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

47 lines
1.2 KiB
Go
Raw Normal View History

// Copyright 2022 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 gl
import (
"fmt"
"strings"
"github.com/ebitengine/purego"
)
var (
opengl uintptr
)
func (c *defaultContext) init() error {
opengl = purego.Dlopen("OpenGLES.framework/OpenGLES", purego.RTLD_LAZY|purego.RTLD_GLOBAL)
if opengl != 0 {
c.isES = true
return nil
}
opengl = purego.Dlopen("OpenGL.framework/OpenGL", purego.RTLD_LAZY|purego.RTLD_GLOBAL)
if opengl != 0 {
return nil
}
return fmt.Errorf("gl: failed to load OpenGL.framework and OpenGLES.framework")
}
func (c *defaultContext) getProcAddress(name string) uintptr {
if c.isES {
name = strings.TrimSuffix(name, "EXT")
}
return purego.Dlsym(opengl, name)
}