epic/OpenRA
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

inverting the Engine <-> GL project dependency.

Browse Source
This commit is contained in:
Bob
2010-02-17 19:52:54 +13:00
parent 680f2a1bc7
commit e6120238c7
12 changed files with 214 additions and 111 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
OpenRa.Gl/GraphicsDevice.cs
View File

@@ -27,10 +27,13 @@ using System.Windows.Forms;
using Tao.Cg;
using Tao.OpenGl;
using Tao.Platform.Windows;
using OpenRa.FileFormats.Graphics;
[assembly: Renderer( typeof( OpenRa.GlRenderer.GraphicsDevice ))]
namespace OpenRa.GlRenderer
{
public class GraphicsDevice
public class GraphicsDevice : IGraphicsDevice
{
Size windowSize;
Graphics g;
@@ -39,7 +42,7 @@ namespace OpenRa.GlRenderer
internal IntPtr cgContext;
internal int vertexProfile, fragmentProfile;
public static void CheckGlError()
internal static void CheckGlError()
{
var n = Gl.glGetError();
if (n != Gl.GL_NO_ERROR)
@@ -125,17 +128,28 @@ namespace OpenRa.GlRenderer
CheckGlError();
}
public void DrawIndexedPrimitives(PrimitiveType pt, Range<int> vertices, Range<int> indices)
{
Gl.glDrawElements( (int)pt, indices.End - indices.Start, Gl.GL_UNSIGNED_SHORT, new IntPtr( indices.Start * 2 ) );
CheckGlError();
}
public void DrawIndexedPrimitives(PrimitiveType pt, int numVerts, int numPrimitives)
{
Gl.glDrawElements((int)pt, numPrimitives * IndicesPerPrimitive( pt ), Gl.GL_UNSIGNED_SHORT, IntPtr.Zero);
CheckGlError();
}
public void DrawIndexedPrimitives( PrimitiveType pt, Range<int> vertices, Range<int> indices )
{
Gl.glDrawElements( ModeFromPrimitiveType( pt ), indices.End - indices.Start, Gl.GL_UNSIGNED_SHORT, new IntPtr( indices.Start * 2 ) );
CheckGlError();
}
public void DrawIndexedPrimitives( PrimitiveType pt, int numVerts, int numPrimitives )
{
Gl.glDrawElements( ModeFromPrimitiveType( pt ), numPrimitives * IndicesPerPrimitive( pt ), Gl.GL_UNSIGNED_SHORT, IntPtr.Zero );
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;
}
throw new NotImplementedException();
}
static int IndicesPerPrimitive( PrimitiveType pt )
{
@@ -147,19 +161,39 @@ namespace OpenRa.GlRenderer
}
throw new NotImplementedException();
}
}
public struct Range<T>
{
public readonly T Start, End;
public Range(T start, T end) { Start = start; End = end; }
}
#region IGraphicsDevice Members
public class VertexBuffer<T> where T : struct
public IVertexBuffer<T> CreateVertexBuffer<T>( int size )
where T : struct
{
return new VertexBuffer<T>( this, size );
}
public IIndexBuffer CreateIndexBuffer( int size )
{
return new IndexBuffer( this, size );
}
public ITexture CreateTexture( Bitmap bitmap )
{
return new Texture( this, bitmap );
}
public IShader CreateShader( Stream stream )
{
return new Shader( this, stream );
}
#endregion
}
public class VertexBuffer<T> : IVertexBuffer<T>, IDisposable
where T : struct
{
int buffer;
public VertexBuffer(GraphicsDevice dev, int size, VertexFormat fmt)
public VertexBuffer(GraphicsDevice dev, int size)
{
Gl.glGenBuffers(1, out buffer);
GraphicsDevice.CheckGlError();
@@ -196,7 +230,7 @@ namespace OpenRa.GlRenderer
//~VertexBuffer() { Dispose(); }
}
public class IndexBuffer : IDisposable
public class IndexBuffer : IIndexBuffer, IDisposable
{
int buffer;
@@ -233,11 +267,10 @@ namespace OpenRa.GlRenderer
//~IndexBuffer() { Dispose(); }
}
public class Shader
public class Shader : IShader
{
IntPtr effect;
IntPtr highTechnique;
IntPtr lowTechnique;
IntPtr technique;
GraphicsDevice dev;
public Shader(GraphicsDevice dev, Stream s)
@@ -256,31 +289,22 @@ namespace OpenRa.GlRenderer
string.Format("Cg compile failed ({0}):\n{1}", err, results));
}
lowTechnique = Cg.cgGetNamedTechnique(effect, "low_quality");
highTechnique = Cg.cgGetNamedTechnique(effect, "high_quality");
if (lowTechnique != IntPtr.Zero && 0 == Cg.cgValidateTechnique(lowTechnique))
lowTechnique = IntPtr.Zero;
if (highTechnique != IntPtr.Zero && 0 == Cg.cgValidateTechnique(highTechnique))
highTechnique = IntPtr.Zero;
if (highTechnique == IntPtr.Zero && lowTechnique == IntPtr.Zero)
throw new InvalidOperationException("No valid techniques");
if( highTechnique == IntPtr.Zero )
highTechnique = lowTechnique;
if( lowTechnique == IntPtr.Zero )
lowTechnique = highTechnique;
technique = Cg.cgGetFirstTechnique( effect );
if( technique == IntPtr.Zero )
throw new InvalidOperationException("No techniques");
while( Cg.cgValidateTechnique( technique ) == 0 )
{
technique = Cg.cgGetNextTechnique( technique );
if( technique == IntPtr.Zero )
throw new InvalidOperationException("No valid techniques");
}
}
public ShaderQuality Quality { get; set; }
public void Render(Action a)
{
CgGl.cgGLEnableProfile(dev.vertexProfile);
CgGl.cgGLEnableProfile(dev.fragmentProfile);
var technique = Quality == ShaderQuality.High ? highTechnique : lowTechnique;
var pass = Cg.cgGetFirstPass(technique);
while (pass != IntPtr.Zero)
{
@@ -294,8 +318,9 @@ namespace OpenRa.GlRenderer
CgGl.cgGLDisableProfile(dev.vertexProfile);
}
public void SetValue(string name, Texture texture)
public void SetValue(string name, ITexture t)
{
var texture = (Texture)t;
var param = Cg.cgGetNamedEffectParameter( effect, name );
if( param != IntPtr.Zero && texture != null )
CgGl.cgGLSetupSampler( param, texture.texture );
@@ -311,7 +336,7 @@ namespace OpenRa.GlRenderer
public void Commit() { }
}
public class Texture
public class Texture : ITexture
{
internal int texture;
@@ -343,15 +368,4 @@ namespace OpenRa.GlRenderer
bitmap.UnlockBits(bits);
}
}
[Flags]
public enum VertexFormat { Position, Texture2 }
public enum ShaderQuality { Low, High }
public enum PrimitiveType
{
PointList = Gl.GL_POINTS,
LineList = Gl.GL_LINES,
TriangleList = Gl.GL_TRIANGLES
}
}