diff --git a/Source/Utilities/Graphics/ITextPrinter.cs b/Source/Utilities/Graphics/ITextPrinter.cs
index 4f72e74a..e5cb68dc 100644
--- a/Source/Utilities/Graphics/ITextPrinter.cs
+++ b/Source/Utilities/Graphics/ITextPrinter.cs
@@ -128,14 +128,26 @@ namespace OpenTK.Graphics
#endregion
- #region Obsolete
+ #region Begin
- [Obsolete]
+ ///
+ /// Sets up a resolution-dependent orthographic projection.
+ ///
void Begin();
- [Obsolete]
+ #endregion
+
+ ///
+ /// Restores the projection and modelview matrices to their previous state.
+ ///
+ #region End
+
void End();
+ #endregion
+
+ #region Obsolete
+
[Obsolete("Use TextPrinter.Print instead")]
void Draw(TextHandle handle);
diff --git a/Source/Utilities/Graphics/Text/GL1TextOutputProvider.cs b/Source/Utilities/Graphics/Text/GL1TextOutputProvider.cs
index c93177a2..6731f35e 100644
--- a/Source/Utilities/Graphics/Text/GL1TextOutputProvider.cs
+++ b/Source/Utilities/Graphics/Text/GL1TextOutputProvider.cs
@@ -40,6 +40,12 @@ namespace OpenTK.Graphics.Text
Dictionary> active_lists = new Dictionary>();
Queue> inactive_lists = new Queue>();
+ #pragma warning disable 0649
+
+ struct Viewport { public float Left, Top, Right, Bottom; }
+
+ #pragma warning restore 0649
+
bool disposed;
#endregion
@@ -164,6 +170,62 @@ namespace OpenTK.Graphics.Text
#endregion
+ #region Begin
+
+ public void Begin()
+ {
+ if (disposed)
+ throw new ObjectDisposedException(this.GetType().ToString());
+
+ GraphicsContext.Assert();
+
+ int current_matrix;
+ GL.GetInteger(GetPName.MatrixMode, out current_matrix);
+
+ Viewport viewport = new Viewport();
+ GL.GetFloat(GetPName.Viewport, out viewport.Left);
+
+ // Prepare to draw text. We want pixel perfect precision, so we setup a 2D mode,
+ // with size equal to the window (in pixels).
+ // While we could also render text in 3D mode, it would be very hard to get
+ // pixel-perfect precision.
+ GL.MatrixMode(MatrixMode.Projection);
+ GL.PushMatrix();
+ GL.LoadIdentity();
+ GL.Ortho(viewport.Left, viewport.Right, viewport.Bottom, viewport.Top, -1.0, 1.0);
+
+ GL.MatrixMode(MatrixMode.Modelview);
+ GL.PushMatrix();
+ GL.LoadIdentity();
+
+ GL.MatrixMode((MatrixMode)current_matrix);
+ }
+
+ #endregion
+
+ #region End
+
+ public void End()
+ {
+ if (disposed)
+ throw new ObjectDisposedException(this.GetType().ToString());
+
+ GraphicsContext.Assert();
+
+ int current_matrix;
+ GL.GetInteger(GetPName.MatrixMode, out current_matrix);
+
+ GL.MatrixMode(MatrixMode.Modelview);
+ GL.PopMatrix();
+
+ GL.MatrixMode(MatrixMode.Projection);
+ GL.PopMatrix();
+
+ GL.MatrixMode((MatrixMode)current_matrix);
+ }
+
+ #endregion
+
#endregion
#region Protected Members
diff --git a/Source/Utilities/Graphics/Text/ITextOutputProvider.cs b/Source/Utilities/Graphics/Text/ITextOutputProvider.cs
index ce1aaf93..826dc890 100644
--- a/Source/Utilities/Graphics/Text/ITextOutputProvider.cs
+++ b/Source/Utilities/Graphics/Text/ITextOutputProvider.cs
@@ -36,5 +36,7 @@ namespace OpenTK.Graphics.Text
{
void Print(TextBlock block, Color color, IGlyphRasterizer rasterizer);
void Clear();
+ void Begin();
+ void End();
}
}
diff --git a/Source/Utilities/Graphics/TextPrinter.cs b/Source/Utilities/Graphics/TextPrinter.cs
index a96757d0..defb3c02 100644
--- a/Source/Utilities/Graphics/TextPrinter.cs
+++ b/Source/Utilities/Graphics/TextPrinter.cs
@@ -214,7 +214,7 @@ namespace OpenTK.Graphics
#endregion
- #region Clear()
+ #region Clear
public void Clear()
{
@@ -227,55 +227,32 @@ namespace OpenTK.Graphics
#endregion
- #region Obsolete
+ #region Begin
///
- /// Sets up OpenGL state for drawing text.
+ /// Sets up a resolution-dependent orthographic projection.
///
- [Obsolete]
public void Begin()
{
- if (disposed)
- throw new ObjectDisposedException(this.GetType().ToString());
-
- GraphicsContext.Assert();
-
- float[] viewport = new float[4];
-
- GL.GetFloat(GetPName.Viewport, viewport);
-
- // Prepare to draw text. We want pixel perfect precision, so we setup a 2D mode,
- // with size equal to the window (in pixels).
- // While we could also render text in 3D mode, it would be very hard to get
- // pixel-perfect precision.
- GL.MatrixMode(MatrixMode.Projection);
- GL.PushMatrix();
- GL.LoadIdentity();
- GL.Ortho(viewport[0], viewport[2], viewport[3], viewport[1], -1.0, 1.0);
-
- GL.MatrixMode(MatrixMode.Modelview);
- GL.PushMatrix();
- GL.LoadIdentity();
+ TextOutput.Begin();
}
+ #endregion
+
+ #region Begin
+
///
- /// Restores OpenGL state.
+ /// Restores the projection and modelview matrices to their previous state.
///
- [Obsolete]
public void End()
{
- if (disposed)
- throw new ObjectDisposedException(this.GetType().ToString());
-
- GraphicsContext.Assert();
-
- GL.MatrixMode(MatrixMode.Modelview);
- GL.PopMatrix();
-
- GL.MatrixMode(MatrixMode.Projection);
- GL.PopMatrix();
+ TextOutput.End();
}
+ #endregion
+
+ #region Obsolete
+
[Obsolete("Use TextPrinter.Print instead")]
public void Draw(TextHandle handle)
{