ebiten/internal/graphicsdriver/opengl/gl/procaddr.go

44 lines
1.0 KiB
Go

// 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 !js
package gl
import (
"fmt"
)
type procAddressGetter struct {
ctx *defaultContext
err error
}
func (p *procAddressGetter) get(name string) uintptr {
proc, err := p.ctx.getProcAddress(name)
if err != nil {
p.err = fmt.Errorf("gl: %s is missing: %w", name, err)
return 0
}
if proc == 0 {
p.err = fmt.Errorf("gl: %s is missing", name)
return 0
}
return proc
}
func (p *procAddressGetter) error() error {
return p.err
}