[Webkit-unassigned] [Bug 210992] REGRESSION (r259589): Google Maps background layer fades out and back in

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210992

--- Comment #12 from Dean Jackson <dino at apple.com> ---
WebGLRenderingContextBase::setupFlags() had the following
#if USE(ANGLE)
    m_isGLES2NPOTStrict = true;
    m_isDepthStencilSupported = true;
#endif

I've replaced that by 

m_isDepthStencilSupported = m_context->getExtensions().isEnabled("GL_OES_packed_depth_stencil");

and confirmed the extension is enabled.

The actual list of extensions (of the GraphicsContextGL) is:

GL_ANGLE_client_arrays GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_robust_resource_initialization GL_ANGLE_translated_shader_source GL_ANGLE_webgl_compatibility GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_texture GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_KHR_debug GL_NV_fence GL_OES_depth24 GL_OES_packed_depth_stencil GL_OES_surfaceless_context

Checking the ANGLE context now.

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