You should template on VertexPositionColor, not on VertexPositionColor[]. The reason for the error message is that you're saying T is VertexPositionColor[]. An array is a reference type, while the template constraint specifies a value type. On Tue, Feb 2, 2010 at 7:51 AM, Richard Steventon <steven...@gmail.com>wrote:
> Okay, so problem #2.... calling the correct version of the interface > (I think this is the problem?), since I am getting a "violates the > constraint of type 'T'" error. > > I set up a XNA VertexBuffer using: > l = Array.CreateInstance(VertexPositionColor,6) > ..... > self.vertices = l > > Then: > self.VertexBuffer = VertexBuffer(self.graphics.GraphicsDevice, \ > len(self.vertices) * VertexPositionColor.SizeInBytes, \ > BufferUsage.WriteOnly) > self.VertexBuffer.SetData[Array[VertexPositionColor]](self.vertices) > > And I get: > ValueError: GenericArguments[0], > 'Microsoft.Xna.Framework.Graphics.VertexPositionColor[]', on 'Void > SetData[T](Int32, T[], Int32, Int32, Int32)' violates the constraint > of type 'T'. > > The documentation for the VertexBuffer.SetData method can be found here: > > http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.graphics.vertexbuffer.setdata.aspx > > The methods are: > VertexBuffer.SetData (Int32, T[], Int32, Int32, Int32) > VertexBuffer.SetData (T[]) > VertexBuffer.SetData (T[], Int32, Int32) > > This works fine in C# with a List of VertexPositionColor objects, so I > assume that Array in IronPython is the equivalent ? So why does it > not work ? > _______________________________________________ > Users mailing list > Users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com >
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