Drop gluScaleImage() and gluBuild2DMipmaps().
Drop gluUnPorject() from samples.
Output message if NPOT is unsupported and texture coordinates was scaled. Texture initialization is fail in this case.
Output message if texture dimension exceed the max dimension. Texture initialization is fail in this case.
TKOpenGl does not depends on deprecated GLU anymore.
OpenGl_FrameBuffer::InitWithRB() - add method to initialize FBO with Render Buffer Objects.
OpenGl_FrameBuffer::InitWrapper() - add new method to initialize FBO from currently bound in context.
Aspect_RenderingContext - define type explicitly to EAGLContext* / NSOpenGLContext* for ARC.
OpenGl_Window - allow initialization from alien context for OS X / iOS.
Define GLX_GLXEXT_LEGACY in addition to GL_GLEXT_LEGACY to prevent implicit
inclusion of header GL/glxext.h by system header GL/glx.h
Update glext.t to current state.
Drop unused OpenGl_ArbVBO.
Replace OpenGl_ExtFBO with OpenGl_ArbFBO.
OpenGl_Context - reorganize GL functions management.
OpenGl_GlFunctions structure now stores pointers for all GL functions,
while inheritors specify functions subset using access levels.
Drop fields core12, core13, core14; replace extFBO by arbFBO.
OpenGl_ArbIns, OpenGl_ArbTBO - use GL3.1 core functions
instead of ARB extensions when available.
OpenGl_ArbFBO - provide complete list of functions
OpenGl_GlCore11 - fix misprint
OpenGl_Context.hxx - remove redundant declarations
