Uniform values cannot be set if the shader is not bound, and calling Blit would
release the shader making subsequent iteration count updates not work. This
commit makes sure the shader is bound before trying to do so.
Ultimately it would be nice if nodes could configure this themselves, but
CLAMP_TO_BORDER behavior can be written manually into the shader if that
behavior is desired, whereas CLAMP_TO_EDGE cannot.
Implemented the ability to load a node externally. This XML data could also
eventually be copy/pasted between instances of Olive alongside XML data for
other nodes and their connections to allow copying entire node trees.
These could be reimplemented almost wholesale, however the code has been
cleaned up and documented and the XML metadata has been updated to support
international translations.
While the copied graph doesn't pick up InvalidateCache signals, some node
processing relies on NodeInput update signals to update their internals
correctly.
Previous iteration used some "magic code" that added clips automatically to the
timeline. This was functional but ultimately outside of the undo commands'
control meaning nodes could be infinitely added and abandoned. This makes the
add process part of the undo command which means it's all undoable as the user
would expect.
This will be useful for various reasons, however the behavior of selecting
gaps and transitions will need to be regulated harder than clips in the near
future.
Creating and destroying textures is a slow process, particularly when we can
re-use them throughout most of the render chain. We now keep them stored so
they can be re-used which improves performance substantially.
Not doing this appeared to corrupt the composited buffer somehow and return a
black image if there were two empty texture connections daisychained together
on two AlphaOver instances.
This was many changes that were largely fundamentally related. They included:
- More const modifiers to enforce read only node graphs
- Support for fragment and vertex shaders from the nodes
- Support for node code loaded externally (embedded into the binary)
- Fixed issue preventing two textures from being used in a shader
- Removed several unused functions and cleaned up code
- Fixed video media node misreading its matrix input
itsmattkc