bytes.go (1137B)
1 // Copyright 2018 The Ebiten Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // +build android ios 16 17 package opengl 18 19 import ( 20 "reflect" 21 "unsafe" 22 ) 23 24 func float32sToBytes(v []float32) []byte { 25 f32h := (*reflect.SliceHeader)(unsafe.Pointer(&v)) 26 27 var b []byte 28 bh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) 29 bh.Data = f32h.Data 30 bh.Len = len(v) * 4 31 bh.Cap = len(v) * 4 32 return b 33 } 34 35 func uint16sToBytes(v []uint16) []byte { 36 u16h := (*reflect.SliceHeader)(unsafe.Pointer(&v)) 37 38 var b []byte 39 bh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) 40 bh.Data = u16h.Data 41 bh.Len = len(v) * 2 42 bh.Cap = len(v) * 2 43 return b 44 }