Bug 36737 – Eliminate use of GL_BGRA in GraphicsContext3DSkia.cpp

• Component: WebGL
• Status: RESOLVED FIXED

[Kenneth Russell]

GraphicsContext3DSkia.cpp currently assumes it is running on desktop GL and uses the GL_BGRA format, which is not part of OpenGL ES 2.0. This code should swizzle the red and blue channels manually and use the GL_RGBA format.

[Kenneth Russell]

Created attachment 51874 [details]
Patch

[WebKit Review Bot]

Attachment 51874 [details] did not pass style-queue:

Failed to run "WebKitTools/Scripts/check-webkit-style" exit_code: 1
WebCore/platform/graphics/skia/GraphicsContext3DSkia.cpp:31:  Found other header before a header this file implements. Should be: config.h, primary header, blank line, and then alphabetically sorted.  [build/include_order] [4]
Total errors found: 1 in 2 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Darin Fisher (:fishd, Google)]

Comment on attachment 51874 [details]
Patch

> Index: WebCore/platform/graphics/skia/GraphicsContext3DSkia.cpp
> +    // FIXME: add GL_BGRA extension support
> +    for (int i = 0; i < size; i += 4)
> +        std::swap(outputVector[i], outputVector[i + 2]);
> +    *format = RGBA;
>      return true;
>  }

^^^ it would be nice to add a comment above the loop explaining
that you are converting from BGRA to RGBA.

r=me with such a comment

[Kenneth Russell]

Created attachment 51928 [details]
Revised patch

Revised patch addressing review feedback and style issue.

[Kenneth Russell]

Comment on attachment 51928 [details]
Revised patch

Clearing flags on attachment: 51928

Committed r56735: <http://trac.webkit.org/changeset/56735>

[Kenneth Russell]

All reviewed patches have been landed.  Closing bug.