the old debug_assert always ran and tested the expression, which slows
down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new
ASSERT behaves like assert and ENSURE like the old debug_assert. Let's
change any time-critical but not-super-important ENSURE to ASSERT to
speed up release builds. (already done in bits.h and unique_range.h)
This was SVN commit r9362.
Use index VBOs in model renderers, for performance.
Be more explicit about static/dynamic VBOs.
Add VBO usage to renderer stats.
Clean up some obsolete unused code.
This was SVN commit r9052.
Add Ogl_Shader and Ogl_Program handle types for shaders/programs loaded
from
files.
In the vertexshader render path, use a vertex program for lighting for
optimization.
This was SVN commit r2853.