4n How to Hook DirectX11 get Shader bytecode RRS feed

  • Question

  • 【DirectX9 Get shader bytecode-】 I hook DrawIndexedPrimitive

    HookCode(PPointer(g_DeviceBaseAddr + $148)^,@NewDrawIndexedPrimitive, @OldDrawIndexedPrimitive);    
    function NewDrawIndexedPrimitive(const Device:IDirect3DDevice9;_Type: TD3DPrimitiveType; BaseVertexIndex: Integer; MinVertexIndex, NumVertices, startIndex, primCount: LongWord): HResult; stdcall;
        ppShader: IDirect3DVertexShader9;
        Device.GetVertexShader(ppShader);//<------1.Get ShaderObject(ppShader)
        ppShader.GetFunction(_Code,_CodeLen);//<----2.Get bytecode from ShaderObject(ppShader)
        Result:=OldDrawIndexedPrimitive(Self,_Type,BaseVertexIndex,MinVertexIndex, NumVertices, startIndex, primCount);

    【How to DirectX11 Get VSShader bytecode?】 I hook DrawIndexed

    pDrawIndexed:=PPointer(PUINT_PTR(UINT_PTR(g_ImmContext)+0)^ + 12 * SizeOf(Pointer))^;
    procedure NewDrawIndexed(g_Real_ImmContext:ID3D11DeviceContext;IndexCount:     UINT;StartIndexLocation: UINT;BaseVertexLocation: Integer); stdcall;
        game_pVertexShader: ID3D11VertexShader;
            ppClassInstances: ID3D11ClassInstance;
            NumClassInstances: UINT
        g_Real_ImmContext.VSGetShader(game_pVertexShader,ppClassInstances,NumClassInstances);    //<------1.Get ShaderObject(game_pVertexShader)
        .....//<----2.Here's how to get bytecode from ShaderObject(game_pVertexShader)?
        OldDrawIndexed(ImmContext, IndexCount, StartIndexLocation, BaseVertexLocation);

    Another way:

    HOOK CreateVertexShader()


    HOOK need to be created before the game CreateVertexShader, HOOK will not get bytecode if the game is running later,I need to get bytecode at any time like DirectX9

    • Edited by hksoobe Sunday, February 25, 2018 9:07 AM
    • Moved by Annie Chen-MSFT Monday, February 26, 2018 3:17 AM
    Sunday, February 25, 2018 5:59 AM


All replies

  • Hi @hksoobe,

    Since this forum is only for account related issues, I will move this DirectX11 related thread to another forum so that you can get advice where to post this question.

    Thanks for your understanding.

    Best Regards,


    MSDN Community Support
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    Monday, February 26, 2018 3:13 AM
  • I'd ask for help over here.




    Regards, Dave Patrick ....
    Microsoft Certified Professional
    Microsoft MVP [Windows Server] Datacenter Management

    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees, and confers no rights.

    Monday, February 26, 2018 3:35 AM