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80 lines
2.5 KiB
80 lines
2.5 KiB
// Copyright 2020 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "EmuglBackendScanner.h"
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#include "base/StringFormat.h"
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#include "base/System.h"
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#include <algorithm>
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#include <string>
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#include <vector>
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namespace android {
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namespace opengl {
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using android::base::StringFormat;
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// static
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std::vector<std::string> EmuglBackendScanner::scanDir(const char* execDir,
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int programBitness) {
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std::vector<std::string> names;
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if (!execDir) {
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fpritnf(stderr, "%s: invalid exec dir: %s\n", __func__, execDir);
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return names;
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}
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if (!programBitness) {
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programBitness = System::get()->getProgramBitness();
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}
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const char* subdir = (programBitness == 64) ? "lib64" : "lib";
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std::string subDir = StringFormat("%s" PATH_SEP "%s" PATH_SEP, execDir, subdir);
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std::vector<std::string> entries = System::get()->scanDirEntries(subDir);
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static const char kBackendPrefix[] = "gles_";
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const size_t kBackendPrefixSize = sizeof(kBackendPrefix) - 1U;
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for (size_t n = 0; n < entries.size(); ++n) {
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const std::string& entry = entries[n];
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if (entry.size() <= kBackendPrefixSize ||
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memcmp(entry.c_str(), kBackendPrefix, kBackendPrefixSize)) {
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continue;
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}
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// Check that it is a directory.
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std::string full_dir = StringFormat("%s" PATH_SEP "%s", subDir.c_str(), entry.c_str());
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if (!System::get()->pathIsDir(full_dir)) {
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continue;
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}
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names.push_back(std::string(entry.c_str() + kBackendPrefixSize));
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if (!strcmp(entry.c_str() + kBackendPrefixSize, "angle")) {
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names.push_back("angle_indirect");
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}
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if (!strcmp(entry.c_str() + kBackendPrefixSize, "swiftshader")) {
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names.push_back("swiftshader_indirect");
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}
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}
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// Need to sort the backends in consistent order.
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std::sort(names.begin(), names.end());
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return names;
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}
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} // namespace opengl
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} // namespace android
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