Check GL_EXT_texture_format_BGRA8888 before GL_APPLE_texture_format_BGRA8888

When both GL_EXT_texture_format_BGRA8888 and GL_APPLE_texture_format_BGRA8888
extensions are present, the presence of GL_APPLE_texture_format_BGRA8888 was
preventing GL_EXT_texture_format_BGRA8888 from allowing BGRA8888 to be used
as a render target. By checking for GL_EXT_texture_format_BGRA8888 first,
this solves the issue.

The issue was encountered trying to run vr_pixeltests on top of SwiftShader
on the bots with a version of SwiftShader exposing both extension strings.

Change-Id: I446ec502a4703d24c24339708dcbbe9c334a7533
Reviewed-on: https://skia-review.googlesource.com/114495
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Alexis Hetu <sugoi@google.com>
1 file changed