Files
OpenRA/OpenRA.Renderer.Gl/GraphicsDevice.cs
2011-08-09 08:51:36 +12:00

132 lines
3.3 KiB
C#
Executable File

#region Copyright & License Information
/*
* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation. For more information,
* see COPYING.
*/
#endregion
using System;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using OpenRA.FileFormats.Graphics;
using OpenRA.Renderer.SdlCommon;
using Tao.OpenGl;
using Tao.Sdl;
[assembly: Renderer(typeof(OpenRA.Renderer.Glsl.DeviceFactory))]
namespace OpenRA.Renderer.Glsl
{
public class DeviceFactory : IDeviceFactory
{
public IGraphicsDevice Create(Size size, WindowMode windowMode)
{
return new GraphicsDevice( size, windowMode );
}
}
public class GraphicsDevice : IGraphicsDevice
{
Size windowSize;
IntPtr surf;
SdlInput input;
public Size WindowSize { get { return windowSize; } }
public GraphicsDevice( Size size, WindowMode window )
{
Console.WriteLine("Using Gl renderer");
windowSize = size;
var extensions = new string[]
{
"GL_ARB_vertex_shader",
"GL_ARB_fragment_shader",
"GL_ARB_vertex_buffer_object",
};
surf = SdlGraphics.InitializeSdlGl( ref windowSize, window, extensions );
Gl.glEnableClientState( Gl.GL_VERTEX_ARRAY );
ErrorHandler.CheckGlError();
Gl.glEnableClientState( Gl.GL_TEXTURE_COORD_ARRAY );
ErrorHandler.CheckGlError();
Sdl.SDL_SetModState( 0 );
input = new SdlInput( surf );
}
public void EnableScissor( int left, int top, int width, int height )
{
if( width < 0 ) width = 0;
if( height < 0 ) height = 0;
Gl.glScissor( left, windowSize.Height - ( top + height ), width, height );
ErrorHandler.CheckGlError();
Gl.glEnable( Gl.GL_SCISSOR_TEST );
ErrorHandler.CheckGlError();
}
public void DisableScissor()
{
Gl.glDisable( Gl.GL_SCISSOR_TEST );
ErrorHandler.CheckGlError();
}
public void Clear()
{
Gl.glClearColor( 0, 0, 0, 0 );
ErrorHandler.CheckGlError();
Gl.glClear( Gl.GL_COLOR_BUFFER_BIT );
ErrorHandler.CheckGlError();
}
public void Present()
{
Sdl.SDL_GL_SwapBuffers();
}
public void PumpInput( IInputHandler inputHandler )
{
input.PumpInput(inputHandler);
}
public void DrawPrimitives( PrimitiveType pt, int firstVertex, int numVertices )
{
Gl.glDrawArrays( ModeFromPrimitiveType( pt ), firstVertex, numVertices );
ErrorHandler.CheckGlError();
}
static int ModeFromPrimitiveType( PrimitiveType pt )
{
switch( pt )
{
case PrimitiveType.PointList: return Gl.GL_POINTS;
case PrimitiveType.LineList: return Gl.GL_LINES;
case PrimitiveType.TriangleList: return Gl.GL_TRIANGLES;
case PrimitiveType.QuadList: return Gl.GL_QUADS;
}
throw new NotImplementedException();
}
public void SetLineWidth( float width )
{
Gl.glLineWidth(width);
ErrorHandler.CheckGlError();
}
public IVertexBuffer<Vertex> CreateVertexBuffer( int size ) { return new VertexBuffer<Vertex>( size ); }
public ITexture CreateTexture() { return new Texture(); }
public ITexture CreateTexture( Bitmap bitmap ) { return new Texture( bitmap ); }
public IShader CreateShader( string name ) { return new Shader( this, name ); }
public int GpuMemoryUsed { get; internal set; }
}
}