.Width, (int)Bounds.Height);var GL gl;GL.BindBuffer(GlConsts.GL_ARRAY_BUFFER, _vertexBufferObject);GL.BindBuffer(GlConsts.GL_ELEMENT_ARRAY_BUFFER, _indexBufferObject);GL.BindVertexArray(_vertexArrayObject);GL.UseProgram(_shaderProgram);CheckError(GL);var projection Matrix4x4.CreatePerspectiveFieldOfView((float)(Math.PI / 4), (float)(Bounds.Width / Bounds.Height),0.01f, 1000);var view Matrix4x4.CreateLookAt(new Vector3(25, 25, 25), new Vector3(), new Vector3(0, 1, 0));var model Matrix4x4.CreateFromYawPitchRoll(_yaw, _pitch, _roll);var modelLoc GL.GetUniformLocationString(_shaderProgram, uModel);var viewLoc GL.GetUniformLocationString(_shaderProgram, uView);var projectionLoc GL.GetUniformLocationString(_shaderProgram, uProjection);var maxYLoc GL.GetUniformLocationString(_shaderProgram, uMaxY);var minYLoc GL.GetUniformLocationString(_shaderProgram, uMinY);var timeLoc GL.GetUniformLocationString(_shaderProgram, uTime);var discoLoc GL.GetUniformLocationString(_shaderProgram, uDisco);GL.UniformMatrix4fv(modelLoc, 1, false, model);GL.UniformMatrix4fv(viewLoc, 1, false, view);GL.UniformMatrix4fv(projectionLoc, 1, false, projection);GL.Uniform1f(maxYLoc, _maxY);GL.Uniform1f(minYLoc, _minY);GL.Uniform1f(timeLoc, (float)St.Elapsed.TotalSeconds);GL.Uniform1f(discoLoc, _disco);CheckError(GL);GL.DrawElements(GlConsts.GL_TRIANGLES, _indices.Length, GlConsts.GL_UNSIGNED_SHORT, nint.Zero);CheckError(GL);if (_disco 0.01)RequestNextFrameRendering();}protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change){if (change.Property YawProperty || change.Property RollProperty || change.Property PitchProperty ||change.Property DiscoProperty)RequestNextFrameRendering();base.OnPropertyChanged(change);}}
另外还需要一个teapot.bin文件嵌入方式。你如果想运行还得下载源码或者下载我得代码。
运行效果
