2 ** Copyright 2007, The Android Open Source Project
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
8 ** http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_GLES_CM_HOOKS_H
18 #define ANDROID_GLES_CM_HOOKS_H
27 #include <EGL/eglext.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>
35 // set to 1 for debugging
36 #define USE_SLOW_BINDING 0
39 #define NELEM(x) (sizeof(x)/sizeof(*(x)))
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
48 #include <bionic_tls.h> /* special private C library header */
50 // ----------------------------------------------------------------------------
52 // ----------------------------------------------------------------------------
58 #define GL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
59 #define EGL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
62 #include "EGL/egl_entries.in"
70 __eglMustCastToProperFunctionPointerType extensions[MAX_NUMBER_OF_GL_EXTENSIONS];
76 EGLAPI void setGlThreadSpecific(gl_hooks_t const *value);
78 // We have a dedicated TLS slot in bionic
79 inline gl_hooks_t const * volatile * get_tls_hooks() {
80 volatile void *tls_base = __get_tls();
81 gl_hooks_t const * volatile * tls_hooks =
82 reinterpret_cast<gl_hooks_t const * volatile *>(tls_base);
86 inline EGLAPI gl_hooks_t const* getGlThreadSpecific() {
87 gl_hooks_t const * volatile * tls_hooks = get_tls_hooks();
88 gl_hooks_t const* hooks = tls_hooks[TLS_SLOT_OPENGL_API];
92 // ----------------------------------------------------------------------------
93 }; // namespace android
94 // ----------------------------------------------------------------------------
96 #endif /* ANDROID_GLES_CM_HOOKS_H */