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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*********************************************************************
*
* Copyright 2012 Intel Corporation
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*********************************************************************/
#include <assert.h>
#include <map>
#include <memory>
#include <os_thread.hpp>
#include <glproc.hpp>
#include <gltrace.hpp>
namespace gltrace {
typedef std::shared_ptr<Context> context_ptr_t;
static std::map<uintptr_t, context_ptr_t> context_map;
static os::recursive_mutex context_map_mutex;
class ThreadState {
public:
context_ptr_t current_context;
context_ptr_t dummy_context; /*
* For cases when there is no current
* context, but the app still calls some
* GL function that expects one.
*/
ThreadState() : dummy_context(new Context)
{
current_context = dummy_context;
}
};
static OS_THREAD_SPECIFIC_PTR(ThreadState) thread_state;
static ThreadState *get_ts(void)
{
ThreadState *ts = thread_state;
if (!ts) {
thread_state = ts = new ThreadState;
}
return ts;
}
static void _retainContext(context_ptr_t ctx)
{
ctx->retain_count++;
}
void retainContext(uintptr_t context_id)
{
context_map_mutex.lock();
if (context_map.find(context_id) != context_map.end())
_retainContext(context_map[context_id]);
context_map_mutex.unlock();
}
static bool _releaseContext(context_ptr_t ctx)
{
return !(--ctx->retain_count);
}
/*
* return true if the context was destroyed, false if only its refcount
* got decreased. Note that even if the context was destroyed it may
* still live, if it's the currently selected context (by setContext).
*/
bool releaseContext(uintptr_t context_id)
{
bool res = false;
context_map_mutex.lock();
/*
* This can potentially called (from glX) with an invalid context_id,
* so don't assert on it being valid.
*/
if (context_map.find(context_id) != context_map.end()) {
res = _releaseContext(context_map[context_id]);
if (res)
context_map.erase(context_id);
}
context_map_mutex.unlock();
return res;
}
void createContext(uintptr_t context_id)
{
// wglCreateContextAttribsARB causes internal calls to wglCreateContext to be
// traced, causing context to be defined twice.
if (context_map.find(context_id) != context_map.end()) {
return;
}
context_ptr_t ctx(new Context);
context_map_mutex.lock();
_retainContext(ctx);
context_map[context_id] = ctx;
context_map_mutex.unlock();
}
void setContext(uintptr_t context_id)
{
ThreadState *ts = get_ts();
context_ptr_t ctx;
context_map_mutex.lock();
assert(context_map.find(context_id) != context_map.end());
ctx = context_map[context_id];
context_map_mutex.unlock();
ts->current_context = ctx;
if (!ctx->bound) {
ctx->profile = glfeatures::getCurrentContextProfile();
ctx->extensions.getCurrentContextExtensions(ctx->profile);
ctx->features.load(ctx->profile, ctx->extensions);
ctx->bound = true;
}
if (!ctx->boundDrawable) {
/*
* The default viewport and scissor state is set when a context is
* first made current, with values matching the bound drawable. Many
* applications never thouch the default state ever again.
*
* Since we currently don't trace window sizes, and rely on viewport
* calls to deduct, emit fake calls here so that viewport/scissor state
* can be deducated.
*
* FIXME: don't call the real functions here -- just emit the fake
* calls.
*/
GLint viewport[4] = {0, 0, 0, 0};
GLint scissor[4] = {0, 0, 0, 0};
_glGetIntegerv(GL_VIEWPORT, viewport);
_glGetIntegerv(GL_SCISSOR_BOX, scissor);
/*
* On MacOSX the current context and surface are set independently, and
* we might be called before both are set, so ignore empty boxes.
*/
if (viewport[2] && viewport[3] && scissor[2] && scissor[3]) {
_fake_glViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
_fake_glScissor(scissor[0], scissor[1], scissor[2], scissor[3]);
ctx->boundDrawable = true;
}
}
}
void clearContext(void)
{
ThreadState *ts = get_ts();
ts->current_context = ts->dummy_context;
}
Context *getContext(void)
{
return get_ts()->current_context.get();
}
}
|
