Blender 4.5 LTS changes

[paulmelis]

• Snapping in timeline can be toggled while dragging the playhead by pressing Ctrl
• The minimum driver version required for OptiX has increased to 535
• There are known stability issues with AMD rendering in Blender 4.5.0 LTS
• Intel: GPU hardware ray-tracing package from the Ubuntu repository does not work on Ubuntu 25.04 due to incompatible TBB versions
• Vulkan is here! The popular backend is now on par with OpenGL. OpenGL is still the default in Blender 4.5 LTS. Virtual reality using Vulkan has performance issues. Vulkan backend cannot handle huge meshes (100.000.000 vertices). All textures should fit inside the GPU memory. Vulkan has different limits compared to OpenGL.
• The Point Cloud object type has been fully enabled and the associated experimental option removed. The basics of edit mode have been implemented for the object, including transform, the selection overlay, and the "Set Attribute" operator.
• The unit (W) from light power is removed. This unit was in radiometric, but real world lights are typically specified in photometric units, which caused some confusion, hence the removal
• Ctrl-Wheel while hovering text inputs can increment/decrement numbers in the string