154 lines
4.8 KiB
C#
154 lines
4.8 KiB
C#
#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Diagnostics;
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using System.IO;
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using System.Drawing;
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using System.Drawing.Imaging;
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using OpenTK;
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using OpenTK.Graphics.OpenGL;
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using OpenTK.Graphics;
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using OpenTK.Graphics.OpenGL.Enums;
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namespace Examples.Tutorial
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{
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/// <summary>
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/// Demonstrates simple OpenGL Texturing.
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/// </summary>
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[Example("Texture mapping", ExampleCategory.Tutorial, 5)]
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public class Textures : GameWindow
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{
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Bitmap bitmap = new Bitmap("Data/logo.jpg");
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int texture;
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public Textures() : base(800, 600) { }
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#region OnLoad
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/// <summary>
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/// Setup OpenGL and load resources here.
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/// </summary>
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/// <param name="e">Not used.</param>
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public override void OnLoad(EventArgs e)
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{
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GL.ClearColor(Color.SteelBlue);
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GL.Enable(EnableCap.Texture2D);
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GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Nicest);
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GL.GenTextures(1, out texture);
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GL.BindTexture(TextureTarget.Texture2D, texture);
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BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
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ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
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GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
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OpenTK.Graphics.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
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bitmap.UnlockBits(data);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
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}
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#endregion
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#region OnUnload
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public override void OnUnload(EventArgs e)
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{
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GL.DeleteTextures(1, ref texture);
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}
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#endregion
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#region OnResize
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/// <summary>
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/// Respond to resize events here.
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/// </summary>
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/// <param name="e">Contains information on the new GameWindow size.</param>
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/// <remarks>There is no need to call the base implementation.</remarks>
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protected override void OnResize(OpenTK.Platform.ResizeEventArgs e)
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{
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GL.Viewport(0, 0, Width, Height);
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GL.MatrixMode(MatrixMode.Projection);
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GL.LoadIdentity();
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GL.Ortho(-1.0, 1.0, -1.0, 1.0, 0.0, 4.0);
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}
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#endregion
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#region OnUpdateFrame
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/// <summary>
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/// Add your game logic here.
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/// </summary>
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/// <param name="e">Contains timing information.</param>
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/// <remarks>There is no need to call the base implementation.</remarks>
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public override void OnUpdateFrame(UpdateFrameEventArgs e)
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{
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if (Keyboard[OpenTK.Input.Key.Escape])
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this.Exit();
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}
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#endregion
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#region OnRenderFrame
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/// <summary>
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/// Add your game rendering code here.
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/// </summary>
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/// <param name="e">Contains timing information.</param>
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/// <remarks>There is no need to call the base implementation.</remarks>
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public override void OnRenderFrame(RenderFrameEventArgs e)
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{
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GL.Clear(ClearBufferMask.ColorBufferBit);
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GL.MatrixMode(MatrixMode.Modelview);
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GL.LoadIdentity();
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GL.BindTexture(TextureTarget.Texture2D, texture);
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GL.Begin(BeginMode.Quads);
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GL.TexCoord2(0.0f, 1.0f); GL.Vertex2(-0.6f, -0.4f);
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GL.TexCoord2(1.0f, 1.0f); GL.Vertex2(0.6f, -0.4f);
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GL.TexCoord2(1.0f, 0.0f); GL.Vertex2(0.6f, 0.4f);
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GL.TexCoord2(0.0f, 0.0f); GL.Vertex2(-0.6f, 0.4f);
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GL.End();
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SwapBuffers();
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}
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#endregion
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#region public static void Main()
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/// <summary>
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/// Entry point of this example.
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/// </summary>
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[STAThread]
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public static void Main()
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{
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using (Textures example = new Textures())
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{
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// Get the title and category of this example using reflection.
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ExampleAttribute info = ((ExampleAttribute)typeof(Textures).GetCustomAttributes(false)[0]);
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example.Title = String.Format("OpenTK | {0} {1}: {2}", info.Category, info.Difficulty, info.Title);
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example.Run(30.0, 0.0);
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}
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}
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#endregion
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}
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}
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