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/* $Id: VBoxICD.c $ */
/** @file
* VirtualBox Windows Guest Mesa3D - OpenGL driver loader.
*/
/*
* Copyright (C) 2018-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include <VBoxWddmUmHlp.h>
#include <common/wddm/VBoxMPIf.h>
static const char *g_pszGalliumDll =
#ifdef VBOX_WOW64
"VBoxGL-x86.dll"
#else
"VBoxGL.dll"
#endif
;
static const char *g_pszChromiumDll =
#ifdef VBOX_WOW64
"VBoxOGL-x86.dll"
#else
"VBoxOGL.dll"
#endif
;
extern struct VBOXWDDMDLLPROC aIcdProcs[];
HMODULE volatile g_hmodICD = NULL;
static NTSTATUS
vboxDdiQueryAdapterInfo(D3DKMT_HANDLE hAdapter,
VBOXWDDM_QAI *pAdapterInfo,
uint32_t cbAdapterInfo)
{
NTSTATUS Status;
D3DKMTFUNCTIONS const *d3dkmt = D3DKMTFunctions();
if (d3dkmt->pfnD3DKMTQueryAdapterInfo)
{
D3DKMT_QUERYADAPTERINFO QAI;
memset(&QAI, 0, sizeof(QAI));
QAI.hAdapter = hAdapter;
QAI.Type = KMTQAITYPE_UMDRIVERPRIVATE;
QAI.pPrivateDriverData = pAdapterInfo;
QAI.PrivateDriverDataSize = cbAdapterInfo;
Status = d3dkmt->pfnD3DKMTQueryAdapterInfo(&QAI);
}
else
{
Status = STATUS_NOT_SUPPORTED;
}
return Status;
}
void VBoxLoadICD(void)
{
NTSTATUS Status;
D3DKMT_HANDLE hAdapter = 0;
D3DKMTLoad();
Status = vboxDispKmtOpenAdapter(&hAdapter);
if (Status == STATUS_SUCCESS)
{
VBOXWDDM_QAI adapterInfo;
Status = vboxDdiQueryAdapterInfo(hAdapter, &adapterInfo, sizeof(adapterInfo));
if (Status == STATUS_SUCCESS)
{
const char *pszDll = NULL;
switch (adapterInfo.enmHwType)
{
case VBOXVIDEO_HWTYPE_VBOX: pszDll = g_pszChromiumDll; break;
default:
case VBOXVIDEO_HWTYPE_VMSVGA: pszDll = g_pszGalliumDll; break;
}
if (pszDll)
{
g_hmodICD = VBoxWddmLoadSystemDll(pszDll);
if (g_hmodICD)
{
VBoxWddmLoadAdresses(g_hmodICD, aIcdProcs);
}
}
}
vboxDispKmtCloseAdapter(hAdapter);
}
}
/*
* MSDN says:
* "You should never perform the following tasks from within DllMain:
* Call LoadLibrary or LoadLibraryEx (either directly or indirectly)."
*
* However it turned out that loading the real ICD from DLL_PROCESS_ATTACH works,
* and loading it in a lazy way fails for unknown reason on 64 bit Windows.
*
* So just call VBoxLoadICD from DLL_PROCESS_ATTACH.
*/
BOOL WINAPI DllMain(HINSTANCE hDLLInst,
DWORD fdwReason,
LPVOID lpvReserved)
{
RT_NOREF(hDLLInst);
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
VBoxLoadICD();
break;
case DLL_PROCESS_DETACH:
if (lpvReserved == NULL)
{
/* "The DLL is being unloaded because of a call to FreeLibrary." */
if (g_hmodICD)
{
FreeLibrary(g_hmodICD);
g_hmodICD = NULL;
}
}
else
{
/* "The DLL is being unloaded due to process termination." */
/* Do not bother. */
}
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
default:
break;
}
return TRUE;
}
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