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      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 #define MAX_NUMBER_OF_GL_EXTENSIONS 64
     41 
     42 
     43 #if defined(HAVE_ANDROID_OS) && !USE_SLOW_BINDING && __OPTIMIZE__
     44 #define USE_FAST_TLS_KEY            1
     45 #else
     46 #define USE_FAST_TLS_KEY            0
     47 #endif
     48 
     49 #if USE_FAST_TLS_KEY
     50 #   include <bionic_tls.h>  /* special private C library header */
     51 #endif
     52 
     53 // ----------------------------------------------------------------------------
     54 namespace android {
     55 // ----------------------------------------------------------------------------
     56 
     57 // GL / EGL hooks
     58 
     59 #undef GL_ENTRY
     60 #undef EGL_ENTRY
     61 #define GL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
     62 #define EGL_ENTRY(_r, _api, ...) _r (*_api)(__VA_ARGS__);
     63 
     64 struct egl_t {
     65     #include "EGL/egl_entries.in"
     66 };
     67 
     68 struct gl_hooks_t {
     69     struct gl_t {
     70         #include "entries.in"
     71     } gl;
     72     struct gl_ext_t {
     73         __eglMustCastToProperFunctionPointerType extensions[MAX_NUMBER_OF_GL_EXTENSIONS];
     74     } ext;
     75 };
     76 #undef GL_ENTRY
     77 #undef EGL_ENTRY
     78 
     79 EGLAPI void setGlThreadSpecific(gl_hooks_t const *value);
     80 EGLAPI gl_hooks_t const* getGlThreadSpecific();
     81 
     82 // ----------------------------------------------------------------------------
     83 }; // namespace android
     84 // ----------------------------------------------------------------------------
     85 
     86 #endif /* ANDROID_GLES_CM_HOOKS_H */
     87