This bug is for crash report bp-1f764b4d-c735-4347-b991-4210d0191214.

Top 10 frames of crashing thread:

0 libglesv2.dll rx::TextureStorage11::setData gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp:805
1 libglesv2.dll rx::TextureD3D::subImage gfx/angle/checkout/src/libANGLE/renderer/d3d/TextureD3D.cpp:305
2 libglesv2.dll rx::TextureD3D_2DArray::setSubImage gfx/angle/checkout/src/libANGLE/renderer/d3d/TextureD3D.cpp:3128
3 libglesv2.dll gl::Texture::setSubImage gfx/angle/checkout/src/libANGLE/Texture.cpp:1055
4 libglesv2.dll gl::Context::texSubImage3D gfx/angle/checkout/src/libANGLE/Context.cpp:4194
5 libglesv2.dll gl::TexSubImage3D gfx/angle/checkout/src/libGLESv2/entry_points_gles_3_0_autogen.cpp:1569
6 xul.dll gleam::gl::{{impl}}::tex_sub_image_3d third_party/rust/gleam/src/gles_fns.rs:802
7 xul.dll webrender::device::gl::UploadTarget::update_impl gfx/wr/webrender/src/device/gl.rs:3688
8 xul.dll webrender::device::gl::TextureUploader<u8>::upload<u8> gfx/wr/webrender/src/device/gl.rs:3643
9 xul.dll webrender::renderer::Renderer::update_texture_cache gfx/wr/webrender/src/renderer.rs:3394

This is a NULL pointer dereference that seems to have started in buildid 20191209095039.

I am assuming this is because of Direct Comp, which we have since turned off

The backtrace above doesn't look like it's related to DirectComposition. I think we've landed some other texture upload work recently, maybe related to that?

Jamie, not sure if this could be related to your work recently?

No, that patch shouldn't have changed anything on windows, although that was my first thought when I saw this. But the build-IDs don't match up - reports started in builds a couple days before my change landed, and continued after it got backed out.

I am completely stumped about what the cause could be, though.

Closing because no crashes reported for 12 weeks.

Bugbug thinks this bug is a regression, but please revert this change in case of error.