Loader.cpp revision acdebe352dc7dadc1122a87d45137fd2441b329a
1f6747b0b90b3a270ec7b7bdfdc211cf5c19f28c2robertphillips@google.com/* 2f6747b0b90b3a270ec7b7bdfdc211cf5c19f28c2robertphillips@google.com ** Copyright 2007, The Android Open Source Project 3f6747b0b90b3a270ec7b7bdfdc211cf5c19f28c2robertphillips@google.com ** 4f6747b0b90b3a270ec7b7bdfdc211cf5c19f28c2robertphillips@google.com ** Licensed under the Apache License, Version 2.0 (the "License"); 5f6747b0b90b3a270ec7b7bdfdc211cf5c19f28c2robertphillips@google.com ** you may not use this file except in compliance with the License. 6977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** You may obtain a copy of the License at 7977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** 8977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** http://www.apache.org/licenses/LICENSE-2.0 9977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** 10977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** Unless required by applicable law or agreed to in writing, software 11977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** distributed under the License is distributed on an "AS IS" BASIS, 12977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com ** See the License for the specific language governing permissions and 14977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com ** limitations under the License. 154d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com */ 164d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com 174d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com#include <ctype.h> 184d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com#include <stdlib.h> 19977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com#include <stdio.h> 204e23068b374023d43c4c725138d523721d975892bsalomon@google.com#include <string.h> 21594dd3cd78e2f970d53bb0934fbbb63b41e1d40ccaryclark@google.com#include <errno.h> 224e23068b374023d43c4c725138d523721d975892bsalomon@google.com#include <dlfcn.h> 232ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org#include <limits.h> 242ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 252ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org#include <cutils/log.h> 262ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 272ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org#include <EGL/egl.h> 282ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 292ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org#include "hooks.h" 302ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org#include "egl_impl.h" 314d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com 3286b0de4745a8a8317b54f23878498633b9210a8fcommit-bot@chromium.org#include "Loader.h" 33b74af872cc1ce45768df3ae03fa86ad3ed76b582robertphillips@google.com 34b74af872cc1ce45768df3ae03fa86ad3ed76b582robertphillips@google.com// ---------------------------------------------------------------------------- 3597fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.comnamespace android { 364d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com// ---------------------------------------------------------------------------- 374d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com 38ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 394d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com/* 4097fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.com * EGL drivers are called 4197fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.com * 424d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com * /system/lib/egl/lib{[EGL|GLESv1_CM|GLESv2] | GLES}_$TAG.so 43ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org * 444d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com */ 45ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 464d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.comANDROID_SINGLETON_STATIC_INSTANCE( Loader ) 474d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com 484d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com// ---------------------------------------------------------------------------- 492ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 501b81877880253c75f835eede9a8ee21b9e7b584amtkleinLoader::driver_t::driver_t(void* gles) 51ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org{ 524d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com dso[0] = gles; 534d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com for (size_t i=1 ; i<NELEM(dso) ; i++) 541b81877880253c75f835eede9a8ee21b9e7b584amtklein dso[i] = 0; 552ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org} 562ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 572ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.orgLoader::driver_t::~driver_t() 58e0e385c1d4171e065348ba17c546b3463a0bd651sugoi@google.com{ 59ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org for (size_t i=0 ; i<NELEM(dso) ; i++) { 604d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com if (dso[i]) { 614d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com dlclose(dso[i]); 624d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com dso[i] = 0; 63ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org } 64ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org } 65ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org} 66ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 67ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.orgstatus_t Loader::driver_t::set(void* hnd, int32_t api) 68ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org{ 69ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org switch (api) { 70ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org case EGL: 712ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org dso[0] = hnd; 722ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org break; 73ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org case GLESv1_CM: 744d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com dso[1] = hnd; 754d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com break; 76d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman case GLESv2: 77d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman dso[2] = hnd; 78d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman break; 792ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org default: 80d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman return BAD_INDEX; 81d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman } 82d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman return NO_ERROR; 83d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman} 842ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org 852ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org// ---------------------------------------------------------------------------- 864d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com 874d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.comLoader::entry_t::entry_t(int dpy, int impl, const char* tag) 884da34e36cb7a07c3a28ae2a135b1837c26fc7aeabsalomon@google.com : dpy(dpy), impl(impl), tag(tag) { 89ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org} 904da34e36cb7a07c3a28ae2a135b1837c26fc7aeabsalomon@google.com 914da34e36cb7a07c3a28ae2a135b1837c26fc7aeabsalomon@google.com// ---------------------------------------------------------------------------- 9297fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.com 9323579275c7f544763d074d90563c4b1e567ab041robertphillips@google.comLoader::Loader() 9497fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.com{ 9597fafe1b5ec06b470d36ea5cd98fe7bf2c143491robertphillips@google.com char line[256]; 9623579275c7f544763d074d90563c4b1e567ab041robertphillips@google.com char tag[256]; 97ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org FILE* cfg = fopen("/system/lib/egl/egl.cfg", "r"); 9873e19fb1ba2562048c6987272c8d73eee6a44242reed@google.com if (cfg == NULL) { 9915e9d3e66e161ce23df30bc13f8a0c87d196b463robertphillips@google.com // default config 100ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org LOGD("egl.cfg not found, using default config"); 1014d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com gConfig.add( entry_t(0, 0, "android") ); 102ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org } else { 103ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org while (fgets(line, 256, cfg)) { 10423579275c7f544763d074d90563c4b1e567ab041robertphillips@google.com int dpy; 1052ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org int impl; 106ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org if (sscanf(line, "%u %u %s", &dpy, &impl, tag) == 3) { 107ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org LOGD(">>> %u %u %s", dpy, impl, tag); 108ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org gConfig.add( entry_t(dpy, impl, tag) ); 10973e19fb1ba2562048c6987272c8d73eee6a44242reed@google.com } 110ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org } 1114d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com fclose(cfg); 11273e19fb1ba2562048c6987272c8d73eee6a44242reed@google.com } 113b74af872cc1ce45768df3ae03fa86ad3ed76b582robertphillips@google.com} 11473e19fb1ba2562048c6987272c8d73eee6a44242reed@google.com 11573e19fb1ba2562048c6987272c8d73eee6a44242reed@google.comLoader::~Loader() 11623579275c7f544763d074d90563c4b1e567ab041robertphillips@google.com{ 117ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org} 118ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 11923579275c7f544763d074d90563c4b1e567ab041robertphillips@google.comconst char* Loader::getTag(int dpy, int impl) 120ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org{ 1214d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com const Vector<entry_t>& cfgs(gConfig); 1224d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com const size_t c = cfgs.size(); 123ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org for (size_t i=0 ; i<c ; i++) { 1242ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org if (dpy == cfgs[i].dpy) 1252ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org if (impl == cfgs[i].impl) 1262ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org return cfgs[i].tag.string(); 1272ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org } 1282ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org return 0; 1292ab1ba055536825552d6b49f0210c4e1531f02f0commit-bot@chromium.org} 130ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 1314d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.comvoid* Loader::open(EGLNativeDisplayType display, int impl, gl_hooks_t* hooks) 132977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com{ 133977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com /* 134977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com * TODO: if we don't find display/0, then use 0/0 135ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org * (0/0 should always work) 136ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org */ 137ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 138ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org void* dso; 139ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org char path[PATH_MAX]; 140ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org int index = int(display); 141ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org driver_t* hnd = 0; 142ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org const char* const format = "egl/lib%s_%s.so"; 143ab1c13864df34aecfd4840ea7d1e4f8730b44f4ecommit-bot@chromium.org 1444d73ac22a1b99402fc8cff78a4eb4b27aa8fe019robertphillips@google.com char const* tag = getTag(index, impl); 1454fa9c9f9b42c22bffff3b2eb3fcf7f16a2ab2948robertphillips@google.com if (tag) { 146977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com snprintf(path, PATH_MAX, format, "GLES", tag); 147977b9c8af3ef1b9a2fa2a0037cf3734cf2ba13d9robertphillips@google.com dso = load_driver(path, hooks, EGL | GLESv1_CM | GLESv2); 148 if (dso) { 149 hnd = new driver_t(dso); 150 } else { 151 // Always load EGL first 152 snprintf(path, PATH_MAX, "lib%s_%s.so", "EGL", tag); 153 dso = load_driver(path, hooks, EGL); 154 if (dso) { 155 hnd = new driver_t(dso); 156 157 // TODO: make this more automated 158 snprintf(path, PATH_MAX, format, "GLESv1_CM", tag); 159 hnd->set( load_driver(path, hooks, GLESv1_CM), GLESv1_CM ); 160 161 snprintf(path, PATH_MAX, format, "GLESv2", tag); 162 hnd->set( load_driver(path, hooks, GLESv2), GLESv2 ); 163 } 164 } 165 } 166 167 LOG_FATAL_IF(!index && !impl && !hnd, 168 "couldn't find the default OpenGL ES implementation " 169 "for default display"); 170 171 return (void*)hnd; 172} 173 174status_t Loader::close(void* driver) 175{ 176 driver_t* hnd = (driver_t*)driver; 177 delete hnd; 178 return NO_ERROR; 179} 180 181void Loader::init_api(void* dso, 182 char const * const * api, 183 __eglMustCastToProperFunctionPointerType* curr, 184 getProcAddressType getProcAddress) 185{ 186 char scrap[256]; 187 while (*api) { 188 char const * name = *api; 189 __eglMustCastToProperFunctionPointerType f = 190 (__eglMustCastToProperFunctionPointerType)dlsym(dso, name); 191 if (f == NULL) { 192 // couldn't find the entry-point, use eglGetProcAddress() 193 f = getProcAddress(name); 194 } 195 if (f == NULL) { 196 // Try without the OES postfix 197 ssize_t index = ssize_t(strlen(name)) - 3; 198 if ((index>0 && (index<255)) && (!strcmp(name+index, "OES"))) { 199 strncpy(scrap, name, index); 200 scrap[index] = 0; 201 f = (__eglMustCastToProperFunctionPointerType)dlsym(dso, scrap); 202 //LOGD_IF(f, "found <%s> instead", scrap); 203 } 204 } 205 if (f == NULL) { 206 // Try with the OES postfix 207 ssize_t index = ssize_t(strlen(name)) - 3; 208 if ((index>0 && (index<252)) && (strcmp(name+index, "OES"))) { 209 strncpy(scrap, name, index); 210 scrap[index] = 0; 211 strcat(scrap, "OES"); 212 f = (__eglMustCastToProperFunctionPointerType)dlsym(dso, scrap); 213 //LOGD_IF(f, "found <%s> instead", scrap); 214 } 215 } 216 if (f == NULL) { 217 //LOGD("%s", name); 218 f = (__eglMustCastToProperFunctionPointerType)gl_unimplemented; 219 } 220 *curr++ = f; 221 api++; 222 } 223} 224 225void *Loader::load_driver(const char* driver, gl_hooks_t* hooks, uint32_t mask) 226{ 227 //LOGD("%s", driver); 228 void* dso = dlopen(driver, RTLD_NOW | RTLD_LOCAL); 229 LOGE_IF(!dso, "%s", dlerror()); 230 if (dso == 0) 231 return 0; 232 233 if (mask & EGL) { 234 getProcAddress = (getProcAddressType)dlsym(dso, "eglGetProcAddress"); 235 236 LOGE_IF(!getProcAddress, 237 "can't find eglGetProcAddress() in %s", driver); 238 239 gl_hooks_t::egl_t* egl = &hooks->egl; 240 __eglMustCastToProperFunctionPointerType* curr = 241 (__eglMustCastToProperFunctionPointerType*)egl; 242 char const * const * api = egl_names; 243 while (*api) { 244 char const * name = *api; 245 __eglMustCastToProperFunctionPointerType f = 246 (__eglMustCastToProperFunctionPointerType)dlsym(dso, name); 247 if (f == NULL) { 248 // couldn't find the entry-point, use eglGetProcAddress() 249 f = getProcAddress(name); 250 if (f == NULL) { 251 f = (__eglMustCastToProperFunctionPointerType)0; 252 } 253 } 254 *curr++ = f; 255 api++; 256 } 257 } 258 259 if (mask & GLESv1_CM) { 260 init_api(dso, gl_names, 261 (__eglMustCastToProperFunctionPointerType*)&hooks->gl, 262 getProcAddress); 263 } 264 265 if (mask & GLESv2) { 266 init_api(dso, gl2_names, 267 (__eglMustCastToProperFunctionPointerType*)&hooks->gl2, 268 getProcAddress); 269 } 270 271 return dso; 272} 273 274// ---------------------------------------------------------------------------- 275}; // namespace android 276// ---------------------------------------------------------------------------- 277