To reproduce:
1. Open user's attached project ("IndirectDraw")
2. Open "IndirectDraw" scene
3. Select "Main Camera" and disable "IndirectDraw" script component
4. Enter Play mode
-- Rocks are visible
5. Enable the same Component
-- Rocks are invisible

Expected: Rocks are visible with the Script Component enabled
Actual: Rocks are invisible with the Script Component enabled

Reproduced with: 2018.3.5f1, 2019.1.0b2, 2019.2.0a4

Notes:
- Could not test with 2017.4 due compilation errors
- ArgumentException: ComputeBuffer.SetData() - error is thrown upon enabling the Component in the Play mode
- ArgumentNullException: Argument cannot be null. - error is thrown upon enabling the Component in the Play mode