In older BAM files (version <= 6.42), _fixed_depth will have an uncertain value after loading, leading to incorrect transform calculations, which cause rendering issues (see issue #474)
Shaders without #version line (which are supposed to indicate GLSL 1.10) will be interpreted differently by different drivers, so this is almost certainly a mistake. In the future, we can forbid this altogether or insert #version 110 automatically.
This makes it possible to use BillboardEffect to specify a fixed distance to the camera, in order to keep them at a fixed apparent size.
This also enables serialization to .bam of the reference NodePaths of BillboardEffect and CompassEffect.
c18abad8c3 added a call that resets the m_isInContact flag, so this resets it, for better or worse. We may want to revisit whether #349 was indeed the right fix to #250.
Fixes#453
Officially, in core profile OpenGL 3.2+, calling it with a value higher than 1.0 is an error, but many vendors seem to let us. Apple's implementation does not. It appears that checking the maximum line width is a way to deal with this.
Fixes#466
Functions get_point_a() and get_point_b() appear to return the top of the cylinder section of the tube, not the tip of the endcap, making subtracting the radius unnecessary.
Even a brief error message in the assertion is infinitely more useful to a user who is not at home in the source code, especially for assertions that may reasonably be triggered by honest user mistakes.
It's not really reasonable to expect a user to find every occurrence of a cached resource that might be using an open stream and remove it or crash otherwise.
This is fixed by keeping the multifile stream open as long as any substreams are still pointing to it, using a simplified reference counting (care is taken not to fully make StreamWrapper reference-counted, since it's not in express and existing uses should not be broken).
Fixes#449
Also see #428
Having depth test disabled is the default OpenGL state, and callbacks may quite reasonably expect to see the default state. Kivy seems to expect this, for one.
This is necessary for GLSL 1.30 which deprecates gl_FragData but does not yet support layout(location=) specifiers
Also fix some function pointer checks for pre-GL 3.0
Fixes#455
Mitchell Stokes
rdb
Derzsi Dániel
loblao
Donny Lawrence
Younguk Kim
David Staer