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/*
* Copyright (C) 2010 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_UI_EXTENSIONS_H
#define ANDROID_UI_EXTENSIONS_H
#include <utils/SortedVector.h>
#include <utils/String8.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
namespace android {
namespace uirenderer {
class Extensions {
public:
Extensions() {
const char* buffer = (const char*) glGetString(GL_EXTENSIONS);
const char* current = buffer;
const char* head = current;
do {
head = strchr(current, ' ');
String8 s(current, head ? head - current : strlen(current));
if (s.length()) {
mExtensionList.add(s);
}
current = head + 1;
} while (head);
mHasNPot = hasExtension("GL_OES_texture_npot");
mHasDrawPath = hasExtension("GL_NV_draw_path");
mHasCoverageSample = hasExtension("GL_NV_coverage_sample");
mExtensions = buffer;
}
inline bool hasNPot() const { return mHasNPot; }
inline bool hasDrawPath() const { return mHasDrawPath; }
inline bool hasCoverageSample() const { return mHasCoverageSample; }
bool hasExtension(const char* extension) const {
const String8 s(extension);
return mExtensionList.indexOf(s) >= 0;
}
void dump() {
LOGD("Supported extensions:\n%s", mExtensions);
}
private:
SortedVector<String8> mExtensionList;
const char* mExtensions;
bool mHasNPot;
bool mHasDrawPath;
bool mHasCoverageSample;
}; // class Extensions
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_UI_EXTENSIONS_H
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