Re: [PATCH 0/2] MR784: tests: Check that derivatives are still computed after discarding.

[Henri Verbeet (＠hverbeet)]

Is the test working as intended? I would have expected this to require enabling the VK_EXT_shader_demote_to_helper_invocation for the Vulkan runner, as well as passing VKD3D_SHADER_SPIRV_EXTENSION_EXT_DEMOTE_TO_HELPER_INVOCATION in the SPIR-V target info for vkd3d_shader_compile().

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/784#note_67815