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D3D9 GetAdapterModeCount

Started by vbisme Sep 7, 2003 at 10:11 AM 3 replies 350+ views

Original Post

Sep 7, 2003 at 10:11 AM

On my Mobility Radeon 8500, when I call GetAdapterModeCount for the format D3DFMT_A8R8G8B8 I get a return value of 0. Does that mean my card doesn''t support that adapter mode? However, I could create backbuffer and surfaces with D3DFMT_A8R8G8B8 though? What does this mean? It seem like the only available mode for the adapter is D3DFMT_X8R8G8B8. What does it mean?

Enselic

Sep 7, 2003 at 10:28 AM

You do not have any adapter mode with an alpha channel, which is normal AFAIK. The A in D3DFMT_A8R8G8B8 means that the first 8 bits belongs to the alpha-channel while the X means that the bits are unused.

vbisme

Author

vbisme

Sep 7, 2003 at 11:03 AM

What does mean adapter mode versus surface format?

Enselic

Sep 7, 2003 at 3:24 PM

The DirectX SDK is your friend.

vbisme

Author

vbisme

Sep 8, 2003 at 4:58 PM

Doesn''t seem to have a clear explaination...Anybody?

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