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[Solved]ATI card not rendering using hardware vertex proc.

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I am writing a model viewer to view COllada models. The viewer renders fine on Nvidia cards but ATI cards render a blank screen. This is fixed if I switch to software vertex processing. I have checked the device caps and it does support hardware vertex processing.

[Edited by - fkhan on September 6, 2010 12:26:53 AM]

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No exceptions are being thrown and all unhandled exceptions are being caught via an event handler. The scene just renders blank on ATI cards. I tried using windows xp Device class instead of DeviceEx but still showing a blank screen. Even the device state returns S_OK so it is not that the device is being lost. The scene renders properly when using SoftwareVertexProcessing. I am unsure what to look for but I'll turn on debug runtimes.

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You were very close! but I decided to go a notch more. Actually I was asking directx to use PS 3.0 with a VS 1.1! try making that work!

I had an inkling that the two shader profiles might conflict when I was testing but if Nvidia can make them jive so should ATI :)

Here is a compatibility chart for shader profiles I found useful

http://msdn.microsoft.com/en-us/library/bb509626%28v=VS.85%29.aspx

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