/* ** 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 <pthread.h> #include <EGL/egl.h> #include <EGL/eglext.h> #include <GLES/gl.h> #include <GLES/glext.h> #include <GLES2/gl2.h> #include <GLES2/gl2ext.h> #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 && __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_NUM_IMPLEMENTATIONS }; enum { GLESv1_INDEX = 0, GLESv2_INDEX = 1, }; // ---------------------------------------------------------------------------- // 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 egl_t { #include "EGL/egl_entries.in" }; struct gl_hooks_t { struct gl_t { #include "entries.in" } gl; struct gl_ext_t { void (*extensions[MAX_NUMBER_OF_GL_EXTENSIONS])(void); } ext; }; #undef GL_ENTRY #undef EGL_ENTRY // ---------------------------------------------------------------------------- extern gl_hooks_t gHooks[2][IMPL_NUM_IMPLEMENTATIONS]; extern gl_hooks_t gHooksNoContext; extern pthread_key_t gGLWrapperKey; extern "C" void gl_unimplemented(); extern char const * const gl_names[]; extern char const * const egl_names[]; // ---------------------------------------------------------------------------- #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 &gHooksNoContext; } #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 &gHooksNoContext; } #endif // ---------------------------------------------------------------------------- }; // namespace android // ---------------------------------------------------------------------------- #endif /* ANDROID_GLES_CM_HOOKS_H */