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Votes

0

Found in

2019.3.0a2

2019.3.15f1

2019.4

2020.1

2020.2

2021.1

Issue ID

1278749

Regression

Yes

FPS drops when the Camera is on the right side of the instantiated GameObject with Graphics.DrawMeshInstancedIndirect method

Graphics - LowLevel

-

How to reproduce:
1. Open the user's attached "GPU instancing test.zip" project
2. Open the "InstancedIndirectExample" Scene
3. Enter Play Mode
4. Move the Camera to the right side of the instantiated GameObject with the mouse (See attached "1278749_repro.mp4")
5. Observe the FPS in the Statistics window

Expected result: FPS is the stay when the Camera is on the left and right side of the instantiated GameObject
Actual result: FPS is lower (around 30-40) when the Camera is on the right side of the instantiated GameObject, while on the left side is higher (around 70-120)

Reproducible with: 2019.3.0a2 2019.4.12f1, 2020.1.9f1, 2020.2.0b8, 2021.1.0a1
Not reproducible with: 2018.4.28f1, 2019.3.0a1

  1. Response avatar

    Resolution Note:

    This is normal slow down due to large GPU overdraw. Depending of the cubes generation order, the pixels can be fastly rejected or not by the depth-test.

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