hooks.h revision 4774338bd0ad1ebe42c311fd0c72f13786b5c800 
1/*
2 ** Copyright 2007, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17#ifndef ANDROID_GLES_CM_HOOKS_H
18#define ANDROID_GLES_CM_HOOKS_H
19
20#include <ctype.h>
21#include <string.h>
22#include <errno.h>
23
24#include <pthread.h>
25
26#include <EGL/egl.h>
27#include <EGL/eglext.h>
28#include <GLES/gl.h>
29#include <GLES/glext.h>
30#include <GLES2/gl2.h>
31#include <GLES2/gl2ext.h>
32#include <GLES3/gl3.h>
33#include <GLES3/gl3ext.h>
34
35#if !defined(__arm__)
36#define USE_SLOW_BINDING            1
37#else
38#define USE_SLOW_BINDING            0
39#endif
40#undef NELEM
41#define NELEM(x)                    (sizeof(x)/sizeof(*(x)))
42
43// maximum number of GL extensions that can be used simultaneously in
44// a given process. this limitation exists because we need to have
45// a static function for each extension and currently these static functions
46// are generated at compile time.
47#define MAX_NUMBER_OF_GL_EXTENSIONS 256
48
49
50#if defined(HAVE_ANDROID_OS) && !USE_SLOW_BINDING && __OPTIMIZE__
51#define USE_FAST_TLS_KEY            1
52#else
53#define USE_FAST_TLS_KEY            0
54#endif
55
56#if USE_FAST_TLS_KEY
57#   include <bionic_tls.h>  /* special private C library header */
58#endif
59
60// ----------------------------------------------------------------------------
61namespace android {
62// ----------------------------------------------------------------------------
63
64// GL / EGL hooks
65
66#undef GL_ENTRY
67#undef EGL_ENTRY
68#define GL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
69#define EGL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
70
71struct egl_t {
72    #include "EGL/egl_entries.in"
73};
74
75struct gl_hooks_t {
76    struct gl_t {
77        #include "entries.in"
78    } gl;
79    struct gl_ext_t {
80        __eglMustCastToProperFunctionPointerType extensions[MAX_NUMBER_OF_GL_EXTENSIONS];
81    } ext;
82};
83#undef GL_ENTRY
84#undef EGL_ENTRY
85
86EGLAPI void setGlThreadSpecific(gl_hooks_t const *value);
87EGLAPI gl_hooks_t const* getGlThreadSpecific();
88
89// ----------------------------------------------------------------------------
90}; // namespace android
91// ----------------------------------------------------------------------------
92
93#endif /* ANDROID_GLES_CM_HOOKS_H */
94