113 lines
3.0 KiB
C#
113 lines
3.0 KiB
C#
using System;
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using System.Diagnostics;
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using Diamond.Shaders;
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using OpenTK;
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using OpenTK.Graphics;
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using OpenTK.Graphics.OpenGL4;
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using Diamond;
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using Diamond.Attributes;
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using Buffer = Diamond.Buffer;
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namespace hexworld
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{
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[VertexData()]
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public struct Vert
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{
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[VertexAttrib(0, 2)]
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public Vector2 Position;
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public Vert(float x, float y)
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{
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Position = new Vector2(x, y);
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}
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}
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public class HexRender : GameWindow
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{
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public HexRender(int width, int height)
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: base(width, height, new GraphicsMode(32, 24, 0, 0))
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{
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Width = width;
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Height = height;
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X = (DisplayDevice.Default.Width - Width) / 2;
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Y = (DisplayDevice.Default.Height - Height) / 2;
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}
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private VertexArray _triVao;
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private Buffer<Vert> _triVbo;
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private Program _whitePgm;
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private VertexArray _recVao;
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private Buffer<Vert> _recVbo;
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private Program _redPgm;
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/// <inheritdoc />
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protected override void OnLoad(EventArgs e)
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{
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base.OnLoad(e);
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using (var vs = Shader.FromFile("res/direct.vs.glsl"))
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using (var red = Shader.FromFile("res/red.fs.glsl"))
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using (var white = Shader.FromFile("res/white.fs.glsl"))
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{
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_whitePgm = Program.FromShaders(vs, red);
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_redPgm = Program.FromShaders(vs, white);
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}
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_triVbo = Buffer.FromData(new[]
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{
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new Vert(-.8f, -.8f),
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new Vert(+.8f, -.8f),
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new Vert(+.0f, +.8f)
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});
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Program.Current = _redPgm;
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_triVao = VertexArray.Create();
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_triVao.Attach(_triVbo);
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_recVbo = Buffer.FromData(new[]
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{
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new Vert(-.9f, -.5f),
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new Vert(+.9f, -.5f),
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new Vert(+.9f, +.5f),
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new Vert(+.9f, +.5f),
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new Vert(-.9f, +.5f),
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new Vert(-.9f, -.5f)
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});
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Program.Current = _whitePgm;
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_recVao = VertexArray.Create();
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_recVao.Attach(_recVbo);
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}
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/// <inheritdoc />
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protected override void OnUnload(EventArgs e)
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{
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base.OnUnload(e);
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_triVbo?.Dispose();
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_recVbo?.Dispose();
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_whitePgm?.Dispose();
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_redPgm?.Dispose();
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}
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/// <inheritdoc />
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protected override void OnRenderFrame(FrameEventArgs e)
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{
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base.OnRenderFrame(e);
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GL.Viewport(ClientRectangle);
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GL.Clear(ClearBufferMask.ColorBufferBit);
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Program.Current = _redPgm;
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VertexArray.Current = _triVao;
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GL.DrawArrays(PrimitiveType.Triangles, 0, 3);
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Program.Current = _whitePgm;
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VertexArray.Current = _recVao;
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GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
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SwapBuffers();
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}
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}
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} |