# Build file for shaders.

# You must have Vulkan tools in your path, or patch here.

glslang_validator = glslangValidator
spirv_cross = spirv-cross
dxc = dxc

# See https://github.com/KhronosGroup/SPIRV-Cross/issues/1248 for
# why we set this.
msl_flags = --msl-decoration-binding

rule glsl
  command = $glslang_validator $flags -V -o $out $in

rule hlsl
  command = $spirv_cross --hlsl $in --output $out

rule dxil
  command = $dxc -T cs_6_0 $in -Fo $out

rule msl
  command = $spirv_cross --msl $in --output $out $msl_flags

build gen/clear.spv: glsl clear.comp
build gen/clear.hlsl: hlsl gen/clear.spv
build gen/clear.dxil: dxil gen/clear.hlsl
build gen/clear.msl: msl gen/clear.spv

build gen/prefix.spv: glsl prefix.comp
build gen/prefix.hlsl: hlsl gen/prefix.spv
build gen/prefix.dxil: dxil gen/prefix.hlsl
build gen/prefix.msl: msl gen/prefix.spv

build gen/prefix_reduce.spv: glsl prefix_reduce.comp
build gen/prefix_reduce.hlsl: hlsl gen/prefix_reduce.spv
build gen/prefix_reduce.dxil: dxil gen/prefix_reduce.hlsl
build gen/prefix_reduce.msl: msl gen/prefix_reduce.spv

build gen/prefix_root.spv: glsl prefix_scan.comp
  flags = -DROOT
build gen/prefix_root.hlsl: hlsl gen/prefix_root.spv
build gen/prefix_root.dxil: dxil gen/prefix_root.hlsl
build gen/prefix_root.msl: msl gen/prefix_root.spv

build gen/prefix_scan.spv: glsl prefix_scan.comp
build gen/prefix_scan.hlsl: hlsl gen/prefix_scan.spv
build gen/prefix_scan.dxil: dxil gen/prefix_scan.hlsl
build gen/prefix_scan.msl: msl gen/prefix_scan.spv