General code and functionality improvements. Moved more code out of the
OpenGL backend for portability. Implemented audio transitions.
Implemented basic transition animation curve settings.
The nodes now have more control over how their accelerated shaders/sample
functions are run, as well as how items are popped off the value tables.
This allows for various optimizations that we didn't have access to before.
Fixes:
* Values exceeding the encoded range.
Future may account for a certain range
above and below current values.
* Minor calculation problem that prevented
the above fix from working properly.
* Streamlined the shader code.
* Add a vertex shader to handle the scaling.
* Use the viewport resolution as the scaled
version to save performance.
Basic pass at histogram. Uses a power based
scale compared against the total pixel count.
Probably needs a UI toggle to flip lines on
and off as the text and lines in OpenGL are
a large cycles sucker. Could be likely much
faster when migrated to a geometry shader
approach. Uses the scaled viewport resolution
to increase performance as much as possible.
Remove the sum, add some commments, and
make it scale to the full window.
TODO:
* Hook up CM.
* Add UI for intensity
* Add lines at 20% increments, plus under /
overshoot?
* Add UI for increments.
Rather than plugging a matrix into the video input node, the matrix is now
multiplied by the video input using a math node. This is probably more
sensible from a user perspective.
This also means the renderer is tolerant of texture sizes that are not equal
to the sequence size, however most nodes will downsample the texture to the
sequence size (and if not, it will be downsampled once it is cached). Textures
will still *always* be in reference space and the sequence's format. This seems
like the best compromise between backend and frontend congruity.
Results are identical (tested with Olive 0.1.x). Using a straight multiply is faster if the compiler doesn't optimize pow(). It's also safer because with pow(), [the result is undefined if x<0 or if x=0 and y≤0](https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/pow.xhtml).
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.
itsmattkc