013a2ce765
OptiX has accepted Catmull-Rom curve data natively since OptiX 7.4, but due to the previous conversion to B-Spline code, the format that data is fed to OptiX wasn't optimal. Each curve segment was put in the vertex buffer as four independent control points, even though continuous segments actually share control points between each other. This patch compacts that so shared control points only occur once in the vertex buffer. This compact form uses less memory and also allows OptiX to easily identify segments that belong together into a curve (those where the step between indices is one). Pull Request: https://projects.blender.org/blender/blender/pulls/125899
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