mabye time I add a readme I guess

LICENSE

+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+

README.md

+# FNAGLSL
+
+Trying to hackily shoehorn GLSL shaders into FNA, trying to comply with the
+`Effect` API as much as possible. (Which isn't always working.)
+
+## Does it work?
+
+Kinda. Static shaders work. Passing vertex data is very hacky and brittle.
+Uniforms, samples/textures, ... don't work at all yet. Using regular shaders
+interleaved w/ GLSL shader draw calls seems to work ok.
+
+## How does this work?
+
+No. Don't.
+
+## How can I use it?
+
+```cs
+var glsl = new GLSLEffect(GraphicsDevice, new Dictionary<GLSLPurpose, string>()
+{
+	{ GLSLPurpose.  VertexShader, "vertex shader here"   },
+	{ GLSLPurpose.FragmentShader, "fragment shader here" },
+});
+
+// ...
+
+using (var bound = glsl.Bind())
+{
+	GraphicsDevice.DrawPrimitives(/*...*/);
+}
+```
+
+## License
+
+```
+Copyright (C) 2020 PoroCYon <porocyon@titandemo.org>
+This work is free. You can redistribute it and/or modify it under the
+terms of the Do What The Fuck You Want To Public License, Version 2,
+as published by Sam Hocevar. See the LICENSE file for more details.
+```
+

src/GLSLEffect.cs

@@ -106,7 +106,8 @@ namespace PoroCYon.FNAGLSL {
 						var msg = new sbyte[len];
 						fixed (sbyte* buf = msg) {
 							GL.GetShaderInfoLog(sh, len, null, buf);
-							throw new GLSLCompileException(new String(buf, 0, len-1));
+							throw new GLSLCompileException("Failed to compile "
+									+ kvp.Key + ": " + new String(buf, 0, len-1));
 						}
 					}
 
@@ -122,7 +123,8 @@ namespace PoroCYon.FNAGLSL {
 					var msg = new sbyte[len];
 					fixed (sbyte* buf = msg) {
 						GL.GetProgramInfoLog(prgm, len, null, buf);
-						throw new GLSLLinkException(new String(buf, 0, len-1));
+						throw new GLSLLinkException("Failed to link shader: "
+								+ new String(buf, 0, len-1));
 					}
 				}