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DXGI Enumeration

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Entry posted by jollyjeffers ·

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I've been pretty busy lately, but I thought I'd post the following just to prove I was doing something and that I'm still alive [grin]

Adapter 0:
	Dedicated Video Memory: 0gb 127mb 948kb 0b
	Shared Video Memory: 0gb 64mb 0kb 0b
	Device ID: 20040
	Vendor ID: 4098
	Sub System ID: 135170
	Revision: 0
	Description 'RADEON 9800 PRO'
	Output 0 for adapter 0
		Name: \\.\DISPLAY1
		Output is NOT attached to desktop
		Desktop Coordinates: [0,0] to [1024,768]
		Current display mode:
			Dimensions: 1024x768 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 0:
			Dimensions: 1920x1080 @ 59hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 1:
			Dimensions: 1280x720 @ 59hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 2:
			Dimensions: 1024x768 @ 75hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 3:
			Dimensions: 1024x768 @ 72hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 4:
			Dimensions: 1024x768 @ 70hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 5:
			Dimensions: 1024x768 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 6:
			Dimensions: 1024x768 @ 86hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 7:
			Dimensions: 960x720 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 8:
			Dimensions: 856x480 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 9:
			Dimensions: 848x480 @ 75hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 10:
			Dimensions: 848x480 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 11:
			Dimensions: 800x600 @ 75hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 12:
			Dimensions: 800x600 @ 72hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 13:
			Dimensions: 800x600 @ 70hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 14:
			Dimensions: 800x600 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 15:
			Dimensions: 800x600 @ 56hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 16:
			Dimensions: 800x600 @ 94hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 17:
			Dimensions: 720x576 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 18:
			Dimensions: 720x480 @ 75hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 19:
			Dimensions: 720x480 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 20:
			Dimensions: 704x480 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 21:
			Dimensions: 640x480 @ 75hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 22:
			Dimensions: 640x480 @ 72hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
		Supported display mode 23:
			Dimensions: 640x480 @ 60hz
			Format: DXGI_FORMAT_B8G8R8A8_UNORM
Interesting, isn't it. It's the output from examining the available data from the DXGI (DirectX Graphics Infrastructure). Whilst D3D10 has fixed feature caps, things like resolution and monitor output can't be fixed - so enumerations do still exist. The above is pretty similar to IDirect3D9::GetAdapterIdentifier().

The interesting part is being able to get the exact amount of VRAM installed on the physical hardware. Yes, you can get it currently - but it's nowhere near as easy...

I'm not too sure whats up with the refresh rates on the supported modes. Some really odd values in there. 59hz? 86hz? 94hz? I think they should be 60/85/95 respectively. Refresh rates are expressed as rational numbers - with some really odd values.

I installed the Feb '06 SDK on my machine and started building up a simple D3D10 application. It doesn't really do much at the moment, but I'm trying to build up a simple application without copy-n-pasting the stock code. Thus going from the API reference and documentation. Yes, I am that hardcore [razz]

I'm planning on putting some D3D10 goodness into this journal in the near future. I've got a few simple applications I want to mess with, and I'll be posting any notable findings here...

Any requests?
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One thing I always wanted to get around to doing was a dynamic non-linear/planar tesselator. i.e. increase the # of verts between existing verts, but also curve them appropiately.
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You mean some form of higher-order surfaces? bezier/cubic patches and so on?

I might see about including something on that, but the current idea I have is to go for the really simple core basics. Sort of like a foundation "here's what sort of information you have, here's how to manipulate it - now go do some cool stuff!"

Jack
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