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297efea68b
Unfortunately PureGo's dlopen didn't work on some Android devices. Use the Cgo version instead in the same way as v2.7. Closes #3052
68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
// Copyright 2024 The Ebitengine Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gl
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// Unfortunately, PureGo's dlopen didn't work well on some Android devices (#3052).
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// Use Cgo instead until PureGo is fixed.
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// #include <dlfcn.h>
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// #include <stdlib.h>
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import "C"
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import (
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"fmt"
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"strings"
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"unsafe"
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)
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var (
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libGLES unsafe.Pointer
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)
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func (c *defaultContext) init() error {
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// TODO: Use multiple %w-s as of Go 1.20.
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var errors []string
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// Try OpenGL ES.
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for _, name := range []string{"libGLESv2.so", "libGLESv2.so.2", "libGLESv2.so.1", "libGLESv2.so.0"} {
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cname := C.CString(name)
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defer C.free(unsafe.Pointer(cname))
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lib := C.dlopen(cname, C.RTLD_LAZY|C.RTLD_GLOBAL)
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if lib != nil {
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libGLES = lib
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c.isES = true
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return nil
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}
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if cerr := C.dlerror(); cerr != nil {
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errors = append(errors, fmt.Sprintf("%s: %v", name, C.GoString(cerr)))
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}
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}
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return fmt.Errorf("gl: failed to load libGLESv2.so: %s", strings.Join(errors, ", "))
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}
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func (c *defaultContext) getProcAddress(name string) (uintptr, error) {
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cname := C.CString(name)
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defer C.free(unsafe.Pointer(cname))
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addr := C.dlsym(libGLES, cname)
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if addr == nil {
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if cerr := C.dlerror(); cerr != nil {
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return 0, fmt.Errorf("gl: failed to load %s: %v", name, C.GoString(cerr))
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}
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return 0, fmt.Errorf("gl: failed to load %s", name)
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}
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return uintptr(addr), nil
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}
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