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Diffstat (limited to 'opengl/libs/EGL/Loader.cpp')
| -rw-r--r-- | opengl/libs/EGL/Loader.cpp | 322 |
1 files changed, 0 insertions, 322 deletions
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp deleted file mode 100644 index 0b1016c..0000000 --- a/opengl/libs/EGL/Loader.cpp +++ /dev/null @@ -1,322 +0,0 @@ -/* - ** 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. - */ - -#include <ctype.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <dlfcn.h> -#include <limits.h> - -#include <cutils/log.h> -#include <cutils/properties.h> - -#include <EGL/egl.h> - -#include "egldefs.h" -#include "glestrace.h" -#include "hooks.h" -#include "Loader.h" - -// ---------------------------------------------------------------------------- -namespace android { -// ---------------------------------------------------------------------------- - - -/* - * EGL drivers are called - * - * /system/lib/egl/lib{[EGL|GLESv1_CM|GLESv2] | GLES}_$TAG.so - * - */ - -ANDROID_SINGLETON_STATIC_INSTANCE( Loader ) - -/* This function is called to check whether we run inside the emulator, - * and if this is the case whether GLES GPU emulation is supported. - * - * Returned values are: - * -1 -> not running inside the emulator - * 0 -> running inside the emulator, but GPU emulation not supported - * 1 -> running inside the emulator, GPU emulation is supported - * through the "emulation" config. - */ -static int -checkGlesEmulationStatus(void) -{ - /* We're going to check for the following kernel parameters: - * - * qemu=1 -> tells us that we run inside the emulator - * android.qemu.gles=<number> -> tells us the GLES GPU emulation status - * - * Note that we will return <number> if we find it. This let us support - * more additionnal emulation modes in the future. - */ - char prop[PROPERTY_VALUE_MAX]; - int result = -1; - - /* First, check for qemu=1 */ - property_get("ro.kernel.qemu",prop,"0"); - if (atoi(prop) != 1) - return -1; - - /* We are in the emulator, get GPU status value */ - property_get("ro.kernel.qemu.gles",prop,"0"); - return atoi(prop); -} - -// ---------------------------------------------------------------------------- - -Loader::driver_t::driver_t(void* gles) -{ - dso[0] = gles; - for (size_t i=1 ; i<NELEM(dso) ; i++) - dso[i] = 0; -} - -Loader::driver_t::~driver_t() -{ - for (size_t i=0 ; i<NELEM(dso) ; i++) { - if (dso[i]) { - dlclose(dso[i]); - dso[i] = 0; - } - } -} - -status_t Loader::driver_t::set(void* hnd, int32_t api) -{ - switch (api) { - case EGL: - dso[0] = hnd; - break; - case GLESv1_CM: - dso[1] = hnd; - break; - case GLESv2: - dso[2] = hnd; - break; - default: - return BAD_INDEX; - } - return NO_ERROR; -} - -// ---------------------------------------------------------------------------- - -Loader::Loader() -{ - char line[256]; - char tag[256]; - - /* Special case for GLES emulation */ - if (checkGlesEmulationStatus() == 0) { - ALOGD("Emulator without GPU support detected. " - "Fallback to software renderer."); - mDriverTag.setTo("android"); - return; - } - - /* Otherwise, use egl.cfg */ - FILE* cfg = fopen("/system/lib/egl/egl.cfg", "r"); - if (cfg == NULL) { - // default config - ALOGD("egl.cfg not found, using default config"); - mDriverTag.setTo("android"); - } else { - while (fgets(line, 256, cfg)) { - int dpy, impl; - if (sscanf(line, "%u %u %s", &dpy, &impl, tag) == 3) { - //ALOGD(">>> %u %u %s", dpy, impl, tag); - // We only load the h/w accelerated implementation - if (tag != String8("android")) { - mDriverTag = tag; - } - } - } - fclose(cfg); - } -} - -Loader::~Loader() -{ - GLTrace_stop(); -} - -void* Loader::open(egl_connection_t* cnx) -{ - void* dso; - driver_t* hnd = 0; - - char const* tag = mDriverTag.string(); - if (tag) { - dso = load_driver("GLES", tag, cnx, EGL | GLESv1_CM | GLESv2); - if (dso) { - hnd = new driver_t(dso); - } else { - // Always load EGL first - dso = load_driver("EGL", tag, cnx, EGL); - if (dso) { - hnd = new driver_t(dso); - // TODO: make this more automated - hnd->set( load_driver("GLESv1_CM", tag, cnx, GLESv1_CM), GLESv1_CM ); - hnd->set( load_driver("GLESv2", tag, cnx, GLESv2), GLESv2 ); - } - } - } - - LOG_FATAL_IF(!index && !hnd, - "couldn't find the default OpenGL ES implementation " - "for default display"); - - return (void*)hnd; -} - -status_t Loader::close(void* driver) -{ - driver_t* hnd = (driver_t*)driver; - delete hnd; - return NO_ERROR; -} - -void Loader::init_api(void* dso, - char const * const * api, - __eglMustCastToProperFunctionPointerType* curr, - getProcAddressType getProcAddress) -{ - const ssize_t SIZE = 256; - char scrap[SIZE]; - while (*api) { - char const * name = *api; - __eglMustCastToProperFunctionPointerType f = - (__eglMustCastToProperFunctionPointerType)dlsym(dso, name); - if (f == NULL) { - // couldn't find the entry-point, use eglGetProcAddress() - f = getProcAddress(name); - } - if (f == NULL) { - // Try without the OES postfix - ssize_t index = ssize_t(strlen(name)) - 3; - if ((index>0 && (index<SIZE-1)) && (!strcmp(name+index, "OES"))) { - strncpy(scrap, name, index); - scrap[index] = 0; - f = (__eglMustCastToProperFunctionPointerType)dlsym(dso, scrap); - //ALOGD_IF(f, "found <%s> instead", scrap); - } - } - if (f == NULL) { - // Try with the OES postfix - ssize_t index = ssize_t(strlen(name)) - 3; - if (index>0 && strcmp(name+index, "OES")) { - snprintf(scrap, SIZE, "%sOES", name); - f = (__eglMustCastToProperFunctionPointerType)dlsym(dso, scrap); - //ALOGD_IF(f, "found <%s> instead", scrap); - } - } - if (f == NULL) { - //ALOGD("%s", name); - f = (__eglMustCastToProperFunctionPointerType)gl_unimplemented; - - /* - * GL_EXT_debug_label is special, we always report it as - * supported, it's handled by GLES_trace. If GLES_trace is not - * enabled, then these are no-ops. - */ - if (!strcmp(name, "glInsertEventMarkerEXT")) { - f = (__eglMustCastToProperFunctionPointerType)gl_noop; - } else if (!strcmp(name, "glPushGroupMarkerEXT")) { - f = (__eglMustCastToProperFunctionPointerType)gl_noop; - } else if (!strcmp(name, "glPopGroupMarkerEXT")) { - f = (__eglMustCastToProperFunctionPointerType)gl_noop; - } - } - *curr++ = f; - api++; - } -} - -void *Loader::load_driver(const char* kind, const char *tag, - egl_connection_t* cnx, uint32_t mask) -{ - char driver_absolute_path[PATH_MAX]; - const char* const search1 = "/vendor/lib/egl/lib%s_%s.so"; - const char* const search2 = "/system/lib/egl/lib%s_%s.so"; - - snprintf(driver_absolute_path, PATH_MAX, search1, kind, tag); - if (access(driver_absolute_path, R_OK)) { - snprintf(driver_absolute_path, PATH_MAX, search2, kind, tag); - if (access(driver_absolute_path, R_OK)) { - // this happens often, we don't want to log an error - return 0; - } - } - - void* dso = dlopen(driver_absolute_path, RTLD_NOW | RTLD_LOCAL); - if (dso == 0) { - const char* err = dlerror(); - ALOGE("load_driver(%s): %s", driver_absolute_path, err?err:"unknown"); - return 0; - } - - ALOGD("loaded %s", driver_absolute_path); - - if (mask & EGL) { - getProcAddress = (getProcAddressType)dlsym(dso, "eglGetProcAddress"); - - ALOGE_IF(!getProcAddress, - "can't find eglGetProcAddress() in %s", driver_absolute_path); - - egl_t* egl = &cnx->egl; - __eglMustCastToProperFunctionPointerType* curr = - (__eglMustCastToProperFunctionPointerType*)egl; - char const * const * api = egl_names; - while (*api) { - char const * name = *api; - __eglMustCastToProperFunctionPointerType f = - (__eglMustCastToProperFunctionPointerType)dlsym(dso, name); - if (f == NULL) { - // couldn't find the entry-point, use eglGetProcAddress() - f = getProcAddress(name); - if (f == NULL) { - f = (__eglMustCastToProperFunctionPointerType)0; - } - } - *curr++ = f; - api++; - } - } - - if (mask & GLESv1_CM) { - init_api(dso, gl_names, - (__eglMustCastToProperFunctionPointerType*) - &cnx->hooks[egl_connection_t::GLESv1_INDEX]->gl, - getProcAddress); - } - - if (mask & GLESv2) { - init_api(dso, gl_names, - (__eglMustCastToProperFunctionPointerType*) - &cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl, - getProcAddress); - } - - return dso; -} - -// ---------------------------------------------------------------------------- -}; // namespace android -// ---------------------------------------------------------------------------- |