[PATCH 1/4] dx8vb: Add stubs for D3DX8 interface

[Henri Verbeet]

Perhaps this is sufficiently far removed from core Direct3D that
nobody cares, but for what it's worth:

On 31 October 2017 at 03:01, Fabian Maurer <dark.shadow4 at web.de> wrote:
> +typedef struct
> +{
> +    ID3DX8 ID3DX8_iface;
> +    LONG ref;
> +} d3dx8;
Please don't typedef structures just to save keystrokes.

> +static HRESULT WINAPI d3dx8_QueryInterface(ID3DX8 *iface, REFIID riid, void **ppv)
> +{
> +    d3dx8 *This = impl_from_ID3DX8(iface);
Please use lowercase variable names.

> +
> +    TRACE("(%p/%p)->(%s,%p)\n", iface, This, debugstr_guid(riid), ppv);
> +
> +    *ppv = NULL;
> +
> +    if (IsEqualGUID(riid, &IID_IUnknown))
> +        *ppv = &This->ID3DX8_iface;
> +    else if(IsEqualGUID(riid, &IID_ID3DX8))
> +        *ppv = &This->ID3DX8_iface;
> +    else if(IsEqualGUID(riid, &IID_IPersistPropertyBag))
> +        FIXME("No interface for IID_IPersistPropertyBag\n");
> +    else if(IsEqualGUID(riid, &IID_IPersistStreamInit))
> +        FIXME("No interface for IID_IPersistStreamInit\n");
> +    else
> +        FIXME("No interface for %s\n", debugstr_guid(riid));
Not implementing an arbitrary interface is a WARN at best.

> +
> +    if (*ppv)
> +    {
> +        IUnknown_AddRef((IUnknown *)(*ppv));
> +        return S_OK;
> +    }
> +
> +    return E_NOINTERFACE;
> +}
I think Nikolay already hinted at this, but this is fairly different
from the canonical QueryInterface() implementation, especially for an
object that only implements a single interface.

> +static HRESULT WINAPI d3dx8_CreateFont(ID3DX8 *iface, Direct3DDevice8 *device,
> +          LONG hFont, D3DXFont **retFont)
Please use lowercase parameter names, and avoid the stray 'h'.

> +static HRESULT WINAPI d3dx8_AssembleShaderFromFile(ID3DX8 *iface, BSTR file, LONG flags, BSTR *log,
> +        D3DXBuffer **constants, D3DXBuffer **ppVertexShader)
> +{
> +    FIXME("(%s, %i, %p, %p, %p): stub!\n", debugstr_w(file), flags, log, constants, ppVertexShader);
I certainly have my preferences when it comes to trace formatting, but
I think "%i" is questionable for flags regardless of preference.

> +static const ID3DX8Vtbl ID3DX8_Vtbl =
"d3dx8_vtbl"

> +HRESULT d3dx8_create(IUnknown *outer_unk, void **ppv)
> +{
> +    d3dx8 *object;
> +
> +    TRACE("(%p,%p)\n", outer_unk, ppv);
> +
> +    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(d3dx8));
"sizeof(*object)"