There is no need repeatedly downloading rust and d3d when building the docker locally
Download glext.h from github
Remove src directory and .git directory once compiling finished
Split piglit and depq compiling out
Clean middle files of piglit and depq
ci/msvc: Improve fetch source of spirv_samples_source
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26736>
