mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
791 lines
20 KiB
Go
791 lines
20 KiB
Go
// Copyright 2017 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 restorable_test
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import (
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"errors"
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"image"
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"image/color"
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"os"
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"testing"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/internal/driver"
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"github.com/hajimehoshi/ebiten/internal/graphics"
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. "github.com/hajimehoshi/ebiten/internal/restorable"
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"github.com/hajimehoshi/ebiten/internal/testflock"
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)
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func TestMain(m *testing.M) {
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testflock.Lock()
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defer testflock.Unlock()
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EnableRestoringForTesting()
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code := 0
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regularTermination := errors.New("regular termination")
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f := func(screen *ebiten.Image) error {
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code = m.Run()
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return regularTermination
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}
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if err := ebiten.Run(f, 320, 240, 1, "Test"); err != nil && err != regularTermination {
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panic(err)
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}
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os.Exit(code)
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}
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func pixelsToColor(p *Pixels, i, j int) color.RGBA {
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r, g, b, a := p.At(i, j)
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return color.RGBA{r, g, b, a}
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}
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func abs(x int) int {
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if x < 0 {
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return -x
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}
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return x
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}
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// sameColors compares c1 and c2 and returns a boolean value indicating
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// if the two colors are (almost) same.
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//
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// Pixels read from GPU might include errors (#492), and
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// sameColors considers such errors as delta.
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func sameColors(c1, c2 color.RGBA, delta int) bool {
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return abs(int(c1.R)-int(c2.R)) <= delta &&
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abs(int(c1.G)-int(c2.G)) <= delta &&
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abs(int(c1.B)-int(c2.B)) <= delta &&
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abs(int(c1.A)-int(c2.A)) <= delta
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}
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func TestRestore(t *testing.T) {
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img0 := NewImage(1, 1, false)
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defer img0.Dispose()
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clr0 := color.RGBA{0x00, 0x00, 0x00, 0xff}
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img0.ReplacePixels([]byte{clr0.R, clr0.G, clr0.B, clr0.A}, 0, 0, 1, 1)
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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want := clr0
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got := pixelsToColor(img0.BasePixelsForTesting(), 0, 0)
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if !sameColors(got, want, 1) {
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t.Errorf("got %v, want %v", got, want)
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}
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}
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func TestRestoreWithoutDraw(t *testing.T) {
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img0 := NewImage(1024, 1024, false)
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defer img0.Dispose()
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// If there is no drawing command on img0, img0 is cleared when restored.
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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for j := 0; j < 1024; j++ {
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for i := 0; i < 1024; i++ {
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want := color.RGBA{0x00, 0x00, 0x00, 0x00}
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got := pixelsToColor(img0.BasePixelsForTesting(), i, j)
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if !sameColors(got, want, 0) {
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t.Errorf("got %v, want %v", got, want)
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}
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}
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}
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}
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func quadVertices(sw, sh, x, y int) []float32 {
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dx0 := float32(x)
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dy0 := float32(y)
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dx1 := float32(x + sw)
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dy1 := float32(y + sh)
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sx0 := float32(0)
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sy0 := float32(0)
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sx1 := float32(sw)
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sy1 := float32(sh)
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return []float32{
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dx0, dy0, sx0, sy0, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx1, dy0, sx1, sy0, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx0, dy1, sx0, sy1, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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dx1, dy1, sx1, sy1, sx0, sy0, sx1, sy1, 1, 1, 1, 1,
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}
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}
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func TestRestoreChain(t *testing.T) {
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const num = 10
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imgs := []*Image{}
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for i := 0; i < num; i++ {
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img := NewImage(1, 1, false)
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imgs = append(imgs, img)
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}
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defer func() {
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for _, img := range imgs {
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img.Dispose()
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}
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}()
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clr := color.RGBA{0x00, 0x00, 0x00, 0xff}
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imgs[0].ReplacePixels([]byte{clr.R, clr.G, clr.B, clr.A}, 0, 0, 1, 1)
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for i := 0; i < num-1; i++ {
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vs := quadVertices(1, 1, 0, 0)
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is := graphics.QuadIndices()
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imgs[i+1].DrawTriangles(imgs[i], vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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}
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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want := clr
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for i, img := range imgs {
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got := pixelsToColor(img.BasePixelsForTesting(), 0, 0)
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if !sameColors(got, want, 1) {
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t.Errorf("%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 TestRestoreChain2(t *testing.T) {
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const (
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num = 10
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w = 1
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h = 1
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)
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imgs := []*Image{}
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for i := 0; i < num; i++ {
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img := NewImage(w, h, false)
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imgs = append(imgs, img)
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}
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defer func() {
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for _, img := range imgs {
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img.Dispose()
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}
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}()
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clr0 := color.RGBA{0xff, 0x00, 0x00, 0xff}
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imgs[0].ReplacePixels([]byte{clr0.R, clr0.G, clr0.B, clr0.A}, 0, 0, w, h)
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clr7 := color.RGBA{0x00, 0xff, 0x00, 0xff}
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imgs[7].ReplacePixels([]byte{clr7.R, clr7.G, clr7.B, clr7.A}, 0, 0, w, h)
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clr8 := color.RGBA{0x00, 0x00, 0xff, 0xff}
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imgs[8].ReplacePixels([]byte{clr8.R, clr8.G, clr8.B, clr8.A}, 0, 0, w, h)
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is := graphics.QuadIndices()
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imgs[8].DrawTriangles(imgs[7], quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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imgs[9].DrawTriangles(imgs[8], quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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for i := 0; i < 7; i++ {
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imgs[i+1].DrawTriangles(imgs[i], quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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}
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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for i, img := range imgs {
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want := clr0
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if i == 8 || i == 9 {
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want = clr7
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}
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got := pixelsToColor(img.BasePixelsForTesting(), 0, 0)
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if !sameColors(got, want, 1) {
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t.Errorf("%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 TestRestoreOverrideSource(t *testing.T) {
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const (
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w = 1
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h = 1
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)
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img0 := NewImage(w, h, false)
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img1 := NewImage(w, h, false)
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img2 := NewImage(w, h, false)
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img3 := NewImage(w, h, false)
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defer func() {
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img3.Dispose()
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img2.Dispose()
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img1.Dispose()
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img0.Dispose()
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}()
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clr0 := color.RGBA{0x00, 0x00, 0x00, 0xff}
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clr1 := color.RGBA{0x00, 0x00, 0x01, 0xff}
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img1.ReplacePixels([]byte{clr0.R, clr0.G, clr0.B, clr0.A}, 0, 0, w, h)
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is := graphics.QuadIndices()
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img2.DrawTriangles(img1, quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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img3.DrawTriangles(img2, quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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img0.ReplacePixels([]byte{clr1.R, clr1.G, clr1.B, clr1.A}, 0, 0, w, h)
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img1.DrawTriangles(img0, quadVertices(w, h, 0, 0), is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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testCases := []struct {
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name string
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want color.RGBA
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got color.RGBA
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}{
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{
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"0",
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clr1,
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pixelsToColor(img0.BasePixelsForTesting(), 0, 0),
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},
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{
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"1",
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clr1,
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pixelsToColor(img1.BasePixelsForTesting(), 0, 0),
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},
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{
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"2",
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clr0,
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pixelsToColor(img2.BasePixelsForTesting(), 0, 0),
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},
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{
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"3",
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clr0,
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pixelsToColor(img3.BasePixelsForTesting(), 0, 0),
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},
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}
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for _, c := range testCases {
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if !sameColors(c.got, c.want, 1) {
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t.Errorf("%s: got %v, want %v", c.name, c.got, c.want)
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}
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}
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}
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func TestRestoreComplexGraph(t *testing.T) {
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const (
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w = 4
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h = 1
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)
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// 0 -> 3
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// 1 -> 3
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// 1 -> 4
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// 2 -> 4
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// 2 -> 7
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// 3 -> 5
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// 3 -> 6
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// 3 -> 7
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// 4 -> 6
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base := image.NewRGBA(image.Rect(0, 0, w, h))
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base.Pix[0] = 0xff
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base.Pix[1] = 0xff
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base.Pix[2] = 0xff
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base.Pix[3] = 0xff
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img0 := newImageFromImage(base)
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img1 := newImageFromImage(base)
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img2 := newImageFromImage(base)
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img3 := NewImage(w, h, false)
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img4 := NewImage(w, h, false)
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img5 := NewImage(w, h, false)
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img6 := NewImage(w, h, false)
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img7 := NewImage(w, h, false)
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defer func() {
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img7.Dispose()
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img6.Dispose()
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img5.Dispose()
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img4.Dispose()
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img3.Dispose()
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img2.Dispose()
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img1.Dispose()
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img0.Dispose()
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}()
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vs := quadVertices(w, h, 0, 0)
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is := graphics.QuadIndices()
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img3.DrawTriangles(img0, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 1, 0)
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img3.DrawTriangles(img1, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 1, 0)
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img4.DrawTriangles(img1, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 2, 0)
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img4.DrawTriangles(img2, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 0, 0)
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img5.DrawTriangles(img3, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 0, 0)
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img6.DrawTriangles(img3, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 1, 0)
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img6.DrawTriangles(img4, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 0, 0)
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img7.DrawTriangles(img2, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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vs = quadVertices(w, h, 2, 0)
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img7.DrawTriangles(img3, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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testCases := []struct {
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name string
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out string
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image *Image
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}{
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{
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"0",
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"*---",
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img0,
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},
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{
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"1",
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"*---",
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img1,
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},
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{
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"2",
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"*---",
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img2,
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},
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{
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"3",
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"**--",
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img3,
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},
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{
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"4",
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"-**-",
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img4,
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},
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{
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"5",
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"**--",
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img5,
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},
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{
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"6",
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"****",
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img6,
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},
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{
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"7",
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"*-**",
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img7,
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},
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}
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for _, c := range testCases {
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for i := 0; i < 4; i++ {
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want := color.RGBA{}
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if c.out[i] == '*' {
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want = color.RGBA{0xff, 0xff, 0xff, 0xff}
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}
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got := pixelsToColor(c.image.BasePixelsForTesting(), i, 0)
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if !sameColors(got, want, 1) {
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t.Errorf("%s[%d]: got %v, want %v", c.name, i, got, want)
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}
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}
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}
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}
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func newImageFromImage(rgba *image.RGBA) *Image {
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s := rgba.Bounds().Size()
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img := NewImage(s.X, s.Y, false)
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img.ReplacePixels(rgba.Pix, 0, 0, s.X, s.Y)
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return img
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}
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func TestRestoreRecursive(t *testing.T) {
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const (
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w = 4
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h = 1
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)
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base := image.NewRGBA(image.Rect(0, 0, w, h))
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base.Pix[0] = 0xff
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base.Pix[1] = 0xff
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base.Pix[2] = 0xff
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base.Pix[3] = 0xff
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img0 := newImageFromImage(base)
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img1 := NewImage(w, h, false)
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defer func() {
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img1.Dispose()
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img0.Dispose()
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}()
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is := graphics.QuadIndices()
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img1.DrawTriangles(img0, quadVertices(w, h, 1, 0), is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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img0.DrawTriangles(img1, quadVertices(w, h, 1, 0), is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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testCases := []struct {
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name string
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out string
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image *Image
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}{
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{
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"0",
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"*-*-",
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img0,
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},
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{
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"1",
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"-*--",
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img1,
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},
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}
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for _, c := range testCases {
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for i := 0; i < 4; i++ {
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want := color.RGBA{}
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if c.out[i] == '*' {
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want = color.RGBA{0xff, 0xff, 0xff, 0xff}
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}
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got := pixelsToColor(c.image.BasePixelsForTesting(), i, 0)
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if !sameColors(got, want, 1) {
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t.Errorf("%s[%d]: got %v, want %v", c.name, i, got, want)
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}
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}
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}
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}
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func TestReplacePixels(t *testing.T) {
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img := NewImage(17, 31, false)
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defer img.Dispose()
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pix := make([]byte, 4*4*4)
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for i := range pix {
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pix[i] = 0xff
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}
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img.ReplacePixels(pix, 5, 7, 4, 4)
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// Check the region (5, 7)-(9, 11). Outside state is indeterministic.
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for j := 7; j < 11; j++ {
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for i := 5; i < 9; i++ {
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r, g, b, a := img.At(i, j)
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got := color.RGBA{r, g, b, a}
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want := color.RGBA{0xff, 0xff, 0xff, 0xff}
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if got != want {
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t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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ResolveStaleImages()
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if err := RestoreIfNeeded(); err != nil {
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t.Fatal(err)
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}
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for j := 7; j < 11; j++ {
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for i := 5; i < 9; i++ {
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r, g, b, a := img.At(i, j)
|
|
got := color.RGBA{r, g, b, a}
|
|
want := color.RGBA{0xff, 0xff, 0xff, 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDrawTrianglesAndReplacePixels(t *testing.T) {
|
|
base := image.NewRGBA(image.Rect(0, 0, 1, 1))
|
|
base.Pix[0] = 0xff
|
|
base.Pix[1] = 0
|
|
base.Pix[2] = 0
|
|
base.Pix[3] = 0xff
|
|
img0 := newImageFromImage(base)
|
|
defer img0.Dispose()
|
|
img1 := NewImage(2, 1, false)
|
|
defer img1.Dispose()
|
|
|
|
vs := quadVertices(1, 1, 0, 0)
|
|
is := graphics.QuadIndices()
|
|
img1.DrawTriangles(img0, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
|
|
img1.ReplacePixels([]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, 0, 0, 2, 1)
|
|
|
|
ResolveStaleImages()
|
|
if err := RestoreIfNeeded(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
r, g, b, a := img1.At(0, 0)
|
|
got := color.RGBA{r, g, b, a}
|
|
want := color.RGBA{0xff, 0xff, 0xff, 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestDispose(t *testing.T) {
|
|
base0 := image.NewRGBA(image.Rect(0, 0, 1, 1))
|
|
img0 := newImageFromImage(base0)
|
|
defer img0.Dispose()
|
|
|
|
base1 := image.NewRGBA(image.Rect(0, 0, 1, 1))
|
|
img1 := newImageFromImage(base1)
|
|
|
|
base2 := image.NewRGBA(image.Rect(0, 0, 1, 1))
|
|
base2.Pix[0] = 0xff
|
|
base2.Pix[1] = 0xff
|
|
base2.Pix[2] = 0xff
|
|
base2.Pix[3] = 0xff
|
|
img2 := newImageFromImage(base2)
|
|
defer img2.Dispose()
|
|
|
|
is := graphics.QuadIndices()
|
|
img1.DrawTriangles(img2, quadVertices(1, 1, 0, 0), is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
|
|
img0.DrawTriangles(img1, quadVertices(1, 1, 0, 0), is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
|
|
img1.Dispose()
|
|
|
|
ResolveStaleImages()
|
|
if err := RestoreIfNeeded(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
r, g, b, a := img0.At(0, 0)
|
|
got := color.RGBA{r, g, b, a}
|
|
want := color.RGBA{0xff, 0xff, 0xff, 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestReplacePixelsPart(t *testing.T) {
|
|
pix := make([]uint8, 4*2*2)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
|
|
img := NewImage(4, 4, false)
|
|
// This doesn't make the image stale. Its base pixels are available.
|
|
img.ReplacePixels(pix, 1, 1, 2, 2)
|
|
|
|
cases := []struct {
|
|
i int
|
|
j int
|
|
want color.RGBA
|
|
}{
|
|
{
|
|
i: 0,
|
|
j: 0,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 3,
|
|
j: 0,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 0,
|
|
j: 1,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 1,
|
|
j: 1,
|
|
want: color.RGBA{0xff, 0xff, 0xff, 0xff},
|
|
},
|
|
{
|
|
i: 3,
|
|
j: 1,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 0,
|
|
j: 2,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 2,
|
|
j: 2,
|
|
want: color.RGBA{0xff, 0xff, 0xff, 0xff},
|
|
},
|
|
{
|
|
i: 3,
|
|
j: 2,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 0,
|
|
j: 3,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
{
|
|
i: 3,
|
|
j: 3,
|
|
want: color.RGBA{0, 0, 0, 0},
|
|
},
|
|
}
|
|
for _, c := range cases {
|
|
got := pixelsToColor(img.BasePixelsForTesting(), c.i, c.j)
|
|
want := c.want
|
|
if got != want {
|
|
t.Errorf("base pixel (%d, %d): got %v, want %v", c.i, c.j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReplacePixelsOnly(t *testing.T) {
|
|
const w, h = 128, 128
|
|
img0 := NewImage(w, h, false)
|
|
defer img0.Dispose()
|
|
img1 := NewImage(1, 1, false)
|
|
defer img1.Dispose()
|
|
|
|
for i := 0; i < w*h; i += 5 {
|
|
img0.ReplacePixels([]byte{1, 2, 3, 4}, i%w, i/w, 1, 1)
|
|
}
|
|
|
|
vs := quadVertices(1, 1, 0, 0)
|
|
is := graphics.QuadIndices()
|
|
img1.DrawTriangles(img0, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
|
|
img0.ReplacePixels([]byte{5, 6, 7, 8}, 0, 0, 1, 1)
|
|
|
|
// BasePixelsForTesting is available without GPU accessing.
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := j*w + i
|
|
var want color.RGBA
|
|
switch {
|
|
case idx == 0:
|
|
want = color.RGBA{5, 6, 7, 8}
|
|
case idx%5 == 0:
|
|
want = color.RGBA{1, 2, 3, 4}
|
|
}
|
|
got := pixelsToColor(img0.BasePixelsForTesting(), i, j)
|
|
if !sameColors(got, want, 0) {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
ResolveStaleImages()
|
|
if err := RestoreIfNeeded(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
want := color.RGBA{1, 2, 3, 4}
|
|
got := pixelsToColor(img1.BasePixelsForTesting(), 0, 0)
|
|
if !sameColors(got, want, 0) {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
}
|
|
|
|
// TODO: How about volatile/screen images?
|
|
|
|
// Issue #793
|
|
func TestReadPixelsFromVolatileImage(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := NewImage(w, h, true /* volatile */)
|
|
src := NewImage(w, h, false)
|
|
|
|
// First, make sure that dst has pixels
|
|
dst.ReplacePixels(make([]byte, 4*w*h), 0, 0, w, h)
|
|
|
|
// Second, draw src to dst. If the implementation is correct, dst becomes stale.
|
|
pix := make([]byte, 4*w*h)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
src.ReplacePixels(pix, 0, 0, w, h)
|
|
vs := quadVertices(1, 1, 0, 0)
|
|
is := graphics.QuadIndices()
|
|
dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
|
|
|
|
// Read the pixels. If the implementation is correct, dst tries to read its pixels from GPU due to being
|
|
// stale.
|
|
want := byte(0xff)
|
|
got, _, _, _ := dst.At(0, 0)
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestAllowReplacePixelsAfterDrawTriangles(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := NewImage(w, h, false)
|
|
dst := NewImage(w, h, false)
|
|
|
|
vs := quadVertices(w, h, 0, 0)
|
|
is := graphics.QuadIndices()
|
|
dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
|
|
dst.ReplacePixels(make([]byte, 4*w*h), 0, 0, w, h)
|
|
// ReplacePixels for a whole image doesn't panic.
|
|
}
|
|
|
|
func TestDisallowReplacePixelsForPartAfterDrawTriangles(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("ReplacePixels for a part after DrawTriangles must panic but not")
|
|
}
|
|
}()
|
|
|
|
const w, h = 16, 16
|
|
src := NewImage(w, h, false)
|
|
dst := NewImage(w, h, false)
|
|
|
|
vs := quadVertices(w, h, 0, 0)
|
|
is := graphics.QuadIndices()
|
|
dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
|
|
dst.ReplacePixels(make([]byte, 4), 0, 0, 1, 1)
|
|
}
|
|
|
|
func TestExtend(t *testing.T) {
|
|
pixAt := func(i, j int) byte {
|
|
return byte(17*i + 13*j + 0x40)
|
|
}
|
|
|
|
const w, h = 16, 16
|
|
orig := NewImage(w, h, false)
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := j*w + i
|
|
v := pixAt(i, j)
|
|
pix[4*idx] = v
|
|
pix[4*idx+1] = v
|
|
pix[4*idx+2] = v
|
|
pix[4*idx+3] = v
|
|
}
|
|
}
|
|
|
|
orig.ReplacePixels(pix, 0, 0, w, h)
|
|
extended := orig.Extend(w*2, h*2) // After this, orig is already disposed.
|
|
|
|
for j := 0; j < h*2; j++ {
|
|
for i := 0; i < w*2; i++ {
|
|
got, _, _, _ := extended.At(i, j)
|
|
want := byte(0)
|
|
if i < w && j < h {
|
|
want = pixAt(i, j)
|
|
}
|
|
if got != want {
|
|
t.Errorf("extended.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestClearPixels(t *testing.T) {
|
|
const w, h = 16, 16
|
|
img := NewImage(w, h, false)
|
|
img.ReplacePixels(make([]byte, 4*4*4), 0, 0, 4, 4)
|
|
img.ReplacePixels(make([]byte, 4*4*4), 4, 0, 4, 4)
|
|
img.ClearPixels(0, 0, 4, 4)
|
|
img.ClearPixels(4, 0, 4, 4)
|
|
|
|
// After clearing, the regions will be available again.
|
|
img.ReplacePixels(make([]byte, 4*8*4), 0, 0, 8, 4)
|
|
}
|
|
|
|
func TestFill(t *testing.T) {
|
|
const w, h = 16, 16
|
|
img := NewImage(w, h, false)
|
|
img.Fill(color.RGBA{0xff, 0, 0, 0xff})
|
|
ResolveStaleImages()
|
|
if err := RestoreIfNeeded(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := img.At(i, j)
|
|
got := color.RGBA{r, g, b, a}
|
|
want := color.RGBA{0xff, 0, 0, 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|