mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-27 10:35:32 +00:00
272 lines
9.4 KiB
C#
272 lines
9.4 KiB
C#
// This code was written for the OpenTK library and has been released
|
|
// to the Public Domain.
|
|
// It is provided "as is" without express or implied warranty of any kind.
|
|
|
|
using System;
|
|
using System.Drawing;
|
|
using System.Collections.Generic;
|
|
using System.Diagnostics;
|
|
using System.Windows.Forms;
|
|
using System.IO;
|
|
using System.Text;
|
|
|
|
using OpenTK;
|
|
using OpenTK.Graphics;
|
|
using OpenTK.Graphics.OpenGL;
|
|
|
|
using Examples.Shapes;
|
|
using Examples.TextureLoaders;
|
|
|
|
namespace Examples.Tutorial
|
|
{
|
|
[Example("DDS Cube Map", ExampleCategory.OpenGL, "2.x", Documentation = "DDSCubeMap")]
|
|
public class T13_GLSL_Earth: GameWindow
|
|
{
|
|
public T13_GLSL_Earth( )
|
|
: base( 800, 800 )
|
|
{
|
|
}
|
|
|
|
#region internal Fields
|
|
|
|
// Shader
|
|
int VertexShaderObject, FragmentShaderObject, ProgramObject;
|
|
const string VertexShaderFilename = "Data/Shaders/CubeMap_VS.glsl";
|
|
const string FragmentShaderFilename = "Data/Shaders/CubeMap_FS.glsl";
|
|
|
|
// Textures
|
|
const TextureUnit TMU0_Unit = TextureUnit.Texture0;
|
|
const int TMU0_UnitInteger = 0;
|
|
const string TMU0_Filename = "Data/Textures/earth-cubemap.dds";
|
|
uint TMU0_Handle;
|
|
TextureTarget TMU0_Target;
|
|
|
|
// DL
|
|
DrawableShape sphere;
|
|
|
|
// Camera
|
|
Vector3 EyePos = new Vector3( 0.0f, 0.0f, 6.0f );
|
|
Vector3 Trackball = Vector3.Zero;
|
|
|
|
#endregion internal Fields
|
|
|
|
/// <summary>Setup OpenGL and load resources here.</summary>
|
|
/// <param name="e">Not used.</param>
|
|
protected override void OnLoad(EventArgs e)
|
|
{
|
|
this.VSync = VSyncMode.Off;
|
|
|
|
// Check for necessary capabilities:
|
|
string extensions = GL.GetString(StringName.Extensions);
|
|
if (!GL.GetString(StringName.Extensions).Contains("GL_ARB_shading_language"))
|
|
{
|
|
throw new NotSupportedException(String.Format("This example requires OpenGL 2.0. Found {0}. Aborting.",
|
|
GL.GetString(StringName.Version).Substring(0, 3)));
|
|
}
|
|
|
|
if (!extensions.Contains("GL_ARB_texture_compression") ||
|
|
!extensions.Contains("GL_EXT_texture_compression_s3tc"))
|
|
{
|
|
throw new NotSupportedException("This example requires support for texture compression. Aborting.");
|
|
}
|
|
|
|
#region GL State
|
|
|
|
GL.ClearColor( 0f, 0f, 0f, 0f );
|
|
|
|
GL.Disable( EnableCap.Dither );
|
|
|
|
GL.Enable( EnableCap.CullFace );
|
|
GL.FrontFace( FrontFaceDirection.Ccw );
|
|
GL.PolygonMode( MaterialFace.Front, PolygonMode.Fill );
|
|
// GL.PolygonMode( MaterialFace.Back, PolygonMode.Line );
|
|
|
|
#endregion GL State
|
|
|
|
#region Shaders
|
|
|
|
string LogInfo;
|
|
|
|
// Load&Compile Vertex Shader
|
|
|
|
using ( StreamReader sr = new StreamReader( VertexShaderFilename ) )
|
|
{
|
|
VertexShaderObject = GL.CreateShader( ShaderType.VertexShader );
|
|
GL.ShaderSource( VertexShaderObject, sr.ReadToEnd( ) );
|
|
GL.CompileShader( VertexShaderObject );
|
|
}
|
|
|
|
GL.GetShaderInfoLog( VertexShaderObject, out LogInfo );
|
|
if ( LogInfo.Length > 0 && !LogInfo.Contains( "hardware" ) )
|
|
Trace.WriteLine( "Vertex Shader failed!\nLog:\n" + LogInfo );
|
|
else
|
|
Trace.WriteLine( "Vertex Shader compiled without complaint." );
|
|
|
|
// Load&Compile Fragment Shader
|
|
|
|
using ( StreamReader sr = new StreamReader( FragmentShaderFilename ) )
|
|
{
|
|
FragmentShaderObject = GL.CreateShader( ShaderType.FragmentShader );
|
|
GL.ShaderSource( FragmentShaderObject, sr.ReadToEnd( ) );
|
|
GL.CompileShader( FragmentShaderObject );
|
|
}
|
|
GL.GetShaderInfoLog( FragmentShaderObject, out LogInfo );
|
|
|
|
if ( LogInfo.Length > 0 && !LogInfo.Contains( "hardware" ) )
|
|
Trace.WriteLine( "Fragment Shader failed!\nLog:\n" + LogInfo );
|
|
else
|
|
Trace.WriteLine( "Fragment Shader compiled without complaint." );
|
|
|
|
// Link the Shaders to a usable Program
|
|
ProgramObject = GL.CreateProgram( );
|
|
GL.AttachShader( ProgramObject, VertexShaderObject );
|
|
GL.AttachShader( ProgramObject, FragmentShaderObject );
|
|
|
|
// link it all together
|
|
GL.LinkProgram( ProgramObject );
|
|
|
|
// flag ShaderObjects for delete when not used anymore
|
|
GL.DeleteShader( VertexShaderObject );
|
|
GL.DeleteShader( FragmentShaderObject );
|
|
|
|
int[] temp = new int[1];
|
|
GL.GetProgram( ProgramObject, ProgramParameter.LinkStatus, out temp[0] );
|
|
Trace.WriteLine( "Linking Program (" + ProgramObject + ") " + ( ( temp[0] == 1 ) ? "succeeded." : "FAILED!" ) );
|
|
if ( temp[0] != 1 )
|
|
{
|
|
GL.GetProgramInfoLog( ProgramObject, out LogInfo );
|
|
Trace.WriteLine( "Program Log:\n" + LogInfo );
|
|
}
|
|
|
|
GL.GetProgram( ProgramObject, ProgramParameter.ActiveAttributes, out temp[0] );
|
|
Trace.WriteLine( "Program registered " + temp[0] + " Attributes. (Should be 4: Pos, UV, Normal, Tangent)" );
|
|
|
|
Trace.WriteLine( "Tangent attribute bind location: " + GL.GetAttribLocation( ProgramObject, "AttributeTangent" ) );
|
|
|
|
Trace.WriteLine( "End of Shader build. GL Error: " + GL.GetError( ) );
|
|
|
|
#endregion Shaders
|
|
|
|
#region Textures
|
|
|
|
TextureLoaderParameters.FlipImages = false;
|
|
TextureLoaderParameters.MagnificationFilter = TextureMagFilter.Linear;
|
|
TextureLoaderParameters.MinificationFilter = TextureMinFilter.Linear;
|
|
TextureLoaderParameters.WrapModeS = TextureWrapMode.ClampToEdge;
|
|
TextureLoaderParameters.WrapModeT = TextureWrapMode.ClampToEdge;
|
|
TextureLoaderParameters.EnvMode = TextureEnvMode.Modulate;
|
|
|
|
ImageDDS.LoadFromDisk( TMU0_Filename, out TMU0_Handle, out TMU0_Target );
|
|
Trace.WriteLine( "Loaded " + TMU0_Filename + " with handle " + TMU0_Handle + " as " + TMU0_Target );
|
|
|
|
#endregion Textures
|
|
|
|
Trace.WriteLine( "End of Texture Loading. GL Error: " + GL.GetError( ) );
|
|
Trace.WriteLine( "");
|
|
|
|
sphere = new SlicedSphere(1.5f, Vector3d.Zero, SlicedSphere.eSubdivisions.Four, new SlicedSphere.eDir[] { SlicedSphere.eDir.All }, true);
|
|
|
|
}
|
|
|
|
protected override void OnUnload(EventArgs e)
|
|
{
|
|
sphere.Dispose();
|
|
|
|
GL.DeleteProgram( ProgramObject );
|
|
GL.DeleteTextures( 1, ref TMU0_Handle );
|
|
|
|
base.OnUnload( e );
|
|
}
|
|
|
|
/// <summary>Respond to resize events here.</summary>
|
|
/// <param name="e">Contains information on the new GameWindow size.</param>
|
|
/// <remarks>There is no need to call the base implementation.</remarks>
|
|
protected override void OnResize( EventArgs e )
|
|
{
|
|
GL.Viewport( 0, 0, Width, Height );
|
|
|
|
GL.MatrixMode( MatrixMode.Projection );
|
|
Matrix4 p = Matrix4.CreatePerspectiveFieldOfView(MathHelper.PiOver4, Width / (float)Height, 0.1f, 10.0f);
|
|
GL.LoadMatrix(ref p);
|
|
|
|
GL.MatrixMode( MatrixMode.Modelview );
|
|
GL.LoadIdentity( );
|
|
|
|
base.OnResize( e );
|
|
}
|
|
|
|
/// <summary>Add your game logic here.</summary>
|
|
/// <param name="e">Contains timing information.</param>
|
|
/// <remarks>There is no need to call the base implementation.</remarks>
|
|
protected override void OnUpdateFrame( FrameEventArgs e )
|
|
{
|
|
base.OnUpdateFrame( e );
|
|
|
|
if ( Keyboard[OpenTK.Input.Key.Escape] )
|
|
this.Exit( );
|
|
if ( Keyboard[OpenTK.Input.Key.Space] )
|
|
Trace.WriteLine( "GL: " + GL.GetError( ) );
|
|
|
|
Trackball.X = Mouse.X;
|
|
Trackball.Y = Mouse.Y;
|
|
Trackball.Z = Mouse.Wheel * 0.5f;
|
|
|
|
}
|
|
|
|
/// <summary>Add your game rendering code here.</summary>
|
|
/// <param name="e">Contains timing information.</param>
|
|
/// <remarks>There is no need to call the base implementation.</remarks>
|
|
protected override void OnRenderFrame(FrameEventArgs e)
|
|
{
|
|
this.Title = "FPS: " + (1 / e.Time).ToString("0.");
|
|
|
|
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
|
|
|
|
GL.UseProgram(ProgramObject);
|
|
|
|
#region Textures
|
|
|
|
GL.ActiveTexture(TMU0_Unit);
|
|
GL.BindTexture(TMU0_Target, TMU0_Handle);
|
|
|
|
#endregion Textures
|
|
|
|
#region Uniforms
|
|
|
|
GL.Uniform1(GL.GetUniformLocation(ProgramObject, "Earth"), TMU0_UnitInteger);
|
|
|
|
#endregion Uniforms
|
|
|
|
GL.PushMatrix();
|
|
Matrix4 temp = Matrix4.LookAt(EyePos, Vector3.Zero, Vector3.UnitY);
|
|
GL.MultMatrix(ref temp);
|
|
|
|
GL.Rotate(Trackball.X, Vector3.UnitY);
|
|
GL.Rotate(Trackball.Y, Vector3.UnitX);
|
|
|
|
#region Draw
|
|
|
|
GL.Color3(1f, 1f, 1f);
|
|
|
|
sphere.Draw();
|
|
|
|
#endregion Draw
|
|
|
|
GL.PopMatrix();
|
|
|
|
this.SwapBuffers();
|
|
}
|
|
|
|
/// <summary>Entry point</summary>
|
|
[STAThread]
|
|
public static void Main( )
|
|
{
|
|
using ( T13_GLSL_Earth example = new T13_GLSL_Earth( ) )
|
|
{
|
|
Utilities.SetWindowTitle(example);
|
|
example.Run( 30.0, 0.0 );
|
|
}
|
|
}
|
|
}
|
|
}
|