1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (c) 2008-2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA CORPORATION is strictly prohibited.
*/
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#include "PhysXIndicator.h"
#include "AgMMFile.h"
#include <windows.h>
#if _MSC_VER >= 1800
#include <VersionHelpers.h> // for IsWindowsVistaOrGreater
#endif
#include <stdio.h>
using namespace nvidia;
using namespace physx;
// Scope-based to indicate to NV driver that CPU PhysX is happening
PhysXCpuIndicator::PhysXCpuIndicator() :
mPhysXDataPtr(NULL)
{
bool alreadyExists = false;
mPhysXDataPtr = (physx::NvPhysXToDrv_Data_V1*)PhysXCpuIndicator::createIndicatorBlock(mSharedMemConfig, alreadyExists);
if (!mPhysXDataPtr)
{
return;
}
if (!alreadyExists)
{
mPhysXDataPtr->bGpuPhysicsPresent = 0;
mPhysXDataPtr->bCpuPhysicsPresent = 1;
}
else
{
mPhysXDataPtr->bCpuPhysicsPresent++;
}
// init header last to prevent race conditions
// this must be done because the driver may have already created the shared memory block,
// thus alreadyExists may be true, even if PhysX hasn't been initialized
NvPhysXToDrv_Header_Init(mPhysXDataPtr->header);
}
PhysXCpuIndicator::~PhysXCpuIndicator()
{
if (!mPhysXDataPtr)
{
return;
}
mPhysXDataPtr->bCpuPhysicsPresent--;
mPhysXDataPtr = NULL;
mSharedMemConfig.destroy();
}
void* PhysXCpuIndicator::createIndicatorBlock(AgMMFile &mmfile, bool &alreadyExists)
{
char configName[128];
// Get the windows version (we can only create Global\\ namespace objects in XP)
#if _MSC_VER >= 1800
// Windows 8.1 SDK, which comes with VS2013, deprecated the GetVersionEx function
// Windows 8.1 SDK added the IsWindowsVistaOrGreater helper function which we use instead
BOOL bIsVistaOrGreater = IsWindowsVistaOrGreater();
#else
OSVERSIONINFOEX windowsVersionInfo;
/**
Operating system Version number
---------------- --------------
Windows 7 6.1
Windows Server 2008 R2 6.1
Windows Server 2008 6.0
Windows Vista 6.0
Windows Server 2003 R2 5.2
Windows Server 2003 5.2
Windows XP 5.1
Windows 2000 5.0
**/
windowsVersionInfo.dwOSVersionInfoSize = sizeof(windowsVersionInfo);
GetVersionEx((LPOSVERSIONINFO)&windowsVersionInfo);
bool bIsVistaOrGreater = (windowsVersionInfo.dwMajorVersion >= 6);
#endif
if (bIsVistaOrGreater)
{
NvPhysXToDrv_Build_SectionName((uint32_t)GetCurrentProcessId(), configName);
}
else
{
NvPhysXToDrv_Build_SectionNameXP((uint32_t)GetCurrentProcessId(), configName);
}
mmfile.create(configName, sizeof(physx::NvPhysXToDrv_Data_V1), alreadyExists);
return mmfile.getAddr();
}
//-----------------------------------------------------------------------------------------------------------
PhysXGpuIndicator::PhysXGpuIndicator() :
mPhysXDataPtr(NULL),
mAlreadyExists(false),
mGpuTrigger(false)
{
mPhysXDataPtr = (physx::NvPhysXToDrv_Data_V1*)PhysXCpuIndicator::createIndicatorBlock(mSharedMemConfig, mAlreadyExists);
// init header last to prevent race conditions
// this must be done because the driver may have already created the shared memory block,
// thus alreadyExists may be true, even if PhysX hasn't been initialized
NvPhysXToDrv_Header_Init(mPhysXDataPtr->header);
}
PhysXGpuIndicator::~PhysXGpuIndicator()
{
gpuOff();
mPhysXDataPtr = NULL;
mSharedMemConfig.destroy();
}
// Explicit set functions to indicate to NV driver that GPU PhysX is happening
void PhysXGpuIndicator::gpuOn()
{
if (!mPhysXDataPtr || mGpuTrigger)
{
return;
}
if (!mAlreadyExists)
{
mPhysXDataPtr->bGpuPhysicsPresent = 1;
mPhysXDataPtr->bCpuPhysicsPresent = 0;
}
else
{
mPhysXDataPtr->bGpuPhysicsPresent++;
}
mGpuTrigger = true;
}
void PhysXGpuIndicator::gpuOff()
{
if (!mPhysXDataPtr || !mGpuTrigger)
{
return;
}
mPhysXDataPtr->bGpuPhysicsPresent--;
mGpuTrigger = false;
}
|