internal/graphicsdriver/playstation5: separate the shader part

internal/graphicsdriver/playstation5/graphics_playstation5.go

@@ -153,7 +153,3 @@ func (s *Shader) ID() graphicsdriver.ShaderID {
 func (s *Shader) Dispose() {
 	C.ebitengine_DisposeShader(C.int(s.id))
 }
-
-func RegisterPrecompiledShaders(hash shaderir.SourceHash, vertex, pixel []byte) {
-	// TODO: Implement this.
-}

internal/graphicsdriver/playstation5/shader_paystation5.go

@@ -0,0 +1,27 @@
+// Copyright 2023 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.
+
+//go:build playstation5
+
+// This is a separated pure Go file so that the `shaderprecomp` package can use this without Cgo.
+
+package playstation5
+
+import (
+	"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
+)
+
+func RegisterPrecompiledShaders(hash shaderir.SourceHash, vertex, pixel []byte) {
+	// TODO: Implement this.
+}