Adding glew as an embedded external.
Using GLEW for VSync extension.
Added a message for GLEW not found.
Added the shaders utility libs.
Didn't fix that include.
Including WGLew is windows-only.
GLEW init and names for *modules.
Using a trivial shader.
VideoManager handles the default shader.
TextureRectangle use vertex array.
SolidRectangle and Sprite.
Light and simple refactor.
Text don't use shaders.
More shaders and not working.
Added shaders to ugdk_graphic.i
ShaderProgram add uniform.
ShaderProgram expects a geometry_matrix variable.
Renamed "shader" namespace/dir to "opengl"
Geometry AsMatrix4x4 uses float
Include GLEW on header for files in opengl namespace.