Nvidia has announces NVIDIA Studio Driver that supports RTX-accelerated ray tracing in V-Ray Next for 3ds Max, Blender Cycles and V-Ray Next for Maya soon to follow.
To enable NVIDIA RTX within V-Ray Next for 3ds Max, you will now find a drop-down choice to use traditional CUDA path or new RTX path.
When switching from CUDA (and no CPU) to the RTX engine while using RTX GPUs the benefits are scene dependent but that an average speedup of 40% was achievable in their tests
Chaos Group is offering a free 30-day trial of V-Ray for 3ds Max with RTX support built-in. Read more about RTX support in V-Ray Next for 3ds Max on Chaos Group's Blog
Blender 2.81 release’s built-in Cycles renderer, brings RTX hardware acceleration by adding experimental support of NVIDIA OptiX. Rendering with OptiX and RTX GPUs
To turn on RTX acceleration in Blender 2.81:
-From the “Edit” menu, select “Preferences”.
-Select the “System” tab in the left hand navigation, then under “Cycles Render devices” select “OptiX”.
-In the scene settings pane, by default in the bottom right, select the “Render Properties” tab, indicated by a camera icon.
-In the “Render Engine” field, select “Cycles” and in “Device” field select “GPU Compute”.
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