Revert "Replaced blink sync points with new sync tokens."

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 294 matching lines @@
             m_context->discardFramebufferEXT(GL_FRAMEBUFFER, 3, attachments);
         }
     } else {
         m_context->copyTextureCHROMIUM(GL_TEXTURE_2D, m_colorBuffer.textureId, frontColorBufferMailbox->textureInfo.textureId, GL_RGBA, GL_UNSIGNED_BYTE, GL_FALSE, GL_FALSE, GL_FALSE);
     }
 
     restoreFramebufferBindings();
     m_contentsChanged = false;
 
     m_context->produceTextureDirectCHROMIUM(frontColorBufferMailbox->textureInfo.textureId, GL_TEXTURE_2D, frontColorBufferMailbox->mailbox.name);
-    const WGC3Duint64 fenceSync = m_context->insertFenceSyncCHROMIUM();
     m_context->flush();
-    frontColorBufferMailbox->mailbox.validSyncToken = m_context->genSyncTokenCHROMIUM(fenceSync, frontColorBufferMailbox->mailbox.syncToken);
+    frontColorBufferMailbox->mailbox.validSyncToken = m_context->insertSyncPoint(frontColorBufferMailbox->mailbox.syncToken);
     frontColorBufferMailbox->mailbox.allowOverlay = frontColorBufferMailbox->textureInfo.imageId != 0;
     setBufferClearNeeded(true);
 
     // set m_parentDrawingBuffer to make sure 'this' stays alive as long as it has live mailboxes
     ASSERT(!frontColorBufferMailbox->m_parentDrawingBuffer);
     frontColorBufferMailbox->m_parentDrawingBuffer = this;
     *outMailbox = frontColorBufferMailbox->mailbox;
     m_frontColorBuffer = { frontColorBufferMailbox->textureInfo, frontColorBufferMailbox->mailbox };
     return true;
 }
@@ skipping 44 matching lines @@
     RefPtr<MailboxInfo> mailboxInfo;
     for (size_t i = 0; i < m_textureMailboxes.size(); i++) {
         if (nameEquals(m_textureMailboxes[i]->mailbox, mailbox)) {
             mailboxInfo = m_textureMailboxes[i];
             break;
         }
     }
     ASSERT(mailboxInfo);
 
     if (mailboxInfo->mailbox.validSyncToken) {
-        m_context->waitSyncTokenCHROMIUM(mailboxInfo->mailbox.syncToken);
+        m_context->waitSyncToken(mailboxInfo->mailbox.syncToken);
         mailboxInfo->mailbox.validSyncToken = false;
     }
 
     if (mailboxInfo->size != m_size) {
         m_context->bindTexture(GL_TEXTURE_2D, mailboxInfo->textureInfo.textureId);
         allocateTextureMemory(&mailboxInfo->textureInfo, m_size);
         mailboxInfo->size = m_size;
     }
 
     return mailboxInfo.release();
 }
 
 PassRefPtr<DrawingBuffer::MailboxInfo> DrawingBuffer::createNewMailbox(const TextureInfo& info)
 {
     RefPtr<MailboxInfo> returnMailbox = adoptRef(new MailboxInfo());
     m_context->genMailboxCHROMIUM(returnMailbox->mailbox.name);
     returnMailbox->textureInfo = info;
     returnMailbox->size = m_size;
     m_textureMailboxes.append(returnMailbox);
     return returnMailbox.release();
 }
 
 void DrawingBuffer::deleteMailbox(const WebExternalTextureMailbox& mailbox)
 {
     for (size_t i = 0; i < m_textureMailboxes.size(); i++) {
         if (nameEquals(m_textureMailboxes[i]->mailbox, mailbox)) {
             if (mailbox.validSyncToken)
-                m_context->waitSyncTokenCHROMIUM(mailbox.syncToken);
+                m_context->waitSyncToken(mailbox.syncToken);
 
             deleteChromiumImageForTexture(&m_textureMailboxes[i]->textureInfo);
 
             m_context->deleteTexture(m_textureMailboxes[i]->textureInfo.textureId);
             m_textureMailboxes.remove(i);
             return;
         }
     }
     ASSERT_NOT_REACHED();
 }
@@ skipping 86 matching lines @@
     // Contexts may be in a different share group. We must transfer the texture through a mailbox first
     WebExternalTextureMailbox mailbox;
     GLint textureId = 0;
     if (sourceBuffer == FrontBuffer && m_frontColorBuffer.texInfo.textureId) {
         textureId = m_frontColorBuffer.texInfo.textureId;
         mailbox = m_frontColorBuffer.mailbox;
     } else {
         textureId = m_colorBuffer.textureId;
         m_context->genMailboxCHROMIUM(mailbox.name);
         m_context->produceTextureDirectCHROMIUM(textureId, GL_TEXTURE_2D, mailbox.name);
-        const WGC3Duint64 fenceSync = m_context->insertFenceSyncCHROMIUM();
         m_context->flush();
-        mailbox.validSyncToken = m_context->genSyncTokenCHROMIUM(fenceSync, mailbox.syncToken);
+        mailbox.validSyncToken = m_context->insertSyncPoint(mailbox.syncToken);
     }
 
-    if (mailbox.validSyncToken)
-        context->waitSyncTokenCHROMIUM(mailbox.syncToken);
+    context->waitSyncToken(mailbox.syncToken);
     Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox.name);
 
     GLboolean unpackPremultiplyAlphaNeeded = GL_FALSE;
     GLboolean unpackUnpremultiplyAlphaNeeded = GL_FALSE;
     if (m_actualAttributes.alpha && m_actualAttributes.premultipliedAlpha && !premultiplyAlpha)
         unpackUnpremultiplyAlphaNeeded = GL_TRUE;
     else if (m_actualAttributes.alpha && !m_actualAttributes.premultipliedAlpha && premultiplyAlpha)
         unpackPremultiplyAlphaNeeded = GL_TRUE;
 
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, internalFormat, destType, flipY, unpackPremultiplyAlphaNeeded, unpackUnpremultiplyAlphaNeeded);
 
     context->deleteTexture(sourceTexture);
 
-    const WGC3Duint64 fenceSync = context->insertFenceSyncCHROMIUM();
-
     context->flush();
     GLbyte syncToken[24];
-    if (context->genSyncTokenCHROMIUM(fenceSync, syncToken))
-        m_context->waitSyncTokenCHROMIUM(syncToken);
+    if (context->insertSyncPoint(syncToken))
+        m_context->waitSyncToken(syncToken);
 
     return true;
 }
 
 Platform3DObject DrawingBuffer::framebuffer() const
 {
     return m_fbo;
 }
 
 WebLayer* DrawingBuffer::platformLayer()
@@ skipping 435 matching lines @@
 void DrawingBuffer::deleteChromiumImageForTexture(TextureInfo* info)
 {
     if (info->imageId) {
         m_context->releaseTexImage2DCHROMIUM(GL_TEXTURE_2D, info->imageId);
         m_context->destroyImageCHROMIUM(info->imageId);
         info->imageId = 0;
     }
 }
 
 } // namespace blink