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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "platform/graphics/MailboxTextureHolder.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "platform/CrossThreadFunctional.h"
#include "platform/graphics/SkiaTextureHolder.h"
#include "platform/graphics/gpu/SharedGpuContext.h"
#include "public/platform/Platform.h"
#include "skia/ext/texture_handle.h"
#include "third_party/skia/include/gpu/GrContext.h"
namespace blink {
namespace {
void releaseTexture(
bool isConvertedFromSkiaTexture,
unsigned textureId,
WeakPtr<WebGraphicsContext3DProviderWrapper> contextProvider,
std::unique_ptr<gpu::SyncToken> syncToken) {
if (!isConvertedFromSkiaTexture && textureId && contextProvider) {
contextProvider->contextProvider()->contextGL()->WaitSyncTokenCHROMIUM(
syncToken->GetData());
contextProvider->contextProvider()->contextGL()->DeleteTextures(1,
&textureId);
}
}
} // namespace
MailboxTextureHolder::MailboxTextureHolder(
const gpu::Mailbox& mailbox,
const gpu::SyncToken& syncToken,
unsigned textureIdToDeleteAfterMailboxConsumed,
WeakPtr<WebGraphicsContext3DProviderWrapper> contextProvider,
IntSize mailboxSize)
: m_mailbox(mailbox),
m_syncToken(syncToken),
m_textureId(textureIdToDeleteAfterMailboxConsumed),
m_contextProvider(contextProvider),
m_size(mailboxSize),
m_isConvertedFromSkiaTexture(false) {}
MailboxTextureHolder::MailboxTextureHolder(
std::unique_ptr<TextureHolder> textureHolder) {
DCHECK(textureHolder->isSkiaTextureHolder());
sk_sp<SkImage> image = textureHolder->skImage();
DCHECK(image);
gpu::gles2::GLES2Interface* sharedGL = SharedGpuContext::gl();
GrContext* sharedGrContext = SharedGpuContext::gr();
if (!sharedGrContext) {
// Can happen if the context is lost. The SkImage won't be any good now
// anyway.
return;
}
GLuint imageTextureId =
skia::GrBackendObjectToGrGLTextureInfo(image->getTextureHandle(true))
->fID;
sharedGL->BindTexture(GL_TEXTURE_2D, imageTextureId);
sharedGL->GenMailboxCHROMIUM(m_mailbox.name);
sharedGL->ProduceTextureCHROMIUM(GL_TEXTURE_2D, m_mailbox.name);
const GLuint64 fenceSync = sharedGL->InsertFenceSyncCHROMIUM();
sharedGL->Flush();
sharedGL->GenSyncTokenCHROMIUM(fenceSync, m_syncToken.GetData());
sharedGL->BindTexture(GL_TEXTURE_2D, 0);
// We changed bound textures in this function, so reset the GrContext.
sharedGrContext->resetContext(kTextureBinding_GrGLBackendState);
m_size = IntSize(image->width(), image->height());
m_textureId = imageTextureId;
m_isConvertedFromSkiaTexture = true;
}
MailboxTextureHolder::~MailboxTextureHolder() {
// Avoid leaking mailboxes in cases where the texture gets recycled by skia.
if (SharedGpuContext::isValid()) {
SharedGpuContext::gl()->ProduceTextureDirectCHROMIUM(0, GL_TEXTURE_2D,
m_mailbox.name);
}
releaseTextureThreadSafe();
}
void MailboxTextureHolder::releaseTextureThreadSafe() {
// If this member is still null, it means we are still at the thread where
// the m_texture was created.
std::unique_ptr<gpu::SyncToken> passedSyncToken(
new gpu::SyncToken(m_syncToken));
if (!wasTransferred()) {
releaseTexture(m_isConvertedFromSkiaTexture, m_textureId, m_contextProvider,
std::move(passedSyncToken));
} else if (wasTransferred() && textureThreadTaskRunner()) {
textureThreadTaskRunner()->postTask(
BLINK_FROM_HERE,
crossThreadBind(&releaseTexture, m_isConvertedFromSkiaTexture,
m_textureId, WTF::passed(std::move(m_contextProvider)),
WTF::passed(std::move(passedSyncToken))));
}
m_textureId = 0u; // invalidate the texture.
setWasTransferred(false);
setTextureThreadTaskRunner(nullptr);
}
unsigned MailboxTextureHolder::sharedContextId() {
return SharedGpuContext::kNoSharedContext;
}
} // namespace blink
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