D3D9:

- Assign width and height to the actual powers of two rather than to the exponents...
- Clean up FramebufferManager()
- Make use of more depth buffer formats to prevent some devices from failing to create a depth buffer

Should fix issue 3256.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6730 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoDX9/Src/D3DBase.h

@@ -74,6 +74,10 @@ void ShowD3DError(HRESULT err);
 // returns true if size was changed
 bool FixTextureSize(int& width, int& height);
 
+// returns true if format is supported
+bool CheckTextureSupport(DWORD usage, D3DFORMAT tex_format);
+bool CheckDepthStencilSupport(D3DFORMAT target_format, D3DFORMAT depth_format);
+
 // The following are "filtered" versions of the corresponding D3Ddev-> functions.
 void SetTexture(DWORD Stage, IDirect3DBaseTexture9 *pTexture);
 void SetRenderState(D3DRENDERSTATETYPE State, DWORD Value);