7 Replies Latest reply on May 4, 2011 3:36 PM by nou

    clCreateFromGLBuffer from OpenGL array buffer

    jstier
      error when creating a clBuffer from an GL_ARRAY_BUFFER

      Hi,

      It does not seem to be possible to create a clBuffer from an OpenGL array buffer like so:

      glGenBuffers(1, &mGLBuffer);

       

      glBindBuffer(GL_ARRAY_BUFFER, mGLBuffer);



      glBufferData(GL_ARRAY_BUFFER, 128*128*sizeof(cl_float4), NULL, GL_DYNAMIC_DRAW);

       

      glBindBuffer(GL_ARRAY_BUFFER, 0);

       





       

      mCLBuffer = clCreateFromGLBuffer(sContextCL, CL_MEM_READ_WRITE, mGLBuffer, &sStatusCL);

       



      The call from clCreateFromGLBuffer returns an error of CL_INVALID_GL_OBJECT. I am not sure if this is supposed to be possible according to the specs, it does however work with the NVIDIA driver. Am I missing something ? I am not sure, but I would bet this worked in a previous driver version ... but I am not 100% sure

      I am running the latest XP driver with a HD 5830.