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{ stdenv, fetchFromGitHub, cmake, python }:
# Like many google projects, shaderc doesn't gracefully support separately compiled dependencies, so we can't easily use
# the versions of glslang and spirv-tools used by vulkan-loader. Exact revisions are taken from
# https://github.com/google/shaderc/blob/known-good/known_good.json
# Future work: extract and fetch all revisions automatically based on a revision of shaderc's known-good branch.
let
glslang = fetchFromGitHub {
owner = "KhronosGroup";
repo = "glslang";
rev = "32d3ec319909fcad0b2b308fe1635198773e8316";
sha256 = "1kmgjv5kbrjy6azpgwnjcn3cj8vg5i8hnyk3m969sc0gq2j1rbjj";
};
spirv-tools = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Tools";
rev = "fe2fbee294a8ad4434f828a8b4d99eafe9aac88c";
sha256 = "03rq4ypwqnz34n8ip85n95a3b9rxb34j26azzm3b3invaqchv19x";
};
spirv-headers = fetchFromGitHub {
owner = "KhronosGroup";
repo = "SPIRV-Headers";
rev = "3ce3e49d73b8abbf2ffe33f829f941fb2a40f552";
sha256 = "0yk4bzqifdqpmdxkhvrxbdqhf5ngkga0ig1yyz7khr7rklqfz7wp";
};
in stdenv.mkDerivation rec {
name = "shaderc-git-${version}";
version = "2018-06-01";
src = fetchFromGitHub {
owner = "google";
repo = "shaderc";
rev = "be8e0879750303a1de09385465d6b20ecb8b380d";
sha256 = "16p25ry2i4zrj00zihfpf210f8xd7g398ffbw25igvi9mbn4nbfd";
};
patchPhase = ''
cp -r --no-preserve=mode ${glslang} third_party/glslang
cp -r --no-preserve=mode ${spirv-tools} third_party/spirv-tools
ln -s ${spirv-headers} third_party/spirv-tools/external/spirv-headers
'';
buildInputs = [ cmake python ];
enableParallelBuilding = true;
cmakeFlags = [ "-DSHADERC_SKIP_TESTS=ON" ];
meta = with stdenv.lib; {
inherit (src.meta) homepage;
description = "A collection of tools, libraries and tests for shader compilation.";
};
}
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