Add OpenGL error handling, resource tracking, and comprehensive documentation

CADability/CADability.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PackageId>CADability</PackageId>
-    <Version>1.0.22</Version>
+    <Version>1.0.25</Version>
     <!-- Update this for each publish -->
     <Authors>FriendsOfCADability</Authors>
     <Description>CAD functionality for .NET</Description>

CADability/GLConstants.cs

@@ -0,0 +1,89 @@
+using System;
+
+namespace CADability
+{
+	/// <summary>
+	/// OpenGL shader types
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLShaderType
+	{
+		public const uint VertexShader = 0x8B31;
+		public const uint FragmentShader = 0x8B30;
+	}
+
+	/// <summary>
+	/// OpenGL shader parameters for glGetShaderiv
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLShaderParameter
+	{
+		public const int CompileStatus = 0x8B81;
+		public const int InfoLogLength = 0x8B84;
+	}
+
+	/// <summary>
+	/// OpenGL program parameters for glGetProgramiv
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLProgramParameter
+	{
+		public const int LinkStatus = 0x8B82;
+		public const int InfoLogLength = 0x8B84;
+	}
+
+	/// <summary>
+	/// OpenGL state query parameters for glGetIntegerv
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLGetParameter
+	{
+		public const int CurrentProgram = 0x8B8D;
+	}
+
+	/// <summary>
+	/// OpenGL buffer targets
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLBufferTarget
+	{
+		public const uint ArrayBuffer = 0x8892;
+		public const uint ElementArrayBuffer = 0x8893;
+		public const uint CopyReadBuffer = 0x8F36;
+		public const uint CopyWriteBuffer = 0x8F37;
+	}
+
+	/// <summary>
+	/// OpenGL buffer usage hints
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLBufferUsage
+	{
+		public const uint StaticDraw = 0x88E4;
+		public const uint DynamicDraw = 0x88E8;
+		public const uint StreamDraw = 0x88E0;
+	}
+
+	/// <summary>
+	/// OpenGL primitive types for drawing
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLPrimitiveType
+	{
+		public const uint Triangles = 0x0004;
+		public const uint TriangleStrip = 0x0005;
+		public const uint TriangleFan = 0x0006;
+	}
+
+	/// <summary>
+	/// OpenGL data types
+	/// </summary>
+	[CLSCompliant(false)]
+	public static class GLDataType
+	{
+		public const uint Float = 0x1406;
+		public const uint UnsignedInt = 0x1405;
+		public const uint UnsignedShort = 0x1403;
+		public const uint Byte = 0x1400;
+	}
+}