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| Rev | Author | Line No. | Line |
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| 1452 | chris | 1 | #region License |
| 2 | // |
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| 3 | // The Open Toolkit Library License |
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| 4 | // |
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| 5 | // Copyright (c) 2006 - 2009 the Open Toolkit library. |
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| 6 | // |
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| 7 | // Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 8 | // of this software and associated documentation files (the "Software"), to deal |
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| 9 | // in the Software without restriction, including without limitation the rights to |
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| 10 | // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
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| 11 | // the Software, and to permit persons to whom the Software is furnished to do |
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| 12 | // so, subject to the following conditions: |
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| 13 | // |
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| 14 | // The above copyright notice and this permission notice shall be included in all |
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| 15 | // copies or substantial portions of the Software. |
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| 16 | // |
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| 17 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 18 | // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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| 19 | // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 20 | // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 21 | // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 22 | // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 23 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 24 | // OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | // |
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| 26 | #endregion |
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| 27 | |||
| 28 | using System; |
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| 29 | using System.Collections.Generic; |
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| 30 | using System.Text; |
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| 31 | using System.Diagnostics; |
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| 32 | |||
| 33 | namespace OpenTK.Graphics |
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| 34 | { |
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| 35 | // Used in debug-mode only, for automatic OpenGL error-checking. |
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| 36 | // |
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| 37 | // Works like this: an instance is created before each OpenGL function is called. |
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| 38 | // The constructor resets the OpenGL error state. Once the native function returns, |
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| 39 | // the error state is checked again, raising the relevant exceptions. |
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| 40 | // |
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| 41 | // A using-region is used to ensure Dispose() is called. |
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| 42 | // |
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| 43 | // Make sure that no error checking is added to the GetError function, |
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| 44 | // as that would cause infinite recursion! |
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| 45 | [Obsolete] |
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| 46 | struct ErrorHelper : IDisposable |
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| 47 | { |
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| 48 | #region Fields |
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| 49 | |||
| 50 | static readonly object SyncRoot = new object(); |
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| 51 | static readonly Dictionary<GraphicsContext, List<ErrorCode>> ContextErrors = |
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| 52 | new Dictionary<GraphicsContext, List<ErrorCode>>(); |
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| 53 | readonly GraphicsContext Context; |
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| 54 | |||
| 55 | #endregion |
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| 56 | |||
| 57 | #region Constructors |
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| 58 | |||
| 59 | public ErrorHelper(IGraphicsContext context) |
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| 60 | { |
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| 61 | if (context == null) |
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| 62 | throw new GraphicsContextMissingException(); |
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| 63 | |||
| 64 | Context = (GraphicsContext)context; |
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| 65 | lock (SyncRoot) |
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| 66 | { |
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| 67 | if (!ContextErrors.ContainsKey(Context)) |
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| 68 | ContextErrors.Add(Context, new List<ErrorCode>()); |
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| 69 | } |
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| 70 | ResetErrors(); |
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| 71 | } |
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| 72 | |||
| 73 | #endregion |
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| 74 | |||
| 75 | #region Public Members |
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| 76 | |||
| 77 | // Retrieve all OpenGL errors to clear the error list. |
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| 78 | // See http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/geterror.html |
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| 79 | [Conditional("DEBUG")] |
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| 80 | internal void ResetErrors() |
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| 81 | { |
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| 82 | if (Context.ErrorChecking) |
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| 83 | { |
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| 84 | while (GL.GetError() != ErrorCode.NoError) |
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| 85 | { } |
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| 86 | } |
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| 87 | } |
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| 88 | |||
| 89 | // Retrieve all OpenGL errors and throw an exception if anything other than NoError is returned. |
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| 90 | [Conditional("DEBUG")] |
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| 91 | internal void CheckErrors() |
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| 92 | { |
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| 93 | if (Context.ErrorChecking) |
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| 94 | { |
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| 95 | List<ErrorCode> error_list = ContextErrors[Context]; |
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| 96 | error_list.Clear(); |
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| 97 | ErrorCode error; |
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| 98 | do |
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| 99 | { |
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| 100 | error = GL.GetError(); |
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| 101 | error_list.Add(error); |
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| 102 | } while (error != ErrorCode.NoError); |
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| 103 | |||
| 104 | if (error_list.Count != 1) |
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| 105 | { |
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| 106 | StringBuilder sb = new StringBuilder(); |
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| 107 | foreach (ErrorCode e in error_list) |
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| 108 | { |
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| 109 | if (e != ErrorCode.NoError) |
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| 110 | { |
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| 111 | sb.Append(e.ToString()); |
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| 112 | sb.Append(", "); |
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| 113 | } |
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| 114 | else |
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| 115 | break; |
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| 116 | } |
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| 117 | sb.Remove(sb.Length - 2, 2); // Remove the last comma |
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| 118 | |||
| 119 | throw new GraphicsErrorException(sb.ToString()); |
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| 120 | } |
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| 121 | } |
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| 122 | } |
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| 123 | |||
| 124 | #endregion |
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| 125 | |||
| 126 | #region IDisposable Members |
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| 127 | |||
| 128 | public void Dispose() |
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| 129 | { |
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| 130 | CheckErrors(); |
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| 131 | } |
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| 132 | |||
| 133 | #endregion |
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| 134 | } |
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| 135 | } |