140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
/*
|
|
** 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 <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
#include <GLES/gl.h>
|
|
#include <GLES/glext.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_DRIVERS_IMPLEMENTATIONS,
|
|
|
|
IMPL_CONTEXT_LOST = IMPL_NUM_DRIVERS_IMPLEMENTATIONS,
|
|
IMPL_NO_CONTEXT,
|
|
|
|
IMPL_NUM_IMPLEMENTATIONS
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// 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 gl_hooks_t {
|
|
struct gl_t {
|
|
#include "gl_entries.in"
|
|
#include "glext_entries.in"
|
|
} gl;
|
|
struct egl_t {
|
|
#include "egl_entries.in"
|
|
} egl;
|
|
struct gl_ext_t {
|
|
void (*extensions[MAX_NUMBER_OF_GL_EXTENSIONS])(void);
|
|
} ext;
|
|
};
|
|
#undef GL_ENTRY
|
|
#undef EGL_ENTRY
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
extern gl_hooks_t gHooks[IMPL_NUM_IMPLEMENTATIONS];
|
|
extern pthread_key_t gGLWrapperKey;
|
|
|
|
#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 &gHooks[IMPL_NO_CONTEXT];
|
|
}
|
|
|
|
#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 &gHooks[IMPL_NO_CONTEXT];
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
}; // namespace android
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#endif /* ANDROID_GLES_CM_HOOKS_H */
|