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David E. DeMarle authored
CMake changed to look for 2.7 or higher and remember major version. VTK's macros swallow "VERSION 2.7...<4" signature unfortunately. Remove deprecated and use newer OSPRay API with 3.x.: uint for enums box1f instead of vec2f for ranges "valueRanges" TransferFunction parameter is now "value". linear2d for texture transforms no renderertype first argument to new Material (ignored since osp 2.7, removed in osp 3.0) implicit isocontours take appearance settings from GeometricModel With OSP 2.x and OptiX use old api where required.
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