|
|
@@ -0,0 +1,135 @@
|
|
|
+-- Compile bgfx shader files. Substitution for scripts/shader.mk.
|
|
|
+--
|
|
|
+-- Usage:
|
|
|
+--
|
|
|
+-- add_rules("@bgfx/shaders")
|
|
|
+-- add_files("shader.vert", {type = "vertex", output_dir = "shaders", output_name = "shader.vert.bin", profiles = {glsl = "330"}})
|
|
|
+
|
|
|
+rule("shaders")
|
|
|
+ set_extensions(".vert", ".frag", ".comp")
|
|
|
+ on_buildcmd_file(function (target, batchcmds, shaderfile, opt)
|
|
|
+ import("lib.detect.find_program")
|
|
|
+ import("core.base.option")
|
|
|
+
|
|
|
+ batchcmds:show_progress(opt.progress, "${color.build.object}compiling.shaderc %s", shaderfile)
|
|
|
+
|
|
|
+ -- get bgfx shaderc
|
|
|
+ local shaderc = find_program("shadercRelease") or find_program("shadercDebug")
|
|
|
+ assert(shaderc, "bgfx shaderc not found! please check your bgfx installation.")
|
|
|
+
|
|
|
+ -- determine arguments for shaderc from fileconfig
|
|
|
+ local fileconfig = target:fileconfig(shaderfile)
|
|
|
+
|
|
|
+ local output_filename
|
|
|
+ if fileconfig and fileconfig.output_name then
|
|
|
+ output_filename = fileconfig.output_name
|
|
|
+ else
|
|
|
+ output_filename = path.filename(shaderfile) .. ".bin"
|
|
|
+ end
|
|
|
+
|
|
|
+ local output_dir
|
|
|
+ if fileconfig and fileconfig.output_dir then
|
|
|
+ output_dir = fileconfig.output_dir
|
|
|
+ else
|
|
|
+ output_dir = "shaders"
|
|
|
+ end
|
|
|
+
|
|
|
+ local vardef_filename
|
|
|
+ if fileconfig and fileconfig.vardef then
|
|
|
+ vardef_filename = fileconfig.vardef
|
|
|
+ else
|
|
|
+ vardef_filename = path.join(
|
|
|
+ path.directory(shaderfile),
|
|
|
+ path.basename(shaderfile) .. ".varying.def.sc")
|
|
|
+ end
|
|
|
+
|
|
|
+ local shader_type
|
|
|
+ if fileconfig and fileconfig.type then
|
|
|
+ if table.contains(bgfx_types, fileconfig.type) then
|
|
|
+ shader_type = fileconfig.type
|
|
|
+ else
|
|
|
+ raise("unsupported shader type " .. fileconfig.type)
|
|
|
+ end
|
|
|
+ elseif shaderfile:match("%.vert$") then
|
|
|
+ shader_type = "vertex"
|
|
|
+ elseif shaderfile:match("%.frag$") then
|
|
|
+ shader_type = "fragment"
|
|
|
+ elseif shaderfile:match("%.comp$") then
|
|
|
+ shader_type = "compute"
|
|
|
+ else
|
|
|
+ raise("cannot determine shader type from file name " .. path.filename(shaderfile))
|
|
|
+ end
|
|
|
+
|
|
|
+ -- determine platform-specific shaderc arguments
|
|
|
+ local bgfx_platforms = {
|
|
|
+ windows = "windows",
|
|
|
+ macosx = "osx",
|
|
|
+ linux = "linux"
|
|
|
+ }
|
|
|
+ local bgfx_types = {
|
|
|
+ "vertex",
|
|
|
+ "fragment",
|
|
|
+ "compute"
|
|
|
+ }
|
|
|
+ local bgfx_default_profiles = {
|
|
|
+ windows = {
|
|
|
+ vertex = {dx9 = "vs_3_0", dx11 = "vs_5_0", glsl = "120"},
|
|
|
+ fragment = {dx9 = "ps_3_0", dx11 = "ps_5_0", glsl = "120"},
|
|
|
+ compute = {dx11 = "cs_5_0", glsl = "430"},
|
|
|
+ },
|
|
|
+ macosx = {
|
|
|
+ vertex = {metal = "metal", glsl = "120"},
|
|
|
+ fragment = {metal = "metal", glsl = "120"},
|
|
|
+ compute = {metal = "metal", glsl = "430"}
|
|
|
+ },
|
|
|
+ linux = {
|
|
|
+ vertex = {glsl = "120", spirv = "spirv"},
|
|
|
+ fragment = {glsl = "120", spirv = "spirv"},
|
|
|
+ compute = {glsl = "430", spirv = "spirv"}
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ -- build command args
|
|
|
+ local args = {
|
|
|
+ "-f", shaderfile,
|
|
|
+ "--type", shader_type,
|
|
|
+ "--varyingdef", vardef_filename,
|
|
|
+ "--platform", bgfx_platforms[target:plat()],
|
|
|
+ }
|
|
|
+ for _, includedir in ipairs(target:get("includedirs")) do
|
|
|
+ table.insert(args, "-i")
|
|
|
+ table.insert(args, includedir)
|
|
|
+ end
|
|
|
+
|
|
|
+ local mtime = 0
|
|
|
+ local shader_profiles
|
|
|
+ if fileconfig and fileconfig.profiles then
|
|
|
+ shader_profiles = fileconfig.profiles
|
|
|
+ else
|
|
|
+ shader_profiles = bgfx_default_profiles[target:plat()][shader_type]
|
|
|
+ end
|
|
|
+ for folder, profile in pairs(shader_profiles) do
|
|
|
+ -- set output dir
|
|
|
+ local outputdir = path.join(target:targetdir(), output_dir, folder)
|
|
|
+ batchcmds:mkdir(outputdir)
|
|
|
+ local binary = path.join(outputdir, output_filename)
|
|
|
+
|
|
|
+ -- compiling
|
|
|
+ local real_args = {}
|
|
|
+ table.join2(real_args, args)
|
|
|
+ table.insert(real_args, "-o")
|
|
|
+ table.insert(real_args, binary)
|
|
|
+ table.insert(real_args, "--profile")
|
|
|
+ table.insert(real_args, profile)
|
|
|
+ if option.get("verbose") then
|
|
|
+ batchcmds:show(shaderc .. " " .. os.args(real_args))
|
|
|
+ end
|
|
|
+ batchcmds:vrunv(shaderc, real_args)
|
|
|
+
|
|
|
+ if (mtime == 0) then mtime = os.mtime(binary) end
|
|
|
+ end
|
|
|
+
|
|
|
+ -- add deps
|
|
|
+ batchcmds:add_depfiles(shaderfile)
|
|
|
+ batchcmds:set_depmtime(mtime)
|
|
|
+ end)
|
Hoildkv