From 5541988578054345ca70b7ed7972710396e61b44 Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Mon, 28 Sep 2009 17:25:48 +0800 Subject: [PATCH] egl: Add support for driver built-in. This allows an EGL driver to be compiled together with libEGL.so. It eliminates the need to specify a driver, or support module loading on new platforms. Signed-off-by: Chia-I Wu --- src/egl/main/egldriver.c | 157 +++++++++++++++++++++++---------------- src/egl/main/egllog.c | 4 - 2 files changed, 93 insertions(+), 68 deletions(-) diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c index 87786e36bbf..0c76c799738 100644 --- a/src/egl/main/egldriver.c +++ b/src/egl/main/egldriver.c @@ -22,59 +22,70 @@ #if defined(_EGL_PLATFORM_X) #include -#elif defined(_EGL_PLATFORM_WINDOWS) -/* Use static linking on Windows for now */ -#define WINDOWS_STATIC_LINK #endif + /** * Wrappers for dlopen/dlclose() */ #if defined(_EGL_PLATFORM_WINDOWS) -#ifdef WINDOWS_STATIC_LINK - static const char *DefaultDriverName = "Windows EGL Static Library"; -#else - /* XXX Need to decide how to do dynamic name lookup on Windows */ - static const char *DefaultDriverName = "TBD"; -#endif - typedef HMODULE lib_handle; - - static HMODULE - open_library(const char *filename) - { -#ifdef WINDOWS_STATIC_LINK - return 0; -#else - return LoadLibrary(filename); -#endif - } - static void - close_library(HMODULE lib) - { -#ifdef WINDOWS_STATIC_LINK -#else - FreeLibrary(lib); -#endif - } + +/* XXX Need to decide how to do dynamic name lookup on Windows */ +static const char DefaultDriverName[] = "TBD"; + +typedef HMODULE lib_handle; + +static HMODULE +open_library(const char *filename) +{ + return LoadLibrary(filename); +} + +static void +close_library(HMODULE lib) +{ + FreeLibrary(lib); +} + #elif defined(_EGL_PLATFORM_X) - static const char *DefaultDriverName = "egl_softpipe"; - typedef void * lib_handle; - static void * - open_library(const char *filename) - { - return dlopen(filename, RTLD_LAZY); - } +static const char DefaultDriverName[] = "egl_softpipe"; + +typedef void * lib_handle; + +static void * +open_library(const char *filename) +{ + return dlopen(filename, RTLD_LAZY); +} + +static void +close_library(void *lib) +{ + dlclose(lib); +} + +#else /* _EGL_PLATFORM_NO_OS */ + +static const char DefaultDriverName[] = "builtin"; + +typedef void *lib_handle; + +static INLINE void * +open_library(const char *filename) +{ + return (void *) filename; +} + +static INLINE void +close_library(void *lib) +{ +} + - static void - close_library(void *lib) - { - dlclose(lib); - } - #endif @@ -95,14 +106,22 @@ _eglChooseDriver(_EGLDisplay *dpy, char **argsRet) path = _eglstrdup(path); #if defined(_EGL_PLATFORM_X) - if (!path && dpy->NativeDisplay) { + if (!path && dpy && dpy->NativeDisplay) { /* assume (wrongly!) that the native display is a display string */ path = _eglSplitDisplayString((const char *) dpy->NativeDisplay, &args); } suffix = "so"; #elif defined(_EGL_PLATFORM_WINDOWS) suffix = "dll"; -#endif /* _EGL_PLATFORM_X */ +#else /* _EGL_PLATFORM_NO_OS */ + if (path) { + /* force the use of the default driver */ + _eglLog(_EGL_DEBUG, "ignore EGL_DRIVER"); + free(path); + path = NULL; + } + suffix = NULL; +#endif if (!path) path = _eglstrdup(DefaultDriverName); @@ -136,43 +155,48 @@ _eglChooseDriver(_EGLDisplay *dpy, char **argsRet) static _EGLMain_t _eglOpenLibrary(const char *driverPath, lib_handle *handle) { - _EGLMain_t mainFunc; lib_handle lib; + _EGLMain_t mainFunc = NULL; + const char *error = "unknown error"; assert(driverPath); -#if defined(_EGL_PLATFORM_WINDOWS) -/* Use static linking on Windows for now */ -#ifdef WINDOWS_STATIC_LINK - lib = 0; - mainFunc = (_EGLMain_t)_eglMain; -#else - /* XXX untested */ _eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath); lib = open_library(driverPath); - if (!lib) { - _eglLog(_EGL_WARNING, "Could not open %s", - driverPath); - return NULL; + +#if defined(_EGL_PLATFORM_WINDOWS) + /* XXX untested */ + if (lib) + mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain"); +#elif defined(_EGL_PLATFORM_X) + if (lib) { + mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain"); + if (!mainFunc) + error = dlerror(); + } + else { + error = dlerror(); } - mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain"); +#else /* _EGL_PLATFORM_NO_OS */ + /* must be the default driver name */ + if (strcmp(driverPath, DefaultDriverName) == 0) + mainFunc = (_EGLMain_t) _eglMain; + else + error = "not builtin driver"; #endif -#elif defined(_EGL_PLATFORM_X) - _eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath); - lib = open_library(driverPath); + if (!lib) { - _eglLog(_EGL_WARNING, "Could not open %s (%s)", - driverPath, dlerror()); + _eglLog(_EGL_WARNING, "Could not open driver %s (%s)", + driverPath, error); if (!getenv("EGL_DRIVER")) _eglLog(_EGL_WARNING, "The driver can be overridden by setting EGL_DRIVER"); return NULL; } - mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain"); -#endif if (!mainFunc) { - _eglLog(_EGL_WARNING, "_eglMain not found in %s", driverPath); + _eglLog(_EGL_WARNING, "_eglMain not found in %s (%s)", + driverPath, error); if (lib) close_library(lib); return NULL; @@ -428,6 +452,11 @@ _eglFindAPIs(void) const char *es2_libname = "libGLESv2.so"; const char *gl_libname = "libGL.so"; const char *vg_libname = "libOpenVG.so"; +#else /* _EGL_PLATFORM_NO_OS */ + const char *es1_libname = NULL; + const char *es2_libname = NULL; + const char *gl_libname = NULL; + const char *vg_libname = NULL; #endif if ((lib = open_library(es1_libname))) { diff --git a/src/egl/main/egllog.c b/src/egl/main/egllog.c index 1d7a0a388c6..23eb523eebe 100644 --- a/src/egl/main/egllog.c +++ b/src/egl/main/egllog.c @@ -21,11 +21,7 @@ static EGLint ReportingLevel = -1; static void log_level_initialize(void) { -#if defined(_EGL_PLATFORM_X) char *log_env = getenv("EGL_LOG_LEVEL"); -#else - char *log_env = NULL; -#endif if (log_env == NULL) { ReportingLevel = FALLBACK_LOG_LEVEL; -- 2.30.2