PassRefPtr<BitmapTexture> BitmapTexturePool::acquireTexture(const IntSize& size, TextureMapper* textureMapper)
{
BitmapTexturePoolEntry* selectedEntry = 0;
for (size_t i = 0; i < m_textures.size(); ++i) {
BitmapTexturePoolEntry* entry = &m_textures[i];
// If the surface has only one reference (the one in m_textures), we can safely reuse it.
if (entry->m_texture->refCount() > 1)
continue;
if (entry->m_texture->canReuseWith(size)) {
selectedEntry = entry;
break;
}
}
if (!selectedEntry) {
m_textures.append(BitmapTexturePoolEntry(textureMapper->createTexture()));
selectedEntry = &m_textures.last();
}
scheduleReleaseUnusedTextures();
selectedEntry->markUsed();
return selectedEntry->m_texture;
}
void BitmapTexturePool::releaseUnusedTexturesTimerFired()
{
// Delete entries, which have been unused in s_releaseUnusedSecondsTolerance.
double minUsedTime = monotonicallyIncreasingTime() - s_releaseUnusedSecondsTolerance;
if (!m_textures.isEmpty()) {
std::sort(m_textures.begin(), m_textures.end(),
[](const Entry& a, const Entry& b) { return a.m_lastUsedTime > b.m_lastUsedTime; });
for (size_t i = 0; i < m_textures.size(); ++i) {
if (m_textures[i].m_lastUsedTime < minUsedTime) {
m_textures.remove(i, m_textures.size() - i);
break;
}
}
}
if (!m_attachmentTextures.isEmpty()) {
std::sort(m_attachmentTextures.begin(), m_attachmentTextures.end(),
[](const Entry& a, const Entry& b) { return a.m_lastUsedTime > b.m_lastUsedTime; });
for (size_t i = 0; i < m_attachmentTextures.size(); ++i) {
if (m_attachmentTextures[i].m_lastUsedTime < minUsedTime) {
m_attachmentTextures.remove(i, m_attachmentTextures.size() - i);
break;
}
}
}
if (!m_textures.isEmpty() || !m_attachmentTextures.isEmpty())
scheduleReleaseUnusedTextures();
}
RefPtr<BitmapTexture> BitmapTexturePool::acquireTexture(const IntSize& size, const BitmapTexture::Flags flags)
{
Vector<Entry>& list = flags & BitmapTexture::FBOAttachment ? m_attachmentTextures : m_textures;
Entry* selectedEntry = std::find_if(list.begin(), list.end(),
[&size](Entry& entry) { return entry.m_texture->refCount() == 1 && entry.m_texture->size() == size; });
if (selectedEntry == list.end()) {
list.append(Entry(createTexture(flags)));
selectedEntry = &list.last();
}
scheduleReleaseUnusedTextures();
selectedEntry->markIsInUse();
return selectedEntry->m_texture.copyRef();
}
PassRefPtr<BitmapTexture> BitmapTexturePool::acquireTexture(const IntSize& size)
{
BitmapTexturePoolEntry* selectedEntry = 0;
for (auto& entry : m_textures) {
// If the surface has only one reference (the one in m_textures), we can safely reuse it.
if (entry.m_texture->refCount() > 1)
continue;
if (entry.m_texture->size() == size) {
selectedEntry = &entry;
break;
}
}
if (!selectedEntry) {
m_textures.append(BitmapTexturePoolEntry(createTexture()));
selectedEntry = &m_textures.last();
}
scheduleReleaseUnusedTextures();
selectedEntry->markUsed();
return selectedEntry->m_texture;
}
