Problem Implementing Into DirectX9 Hook

[SidRaven]

Hey guys, i've been using something called a "ProxyDLL" DirectX9 hook to get access to a directx 9 game which i want to try add GUI to.

I've added all the includes etc, and it compiles but when i load the game the screen is totally blank but i still hear menu sounds.

The hook i'm using is located here:

http://www.mikoweb.eu/index.php?node=28

This is my includes:

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#include "CEGUI.h"
#include "d3d9renderer.h"


This is my begin scene:

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HRESULT myIDirect3DDevice9::BeginScene(void)
{
   CEGUI::DirectX9Renderer* m_CEGUI = new CEGUI::DirectX9Renderer(m_pIDirect3DDevice9, 0);
   new CEGUI::System(m_CEGUI);

   System::getSingleton().setGUISheet(myRoot);

    return(m_pIDirect3DDevice9->BeginScene());
}


And this is my end scene:

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HRESULT myIDirect3DDevice9::EndScene(void)
{
   CEGUI::System::getSingleton().renderGUI();
    return(m_pIDirect3DDevice9->EndScene());
}


I'm probably going about it the wrong way, but from what i understand.

CEGUI::DirectX9Renderer* m_CEGUI = new CEGUI::DirectX9Renderer(m_pIDirect3DDevice9, 0);

Is creating a whole new DirectX render surface? But all i want to do is get the current one of the game i'm hooked into...

Any help you can give me is very much appreciated.

Thanks.

[MacMan45]

Woah, you are creating a new CEGUI::DirectX9Renderer at the start of every scene? Oh & a new CEGUI System as well...

You do realise that BeginScene is called before every single frame right?


You will want to be creating it somewhere at startup.
Seeing your proxying d3d9, maybe CreateDevice would be a good place to do this?

Your EndScene hook looks fine though


On a side note, i'm also hooking a game, but i'm going the route of redirecting the virtual table pointers, its proving to be quite a challenge!!

[SidRaven]

After putting the thing for creating a new renderer etc in an Init event, it still does the same thing. Any ideas?

[MacMan45]

Could you post up the new code?
I'll have a look & see if i can spot anything

Oh & another side note, i finally cracked the virtual table, just replacing the functions i want, saves on a lot of typing

[MacMan45]

Ok, well now i'm in the same boat as you.

I can draw to the screen with my own code, but as soon as i initialise CEGUI dx9 renderer, the screen goes black.

I can hear the game music in the background.

I even put a timer delay on CEGUI.
Before it was initialised, i could see the hooked game fine.
When the timer expired & CE was setup, the screen went black & my CE defined window showed up happily.

I even bound a key to the renderGUI() but stopping that would only hide my own window, still leaving the background as black.

I have tried playing with the alpha, setting it from 0.5 to 0.1.
I even tried 0 alpha, still nothing but black (& my own CE window).

I just tried setting the root window to hidden ( hide() ) & that still leaves me with a black screen (except, as to be expected, my window is gone )

I hope this is a stupid me error, has anyone seen a blackscreen covering up their world before?

[MacMan45]

Ok, after a bit of forum searching, i think i have an idea on where to start looking.

I think it has something to with the dx9 renderer changing the render states & not restoring them. (performance reasons apparently)

I'm guessing it is changing something my hooked game cares about

Its 2am here, so i'll try some stuff out tomorrow sometime.

[MacMan45]

I have solved my problem, hopefully yours too...


Call this after you renderGUI()

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device->SetVertexShader(0);
device->SetPixelShader(0);
device->SetFVF(D3DFVF_XYZRHW | D3DFVF_DIFFUSE);
device->SetRenderState(D3DRS_ZENABLE, false);
device->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
device->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
device>SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_DIFFUSE);
device->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
device>SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);
device>SetRenderState(D3DRS_ZENABLE, true);

Now, you may not need all of those, i found that in another proxy dll from code guru.
(http://www.codeguru.com/cpp/g-m/directx ... hp/c11453/)

I'm working on cutting down that list for my game, but i thought i would give you the lot, incase your hooked game relies on one mine doesn't.