d3d9/tests: Add test for surface format conversion

[Stefan Dösinger]

Am Montag 05 Juli 2010 21:23:07 schrieb Henri Verbeet:
> +        hr = IDirect3DDevice9_StretchRect(device, surf_offscreen64, NULL, 
surf_offscreen_dest64, NULL, 0);
> +        todo_wine ok( hr == D3DERR_INVALIDCALL, "Conversion from %s to %s 
succeeded, shouldn't happen (todo)"
> +            "(code: %08x)\n", "D3DFMT_R32F", "D3DFMT_R16F", hr);
This is interesting. This very conversion motivated the software conversion 
API.

The DirectX9 SDK "Blobs" sample needs it. It creates a R32F surface, stretches 
to a R16F and then uses it for drawing. Later on I realized that DirectX9 
cards(at least my GF7400) don't support R16F, so the sample uses the original 
R32F surface for rendering. DirectX10 cards support R16F however, it would be 
interesting to see how this sample reacts to that.