ebiten/internal/opengl/bytes.go

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2018-05-23 20:04:56 +02:00
// Copyright 2018 The Ebiten 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 opengl
import (
"reflect"
"unsafe"
)
func float32sToBytes(v []float32) []byte {
f32h := (*reflect.SliceHeader)(unsafe.Pointer(&v))
var b []byte
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
bh.Data = f32h.Data
bh.Len = len(v) * 4
bh.Cap = len(v) * 4
return b
}
func uint16sToBytes(v []uint16) []byte {
u16h := (*reflect.SliceHeader)(unsafe.Pointer(&v))
var b []byte
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
bh.Data = u16h.Data
bh.Len = len(v) * 2
bh.Cap = len(v) * 2
return b
}