hooks.h revision 31272606149d83437a097800074b21e9e6a205ad 
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
33#if !defined(__arm__)
34#define USE_SLOW_BINDING            1
35#else
36#define USE_SLOW_BINDING            0
37#endif
38#undef NELEM
39#define NELEM(x)                    (sizeof(x)/sizeof(*(x)))
40
41// maximum number of GL extensions that can be used simultaneously in
42// a given process. this limitation exists because we need to have
43// a static function for each extension and currently these static functions
44// are generated at compile time.
45#define MAX_NUMBER_OF_GL_EXTENSIONS 256
46
47
48#if defined(HAVE_ANDROID_OS) && !USE_SLOW_BINDING && __OPTIMIZE__
49#define USE_FAST_TLS_KEY            1
50#else
51#define USE_FAST_TLS_KEY            0
52#endif
53
54#if USE_FAST_TLS_KEY
55#   include <bionic_tls.h>  /* special private C library header */
56#endif
57
58// ----------------------------------------------------------------------------
59namespace android {
60// ----------------------------------------------------------------------------
61
62// GL / EGL hooks
63
64#undef GL_ENTRY
65#undef EGL_ENTRY
66#define GL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
67#define EGL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
68
69struct egl_t {
70    #include "EGL/egl_entries.in"
71};
72
73struct gl_hooks_t {
74    struct gl_t {
75        #include "entries.in"
76    } gl;
77    struct gl_ext_t {
78        __eglMustCastToProperFunctionPointerType extensions[MAX_NUMBER_OF_GL_EXTENSIONS];
79    } ext;
80};
81#undef GL_ENTRY
82#undef EGL_ENTRY
83
84EGLAPI void setGlThreadSpecific(gl_hooks_t const *value);
85EGLAPI gl_hooks_t const* getGlThreadSpecific();
86
87// ----------------------------------------------------------------------------
88}; // namespace android
89// ----------------------------------------------------------------------------
90
91#endif /* ANDROID_GLES_CM_HOOKS_H */
92