28617bb167
Inside the sequencer the cropping and transform of images/buffers were implemented locally. This reduced the optimizations that a compiler could do and added confusing code styles. This patch adds `IMB_transform` to reduce the confusion and increases compiler optimizations as more code can be inlined and we can keep track of indices inside the inner loop. This increases end-user performance by 30% when playing back aa video in VSE. Reviewed By: ISS, zeddb Differential Revision: https://developer.blender.org/D11549