OpenGl_ShaderManager::stdComputeLighting() - handle single directional light specifically for compatibility with broken OpenGL ES drivers. Added test cases using built-in GLSL shading programs.
- TKIVtkDraw toolkit provides IVtk packages functionality in DRAW. - it allows to create VTK interactive view in regular or virtual mode (virtual windows), display OCC objects and dump them. - TKIVtkDraw provides also test commands: ivtlinit, ivtkdisplay, ivtkerase, ivtksetdispmode, ivtksetselmode, ivtkmoveto, ivtkselect, ivtkfit, ivtkdump, ivtkbgcolor. Corrected offscreen rendering mode. Moved vinit command from /v3d/begin script to avoid unused occ view in ivtk tests.