private void glWrite(int x, int y, string text)
{
// Get the OpenGL object.
OpenGL gl = openGLControl.OpenGL;
char[] temp = new char[text.Length];
for (int i = 0; i < text.Length; i++)
{
temp[i] = text[i];
}
Marshal.Copy(temp, 0, ptr1, temp.Length);
gl.PushAttrib(OpenGL.GL_DEPTH_TEST); // Save the current Depth test settings (Used for blending )
gl.Disable(OpenGL.GL_DEPTH_TEST); // Turn off depth testing (otherwise we get no FPS)
gl.Disable(OpenGL.GL_TEXTURE_2D); // Turn off textures, don't want our text textured
gl.MatrixMode(OpenGL.GL_PROJECTION); // Switch to the projection matrix
gl.PushMatrix(); // Save current projection matrix
gl.LoadIdentity();
gl.Ortho(0, 640, 0, 429, -1, 1); // Change the projection matrix using an orthgraphic projection
gl.MatrixMode(OpenGL.GL_MODELVIEW); // Return to the modelview matrix
gl.PushMatrix(); // Save the current modelview matrix
gl.LoadIdentity();
gl.Color(1.0, 1.0, 1.0); // Text color
gl.RasterPos(x, y); // Position the Text
gl.PushAttrib(OpenGL.GL_LIST_BIT); // Save's the current base list
gl.ListBase(based + 2); // Set the base list to our character list
gl.CallLists(text.Length, OpenGL.GL_UNSIGNED_BYTE, ptr1); // Display the text
gl.PopAttrib(); // Restore the old base list
gl.MatrixMode(OpenGL.GL_PROJECTION); //Switch to projection matrix
gl.PopMatrix(); // Restore the old projection matrix
gl.MatrixMode(OpenGL.GL_MODELVIEW); // Return to modelview matrix
gl.PopMatrix(); // Restore old modelview matrix
gl.Enable(OpenGL.GL_TEXTURE_2D); // Turn on textures, don't want our text textured
gl.PopAttrib(); // Restore depth testing
}
public void glCallListsByte(int n, byte[] lists)
{
gl.CallLists(n, lists);
}
