bytes.go (1163B)
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 //go:build android || ios 16 // +build android ios 17 18 package opengl 19 20 import ( 21 "reflect" 22 "unsafe" 23 ) 24 25 func float32sToBytes(v []float32) []byte { 26 f32h := (*reflect.SliceHeader)(unsafe.Pointer(&v)) 27 28 var b []byte 29 bh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) 30 bh.Data = f32h.Data 31 bh.Len = len(v) * 4 32 bh.Cap = len(v) * 4 33 return b 34 } 35 36 func uint16sToBytes(v []uint16) []byte { 37 u16h := (*reflect.SliceHeader)(unsafe.Pointer(&v)) 38 39 var b []byte 40 bh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) 41 bh.Data = u16h.Data 42 bh.Len = len(v) * 2 43 bh.Cap = len(v) * 2 44 return b 45 }