ebiten/examples/shaderprecomp/register_darwin.go

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// Copyright 2024 The Ebitengine Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"embed"
"errors"
"fmt"
"io/fs"
"os"
"github.com/hajimehoshi/ebiten/v2/shaderprecomp"
)
//go:embed metallib/*.metallib
var metallibs embed.FS
func registerPrecompiledShaders() error {
srcs := shaderprecomp.AppendBuildinShaderSources(nil)
defaultShaderSource, err := shaderprecomp.NewShaderSource(defaultShaderSourceBytes)
if err != nil {
return err
}
srcs = append(srcs, defaultShaderSource)
for _, src := range srcs {
name := src.ID().String() + ".metallib"
lib, err := metallibs.ReadFile("metallib/" + name)
if err != nil {
if errors.Is(err, fs.ErrNotExist) {
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fmt.Fprintf(os.Stderr, "precompiled Metal library %s was not found. Run 'go generate' for 'metallib' directory to generate them.\n", name)
continue
}
return err
}
shaderprecomp.RegisterMetalLibrary(src, lib)
}
return nil
}