Unbind video texture from mailbox after copying to WebGL.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ skipping 1052 matching lines @@
                       GLsizei levels,
                       GLenum internal_format,
                       GLsizei width,
                       GLsizei height,
                       GLsizei depth);
 
   void DoProduceTextureCHROMIUM(GLenum target, const GLbyte* key);
   void DoProduceTextureDirectCHROMIUM(GLuint texture, GLenum target,
       const GLbyte* key);
   void ProduceTextureRef(const char* func_name,
+                         bool clear,
                          TextureRef* texture_ref,
                          GLenum target,
                          const GLbyte* data);
 
   void EnsureTextureForClientId(GLenum target, GLuint client_id);
   void DoConsumeTextureCHROMIUM(GLenum target, const GLbyte* key);
   void DoCreateAndConsumeTextureCHROMIUM(GLenum target, const GLbyte* key,
     GLuint client_id);
   void DoApplyScreenSpaceAntialiasingCHROMIUM();
 
@@ skipping 14722 matching lines @@
 }
 
 void GLES2DecoderImpl::DoProduceTextureCHROMIUM(GLenum target,
                                                 const GLbyte* data) {
   TRACE_EVENT2("gpu", "GLES2DecoderImpl::DoProduceTextureCHROMIUM",
       "context", logger_.GetLogPrefix(),
       "mailbox[0]", static_cast<unsigned char>(data[0]));
 
   TextureRef* texture_ref = texture_manager()->GetTextureInfoForTarget(
       &state_, target);
-  ProduceTextureRef("glProduceTextureCHROMIUM", texture_ref, target, data);
+  ProduceTextureRef("glProduceTextureCHROMIUM", false, texture_ref, target,
+                    data);
 }
 
 void GLES2DecoderImpl::DoProduceTextureDirectCHROMIUM(GLuint client_id,
     GLenum target, const GLbyte* data) {
   TRACE_EVENT2("gpu", "GLES2DecoderImpl::DoProduceTextureDirectCHROMIUM",
       "context", logger_.GetLogPrefix(),
       "mailbox[0]", static_cast<unsigned char>(data[0]));
 
-  ProduceTextureRef("glProduceTextureDirectCHROMIUM", GetTexture(client_id),
-      target, data);
+  ProduceTextureRef("glProduceTextureDirectCHROMIUM", !client_id,
+                    GetTexture(client_id), target, data);
 }
 
 void GLES2DecoderImpl::ProduceTextureRef(const char* func_name,
+                                         bool clear,
                                          TextureRef* texture_ref,
                                          GLenum target,
                                          const GLbyte* data) {
   const Mailbox mailbox = *reinterpret_cast<const Mailbox*>(data);
   DLOG_IF(ERROR, !mailbox.Verify()) << func_name << " was passed a "
                                        "mailbox that was not generated by "
                                        "GenMailboxCHROMIUM.";
 
+  if (clear) {
+    DCHECK(!texture_ref);
+
+    group_->mailbox_manager()->ProduceTexture(mailbox, nullptr);
+    return;
+  }
+
   if (!texture_ref) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION, func_name, "unknown texture for target");
     return;
   }
 
   Texture* produced = texture_manager()->Produce(texture_ref);
   if (!produced) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_OPERATION, func_name, "invalid texture");
@@ skipping 1913 matching lines @@
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "base/macros.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu