F4 switch to GPU

[zeljko_zelicWTQ43]

Hi guys, I am not that much into Python, maybe one of can help me out. We all know the F4 activates CPU Raytracing in VRED Pro after starting a new instance of VRED. The funny thing is that once you manually switch to GPU, VRED remembers the GPU flag during the session. Ideally, I would like VRED to jump into GPU RT after I start a new instance, rather than doing it manually. Does anyone know what to change or add in the prefs?

This is the default prefs script.

# Raytracing

KeyF4 = vrKey(Key_F4)

KeyF4.connect("setRenderQuality(VR_QUALITY_RAYTRACING)")

KeyF4.connect("setFaceNormalRendering(false)")

KeyF4.connect("setDiscontinuityRendering(false)")

KeyF4.connect("setAORendering(false)")

KeyF4.setDescription("Render Mode Raytracing")

Thanks in advance!

Z

[__daniel.lincoln__]

Hi, something like this should work.

def gpu_rt():
    setRenderQuality(VR_QUALITY_RAYTRACING)
    setRaytracingMode(1) # GPU
vrFileIOService.newScene.connect(gpu_rt)

Regards,

Dan

[zeljko_zelicWTQ43]

Hi Daniel, thanks for the quick reply, I tried it out, nothing is happening. No error message as such, but nothing is happening to the the icon. It still says CPU.

[__daniel.lincoln__]

Ok, it should change when you click "New" scene icon.

[zeljko_zelicWTQ43]

Nice, that's working, cheers mate.

[wispoxy · Accepted solution]

Python Script Modification: You can modify the Python script that handles the F4 key behavior. The default script looks like this:

Python

# Raytracing
KeyF4 = vrKey(Key_F4)
KeyF4.connect("setRenderQuality(VR_QUALITY_RAYTRACING)")
KeyF4.connect("setFaceNormalRendering(false)")
KeyF4.connect("setDiscontinuityRendering(false)")
KeyF4.connect("setAORendering(false)")
KeyF4.setDescription("Render Mode Raytracing")

To switch to GPU raytracing, you can add the following lines to the script:

Python:

def gpu_rt():
    setRenderQuality(VR_QUALITY_RAYTRACING)
    setRaytracingMode(1)  # GPU
vrFileIOService.newScene.connect(gpu_rt)

Activate GPU Raytracing Manually: If you prefer a manual approach, you can click the “New” scene icon after starting a new instance. This will trigger the GPU raytracing mode.

VRED 2021 introduced the ability to switch between OpenGL, CPU, and GPU raytracing.

[zeljko_zelicWTQ43]

Nice, thanks a lot.