mirror of
https://github.com/hajimehoshi/ebiten.git
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127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package graphicsutil_test
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import (
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"bytes"
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"image"
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"image/color"
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"image/color/palette"
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"testing"
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. "github.com/hajimehoshi/ebiten/internal/graphicsutil"
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)
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func TestCopyImage(t *testing.T) {
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pal := make(color.Palette, 256)
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for i := range pal {
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pal[i] = color.White
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}
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p := make([]color.Color, 255)
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for i := range p {
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if i == 64 {
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p[i] = color.White
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} else {
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p[i] = color.Transparent
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}
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}
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bigPalette := color.Palette(p)
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cases := []struct {
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In image.Image
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Out []uint8
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}{
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{
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In: &image.Paletted{
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Pix: []uint8{0, 1, 1, 0},
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Stride: 2,
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Rect: image.Rect(0, 0, 2, 2),
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Palette: color.Palette([]color.Color{
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color.Transparent, color.White,
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}),
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},
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Out: []uint8{0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0},
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},
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{
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In: image.NewPaletted(image.Rect(0, 0, 240, 160), pal).SubImage(image.Rect(238, 158, 240, 160)),
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Out: []uint8{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
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},
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{
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In: &image.RGBA{
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Pix: []uint8{0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0},
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Stride: 8,
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Rect: image.Rect(0, 0, 2, 2),
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},
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Out: []uint8{0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0},
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},
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{
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In: &image.NRGBA{
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Pix: []uint8{0, 0, 0, 0, 0xff, 0xff, 0xff, 0x80, 0x80, 0x80, 0x80, 0x80, 0, 0, 0, 0},
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Stride: 8,
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Rect: image.Rect(0, 0, 2, 2),
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},
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Out: []uint8{0, 0, 0, 0, 0x80, 0x80, 0x80, 0x80, 0x40, 0x40, 0x40, 0x80, 0, 0, 0, 0},
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},
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{
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In: &image.Paletted{
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Pix: []uint8{0, 64, 0, 0},
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Stride: 2,
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Rect: image.Rect(0, 0, 2, 2),
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Palette: bigPalette,
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},
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Out: []uint8{0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0},
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},
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{
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In: (&image.Paletted{
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Pix: []uint8{0, 64, 0, 0},
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Stride: 2,
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Rect: image.Rect(0, 0, 2, 2),
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Palette: bigPalette,
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}).SubImage(image.Rect(1, 0, 2, 1)),
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Out: []uint8{0xff, 0xff, 0xff, 0xff},
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},
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}
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for i, c := range cases {
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got := CopyImage(c.In)
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want := c.Out
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if !bytes.Equal(got, want) {
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t.Errorf("Test %d: got: %v, want: %v", i, got, want)
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}
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}
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}
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func BenchmarkCopyImageRGBA(b *testing.B) {
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img := image.NewRGBA(image.Rect(0, 0, 4096, 4096))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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CopyImage(img)
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}
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}
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func BenchmarkCopyImageNRGBA(b *testing.B) {
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img := image.NewNRGBA(image.Rect(0, 0, 4096, 4096))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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CopyImage(img)
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}
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}
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func BenchmarkCopyImagePaletted(b *testing.B) {
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img := image.NewPaletted(image.Rect(0, 0, 4096, 4096), palette.Plan9)
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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CopyImage(img)
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}
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}
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