Chromium-WebCL is a project that adding WebCL support to the Chromium Web Browser (Chrome). With the new feature, we can get a better image/video support in Web Pages.

This project can be build and run on Windows, and the followings are the build instructions.

Our design reference Samsung's WebCL implementation for WebKit on Mac OSX, which is on:

https://github.com/SRA-SiliconValley/webkit-webcl

We also implemented a Windows version of WebKit-WebCL, which is on:

https://github.com/amd/webkit-webcl/tree/WebCL-on-Windows

• Install Windows 7 or later
  A 64 bit OS is highly recommended as building on 32 bit OS is constantly becoming harder, is a lot slower and is not actively maintained.
  At least 60 GB of free space in an NTFS volume. Tip: having the chromium source in a SSD drive greatly speeds build times.

• Install Visual Studio 2010 Professional
  Make sure "X64 Compilers and Tools" are installed.
  Install VS2010 SP1. Get it from:
  https://www.microsoft.com/en-us/download/details.aspx?id=23691.
  

• Install Windows 8 SDK
  Get it from:
  http://msdn.microsoft.com/en-us/windows/hardware/hh852363.aspx
  Note: If you install the SDK in a path different than
  C:\Program Files (x86)\Windows Kits\8.0
  you need to set the following following environment variable:
  GYP_DEFINES=windows_sdk_path="path to sdk"

• Install June 2010 DirectX SDK
  Get it from:
  http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=6812
  Note: If your install fails with the "Error Code: S1023" you may need to
  uninstall "Microsoft Visual C++ 2010 x64 Redistributable".
  See this tip from stackoverflow:
  http://stackoverflow.com/questions/4102259/directx-sdk-june-2010-installation-problems-error-code-s1023

• Install AMD Driver
  Get it from AMD offical website.
  http://support.amd.com/us/gpudownload/Pages/index.aspx.

• AMD APP SDK
  Get it from AMD offical website.
  http://developer.amd.com/tools-and-sdks/heterogeneous-computing/amd-accelerated-parallel-processing-app-sdk/
  By default Accelerated Parallel Processing(APP) SDK will install to
  C:\Program Files(x86)<br/> then copy
  C:\Program Files(x86)\include\CL to Microsoft Visual Studio 10.0\VC\include
  and copy "C:\Program Files(x86)\lib\x86(x86_64)\OpenCL.lib" to "Microsoft Visual Studio 10.0\Vc\lib"

• Path the Windows 8 SDK to build with Visual C++ 2010
  Parts of Chromium build using the winrt headers included with the Windows 8 SDK. All the headers we use, including the WRL, can be compiled with Visual C++ 2010 with the exception of one file, asyncinfo.h. This file uses a strongly typed enum which the VS2010 compiler doesn't understand. To workaround this for the time being, a small patch needs to be applied to the Windows 8 SDK to build with the winrt headers in VS2010:
  Patch for Include\winrt\asyncinfo.h

    Index: asyncinfo.h
          ---  asyncinfo.
    +++  asyncinfo.h
    @@  -63,f + 63,7  @@
      #pragma once
      #ifdef  __cplusplus
      namespace ABI { namespace Windows { namespce
     Foundation {
       -enum class AsyncStatus {
       +enum /*class*/ AsyncStatus {
           Started = 0,
     Completed, 
     Canceled,
  

This patch should be applied to the file "Include\winrt\asyncinfo.h" located in your Windows 8 SDK directory. If this patch is not applied, the parts of Chromium that use the Winrt headers will not compile.
Note: By default the Windows 8 SDK will install to
C:\Program Files (x86)\Windows Kits\8.0.
This directory will require admin privileges to write to. Easiest way to do apply this patch is to start an administrative command prompt, cd to
C:\Program Files (x86)\Windows Kits\8.0\Include\winrt\
, run notepad.exe asyncinfo.h and comment out or delete the word "class" on line 66.
Note: For Googlers, this patch has already been applied to your SDK, everything should Just Work.

• Get the Chromium depot tools from and add it to the path:

  http://www.chromium.org/developers/how-tos/install-depot-tools.

• running "gclient runhooks --force" in a cmd window.
  Run this command in the Chromium/src folder.

• open the build/all.sln solution file by Visual Studio 2010.
  In Chromium/src/build folder.

• Build
  Set the "Chrome.proj" as Startup Project. And then build. This can take from 10 minutes to 2 hours. More likely 1 hours.

• Run the Test
  Run "test_case\webcl\example2.html", note that we only support this example in opencl_with_sandbox branch.