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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/client/client_discardable_texture_manager.h"
#include "base/containers/contains.h"
namespace gpu {
ClientDiscardableTextureManager::TextureEntry::TextureEntry(
ClientDiscardableHandle::Id id)
: id(id) {}
ClientDiscardableTextureManager::TextureEntry::TextureEntry(
const TextureEntry& other) = default;
ClientDiscardableTextureManager::TextureEntry&
ClientDiscardableTextureManager::TextureEntry::operator=(
const TextureEntry& other) = default;
ClientDiscardableTextureManager::ClientDiscardableTextureManager() = default;
ClientDiscardableTextureManager::~ClientDiscardableTextureManager() = default;
ClientDiscardableHandle ClientDiscardableTextureManager::InitializeTexture(
CommandBuffer* command_buffer,
uint32_t texture_id) {
base::AutoLock hold(lock_);
DCHECK(!base::Contains(texture_entries_, texture_id));
ClientDiscardableHandle::Id handle_id =
discardable_manager_.CreateHandle(command_buffer);
if (handle_id.is_null())
return ClientDiscardableHandle();
// We must have a valid handle here, since the id was generated above and
// should be in locked state.
texture_entries_.emplace(texture_id, TextureEntry(handle_id));
return discardable_manager_.GetHandle(handle_id);
}
bool ClientDiscardableTextureManager::LockTexture(uint32_t texture_id) {
base::AutoLock hold(lock_);
auto found = texture_entries_.find(texture_id);
if (found == texture_entries_.end())
return false;
TextureEntry& entry = found->second;
if (!discardable_manager_.LockHandle(entry.id)) {
DCHECK_EQ(0u, entry.client_lock_count);
return false;
}
++entry.client_lock_count;
return true;
}
void ClientDiscardableTextureManager::UnlockTexture(
uint32_t texture_id,
bool* should_unbind_texture) {
base::AutoLock hold(lock_);
auto found = texture_entries_.find(texture_id);
DCHECK(found != texture_entries_.end());
TextureEntry& entry = found->second;
DCHECK_GT(entry.client_lock_count, 0u);
--entry.client_lock_count;
*should_unbind_texture = (0u == entry.client_lock_count);
}
void ClientDiscardableTextureManager::FreeTexture(uint32_t texture_id) {
base::AutoLock hold(lock_);
auto found = texture_entries_.find(texture_id);
if (found == texture_entries_.end())
return;
ClientDiscardableHandle::Id discardable_id = found->second.id;
texture_entries_.erase(found);
return discardable_manager_.FreeHandle(discardable_id);
}
bool ClientDiscardableTextureManager::TextureIsValid(
uint32_t texture_id) const {
base::AutoLock hold(lock_);
return base::Contains(texture_entries_, texture_id);
}
bool ClientDiscardableTextureManager::TextureIsDeletedForTracing(
uint32_t texture_id) const {
base::AutoLock hold(lock_);
auto found = texture_entries_.find(texture_id);
if (found == texture_entries_.end())
return true;
return discardable_manager_.HandleIsDeletedForTracing(found->second.id);
}
ClientDiscardableHandle ClientDiscardableTextureManager::GetHandleForTesting(
uint32_t texture_id) {
base::AutoLock hold(lock_);
auto found = texture_entries_.find(texture_id);
DCHECK(found != texture_entries_.end());
return discardable_manager_.GetHandle(found->second.id);
}
} // namespace gpu
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