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Added SupportsFunction methods. Corrected SupportsExtension methods. Added locking.

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This commit is contained in:
the_fiddler 2007-11-06 13:33:56 +00:00
parent 020a31bc81
commit b3258229bb
1 changed files with 137 additions and 34 deletions
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171
Source/OpenTK/OpenGL/GLHelper.cs
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@ -68,6 +68,9 @@ namespace OpenTK.OpenGL
/// </remarks>
public static partial class GL
{
static StringBuilder sb = new StringBuilder();
static object gl_lock = new object();
static GL()
{
assembly = Assembly.GetExecutingAssembly();//Assembly.Load("OpenTK.OpenGL");
@ -117,19 +120,18 @@ namespace OpenTK.OpenGL
public static bool SupportsExtension(string name)
{
if (rebuildExtensionList)
{
BuildExtensionList();
}
// Search the cache for the string. Note that the cache substitutes
// strings "1.0" to "2.1" with "GL_VERSION_1_0" to "GL_VERSION_2_1"
if (AvailableExtensions.ContainsKey(name))
lock (gl_lock)
{
//return AvailableExtensions[name];
return true;
sb.Remove(0, sb.Length);
if (!name.StartsWith("GL_"))
sb.Append("gl_");
sb.Append(name.ToLower());
// Search the cache for the string.
return AvailableExtensions.ContainsKey(sb.ToString());
}
return false;
}
#endregion
@ -153,53 +155,57 @@ namespace OpenTK.OpenGL
if (version.StartsWith("1.2"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
}
else if (version.StartsWith("1.3"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("VERSION_1_3", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
AvailableExtensions.Add("gl_version_1_3", true);
}
else if (version.StartsWith("1.4"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("VERSION_1_3", true);
AvailableExtensions.Add("VERSION_1_4", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
AvailableExtensions.Add("gl_version_1_3", true);
AvailableExtensions.Add("gl_version_1_4", true);
}
else if (version.StartsWith("1.5"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("VERSION_1_3", true);
AvailableExtensions.Add("VERSION_1_4", true);
AvailableExtensions.Add("VERSION_1_5", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
AvailableExtensions.Add("gl_version_1_3", true);
AvailableExtensions.Add("gl_version_1_4", true);
AvailableExtensions.Add("gl_version_1_5", true);
}
else if (version.StartsWith("2.0"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("VERSION_1_3", true);
AvailableExtensions.Add("VERSION_1_4", true);
AvailableExtensions.Add("VERSION_1_5", true);
AvailableExtensions.Add("VERSION_2_0", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
AvailableExtensions.Add("gl_version_1_3", true);
AvailableExtensions.Add("gl_version_1_4", true);
AvailableExtensions.Add("gl_version_1_5", true);
AvailableExtensions.Add("gl_version_2_0", true);
}
else if (version.StartsWith("2.1"))
{
AvailableExtensions.Add("VERSION_1_2", true);
AvailableExtensions.Add("VERSION_1_3", true);
AvailableExtensions.Add("VERSION_1_4", true);
AvailableExtensions.Add("VERSION_1_5", true);
AvailableExtensions.Add("VERSION_2_0", true);
AvailableExtensions.Add("VERSION_2_1", true);
AvailableExtensions.Add("gl_version_1_1", true);
AvailableExtensions.Add("gl_version_1_2", true);
AvailableExtensions.Add("gl_version_1_3", true);
AvailableExtensions.Add("gl_version_1_4", true);
AvailableExtensions.Add("gl_version_1_5", true);
AvailableExtensions.Add("gl_version_2_0", true);
AvailableExtensions.Add("gl_version_2_1", true);
}
string extension_string = GL.GetString(Enums.StringName.Extensions);
if (String.IsNullOrEmpty(extension_string))
return; // no extensions are available
string[] extensions = extension_string.Split(' ');
string[] extensions = extension_string.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string ext in extensions)
{
AvailableExtensions.Add(ext, true);
}
AvailableExtensions.Add(ext.ToLower(), true);
rebuildExtensionList = false;
}
@ -329,6 +335,103 @@ namespace OpenTK.OpenGL
#endregion
#region public static bool SupportsFunction(string function)
/// <summary>
/// Checks if a given OpenGL function is supported by the current context
/// </summary>
/// <param name="function">The name of the OpenGL function (i.e. glShaderSource)</param>
/// <returns>True if the function is supported, false otherwise</returns>
public static bool SupportsFunction(string function)
{
lock (gl_lock)
{
if (function == null)
throw new ArgumentNullException("function");
sb.Remove(0, sb.Length);
if (!function.StartsWith("gl"))
sb.Append("gl");
sb.Append(function);
FieldInfo f = delegatesClass.GetField(sb.ToString(), BindingFlags.Static | BindingFlags.NonPublic);
if (f == null)
return false;
return f.GetValue(null) != null;
}
}
#endregion
#region public static bool SupportsFunction(string function, string extension)
/// <summary>
/// Checks if a given OpenGL function is supported by the current context
/// </summary>
/// <param name="function">The name of the OpenGL function (e.g. glShaderSource)</param>
/// <param name="extension">The name of the extension catagory (e.g. ARB, EXT, ATI, ...)</param>
/// <returns>True if the function is supported, false otherwise</returns>
public static bool SupportsFunction(string function, string extension)
{
lock (gl_lock)
{
if (function == null)
throw new ArgumentNullException("function");
if (extension == null)
throw new ArgumentNullException("extension");
sb.Remove(0, sb.Length);
if (!function.StartsWith("gl"))
sb.Append("gl");
sb.Append(function);
if (!function.EndsWith(extension))
sb.Append(extension);
FieldInfo f = delegatesClass.GetField(sb.ToString(), BindingFlags.Static | BindingFlags.NonPublic);
if (f == null)
return false;
return f.GetValue(null) != null;
}
}
#endregion
#region public static bool SupportsFunction(Type function)
/// <summary>
/// Checks if a given OpenGL function is supported by the current context
/// </summary>
/// <param name="function">The name of the OpenGL function (e.g. glShaderSource)</param>
/// <param name="extension">The name of the extension catagory (e.g. ARB, EXT, ATI, ...)</param>
/// <returns>True if the function is supported, false otherwise</returns>
public static bool SupportsFunction(MethodInfo method)
{
lock (gl_lock)
{
/*
if (function == null)
throw new ArgumentNullException("function");
sb.Remove(0, sb.Length);
if (!function.Name.StartsWith("gl"))
sb.Append("gl");
sb.Append(function);
//if (!function.EndsWith(extension))
// sb.Append(extension);
FieldInfo f = delegatesClass.GetField(sb.ToString(), BindingFlags.Static | BindingFlags.NonPublic);
if (f == null)
return false;
return f.GetValue(null) != null;
*/
return false;
}
}
#endregion
#region --- GetProcAddress ---
private static IGetProcAddress getProcAddress;