Re: [Boost-users] uBLAS compatible to OpenGL?

From: Jonathan Brandmeyer (jbrandmeyer_at_[hidden])
Date: 2005-04-13 13:46:11

On Wed, 2005-04-13 at 19:47 +0200, Malte Clasen wrote:
> Hi,
> 
> is the uBLAS library memory compatible to OpenGL vector and matrix 
> operations? I'd like to use a single representation for both internal 
> maths and the rendering interface of my application. OpenGL expects a 
> pointer to a float or double C-array. For example 4x4 matrices are 
> stored linearly as 16 values.

OpenGL expects column-major ordering for 4x4 matrices, whereas uBLAS is
row-major by default.  Try something like 
typedef ublas::matrix<double, ublas::column_major,
ublas::bounded_array<double, 16> > gl_matrix;

HTH,
-Jonathan