when I try to use the shadow matte with the gpu enabled, the object with the shadow matte turns black and doesn't receive shadows or reflections. when I switch back to cpu rendering it goes back to normal.
Solved! Go to Solution.
Solved by peter.horvath6V6K3. Go to Solution.
Shadow matte shader is not supported on the GPU yet. Unsupported shaders, lights and parameters are marked with an asterisk (*) in the label. You can also check the unsupported shaders in the plugin clicking on the Limitations... button next to the device selection or here:
https://docs.arnoldrenderer.com/display/A5ARP/Supported+Features+and+Known+Limitations