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
|
/*
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef ANDROID_GLES_CM_HOOKS_H
#define ANDROID_GLES_CM_HOOKS_H
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <EGL/egl.h>
#include <GLES/gl.h>
#define GL_LOGGER 0
#if !defined(__arm__)
#define USE_SLOW_BINDING 1
#else
#define USE_SLOW_BINDING 0
#endif
#undef NELEM
#define NELEM(x) (sizeof(x)/sizeof(*(x)))
#define MAX_NUMBER_OF_GL_EXTENSIONS 32
#if defined(HAVE_ANDROID_OS) && !USE_SLOW_BINDING && !GL_LOGGER && __OPTIMIZE__
#define USE_FAST_TLS_KEY 1
#else
#define USE_FAST_TLS_KEY 0
#endif
#if USE_FAST_TLS_KEY
# include <bionic_tls.h> /* special private C library header */
#endif
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
// EGLDisplay are global, not attached to a given thread
const unsigned int NUM_DISPLAYS = 1;
enum {
IMPL_HARDWARE = 0,
IMPL_SOFTWARE,
IMPL_CONTEXT_LOST,
IMPL_NO_CONTEXT,
IMPL_NUM_IMPLEMENTATIONS
};
// ----------------------------------------------------------------------------
// GL / EGL hooks
#undef GL_ENTRY
#undef EGL_ENTRY
#define GL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
#define EGL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
struct gl_hooks_t {
struct gl_t {
#include "gl_entries.in"
} gl;
struct egl_t {
#include "egl_entries.in"
} egl;
struct gl_ext_t {
void (*extensions[MAX_NUMBER_OF_GL_EXTENSIONS])(void);
} ext;
};
#undef GL_ENTRY
#undef EGL_ENTRY
// ----------------------------------------------------------------------------
extern gl_hooks_t gHooks[IMPL_NUM_IMPLEMENTATIONS];
extern pthread_key_t gGLWrapperKey;
#if USE_FAST_TLS_KEY
// We have a dedicated TLS slot in bionic
static inline gl_hooks_t const * volatile * get_tls_hooks() {
volatile void *tls_base = __get_tls();
gl_hooks_t const * volatile * tls_hooks =
reinterpret_cast<gl_hooks_t const * volatile *>(tls_base);
return tls_hooks;
}
static inline void setGlThreadSpecific(gl_hooks_t const *value) {
gl_hooks_t const * volatile * tls_hooks = get_tls_hooks();
tls_hooks[TLS_SLOT_OPENGL_API] = value;
}
static gl_hooks_t const* getGlThreadSpecific() {
gl_hooks_t const * volatile * tls_hooks = get_tls_hooks();
gl_hooks_t const* hooks = tls_hooks[TLS_SLOT_OPENGL_API];
if (hooks) return hooks;
return &gHooks[IMPL_NO_CONTEXT];
}
#else
static inline void setGlThreadSpecific(gl_hooks_t const *value) {
pthread_setspecific(gGLWrapperKey, value);
}
static gl_hooks_t const* getGlThreadSpecific() {
gl_hooks_t const* hooks = static_cast<gl_hooks_t*>(pthread_getspecific(gGLWrapperKey));
if (hooks) return hooks;
return &gHooks[IMPL_NO_CONTEXT];
}
#endif
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
#endif /* ANDROID_GLES_CM_HOOKS_H */
|
