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Deprecate TextPrinter.Begin()/End(). These are only left for backwards compatibility. New code should set the desired projection and modelview matrices manually.

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This commit is contained in:
the_fiddler 2009-02-12 01:01:55 +00:00
parent 5135a25828
commit 1502fc27b7
2 changed files with 32 additions and 19 deletions
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47
Source/Utilities/Graphics/Text/GL1TextOutputProvider.cs
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@ -28,6 +28,7 @@
using System.Collections.Generic;
using System.Drawing;
using OpenTK.Math;
using System;
namespace OpenTK.Graphics.Text
{
@ -39,6 +40,7 @@ namespace OpenTK.Graphics.Text
Dictionary<Texture2D, List<Vector2>> active_lists = new Dictionary<Texture2D, List<Vector2>>();
Queue<List<Vector2>> inactive_lists = new Queue<List<Vector2>>();
float[] viewport = new float[4];
bool legacy_mode = false;
#endregion
@ -57,6 +59,19 @@ namespace OpenTK.Graphics.Text
public void Print(TextBlock block, PointF location, Color color, IGlyphRasterizer rasterizer, GlyphCache cache)
{
GL.PushAttrib(AttribMask.TextureBit | AttribMask.EnableBit | AttribMask.ColorBufferBit | AttribMask.DepthBufferBit);
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.ConstantColorExt, BlendingFactorDest.OneMinusSrcColor); // For subpixel with color
GL.Disable(EnableCap.DepthTest);
//GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
//GL.Enable(EnableCap.ColorMaterial);
//GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha); // For grayscale
//GL.BlendFunc(BlendingFactorSrc.One, BlendingFactorDest.OneMinusSrcColor); // For subpixel
using (TextExtents extents = rasterizer.MeasureText(block, location))
{
// Build layout
@ -109,6 +124,11 @@ namespace OpenTK.Graphics.Text
key.Bind();
GL.Translate(location.X, location.Y, 0);
if (!legacy_mode)
{
GL.Scale(2.0 / (viewport[2] - viewport[0]), -2.0 / (viewport[3] - viewport[1]), 1);
}
GL.BlendColor(color);
GL.Begin(BeginMode.Triangles);
@ -129,16 +149,20 @@ namespace OpenTK.Graphics.Text
}
active_lists.Clear();
GL.PopAttrib();
}
#endregion
#region Begin
[Obsolete]
public void Begin()
{
if (GraphicsContext.CurrentContext == null)
throw new GraphicsContextException("No GraphicsContext is current in the calling thread.");
GraphicsContext.Assert();
legacy_mode = true;
GL.GetFloat(GetPName.Viewport, viewport);
@ -154,29 +178,18 @@ namespace OpenTK.Graphics.Text
GL.MatrixMode(MatrixMode.Modelview);
GL.PushMatrix();
GL.LoadIdentity();
GL.PushAttrib(AttribMask.TextureBit | AttribMask.EnableBit | AttribMask.ColorBufferBit);
//GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
//GL.Enable(EnableCap.ColorMaterial);
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.Blend);
//GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha); // For grayscale
GL.BlendFunc(BlendingFactorSrc.One, BlendingFactorDest.OneMinusSrcColor); // For subpixel
//GL.BlendFunc(BlendingFactorSrc.ConstantColorExt, BlendingFactorDest.OneMinusSrcColor); // For subpixel with color
GL.Disable(EnableCap.DepthTest);
}
#endregion
#region End
[Obsolete]
public void End()
{
GL.PopAttrib();
GraphicsContext.Assert();
legacy_mode = false;
GL.MatrixMode(MatrixMode.Modelview);
GL.PopMatrix();

4
Source/Utilities/Graphics/TextPrinter.cs
View file

@ -109,9 +109,9 @@ namespace OpenTK.Graphics
if (font == null)
throw new ArgumentNullException("font");
text_output.Begin();
//text_output.Begin();
text_output.Print(new TextBlock(text, font, options, layoutRectangle.Size), layoutRectangle.Location, color, glyph_rasterizer, glyph_cache);
text_output.End();
//text_output.End();
}
#endregion