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Changed background color to SteelBlue. Added ExampleAttribute.

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This commit is contained in:
the_fiddler 2007-11-10 23:31:01 +00:00
parent db06500dd2
commit 3bdcc9dbcf
3 changed files with 102 additions and 78 deletions
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37
Source/Examples/ExampleAttribute.cs Normal file
View file

@ -0,0 +1,37 @@
#region --- License ---
/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
* See license.txt for license info
*/
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace Examples
{
[AttributeUsage(AttributeTargets.Class)]
public class ExampleAttribute : System.Attribute
{
public readonly string Title;
public readonly ExampleCategory Category;
public readonly int Order;
public ExampleAttribute(string title, ExampleCategory category, int order)
{
this.Title = title;
this.Category = category;
this.Order = order;
}
}
public enum ExampleCategory
{
OpenGL,
OpenAL,
OpenTK,
GLSL,
WinForms,
Test,
}
}

10
Source/Examples/Tutorial/T01_Simple_Window.cs
View file

@ -33,7 +33,7 @@ namespace Examples.Tutorial
/// <param name="e">Not used.</param>
public override void OnLoad(EventArgs e)
{
GL.ClearColor(Color.MidnightBlue);
GL.ClearColor(Color.SteelBlue);
}
#endregion
@ -47,7 +47,7 @@ namespace Examples.Tutorial
/// <remarks>There is no need to call the base implementation.</remarks>
protected override void OnResize(OpenTK.Platform.ResizeEventArgs e)
{
GL.Viewport(0, 0, e.Width, e.Height);
GL.Viewport(0, 0, Width, Height);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
@ -88,11 +88,11 @@ namespace Examples.Tutorial
GL.Begin(BeginMode.Triangles);
GL.Color3(Color.SpringGreen);
GL.Color3(Color.LightSteelBlue);
GL.Vertex2(-1.0f, 1.0f);
GL.Color3(Color.SteelBlue);
GL.Color3(Color.SpringGreen);
GL.Vertex2(0.0f, -1.0f);
GL.Color3(Color.PeachPuff);
GL.Color3(Color.Ivory);
GL.Vertex2(1.0f, 1.0f);
GL.End();

133
Source/Examples/Tutorial/T10_GLSL_Cube.cs
View file

@ -27,6 +27,7 @@ namespace Examples.Tutorial
/// <summary>
/// Demonstrates how to load and use a simple OpenGL shader program. Example is incomplete (documentation).
/// </summary>
[Example("OpenTK | GLSL Example 1", ExampleCategory.GLSL, 1)]
public class T10_GLSL_Cube : GameWindow, IExample
{
#region --- Fields ---
@ -35,15 +36,16 @@ namespace Examples.Tutorial
int vertex_shader_object, fragment_shader_object, shader_program;
int vertex_buffer_object, color_buffer_object, element_buffer_object;
Shapes.Shape shape = //new Examples.Shapes.Plane(8, 8, 4.0f, 4.0f);
new Examples.Shapes.Cube();
Shapes.Shape shape = new Examples.Shapes.Cube();
#endregion
#region --- Constructors ---
public T10_GLSL_Cube() : base(new DisplayMode(800, 600), "OpenTK | GLSL Example 1")
public T10_GLSL_Cube()
: base(new DisplayMode(800, 600), T10_GLSL_Cube.Title)
{
}
#endregion
@ -67,69 +69,57 @@ namespace Examples.Tutorial
return;
}
GL.ClearColor(Color.MidnightBlue);
GL.ClearColor(Color.SteelBlue);
GL.Enable(EnableCap.DepthTest);
CreateVBO();
//CreateShader();
int status_code, status_text_length;
StringBuilder info = new StringBuilder();
vertex_shader_object = GL.CreateShader(Version20.VertexShader);
fragment_shader_object = GL.CreateShader(Version20.FragmentShader);
using (StreamReader sr = new StreamReader("Data/Shaders/Simple_VS.glsl"))
{
string[] code = new string[] { sr.ReadToEnd() };
#if MONO
unsafe { GL.ShaderSource(vertex_shader_object, vertex_shader_source.Length, vertex_shader_source, (int*)null); }
#else
GL.ShaderSource(vertex_shader_object, code.Length, code, (int[])null);
#endif
}
GL.CompileShader(vertex_shader_object);
GL.GetShader(vertex_shader_object, Version20.CompileStatus, out status_code);
GL.GetShader(vertex_shader_object, Version20.InfoLogLength, out status_text_length);
info.Remove(0, info.Length);
info.EnsureCapacity(status_text_length);
GL.GetShaderInfoLog(vertex_shader_object, info.Capacity, out status_text_length, info);
Trace.WriteLine(info.ToString());
if (status_code != 1)
throw new Exception(info.ToString());
using (StreamReader sr = new StreamReader("Data/Shaders/Simple_FS.glsl"))
{
string[] code = new string[] { sr.ReadToEnd() };
#if MONO
unsafe { GL.ShaderSource(fragment_shader_object, fragment_shader_source.Length, fragment_shader_source, (int*)null); }
#else
GL.ShaderSource(fragment_shader_object, code.Length, code, (int[])null);
#endif
}
GL.CompileShader(fragment_shader_object);
GL.GetShader(fragment_shader_object, Version20.CompileStatus, out status_code);
GL.GetShader(vertex_shader_object, Version20.InfoLogLength, out status_text_length);
info.Remove(0, info.Length);
info.EnsureCapacity(status_text_length);
GL.GetShaderInfoLog(fragment_shader_object, info.Capacity, out status_text_length, info);
Trace.WriteLine(info.ToString());
if (status_code != 1)
throw new Exception(info.ToString());
shader_program = GL.CreateProgram();
GL.AttachShader(shader_program, fragment_shader_object);
GL.AttachShader(shader_program, vertex_shader_object);
GL.LinkProgram(shader_program);
GL.UseProgram(shader_program);
using (StreamReader vs = new StreamReader("Data/Shaders/Simple_VS.glsl"))
using (StreamReader fs = new StreamReader("Data/Shaders/Simple_FS.glsl"))
CreateShaders(vs.ReadToEnd(), fs.ReadToEnd(),
out vertex_shader_object, out fragment_shader_object,
out shader_program);
}
private void CreateVBO()
void CreateShaders(string vs, string fs,
out int vertexObject, out int fragmentObject,
out int program)
{
int status_code;
string info;
vertexObject = GL.CreateShader(Version20.VertexShader);
fragmentObject = GL.CreateShader(Version20.FragmentShader);
// Compile vertex shader
GL.ShaderSource(vertexObject, vs);
GL.CompileShader(vertexObject);
GL.GetShaderInfoLog(vertexObject, out info);
GL.GetShader(vertexObject, Version20.CompileStatus, out status_code);
if (status_code != 1)
throw new ApplicationException(info);
// Compile vertex shader
GL.ShaderSource(fragmentObject, fs);
GL.CompileShader(fragmentObject);
GL.GetShaderInfoLog(fragmentObject, out info);
GL.GetShader(fragmentObject, Version20.CompileStatus, out status_code);
if (status_code != 1)
throw new ApplicationException(info);
program = GL.CreateProgram();
GL.AttachShader(program, fragmentObject);
GL.AttachShader(program, vertexObject);
GL.LinkProgram(program);
GL.UseProgram(program);
}
#region private void CreateVBO()
void CreateVBO()
{
int size;
@ -157,25 +147,21 @@ namespace Examples.Tutorial
GL.GetBufferParameter(Version15.ElementArrayBuffer, Version15.BufferSize, out size);
if (shape.Indices.Length * 4 != size)
throw new ApplicationException("Problem uploading index data to VBO");
}
#endregion
#endregion
#region OnUnload
public override void OnUnload(EventArgs e)
{
if (shader_program != 0)
GL.DeleteProgram(shader_program);
if (fragment_shader_object != 0)
GL.DeleteShader(fragment_shader_object);
if (vertex_shader_object != 0)
GL.DeleteShader(vertex_shader_object);
if (vertex_buffer_object != 0)
GL.DeleteBuffers(1, ref vertex_buffer_object);
if (element_buffer_object != 0)
GL.DeleteBuffers(1, ref element_buffer_object);
GL.DeleteProgram(shader_program);
GL.DeleteShader(fragment_shader_object);
GL.DeleteShader(vertex_shader_object);
GL.DeleteBuffers(1, ref vertex_buffer_object);
GL.DeleteBuffers(1, ref element_buffer_object);
}
#endregion
@ -269,7 +255,7 @@ namespace Examples.Tutorial
#endregion
#region IExample members
#region Example members
#region public void Launch()
@ -286,7 +272,8 @@ namespace Examples.Tutorial
#endregion
public static readonly int order = 10;
static readonly ExampleAttribute info = typeof(T10_GLSL_Cube).GetCustomAttributes(false)[0] as ExampleAttribute;
static readonly string Title = info.Title;
#endregion
}