| // 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 ( |
| "android.googlesource.com/platform/tools/gpu/framework/binary" |
| "android.googlesource.com/platform/tools/gpu/framework/math/sint" |
| ) |
| |
| type fmtS3_DXT1_RGBA struct{ binary.Generate } |
| |
| func (f *fmtS3_DXT1_RGBA) Key() interface{} { return *f } |
| func (*fmtS3_DXT1_RGBA) String() string { return "S3_DXT1_RGBA" } |
| func (*fmtS3_DXT1_RGBA) Size(w, h int) int { |
| return (sint.Max(sint.AlignUp(w, 4), 4) * sint.Max(sint.AlignUp(h, 4), 4)) / 2 |
| } |
| func (*fmtS3_DXT1_RGBA) Check(d []byte, w, h int) error { |
| return checkSize(d, sint.Max(sint.AlignUp(w, 4), 4), sint.Max(sint.AlignUp(h, 4), 4), 4) |
| } |
| |
| // S3_DXT1_RGBA returns a format representing the texture compression format |
| // with the same name. |
| func S3_DXT1_RGBA() Format { return &fmtS3_DXT1_RGBA{} } |