| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // 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 image |
| |
| import ( |
| "bytes" |
| |
| "android.googlesource.com/platform/tools/gpu/framework/binary" |
| "android.googlesource.com/platform/tools/gpu/framework/binary/endian" |
| "android.googlesource.com/platform/tools/gpu/framework/device" |
| ) |
| |
| type fmtDF32S8 struct{ binary.Generate } |
| |
| func (f *fmtDF32S8) Key() interface{} { return *f } |
| func (*fmtDF32S8) String() string { return "DF32S8" } |
| func (*fmtDF32S8) Size(w, h int) int { return w * h * 5 } |
| func (*fmtDF32S8) Check(d []byte, w, h int) error { return checkSize(d, w, h, 40) } |
| |
| // DF32S8 returns a format containing an 32-bit signed float point depth and 8-bit |
| // unsigned integer stencil value per pixel. |
| func DF32S8() *fmtDF32S8 { return &fmtDF32S8{} } |
| |
| func init() { |
| RegisterConverter(DF32S8(), RGBA(), |
| func(src []byte, width, height int) ([]byte, error) { |
| r := endian.Reader(bytes.NewBuffer(src), device.LittleEndian) |
| dst, i := make([]byte, width*height*4), 0 |
| for y := 0; y < height; y++ { |
| for x := 0; x < width; x++ { |
| d := r.Float32() |
| s := byte(r.Int8()) |
| dst[i+0] = uint8(d * float32(255)) |
| dst[i+1] = 0 |
| dst[i+2] = s |
| dst[i+3] = 255 |
| i += 4 |
| } |
| } |
| return dst, nil |
| }) |
| } |