Remove legacy code completely, now dyntopo, multires et al even work on
GL 1.1 for really hardcore users :p
Real purpose here though is to be able to have fast multires drawing
even with VBO off, since it requires using indices for vertex buffers.
Also made own code elf puke an eaten normal update function which
made multires not update normals in solid mode...sorry.
option.
This makes sense, since contexts get created at runtime, there is little
reason to require recompilation for this.
Only works on linux currently, will be doing more OSs later
patch number D706 with changes:
- WITH_GPU_DEBUG just creates a debug context (and enables the debug messaging
system functions) but leaves the checks we had intact. Old patch
added the debug functionality only if we had the flag on to save some
performance.
Rationale here is that we might not want to recompile blender just to get
the extra information, and having users start blender with a -d flag to
get the extra information is also useful for bug reports. Those checks already
existed and most expensive ones are hidden behind a debug mode check
so performance should not be that bad.
- Did some cleanup of existing functionality:
When things go wrong blender side, just print the error,
don't check for GL errors first.
- Did not port changes needed for GLES to regular glew.h
- Got rid of duplicate or very similar new functionality.
Generally, code is more moving things around/cleanup and should work exactly
as before apart from the debug context, so it's safe to add even now.
It also provides a nice substitute function for glu error descriptions
