mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-24 18:58:54 +01:00
4585 lines
104 KiB
Go
4585 lines
104 KiB
Go
// Copyright 2016 Hajime Hoshi
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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 ebiten_test
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import (
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"bytes"
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"fmt"
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"image"
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"image/color"
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"image/draw"
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_ "image/png"
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"math"
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"math/rand"
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"runtime"
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"testing"
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"time"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/examples/resources/images"
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"github.com/hajimehoshi/ebiten/v2/internal/graphics"
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t "github.com/hajimehoshi/ebiten/v2/internal/testing"
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"github.com/hajimehoshi/ebiten/v2/internal/ui"
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)
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// maxImageSize is a maximum image size that should work in almost every environment.
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const maxImageSize = 4096 - 2
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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func skipTooSlowTests(t *testing.T) bool {
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if testing.Short() {
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t.Skip("skipping test in short mode")
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return true
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}
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if runtime.GOOS == "js" {
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t.Skip("too slow or fragile on Wasm")
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return true
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}
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return false
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}
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func TestMain(m *testing.M) {
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ui.SetPanicOnErrorOnReadingPixelsForTesting(true)
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t.MainWithRunLoop(m)
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}
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func openEbitenImage() (*ebiten.Image, image.Image, error) {
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img, _, err := image.Decode(bytes.NewReader(images.Ebiten_png))
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if err != nil {
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return nil, nil, err
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}
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eimg := ebiten.NewImageFromImage(img)
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return eimg, img, nil
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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 TestImagePixels(t *testing.T) {
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img0, img, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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if got := img0.Bounds().Size(); got != img.Bounds().Size() {
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t.Fatalf("img size: got %d; want %d", got, img.Bounds().Size())
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}
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w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
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// Check out of range part
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w2, h2 := graphics.InternalImageSize(w), graphics.InternalImageSize(h)
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for j := -100; j < h2+100; j++ {
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for i := -100; i < w2+100; i++ {
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got := img0.At(i, j)
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want := color.RGBAModel.Convert(img.At(i, j))
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if got != want {
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t.Errorf("img0 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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pix := make([]byte, 4*w*h)
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img0.ReadPixels(pix)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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idx := 4 * (j*w + i)
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got := color.RGBA{R: pix[idx], G: pix[idx+1], B: pix[idx+2], A: pix[idx+3]}
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want := color.RGBAModel.Convert(img.At(i, j))
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if got != want {
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t.Errorf("(%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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}
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func TestImageComposition(t *testing.T) {
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img2Color := color.NRGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88}
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img3Color := color.NRGBA{R: 0x85, G: 0xa3, B: 0x08, A: 0xd3}
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// TODO: Rename this to img0
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img1, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img1.Bounds().Dx(), img1.Bounds().Dy()
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img2 := ebiten.NewImage(w, h)
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img3 := ebiten.NewImage(w, h)
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img2.Fill(img2Color)
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img3.Fill(img3Color)
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img_12_3 := ebiten.NewImage(w, h)
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img2.DrawImage(img1, nil)
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img3.DrawImage(img2, nil)
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img_12_3.DrawImage(img3, nil)
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img2.Fill(img2Color)
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img3.Fill(img3Color)
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img_1_23 := ebiten.NewImage(w, h)
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img3.DrawImage(img2, nil)
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img3.DrawImage(img1, nil)
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img_1_23.DrawImage(img3, nil)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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c1 := img_12_3.At(i, j).(color.RGBA)
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c2 := img_1_23.At(i, j).(color.RGBA)
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if !sameColors(c1, c2, 1) {
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t.Errorf("img_12_3.At(%d, %d) = %v; img_1_23.At(%[1]d, %[2]d) = %#[4]v", i, j, c1, c2)
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}
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if c1.A == 0 {
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t.Fatalf("img_12_3.At(%d, %d).A = 0; nothing is rendered?", i, j)
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}
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if c2.A == 0 {
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t.Fatalf("img_1_23.At(%d, %d).A = 0; nothing is rendered?", i, j)
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}
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}
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}
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}
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func TestImageSelf(t *testing.T) {
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// Note that mutex usages: without defer, unlocking is not called when panicking.
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defer func() {
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if r := recover(); r == nil {
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t.Errorf("DrawImage must panic but not")
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}
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}()
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img, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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img.DrawImage(img, nil)
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}
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func TestImageScale(t *testing.T) {
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for _, scale := range []int{2, 3, 4} {
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img0, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
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img1 := ebiten.NewImage(w*scale, h*scale)
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Scale(float64(scale), float64(scale))
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img1.DrawImage(img0, op)
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for j := 0; j < h*scale; j++ {
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for i := 0; i < w*scale; i++ {
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c0 := img0.At(i/scale, j/scale).(color.RGBA)
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c1 := img1.At(i, j).(color.RGBA)
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if c0 != c1 {
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t.Fatalf("img0.At(%[1]d, %[2]d) should equal to img1.At(%[3]d, %[4]d) (with scale %[5]d) but not: %[6]v vs %[7]v", i/2, j/2, i, j, scale, c0, c1)
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}
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}
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}
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}
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}
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func TestImage90DegreeRotate(t *testing.T) {
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img0, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
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img1 := ebiten.NewImage(h, w)
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Rotate(math.Pi / 2)
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op.GeoM.Translate(float64(h), 0)
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img1.DrawImage(img0, op)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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c0 := img0.At(i, j).(color.RGBA)
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c1 := img1.At(h-j-1, i).(color.RGBA)
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if c0 != c1 {
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t.Errorf("img0.At(%[1]d, %[2]d) should equal to img1.At(%[3]d, %[4]d) but not: %[5]v vs %[6]v", i, j, h-j-1, i, c0, c1)
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}
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}
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}
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}
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func TestImageDotByDotInversion(t *testing.T) {
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img0, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
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img1 := ebiten.NewImage(w, h)
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Rotate(math.Pi)
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op.GeoM.Translate(float64(w), float64(h))
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img1.DrawImage(img0, op)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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c0 := img0.At(i, j).(color.RGBA)
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c1 := img1.At(w-i-1, h-j-1).(color.RGBA)
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if c0 != c1 {
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t.Errorf("img0.At(%[1]d, %[2]d) should equal to img1.At(%[3]d, %[4]d) but not: %[5]v vs %[6]v", i, j, w-i-1, h-j-1, c0, c1)
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}
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}
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}
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}
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func TestImageWritePixels(t *testing.T) {
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// Create a dummy image so that the shared texture is used and origImg's position is shifted.
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dummyImg := ebiten.NewImageFromImage(image.NewRGBA(image.Rect(0, 0, 16, 16)))
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defer dummyImg.Deallocate()
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_, origImg, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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// Convert to *image.RGBA just in case.
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img := image.NewRGBA(origImg.Bounds())
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draw.Draw(img, img.Bounds(), origImg, image.ZP, draw.Src)
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size := img.Bounds().Size()
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img0 := ebiten.NewImage(size.X, size.Y)
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img0.WritePixels(img.Pix)
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for j := 0; j < img0.Bounds().Dy(); j++ {
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for i := 0; i < img0.Bounds().Dx(); i++ {
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got := img0.At(i, j)
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want := img.At(i, j)
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if got != want {
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t.Errorf("img0 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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p := make([]uint8, 4*size.X*size.Y)
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for i := range p {
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p[i] = 0x80
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}
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img0.WritePixels(p)
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// Even if p is changed after calling ReplacePixel, img0 uses the original values.
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for i := range p {
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p[i] = 0
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}
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for j := 0; j < img0.Bounds().Dy(); j++ {
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for i := 0; i < img0.Bounds().Dx(); i++ {
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got := img0.At(i, j)
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want := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}
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if got != want {
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t.Errorf("img0 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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}
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func TestImageWritePixelsNil(t *testing.T) {
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defer func() {
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if r := recover(); r == nil {
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t.Errorf("WritePixels(nil) must panic")
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}
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}()
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img := ebiten.NewImage(16, 16)
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img.Fill(color.White)
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img.WritePixels(nil)
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}
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func TestImageDispose(t *testing.T) {
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img := ebiten.NewImage(16, 16)
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img.Fill(color.White)
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img.Dispose()
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// The color is transparent (color.RGBA{}).
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// Note that the value's type must be color.RGBA.
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got := img.At(0, 0)
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want := color.RGBA{}
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if got != want {
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t.Errorf("img.At(0, 0) got: %v, want: %v", got, want)
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}
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}
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func TestImageDeallocate(t *testing.T) {
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img := ebiten.NewImage(16, 16)
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img.Fill(color.White)
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img.Deallocate()
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// The color is transparent (color.RGBA{}).
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got := img.At(0, 0)
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want := color.RGBA{}
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if got != want {
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t.Errorf("img.At(0, 0) got: %v, want: %v", got, want)
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}
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}
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type ordered interface {
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~int | ~int8 | ~int16 | ~int32 | ~int64 | ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr | ~float32 | ~float64 | ~string
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}
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// TODO: Use the built-in function min from Go 1.21.
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func min[T ordered](a, b T) T {
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if a < b {
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return a
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}
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return b
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}
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// TODO: Use the built-in function max from Go 1.21.
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func max[T ordered](a, b T) T {
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if a < b {
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return b
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}
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return a
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}
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func TestImageBlendLighter(t *testing.T) {
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img0, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
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img1 := ebiten.NewImage(w, h)
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img1.Fill(color.RGBA{R: 0x01, G: 0x02, B: 0x03, A: 0x04})
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op := &ebiten.DrawImageOptions{}
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op.Blend = ebiten.BlendLighter
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img1.DrawImage(img0, op)
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for j := 0; j < img1.Bounds().Dy(); j++ {
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for i := 0; i < img1.Bounds().Dx(); i++ {
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got := img1.At(i, j).(color.RGBA)
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want := img0.At(i, j).(color.RGBA)
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want.R = uint8(min(0xff, int(want.R)+1))
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want.G = uint8(min(0xff, int(want.G)+2))
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want.B = uint8(min(0xff, int(want.B)+3))
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want.A = uint8(min(0xff, int(want.A)+4))
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if got != want {
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t.Errorf("img1 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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}
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func TestNewImageFromEbitenImage(t *testing.T) {
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img, _, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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_ = ebiten.NewImageFromImage(img)
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}
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func TestNewImageFromSubImage(t *testing.T) {
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_, img, err := openEbitenImage()
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if err != nil {
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t.Fatal(err)
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return
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}
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w, h := img.Bounds().Dx(), img.Bounds().Dy()
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subImg := img.(*image.NRGBA).SubImage(image.Rect(1, 1, w-1, h-1))
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eimg := ebiten.NewImageFromImage(subImg)
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sw, sh := subImg.Bounds().Dx(), subImg.Bounds().Dy()
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w2, h2 := eimg.Bounds().Dx(), eimg.Bounds().Dy()
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if w2 != sw {
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t.Errorf("eimg Width: got %v; want %v", w2, sw)
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}
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if h2 != sh {
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t.Errorf("eimg Width: got %v; want %v", h2, sh)
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}
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for j := 0; j < h2; j++ {
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for i := 0; i < w2; i++ {
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got := eimg.At(i, j)
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want := color.RGBAModel.Convert(img.At(i+1, j+1))
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if got != want {
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t.Errorf("img0 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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}
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|
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type mutableRGBA struct {
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r, g, b, a uint8
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}
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func (c *mutableRGBA) RGBA() (r, g, b, a uint32) {
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return uint32(c.r) * 0x101, uint32(c.g) * 0x101, uint32(c.b) * 0x101, uint32(c.a) * 0x101
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}
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func TestImageFill(t *testing.T) {
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w, h := 10, 10
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img := ebiten.NewImage(w, h)
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clr := &mutableRGBA{0x80, 0x80, 0x80, 0x80}
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img.Fill(clr)
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clr.r = 0
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := img.At(i, j)
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want := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}
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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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}
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|
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// Issue #740
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func TestImageClear(t *testing.T) {
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const w, h = 128, 256
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img := ebiten.NewImage(w, h)
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img.Fill(color.White)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := img.At(i, j)
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want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
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if got != want {
|
|
t.Errorf("img At(%d, %d): got %v; want %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
img.Clear()
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{}
|
|
if got != want {
|
|
t.Errorf("img At(%d, %d): got %v; want %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #317, #558, #724
|
|
func TestImageEdge(t *testing.T) {
|
|
// TODO: This test is not so meaningful after #1218. Do we remove this?
|
|
|
|
if skipTooSlowTests(t) {
|
|
return
|
|
}
|
|
|
|
const (
|
|
img0Width = 10
|
|
img0Height = 10
|
|
img0InnerWidth = 10
|
|
img0InnerHeight = 10
|
|
|
|
img1Width = 32
|
|
img1Height = 32
|
|
)
|
|
img0 := ebiten.NewImage(img0Width, img0Height)
|
|
pixels := make([]uint8, 4*img0Width*img0Height)
|
|
for j := 0; j < img0Height; j++ {
|
|
for i := 0; i < img0Width; i++ {
|
|
idx := 4 * (i + j*img0Width)
|
|
pixels[idx] = 0xff
|
|
pixels[idx+1] = 0
|
|
pixels[idx+2] = 0
|
|
pixels[idx+3] = 0xff
|
|
}
|
|
}
|
|
img0.WritePixels(pixels)
|
|
img1 := ebiten.NewImage(img1Width, img1Height)
|
|
red := color.RGBA{R: 0xff, A: 0xff}
|
|
transparent := color.RGBA{}
|
|
|
|
angles := []float64{}
|
|
for a := 0; a < 1440; a++ {
|
|
angles = append(angles, float64(a)/1440*2*math.Pi)
|
|
}
|
|
for a := 0; a < 4096; a += 3 {
|
|
// a++ should be fine, but it takes long to test.
|
|
angles = append(angles, float64(a)/4096*2*math.Pi)
|
|
}
|
|
|
|
for _, s := range []float64{1, 0.5, 0.25} {
|
|
for _, f := range []ebiten.Filter{ebiten.FilterNearest, ebiten.FilterLinear} {
|
|
for _, a := range angles {
|
|
for _, testDrawTriangles := range []bool{false, true} {
|
|
img1.Clear()
|
|
w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
|
|
b := img0.Bounds()
|
|
var geo ebiten.GeoM
|
|
geo.Translate(-float64(w)/2, -float64(h)/2)
|
|
geo.Scale(s, s)
|
|
geo.Rotate(a)
|
|
geo.Translate(img1Width/2, img1Height/2)
|
|
if !testDrawTriangles {
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM = geo
|
|
op.Filter = f
|
|
img1.DrawImage(img0, op)
|
|
} else {
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
dx0, dy0 := geo.Apply(0, 0)
|
|
dx1, dy1 := geo.Apply(float64(w), 0)
|
|
dx2, dy2 := geo.Apply(0, float64(h))
|
|
dx3, dy3 := geo.Apply(float64(w), float64(h))
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: float32(dx0),
|
|
DstY: float32(dy0),
|
|
SrcX: float32(b.Min.X),
|
|
SrcY: float32(b.Min.Y),
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: float32(dx1),
|
|
DstY: float32(dy1),
|
|
SrcX: float32(b.Max.X),
|
|
SrcY: float32(b.Min.Y),
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: float32(dx2),
|
|
DstY: float32(dy2),
|
|
SrcX: float32(b.Min.X),
|
|
SrcY: float32(b.Max.Y),
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: float32(dx3),
|
|
DstY: float32(dy3),
|
|
SrcX: float32(b.Max.X),
|
|
SrcY: float32(b.Max.Y),
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
op.Filter = f
|
|
img1.DrawTriangles(vs, is, img0, op)
|
|
}
|
|
allTransparent := true
|
|
for j := 0; j < img1Height; j++ {
|
|
for i := 0; i < img1Width; i++ {
|
|
c := img1.At(i, j)
|
|
if c == transparent {
|
|
continue
|
|
}
|
|
allTransparent = false
|
|
switch f {
|
|
case ebiten.FilterNearest:
|
|
if c == red {
|
|
continue
|
|
}
|
|
case ebiten.FilterLinear:
|
|
if _, g, b, _ := c.RGBA(); g == 0 && b == 0 {
|
|
continue
|
|
}
|
|
}
|
|
t.Fatalf("img1.At(%d, %d) (filter: %d, scale: %f, angle: %f, draw-triangles?: %t) want: red or transparent, got: %v", i, j, f, s, a, testDrawTriangles, c)
|
|
}
|
|
}
|
|
if allTransparent {
|
|
t.Fatalf("img1 (filter: %d, scale: %f, angle: %f, draw-triangles?: %t) is transparent but should not", f, s, a, testDrawTriangles)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #419
|
|
func TestImageTooManyFill(t *testing.T) {
|
|
const width = 1024
|
|
|
|
indexToColor := func(index int) uint8 {
|
|
return uint8((17*index + 0x40) % 256)
|
|
}
|
|
|
|
src := ebiten.NewImage(1, 1)
|
|
dst := ebiten.NewImage(width, 1)
|
|
for i := 0; i < width; i++ {
|
|
c := indexToColor(i)
|
|
src.Fill(color.RGBA{R: c, G: c, B: c, A: 0xff})
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(float64(i), 0)
|
|
dst.DrawImage(src, op)
|
|
}
|
|
|
|
for i := 0; i < width; i++ {
|
|
c := indexToColor(i)
|
|
got := dst.At(i, 0).(color.RGBA)
|
|
want := color.RGBA{R: c, G: c, B: c, A: 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got %v, want: %v", i, 0, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkDrawImage(b *testing.B) {
|
|
img0 := ebiten.NewImage(16, 16)
|
|
img1 := ebiten.NewImage(16, 16)
|
|
op := &ebiten.DrawImageOptions{}
|
|
for i := 0; i < b.N; i++ {
|
|
img0.DrawImage(img1, op)
|
|
}
|
|
}
|
|
|
|
func TestImageLinearGraduation(t *testing.T) {
|
|
img0 := ebiten.NewImage(2, 2)
|
|
img0.WritePixels([]byte{
|
|
0xff, 0x00, 0x00, 0xff,
|
|
0x00, 0xff, 0x00, 0xff,
|
|
0x00, 0x00, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff,
|
|
})
|
|
|
|
const w, h = 32, 32
|
|
img1 := ebiten.NewImage(w, h)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(w, h)
|
|
op.GeoM.Translate(-w/4, -h/4)
|
|
op.Filter = ebiten.FilterLinear
|
|
img1.DrawImage(img0, op)
|
|
|
|
for j := 1; j < h-1; j++ {
|
|
for i := 1; i < w-1; i++ {
|
|
c := img1.At(i, j).(color.RGBA)
|
|
if c.R == 0 || c.R == 0xff {
|
|
t.Errorf("img1.At(%d, %d).R must be in between 0x01 and 0xfe but %v", i, j, c)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOutside(t *testing.T) {
|
|
src := ebiten.NewImage(5, 10) // internal texture size is 8x16.
|
|
dst := ebiten.NewImage(4, 4)
|
|
src.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
cases := []struct {
|
|
X, Y, Width, Height int
|
|
}{
|
|
{-4, -4, 4, 4},
|
|
{5, 0, 4, 4},
|
|
{0, 10, 4, 4},
|
|
{5, 10, 4, 4},
|
|
{8, 0, 4, 4},
|
|
{0, 16, 4, 4},
|
|
{8, 16, 4, 4},
|
|
{8, -4, 4, 4},
|
|
{-4, 16, 4, 4},
|
|
{5, 10, 0, 0},
|
|
{5, 10, -2, -2}, // non-well-formed rectangle
|
|
}
|
|
for _, c := range cases {
|
|
dst.Clear()
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(0, 0)
|
|
dst.DrawImage(src.SubImage(image.Rectangle{
|
|
Min: image.Pt(c.X, c.Y),
|
|
Max: image.Pt(c.X+c.Width, c.Y+c.Height),
|
|
}).(*ebiten.Image), op)
|
|
|
|
for j := 0; j < 4; j++ {
|
|
for i := 0; i < 4; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{}
|
|
if got != want {
|
|
t.Errorf("src(x: %d, y: %d, w: %d, h: %d), dst At(%d, %d): got %v, want: %v", c.X, c.Y, c.Width, c.Height, i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOutsideUpperLeft(t *testing.T) {
|
|
src := ebiten.NewImage(4, 4)
|
|
dst1 := ebiten.NewImage(16, 16)
|
|
dst2 := ebiten.NewImage(16, 16)
|
|
src.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Rotate(math.Pi / 4)
|
|
dst1.DrawImage(src.SubImage(image.Rect(-4, -4, 8, 8)).(*ebiten.Image), op)
|
|
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Rotate(math.Pi / 4)
|
|
dst2.DrawImage(src, op)
|
|
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst1.At(i, j).(color.RGBA)
|
|
want := dst2.At(i, j).(color.RGBA)
|
|
if got != want {
|
|
t.Errorf("got: dst1.At(%d, %d): %v, want: dst2.At(%d, %d): %v", i, j, got, i, j, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageSize(t *testing.T) {
|
|
const (
|
|
w = 17
|
|
h = 31
|
|
)
|
|
img := ebiten.NewImage(w, h)
|
|
gotW, gotH := img.Bounds().Dx(), img.Bounds().Dy()
|
|
if gotW != w {
|
|
t.Errorf("got: %d, want: %d", gotW, w)
|
|
}
|
|
if gotH != h {
|
|
t.Errorf("got: %d, want: %d", gotH, h)
|
|
}
|
|
}
|
|
|
|
func TestImageSize1(t *testing.T) {
|
|
src := ebiten.NewImage(1, 1)
|
|
dst := ebiten.NewImage(1, 1)
|
|
src.Fill(color.White)
|
|
dst.DrawImage(src, nil)
|
|
got := src.At(0, 0).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
// TODO: Enable this test again. This test fails after #1217 is fixed.
|
|
func Skip_TestImageSize4096(t *testing.T) {
|
|
src := ebiten.NewImage(4096, 4096)
|
|
dst := ebiten.NewImage(4096, 4096)
|
|
pix := make([]byte, 4096*4096*4)
|
|
for i := 0; i < 4096; i++ {
|
|
j := 4095
|
|
idx := 4 * (i + j*4096)
|
|
pix[idx] = uint8(i + j)
|
|
pix[idx+1] = uint8((i + j) >> 8)
|
|
pix[idx+2] = uint8((i + j) >> 16)
|
|
pix[idx+3] = 0xff
|
|
}
|
|
for j := 0; j < 4096; j++ {
|
|
i := 4095
|
|
idx := 4 * (i + j*4096)
|
|
pix[idx] = uint8(i + j)
|
|
pix[idx+1] = uint8((i + j) >> 8)
|
|
pix[idx+2] = uint8((i + j) >> 16)
|
|
pix[idx+3] = 0xff
|
|
}
|
|
src.WritePixels(pix)
|
|
dst.DrawImage(src, nil)
|
|
for i := 4095; i < 4096; i++ {
|
|
j := 4095
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: uint8(i + j), G: uint8((i + j) >> 8), B: uint8((i + j) >> 16), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
for j := 4095; j < 4096; j++ {
|
|
i := 4095
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: uint8(i + j), G: uint8((i + j) >> 8), B: uint8((i + j) >> 16), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageCopy(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("copying image and using it must panic")
|
|
}
|
|
}()
|
|
|
|
img0 := ebiten.NewImage(256, 256)
|
|
img1 := *img0
|
|
img1.Fill(color.Transparent)
|
|
}
|
|
|
|
// Issue #611, #907
|
|
func TestImageStretch(t *testing.T) {
|
|
if skipTooSlowTests(t) {
|
|
return
|
|
}
|
|
|
|
const w = 16
|
|
|
|
dst := ebiten.NewImage(w, maxImageSize)
|
|
loop:
|
|
for h := 1; h <= 32; h++ {
|
|
src := ebiten.NewImage(w+2, h+2)
|
|
|
|
pix := make([]byte, 4*(w+2)*(h+2))
|
|
for i := 0; i < (w+2)*(h+2); i++ {
|
|
pix[4*i] = 0xff
|
|
pix[4*i+3] = 0xff
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
dh := dst.Bounds().Dy()
|
|
for i := 0; i < dh; {
|
|
dst.Clear()
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1, float64(i)/float64(h))
|
|
dst.DrawImage(src.SubImage(image.Rect(1, 1, w+1, h+1)).(*ebiten.Image), op)
|
|
for j := -1; j <= 1; j++ {
|
|
if i+j < 0 {
|
|
continue
|
|
}
|
|
got := dst.At(0, i+j).(color.RGBA)
|
|
want := color.RGBA{}
|
|
if j < 0 {
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d) (height=%d, scale=%d/%d): got: %v, want: %v", 0, i+j, h, i, h, got, want)
|
|
continue loop
|
|
}
|
|
}
|
|
switch i % 32 {
|
|
case 31, 0:
|
|
i++
|
|
case 1:
|
|
i += 32 - 2
|
|
default:
|
|
panic("not reached")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageSprites(t *testing.T) {
|
|
const (
|
|
width = 512
|
|
height = 512
|
|
)
|
|
|
|
src := ebiten.NewImage(4, 4)
|
|
src.Fill(color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff})
|
|
dst := ebiten.NewImage(width, height)
|
|
for j := 0; j < height/4; j++ {
|
|
for i := 0; i < width/4; i++ {
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(float64(i*4), float64(j*4))
|
|
dst.DrawImage(src, op)
|
|
}
|
|
}
|
|
|
|
for j := 0; j < height/4; j++ {
|
|
for i := 0; i < width/4; i++ {
|
|
got := dst.At(i*4, j*4).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got %v, want: %v", i*4, j*4, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Disabled: it does not make sense to expect deterministic mipmap results (#909).
|
|
func Disabled_TestImageMipmap(t *testing.T) {
|
|
src, _, err := openEbitenImage()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
return
|
|
}
|
|
w, h := src.Bounds().Dx(), src.Bounds().Dy()
|
|
|
|
l1 := ebiten.NewImage(w/2, h/2)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1/2.0, 1/2.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
l1.DrawImage(src, op)
|
|
|
|
l1w, l1h := l1.Bounds().Dx(), l1.Bounds().Dy()
|
|
l2 := ebiten.NewImage(l1w/2, l1h/2)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1/2.0, 1/2.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
l2.DrawImage(l1, op)
|
|
|
|
gotDst := ebiten.NewImage(w, h)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1/5.0, 1/5.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
gotDst.DrawImage(src, op)
|
|
|
|
wantDst := ebiten.NewImage(w, h)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(4.0/5.0, 4.0/5.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
wantDst.DrawImage(l2, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := gotDst.At(i, j).(color.RGBA)
|
|
want := wantDst.At(i, j).(color.RGBA)
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Disabled: it does not make sense to expect deterministic mipmap results (#909).
|
|
func Disabled_TestImageMipmapNegativeDet(t *testing.T) {
|
|
src, _, err := openEbitenImage()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
return
|
|
}
|
|
w, h := src.Bounds().Dx(), src.Bounds().Dy()
|
|
|
|
l1 := ebiten.NewImage(w/2, h/2)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1/2.0, 1/2.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
l1.DrawImage(src, op)
|
|
|
|
l1w, l1h := l1.Bounds().Dx(), l1.Bounds().Dy()
|
|
l2 := ebiten.NewImage(l1w/2, l1h/2)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1/2.0, 1/2.0)
|
|
op.Filter = ebiten.FilterLinear
|
|
l2.DrawImage(l1, op)
|
|
|
|
gotDst := ebiten.NewImage(w, h)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(-1/5.0, -1/5.0)
|
|
op.GeoM.Translate(float64(w), float64(h))
|
|
op.Filter = ebiten.FilterLinear
|
|
gotDst.DrawImage(src, op)
|
|
|
|
wantDst := ebiten.NewImage(w, h)
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(-4.0/5.0, -4.0/5.0)
|
|
op.GeoM.Translate(float64(w), float64(h))
|
|
op.Filter = ebiten.FilterLinear
|
|
wantDst.DrawImage(l2, op)
|
|
|
|
allZero := true
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := gotDst.At(i, j).(color.RGBA)
|
|
want := wantDst.At(i, j).(color.RGBA)
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
if got.A > 0 {
|
|
allZero = false
|
|
}
|
|
}
|
|
}
|
|
|
|
if allZero {
|
|
t.Errorf("the image must include non-zero values but not")
|
|
}
|
|
}
|
|
|
|
// Issue #710
|
|
func TestImageMipmapColor(t *testing.T) {
|
|
img0 := ebiten.NewImage(256, 256)
|
|
img1 := ebiten.NewImage(128, 128)
|
|
img1.Fill(color.White)
|
|
|
|
for i := 0; i < 8; i++ {
|
|
img0.Clear()
|
|
|
|
s := 1 - float64(i)/8
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Filter = ebiten.FilterLinear
|
|
op.GeoM.Scale(s, s)
|
|
op.ColorScale.Scale(1, 1, 0, 1)
|
|
img0.DrawImage(img1, op)
|
|
|
|
op.GeoM.Translate(128, 0)
|
|
op.ColorScale.Reset()
|
|
op.ColorScale.Scale(0, 1, 1, 1)
|
|
img0.DrawImage(img1, op)
|
|
|
|
want := color.RGBA{G: 0xff, B: 0xff, A: 0xff}
|
|
got := img0.At(128, 0)
|
|
if got != want {
|
|
t.Errorf("want: %v, got: %v", want, got)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #725
|
|
func TestImageMiamapAndDrawTriangle(t *testing.T) {
|
|
img0 := ebiten.NewImage(32, 32)
|
|
img1 := ebiten.NewImage(128, 128)
|
|
img2 := ebiten.NewImage(128, 128)
|
|
|
|
// Fill img1 red and create img1's mipmap
|
|
img1.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(0.25, 0.25)
|
|
op.Filter = ebiten.FilterLinear
|
|
img0.DrawImage(img1, op)
|
|
|
|
// Call DrawTriangle on img1 and fill it with green
|
|
img2.Fill(color.RGBA{G: 0xff, A: 0xff})
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 128,
|
|
DstY: 0,
|
|
SrcX: 128,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: 128,
|
|
SrcX: 0,
|
|
SrcY: 128,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 128,
|
|
DstY: 128,
|
|
SrcX: 128,
|
|
SrcY: 128,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
img1.DrawTriangles(vs, []uint16{0, 1, 2, 1, 2, 3}, img2, nil)
|
|
|
|
// Draw img1 (green) again. Confirm mipmap is correctly updated.
|
|
img0.Clear()
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(0.25, 0.25)
|
|
op.Filter = ebiten.FilterLinear
|
|
img0.DrawImage(img1, op)
|
|
|
|
w, h := img0.Bounds().Dx(), img0.Bounds().Dy()
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
c := img0.At(i, j).(color.RGBA)
|
|
if c.R != 0 {
|
|
t.Errorf("img0.At(%d, %d): red want %d got %d", i, j, 0, c.R)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageSubImageAt(t *testing.T) {
|
|
img := ebiten.NewImage(16, 16)
|
|
img.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
got := img.SubImage(image.Rect(1, 1, 16, 16)).At(0, 0).(color.RGBA)
|
|
want := color.RGBA{}
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
got = img.SubImage(image.Rect(1, 1, 16, 16)).At(1, 1).(color.RGBA)
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageSubImageSize(t *testing.T) {
|
|
img := ebiten.NewImage(16, 16)
|
|
img.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
got := img.SubImage(image.Rect(1, 1, 16, 16)).Bounds().Dx()
|
|
want := 15
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageDrawImmediately(t *testing.T) {
|
|
const w, h = 16, 16
|
|
img0 := ebiten.NewImage(w, h)
|
|
img1 := ebiten.NewImage(w, h)
|
|
// Do not manipulate img0 here.
|
|
|
|
img0.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img0.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img0.At(%d, %d): got %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
img0.DrawImage(img1, nil)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img0.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img0.At(%d, %d): got %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #669, #759
|
|
func TestImageLinearFilterGlitch(t *testing.T) {
|
|
const w, h = 200, 12
|
|
const scale = 1.2
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(int(math.Floor(w*scale)), h)
|
|
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := i + w*j
|
|
if j < 3 {
|
|
pix[4*idx] = 0xff
|
|
pix[4*idx+1] = 0xff
|
|
pix[4*idx+2] = 0xff
|
|
pix[4*idx+3] = 0xff
|
|
} else {
|
|
pix[4*idx] = 0
|
|
pix[4*idx+1] = 0
|
|
pix[4*idx+2] = 0
|
|
pix[4*idx+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
for _, f := range []ebiten.Filter{ebiten.FilterNearest, ebiten.FilterLinear} {
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(scale, 1)
|
|
op.Filter = f
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 1; j < h-1; j++ {
|
|
offset := int(math.Ceil(scale))
|
|
for i := offset; i < int(math.Floor(w*scale))-offset; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if j < 3 {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
} else {
|
|
want = color.RGBA{A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): filter: %d, got: %v, want: %v", i, j, f, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #1212
|
|
func TestImageLinearFilterGlitch2(t *testing.T) {
|
|
const w, h = 100, 100
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
idx := 0
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if i+j < 100 {
|
|
pix[4*idx] = 0
|
|
pix[4*idx+1] = 0
|
|
pix[4*idx+2] = 0
|
|
pix[4*idx+3] = 0xff
|
|
} else {
|
|
pix[4*idx] = 0xff
|
|
pix[4*idx+1] = 0xff
|
|
pix[4*idx+2] = 0xff
|
|
pix[4*idx+3] = 0xff
|
|
}
|
|
idx++
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Filter = ebiten.FilterLinear
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if i+j < 100 {
|
|
want = color.RGBA{A: 0xff}
|
|
} else {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageAddressRepeat(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
if 4 <= i && i < 8 && 4 <= j && j < 8 {
|
|
pix[idx] = byte(i-4) * 0x10
|
|
pix[idx+1] = byte(j-4) * 0x10
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
} else {
|
|
pix[idx] = 0
|
|
pix[idx+1] = 0
|
|
pix[idx+2] = 0xff
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.Address = ebiten.AddressRepeat
|
|
dst.DrawTriangles(vs, is, src.SubImage(image.Rect(4, 4, 8, 8)).(*ebiten.Image), op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: byte(i%4) * 0x10, G: byte(j%4) * 0x10, A: 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageAddressRepeatNegativePosition(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
if 4 <= i && i < 8 && 4 <= j && j < 8 {
|
|
pix[idx] = byte(i-4) * 0x10
|
|
pix[idx+1] = byte(j-4) * 0x10
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
} else {
|
|
pix[idx] = 0
|
|
pix[idx+1] = 0
|
|
pix[idx+2] = 0xff
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: -w,
|
|
SrcY: -h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: -h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: -w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.Address = ebiten.AddressRepeat
|
|
dst.DrawTriangles(vs, is, src.SubImage(image.Rect(4, 4, 8, 8)).(*ebiten.Image), op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: byte(i%4) * 0x10, G: byte(j%4) * 0x10, A: 0xff}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageWritePixelsAfterClear(t *testing.T) {
|
|
const w, h = 256, 256
|
|
img := ebiten.NewImage(w, h)
|
|
img.WritePixels(make([]byte, 4*w*h))
|
|
// Clear used to call DrawImage to clear the image, which was the cause of crash. It is because after
|
|
// DrawImage is called, WritePixels for a region is forbidden.
|
|
//
|
|
// Now WritePixels was always called at Clear instead.
|
|
img.Clear()
|
|
img.WritePixels(make([]byte, 4*w*h))
|
|
|
|
// The test passes if this doesn't crash.
|
|
}
|
|
|
|
func TestImageSet(t *testing.T) {
|
|
type Pt struct {
|
|
X, Y int
|
|
}
|
|
|
|
const w, h = 16, 16
|
|
img := ebiten.NewImage(w, h)
|
|
colors := map[Pt]color.RGBA{
|
|
{1, 2}: {3, 4, 5, 6},
|
|
{7, 8}: {9, 10, 11, 12},
|
|
{13, 14}: {15, 16, 17, 18},
|
|
{-1, -1}: {19, 20, 21, 22},
|
|
}
|
|
|
|
for p, c := range colors {
|
|
img.Set(p.X, p.Y, c)
|
|
}
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if c, ok := colors[Pt{i, j}]; ok {
|
|
want = c
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageSetAndDraw(t *testing.T) {
|
|
type Pt struct {
|
|
X, Y int
|
|
}
|
|
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
colors := map[Pt]color.RGBA{
|
|
{1, 2}: {3, 4, 5, 6},
|
|
{7, 8}: {9, 10, 11, 12},
|
|
{13, 14}: {15, 16, 17, 18},
|
|
}
|
|
for p, c := range colors {
|
|
src.Set(p.X, p.Y, c)
|
|
dst.Set(p.X+1, p.Y+1, c)
|
|
}
|
|
|
|
dst.DrawImage(src, nil)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if c, ok := colors[Pt{i, j}]; ok {
|
|
want = c
|
|
}
|
|
if c, ok := colors[Pt{i - 1, j - 1}]; ok {
|
|
want = c
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
src.Clear()
|
|
dst.Clear()
|
|
for p, c := range colors {
|
|
src.Set(p.X, p.Y, c)
|
|
dst.Set(p.X+1, p.Y+1, c)
|
|
}
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(2, 2)
|
|
dst.DrawImage(src.SubImage(image.Rect(2, 2, w-2, h-2)).(*ebiten.Image), op)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if 2 <= i && 2 <= j && i < w-2 && j < h-2 {
|
|
if c, ok := colors[Pt{i, j}]; ok {
|
|
want = c
|
|
}
|
|
}
|
|
if c, ok := colors[Pt{i - 1, j - 1}]; ok {
|
|
want = c
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageAlphaOnBlack(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src0 := ebiten.NewImage(w, h)
|
|
src1 := ebiten.NewImage(w, h)
|
|
dst0 := ebiten.NewImage(w, h)
|
|
dst1 := ebiten.NewImage(w, h)
|
|
|
|
pix0 := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if (i/3)%2 == (j/3)%2 {
|
|
pix0[4*(i+j*w)] = 0xff
|
|
pix0[4*(i+j*w)+1] = 0xff
|
|
pix0[4*(i+j*w)+2] = 0xff
|
|
pix0[4*(i+j*w)+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src0.WritePixels(pix0)
|
|
|
|
pix1 := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if (i/3)%2 == (j/3)%2 {
|
|
pix1[4*(i+j*w)] = 0xff
|
|
pix1[4*(i+j*w)+1] = 0xff
|
|
pix1[4*(i+j*w)+2] = 0xff
|
|
pix1[4*(i+j*w)+3] = 0xff
|
|
} else {
|
|
pix1[4*(i+j*w)] = 0
|
|
pix1[4*(i+j*w)+1] = 0
|
|
pix1[4*(i+j*w)+2] = 0
|
|
pix1[4*(i+j*w)+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src1.WritePixels(pix1)
|
|
|
|
dst0.Fill(color.Black)
|
|
dst1.Fill(color.Black)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(0.5, 0.5)
|
|
op.Filter = ebiten.FilterLinear
|
|
dst0.DrawImage(src0, op)
|
|
dst1.DrawImage(src1, op)
|
|
|
|
gray := false
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst0.At(i, j)
|
|
want := dst1.At(i, j)
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
if r := got.(color.RGBA).R; 0 < r && r < 255 {
|
|
gray = true
|
|
}
|
|
}
|
|
}
|
|
if !gray {
|
|
t.Errorf("gray must be included in the results but not")
|
|
}
|
|
}
|
|
|
|
func TestImageDrawTrianglesWithSubImage(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if 4 <= i && i < 8 && 4 <= j && j < 8 {
|
|
pix[4*(i+j*w)] = 0xff
|
|
pix[4*(i+j*w)+1] = 0
|
|
pix[4*(i+j*w)+2] = 0
|
|
pix[4*(i+j*w)+3] = 0xff
|
|
} else {
|
|
pix[4*(i+j*w)] = 0
|
|
pix[4*(i+j*w)+1] = 0xff
|
|
pix[4*(i+j*w)+2] = 0
|
|
pix[4*(i+j*w)+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.Address = ebiten.AddressClampToZero
|
|
dst.DrawTriangles(vs, is, src.SubImage(image.Rect(4, 4, 8, 8)).(*ebiten.Image), op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if 4 <= i && i < 8 && 4 <= j && j < 8 {
|
|
want = src.At(i, j).(color.RGBA)
|
|
}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #823
|
|
func TestImageAtAfterDisposingSubImage(t *testing.T) {
|
|
img := ebiten.NewImage(16, 16)
|
|
img.Set(0, 0, color.White)
|
|
img.SubImage(image.Rect(0, 0, 16, 16))
|
|
runtime.GC()
|
|
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
want64 := color.RGBA64{R: 0xffff, G: 0xffff, B: 0xffff, A: 0xffff}
|
|
got := img.At(0, 0)
|
|
if got != want {
|
|
t.Errorf("At(0,0) got: %v, want: %v", got, want)
|
|
}
|
|
got = img.RGBA64At(0, 0)
|
|
if got != want64 {
|
|
t.Errorf("RGBA64At(0,0) got: %v, want: %v", got, want)
|
|
}
|
|
|
|
img.Set(0, 1, color.White)
|
|
sub := img.SubImage(image.Rect(0, 0, 16, 16)).(*ebiten.Image)
|
|
sub.Dispose()
|
|
|
|
got = img.At(0, 1)
|
|
if got != want {
|
|
t.Errorf("At(0,1) got: %v, want: %v", got, want64)
|
|
}
|
|
got = img.RGBA64At(0, 1)
|
|
if got != want64 {
|
|
t.Errorf("RGBA64At(0,1) got: %v, want: %v", got, want64)
|
|
}
|
|
}
|
|
|
|
func TestImageAtAfterDeallocateSubImage(t *testing.T) {
|
|
img := ebiten.NewImage(16, 16)
|
|
img.Set(0, 0, color.White)
|
|
img.SubImage(image.Rect(0, 0, 16, 16))
|
|
runtime.GC()
|
|
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
want64 := color.RGBA64{R: 0xffff, G: 0xffff, B: 0xffff, A: 0xffff}
|
|
got := img.At(0, 0)
|
|
if got != want {
|
|
t.Errorf("At(0,0) got: %v, want: %v", got, want)
|
|
}
|
|
got = img.RGBA64At(0, 0)
|
|
if got != want64 {
|
|
t.Errorf("RGBA64At(0,0) got: %v, want: %v", got, want)
|
|
}
|
|
|
|
img.Set(0, 1, color.White)
|
|
sub := img.SubImage(image.Rect(0, 0, 16, 16)).(*ebiten.Image)
|
|
sub.Deallocate()
|
|
|
|
got = img.At(0, 1)
|
|
if got != want {
|
|
t.Errorf("At(0,1) got: %v, want: %v", got, want64)
|
|
}
|
|
got = img.RGBA64At(0, 1)
|
|
if got != want64 {
|
|
t.Errorf("RGBA64At(0,1) got: %v, want: %v", got, want64)
|
|
}
|
|
}
|
|
|
|
func TestImageSubImageSubImage(t *testing.T) {
|
|
img := ebiten.NewImage(16, 16)
|
|
img.Fill(color.White)
|
|
sub0 := img.SubImage(image.Rect(0, 0, 12, 12)).(*ebiten.Image)
|
|
sub1 := sub0.SubImage(image.Rect(4, 4, 16, 16)).(*ebiten.Image)
|
|
cases := []struct {
|
|
X int
|
|
Y int
|
|
Color color.RGBA
|
|
}{
|
|
{
|
|
X: 0,
|
|
Y: 0,
|
|
Color: color.RGBA{},
|
|
},
|
|
{
|
|
X: 4,
|
|
Y: 4,
|
|
Color: color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff},
|
|
},
|
|
{
|
|
X: 15,
|
|
Y: 15,
|
|
Color: color.RGBA{},
|
|
},
|
|
}
|
|
for _, c := range cases {
|
|
got := sub1.At(c.X, c.Y)
|
|
want := c.Color
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", c.X, c.Y, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #839
|
|
func TestImageTooSmallMipmap(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
src.Fill(color.White)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1, 0.24)
|
|
op.Filter = ebiten.FilterLinear
|
|
dst.DrawImage(src.SubImage(image.Rect(5, 0, 6, 16)).(*ebiten.Image), op)
|
|
got := dst.At(0, 0).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageZeroSizedMipmap(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Filter = ebiten.FilterLinear
|
|
dst.DrawImage(src.SubImage(image.ZR).(*ebiten.Image), op)
|
|
}
|
|
|
|
// Issue #898
|
|
func TestImageFillingAndEdges(t *testing.T) {
|
|
const (
|
|
srcw, srch = 16, 16
|
|
dstw, dsth = 256, 16
|
|
)
|
|
|
|
src := ebiten.NewImage(srcw, srch)
|
|
dst := ebiten.NewImage(dstw, dsth)
|
|
|
|
src.Fill(color.White)
|
|
dst.Fill(color.Black)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(float64(dstw-2)/float64(srcw), float64(dsth-2)/float64(srch))
|
|
op.GeoM.Translate(1, 1)
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 0; j < dsth; j++ {
|
|
for i := 0; i < dstw; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if i == 0 || i == dstw-1 || j == 0 || j == dsth-1 {
|
|
want = color.RGBA{A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageDrawTrianglesAndMutateArgs(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
clr := color.RGBA{R: 0xff, A: 0xff}
|
|
src.Fill(clr)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
vs[0].SrcX = w
|
|
vs[0].SrcY = h
|
|
is[5] = 0
|
|
|
|
for j := 0; j < w; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := clr
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got %v, want %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageWritePixelsOnSubImage(t *testing.T) {
|
|
dst := ebiten.NewImage(17, 31)
|
|
dst.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
pix0 := make([]byte, 4*5*3)
|
|
idx := 0
|
|
for j := 0; j < 3; j++ {
|
|
for i := 0; i < 5; i++ {
|
|
pix0[4*idx] = 0
|
|
pix0[4*idx+1] = 0xff
|
|
pix0[4*idx+2] = 0
|
|
pix0[4*idx+3] = 0xff
|
|
idx++
|
|
}
|
|
}
|
|
r0 := image.Rect(4, 5, 9, 8)
|
|
dst.SubImage(r0).(*ebiten.Image).WritePixels(pix0)
|
|
|
|
pix1 := make([]byte, 4*5*3)
|
|
idx = 0
|
|
for j := 0; j < 3; j++ {
|
|
for i := 0; i < 5; i++ {
|
|
pix1[4*idx] = 0
|
|
pix1[4*idx+1] = 0
|
|
pix1[4*idx+2] = 0xff
|
|
pix1[4*idx+3] = 0xff
|
|
idx++
|
|
}
|
|
}
|
|
r1 := image.Rect(11, 10, 16, 13)
|
|
dst.SubImage(r1).(*ebiten.Image).WritePixels(pix1)
|
|
|
|
// Clear the pixels. This should not affect the result.
|
|
idx = 0
|
|
for j := 0; j < 3; j++ {
|
|
for i := 0; i < 5; i++ {
|
|
pix1[4*idx] = 0
|
|
pix1[4*idx+1] = 0
|
|
pix1[4*idx+2] = 0
|
|
pix1[4*idx+3] = 0
|
|
idx++
|
|
}
|
|
}
|
|
|
|
for j := 0; j < 31; j++ {
|
|
for i := 0; i < 17; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
p := image.Pt(i, j)
|
|
switch {
|
|
case p.In(r0):
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
case p.In(r1):
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageDrawTrianglesWithColorM(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst0 := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.White)
|
|
|
|
vs0 := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.ColorM.Scale(0.2, 0.4, 0.6, 0.8)
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
dst0.DrawTriangles(vs0, is, src, op)
|
|
|
|
for _, format := range []ebiten.ColorScaleMode{
|
|
ebiten.ColorScaleModeStraightAlpha,
|
|
ebiten.ColorScaleModePremultipliedAlpha,
|
|
} {
|
|
format := format
|
|
t.Run(fmt.Sprintf("format%d", format), func(t *testing.T) {
|
|
var cr, cg, cb, ca float32
|
|
switch format {
|
|
case ebiten.ColorScaleModeStraightAlpha:
|
|
// The values are the same as ColorM.Scale
|
|
cr = 0.2
|
|
cg = 0.4
|
|
cb = 0.6
|
|
ca = 0.8
|
|
case ebiten.ColorScaleModePremultipliedAlpha:
|
|
cr = 0.2 * 0.8
|
|
cg = 0.4 * 0.8
|
|
cb = 0.6 * 0.8
|
|
ca = 0.8
|
|
}
|
|
vs1 := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: cr,
|
|
ColorG: cg,
|
|
ColorB: cb,
|
|
ColorA: ca,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: cr,
|
|
ColorG: cg,
|
|
ColorB: cb,
|
|
ColorA: ca,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: cr,
|
|
ColorG: cg,
|
|
ColorB: cb,
|
|
ColorA: ca,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: cr,
|
|
ColorG: cg,
|
|
ColorB: cb,
|
|
ColorA: ca,
|
|
},
|
|
}
|
|
|
|
dst1 := ebiten.NewImage(w, h)
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.ColorScaleMode = format
|
|
dst1.DrawTriangles(vs1, is, src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst0.At(i, j)
|
|
want := dst1.At(i, j)
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestImageDrawTrianglesInterpolatesColors(t *testing.T) {
|
|
const w, h = 3, 1
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.White)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 0,
|
|
ColorB: 0,
|
|
ColorA: 0,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 0,
|
|
ColorG: 1,
|
|
ColorB: 0,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 0,
|
|
ColorB: 0,
|
|
ColorA: 0,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 0,
|
|
ColorG: 1,
|
|
ColorB: 0,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
|
|
for _, format := range []ebiten.ColorScaleMode{
|
|
ebiten.ColorScaleModeStraightAlpha,
|
|
ebiten.ColorScaleModePremultipliedAlpha,
|
|
} {
|
|
format := format
|
|
t.Run(fmt.Sprintf("format%d", format), func(t *testing.T) {
|
|
dst := ebiten.NewImage(w, h)
|
|
dst.Fill(color.RGBA{B: 0xff, A: 0xff})
|
|
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.ColorScaleMode = format
|
|
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
got := dst.At(1, 0).(color.RGBA)
|
|
|
|
// Correct color interpolation uses the alpha channel
|
|
// and notices that colors on the left side of the texture are fully transparent.
|
|
var want color.RGBA
|
|
switch format {
|
|
case ebiten.ColorScaleModeStraightAlpha:
|
|
want = color.RGBA{G: 0x80, B: 0x80, A: 0xff}
|
|
case ebiten.ColorScaleModePremultipliedAlpha:
|
|
want = color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0xff}
|
|
}
|
|
|
|
if !sameColors(got, want, 2) {
|
|
t.Errorf("At(1, 0): got: %v, want: %v", got, want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestImageDrawTrianglesShaderInterpolatesValues(t *testing.T) {
|
|
const w, h = 3, 1
|
|
src := ebiten.NewImage(w, h)
|
|
dst := ebiten.NewImage(w, h)
|
|
src.Fill(color.White)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 0,
|
|
ColorB: 0,
|
|
ColorA: 0,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 0,
|
|
ColorG: 1,
|
|
ColorB: 0,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 0,
|
|
ColorB: 0,
|
|
ColorA: 0,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 0,
|
|
ColorG: 1,
|
|
ColorB: 0,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
dst.Fill(color.RGBA{B: 0xff, A: 0xff})
|
|
op := &ebiten.DrawTrianglesShaderOptions{
|
|
Images: [4]*ebiten.Image{src, nil, nil, nil},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
shader, err := ebiten.NewShader([]byte(`
|
|
package main
|
|
func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
|
|
return color
|
|
}
|
|
`))
|
|
if err != nil {
|
|
t.Fatalf("could not compile shader: %v", err)
|
|
}
|
|
dst.DrawTrianglesShader(vs, is, shader, op)
|
|
|
|
got := dst.At(1, 0).(color.RGBA)
|
|
|
|
// Shaders get each color value interpolated independently.
|
|
want := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0xff}
|
|
|
|
if !sameColors(got, want, 2) {
|
|
t.Errorf("At(1, 0): got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
// Issue #1137
|
|
func TestImageDrawOver(t *testing.T) {
|
|
const (
|
|
w = 320
|
|
h = 240
|
|
)
|
|
dst := ebiten.NewImage(w, h)
|
|
src := image.NewUniform(color.RGBA{R: 0xff, A: 0xff})
|
|
// This must not cause infinite-loop.
|
|
draw.Draw(dst, dst.Bounds(), src, image.ZP, draw.Over)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageDrawDisposedImage(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawImage must panic but not")
|
|
}
|
|
}()
|
|
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := ebiten.NewImage(16, 16)
|
|
src.Dispose()
|
|
dst.DrawImage(src, nil)
|
|
}
|
|
|
|
func TestImageDrawDeallocatedImage(t *testing.T) {
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := ebiten.NewImage(16, 16)
|
|
src.Deallocate()
|
|
// DrawImage must not panic.
|
|
dst.DrawImage(src, nil)
|
|
}
|
|
|
|
func TestImageDrawTrianglesDisposedImage(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawTriangles must panic but not")
|
|
}
|
|
}()
|
|
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := ebiten.NewImage(16, 16)
|
|
src.Dispose()
|
|
vs := make([]ebiten.Vertex, 4)
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
}
|
|
|
|
func TestImageDrawTrianglesDeallocateImage(t *testing.T) {
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := ebiten.NewImage(16, 16)
|
|
src.Deallocate()
|
|
vs := make([]ebiten.Vertex, 4)
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
// DrawTriangles must not panic.
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
}
|
|
|
|
// #1137
|
|
func BenchmarkImageDrawOver(b *testing.B) {
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := image.NewUniform(color.Black)
|
|
for n := 0; n < b.N; n++ {
|
|
draw.Draw(dst, dst.Bounds(), src, image.ZP, draw.Over)
|
|
}
|
|
}
|
|
|
|
// Issue #1171
|
|
func TestImageFloatTranslate(t *testing.T) {
|
|
const w, h = 32, 32
|
|
|
|
for s := 2; s <= 8; s++ {
|
|
s := s
|
|
t.Run(fmt.Sprintf("scale%d", s), func(t *testing.T) {
|
|
check := func(src *ebiten.Image) {
|
|
dst := ebiten.NewImage(w*(s+1), h*(s+1))
|
|
dst.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(float64(s), float64(s))
|
|
op.GeoM.Translate(0, 0.501)
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 0; j < h*s+1; j++ {
|
|
for i := 0; i < w*s; i++ {
|
|
got := dst.At(i, j)
|
|
x := byte(0xff)
|
|
if j > 0 {
|
|
x = (byte(j) - 1) / byte(s)
|
|
}
|
|
want := color.RGBA{R: x, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
t.Run("image", func(t *testing.T) {
|
|
src := ebiten.NewImage(w, h)
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
pix[4*(j*w+i)] = byte(j)
|
|
pix[4*(j*w+i)+3] = 0xff
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
check(src)
|
|
})
|
|
|
|
t.Run("subimage", func(t *testing.T) {
|
|
src := ebiten.NewImage(w*s, h*s)
|
|
pix := make([]byte, 4*(w*s)*(h*s))
|
|
for j := 0; j < h*s; j++ {
|
|
for i := 0; i < w*s; i++ {
|
|
pix[4*(j*(w*s)+i)] = byte(j)
|
|
pix[4*(j*(w*s)+i)+3] = 0xff
|
|
}
|
|
}
|
|
src.WritePixels(pix)
|
|
check(src.SubImage(image.Rect(0, 0, w, h)).(*ebiten.Image))
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
// Issue #1213
|
|
func TestImageColorMCopy(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
for k := 0; k < 256; k++ {
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.ColorM.Translate(1, 1, 1, float64(k)/0xff)
|
|
op.Blend = ebiten.BlendCopy
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: byte(k), G: byte(k), B: byte(k), A: byte(k)}
|
|
if !sameColors(got, want, 1) {
|
|
t.Fatalf("dst.At(%d, %d), k: %d: got %v, want %v", i, j, k, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: Do we have to guarantee this behavior? See #1222
|
|
func TestImageWritePixelsAndModifyPixels(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix[idx] = 0xff
|
|
pix[idx+1] = 0
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
src.WritePixels(pix)
|
|
|
|
// Modify pix after WritePixels
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix[idx] = 0
|
|
pix[idx+1] = 0xff
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
// Ensure that src's pixels are actually used
|
|
dst.DrawImage(src, nil)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := src.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("src.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageCompositeModeMultiply(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
dst.Fill(color.RGBA{R: 0x10, G: 0x20, B: 0x30, A: 0x40})
|
|
src.Fill(color.RGBA{R: 0x50, G: 0x60, B: 0x70, A: 0x80})
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.CompositeMode = ebiten.CompositeModeMultiply
|
|
dst.DrawImage(src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{
|
|
R: byte(math.Floor((0x10 / 255.0) * (0x50 / 255.0) * 255)),
|
|
G: byte(math.Floor((0x20 / 255.0) * (0x60 / 255.0) * 255)),
|
|
B: byte(math.Floor((0x30 / 255.0) * (0x70 / 255.0) * 255)),
|
|
A: byte(math.Floor((0x40 / 255.0) * (0x80 / 255.0) * 255)),
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #1269
|
|
func TestImageZeroTriangle(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(1, 1)
|
|
|
|
vs := []ebiten.Vertex{}
|
|
is := []uint16{}
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
}
|
|
|
|
// Issue #1398
|
|
func TestImageDrawImageTooBigScale(t *testing.T) {
|
|
dst := ebiten.NewImage(1, 1)
|
|
src := ebiten.NewImage(1, 1)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(1e20, 1e20)
|
|
dst.DrawImage(src, op)
|
|
}
|
|
|
|
// Issue #1398
|
|
func TestImageDrawImageTooSmallScale(t *testing.T) {
|
|
dst := ebiten.NewImage(1, 1)
|
|
src := ebiten.NewImage(1, 1)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Filter = ebiten.FilterLinear
|
|
op.GeoM.Scale(1e-10, 1e-10)
|
|
dst.DrawImage(src, op)
|
|
}
|
|
|
|
// Issue #1399
|
|
func TestImageDrawImageCannotAllocateImageForMipmap(t *testing.T) {
|
|
dst := ebiten.NewImage(1, 1)
|
|
src := ebiten.NewImage(maxImageSize, maxImageSize)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Scale(64, 64)
|
|
dst.DrawImage(src, op)
|
|
dst.At(0, 0)
|
|
}
|
|
|
|
func TestImageNewImageWithZeroSize(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawImage must panic but not")
|
|
}
|
|
}()
|
|
|
|
_ = ebiten.NewImage(0, 1)
|
|
}
|
|
|
|
func TestImageNewImageFromImageWithZeroSize(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawImage must panic but not")
|
|
}
|
|
}()
|
|
|
|
img := image.NewRGBA(image.Rect(0, 0, 0, 1))
|
|
_ = ebiten.NewImageFromImage(img)
|
|
}
|
|
|
|
func TestImageClip(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
dst.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
src.Fill(color.RGBA{G: 0xff, A: 0xff})
|
|
|
|
dst.SubImage(image.Rect(4, 5, 12, 14)).(*ebiten.Image).DrawImage(src, nil)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if 4 <= i && i < 12 && 5 <= j && j < 14 {
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #1691
|
|
func TestImageSubImageFill(t *testing.T) {
|
|
dst := ebiten.NewImage(3, 3).SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
|
|
dst.Fill(color.White)
|
|
for j := 0; j < 3; j++ {
|
|
for i := 0; i < 3; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
if i == 1 && j == 1 {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
dst = ebiten.NewImage(17, 31).SubImage(image.Rect(3, 4, 8, 10)).(*ebiten.Image)
|
|
dst.Fill(color.White)
|
|
for j := 0; j < 31; j++ {
|
|
for i := 0; i < 17; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
if 3 <= i && i < 8 && 4 <= j && j < 10 {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageEvenOdd(t *testing.T) {
|
|
whiteImage := ebiten.NewImage(3, 3)
|
|
whiteImage.Fill(color.White)
|
|
emptySubImage := whiteImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
|
|
|
|
vs0 := []ebiten.Vertex{
|
|
{
|
|
DstX: 1, DstY: 1, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 15, DstY: 1, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 1, DstY: 15, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 15, DstY: 15, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
}
|
|
is0 := []uint16{0, 1, 2, 1, 2, 3}
|
|
|
|
vs1 := []ebiten.Vertex{
|
|
{
|
|
DstX: 2, DstY: 2, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 14, DstY: 2, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 2, DstY: 14, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 14, DstY: 14, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
}
|
|
is1 := []uint16{4, 5, 6, 5, 6, 7}
|
|
|
|
vs2 := []ebiten.Vertex{
|
|
{
|
|
DstX: 3, DstY: 3, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 13, DstY: 3, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 3, DstY: 13, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 13, DstY: 13, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
}
|
|
is2 := []uint16{8, 9, 10, 9, 10, 11}
|
|
|
|
// Draw all the vertices once. The even-odd rule is applied for all the vertices once.
|
|
dst := ebiten.NewImage(16, 16)
|
|
op := &ebiten.DrawTrianglesOptions{
|
|
FillRule: ebiten.EvenOdd,
|
|
}
|
|
dst.DrawTriangles(append(append(vs0, vs1...), vs2...), append(append(is0, is1...), is2...), emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 3 <= i && i < 13 && 3 <= j && j < 13:
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
case 2 <= i && i < 14 && 2 <= j && j < 14:
|
|
want = color.RGBA{}
|
|
case 1 <= i && i < 15 && 1 <= j && j < 15:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
default:
|
|
want = color.RGBA{}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Do the same thing but with a little shift. This confirms that the underlying stencil buffer is cleared correctly.
|
|
for i := range vs0 {
|
|
vs0[i].DstX++
|
|
vs0[i].DstY++
|
|
}
|
|
for i := range vs1 {
|
|
vs1[i].DstX++
|
|
vs1[i].DstY++
|
|
}
|
|
for i := range vs2 {
|
|
vs2[i].DstX++
|
|
vs2[i].DstY++
|
|
}
|
|
dst.Clear()
|
|
dst.DrawTriangles(append(append(vs0, vs1...), vs2...), append(append(is0, is1...), is2...), emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 4 <= i && i < 14 && 4 <= j && j < 14:
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
case 3 <= i && i < 15 && 3 <= j && j < 15:
|
|
want = color.RGBA{}
|
|
case 2 <= i && i < 16 && 2 <= j && j < 16:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
default:
|
|
want = color.RGBA{}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Do the same thing but with split DrawTriangle calls. This confirms that the even-odd rule is applied for one call.
|
|
for i := range vs0 {
|
|
vs0[i].DstX--
|
|
vs0[i].DstY--
|
|
}
|
|
for i := range vs1 {
|
|
vs1[i].DstX--
|
|
vs1[i].DstY--
|
|
}
|
|
for i := range vs2 {
|
|
vs2[i].DstX--
|
|
vs2[i].DstY--
|
|
}
|
|
dst.Clear()
|
|
// Use the first indices set.
|
|
dst.DrawTriangles(vs0, is0, emptySubImage, op)
|
|
dst.DrawTriangles(vs1, is0, emptySubImage, op)
|
|
dst.DrawTriangles(vs2, is0, emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 3 <= i && i < 13 && 3 <= j && j < 13:
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
case 2 <= i && i < 14 && 2 <= j && j < 14:
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
case 1 <= i && i < 15 && 1 <= j && j < 15:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
default:
|
|
want = color.RGBA{}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageFillRule(t *testing.T) {
|
|
for _, fillRule := range []ebiten.FillRule{ebiten.FillAll, ebiten.NonZero, ebiten.EvenOdd} {
|
|
fillRule := fillRule
|
|
var name string
|
|
switch fillRule {
|
|
case ebiten.FillAll:
|
|
name = "FillAll"
|
|
case ebiten.NonZero:
|
|
name = "NonZero"
|
|
case ebiten.EvenOdd:
|
|
name = "EvenOdd"
|
|
}
|
|
t.Run(name, func(t *testing.T) {
|
|
whiteImage := ebiten.NewImage(3, 3)
|
|
whiteImage.Fill(color.White)
|
|
emptySubImage := whiteImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
|
|
|
|
// The outside rectangle (clockwise)
|
|
vs0 := []ebiten.Vertex{
|
|
{
|
|
DstX: 1, DstY: 1, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 15, DstY: 1, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 15, DstY: 15, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 1, DstY: 15, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 0, ColorB: 0, ColorA: 1,
|
|
},
|
|
}
|
|
is0 := []uint16{0, 1, 2, 2, 3, 0}
|
|
|
|
// An inside rectangle (clockwise)
|
|
vs1 := []ebiten.Vertex{
|
|
{
|
|
DstX: 2, DstY: 2, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 7, DstY: 2, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 7, DstY: 7, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 2, DstY: 7, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 1, ColorB: 0, ColorA: 1,
|
|
},
|
|
}
|
|
is1 := []uint16{4, 5, 6, 6, 7, 4}
|
|
|
|
// An inside rectangle (counter-clockwise)
|
|
vs2 := []ebiten.Vertex{
|
|
{
|
|
DstX: 9, DstY: 9, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 14, DstY: 9, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 14, DstY: 14, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 9, DstY: 14, SrcX: 1, SrcY: 1,
|
|
ColorR: 0, ColorG: 0, ColorB: 1, ColorA: 1,
|
|
},
|
|
}
|
|
is2 := []uint16{8, 11, 10, 10, 9, 8}
|
|
|
|
// Draw all the vertices once. The even-odd rule is applied for all the vertices once.
|
|
dst := ebiten.NewImage(16, 16)
|
|
op := &ebiten.DrawTrianglesOptions{
|
|
FillRule: fillRule,
|
|
}
|
|
dst.DrawTriangles(append(append(vs0, vs1...), vs2...), append(append(is0, is1...), is2...), emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 2 <= i && i < 7 && 2 <= j && j < 7:
|
|
if fillRule != ebiten.EvenOdd {
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
}
|
|
case 9 <= i && i < 14 && 9 <= j && j < 14:
|
|
if fillRule == ebiten.FillAll {
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
}
|
|
case 1 <= i && i < 15 && 1 <= j && j < 15:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Do the same thing but with a little shift. This confirms that the underlying stencil buffer is cleared correctly.
|
|
for i := range vs0 {
|
|
vs0[i].DstX++
|
|
vs0[i].DstY++
|
|
}
|
|
for i := range vs1 {
|
|
vs1[i].DstX++
|
|
vs1[i].DstY++
|
|
}
|
|
for i := range vs2 {
|
|
vs2[i].DstX++
|
|
vs2[i].DstY++
|
|
}
|
|
dst.Clear()
|
|
dst.DrawTriangles(append(append(vs0, vs1...), vs2...), append(append(is0, is1...), is2...), emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 3 <= i && i < 8 && 3 <= j && j < 8:
|
|
if fillRule != ebiten.EvenOdd {
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
}
|
|
case 10 <= i && i < 15 && 10 <= j && j < 15:
|
|
if fillRule == ebiten.FillAll {
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
}
|
|
case 2 <= i && i < 16 && 2 <= j && j < 16:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Do the same thing but with split DrawTriangle calls. This confirms that fill rules are applied for one call.
|
|
for i := range vs0 {
|
|
vs0[i].DstX--
|
|
vs0[i].DstY--
|
|
}
|
|
for i := range vs1 {
|
|
vs1[i].DstX--
|
|
vs1[i].DstY--
|
|
}
|
|
for i := range vs2 {
|
|
vs2[i].DstX--
|
|
vs2[i].DstY--
|
|
}
|
|
dst.Clear()
|
|
dst.DrawTriangles(vs0, []uint16{0, 1, 2, 2, 3, 0}, emptySubImage, op)
|
|
dst.DrawTriangles(vs1, []uint16{0, 1, 2, 2, 3, 0}, emptySubImage, op)
|
|
dst.DrawTriangles(vs2, []uint16{0, 3, 2, 2, 1, 0}, emptySubImage, op)
|
|
for j := 0; j < 16; j++ {
|
|
for i := 0; i < 16; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
switch {
|
|
case 2 <= i && i < 7 && 2 <= j && j < 7:
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
case 9 <= i && i < 14 && 9 <= j && j < 14:
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
case 1 <= i && i < 15 && 1 <= j && j < 15:
|
|
want = color.RGBA{R: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// #1658
|
|
func BenchmarkColorMScale(b *testing.B) {
|
|
r := rand.Float64
|
|
dst := ebiten.NewImage(16, 16)
|
|
src := ebiten.NewImage(16, 16)
|
|
for n := 0; n < b.N; n++ {
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.ColorM.Scale(r(), r(), r(), r())
|
|
dst.DrawImage(src, op)
|
|
}
|
|
}
|
|
|
|
func TestImageMoreIndicesThanMaxUint16(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.White)
|
|
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
vs := make([]ebiten.Vertex, 3)
|
|
is := make([]uint16, 65538)
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
// The next draw call should work well (and this is likely batched).
|
|
vs = []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is = []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageMoreVerticesThanMaxUint16(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.White)
|
|
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
vs := make([]ebiten.Vertex, math.MaxUint16+1)
|
|
is := make([]uint16, 3)
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
// The next draw call should work well (and this is likely batched).
|
|
vs = []ebiten.Vertex{
|
|
{
|
|
DstX: 0,
|
|
DstY: 0,
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: 0,
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0,
|
|
DstY: h,
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w,
|
|
DstY: h,
|
|
SrcX: w,
|
|
SrcY: h,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is = []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageNewImageFromEbitenImage(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix[idx] = byte(i)
|
|
pix[idx+1] = byte(j)
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
img0 := ebiten.NewImage(w, h)
|
|
img0.WritePixels(pix)
|
|
img1 := ebiten.NewImageFromImage(img0)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img1.At(i, j)
|
|
want := color.RGBA{R: byte(i), G: byte(j), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img1.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
img2 := ebiten.NewImageFromImage(img0.SubImage(image.Rect(4, 4, 12, 12)))
|
|
for j := 0; j < h/2; j++ {
|
|
for i := 0; i < w/2; i++ {
|
|
got := img2.At(i, j)
|
|
want := color.RGBA{R: byte(i + 4), G: byte(j + 4), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img1.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOptionsUnmanaged(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
pix := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix[idx] = byte(i)
|
|
pix[idx+1] = byte(j)
|
|
pix[idx+2] = 0
|
|
pix[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
op := &ebiten.NewImageOptions{
|
|
Unmanaged: true,
|
|
}
|
|
img := ebiten.NewImageWithOptions(image.Rect(0, 0, w, h), op)
|
|
img.WritePixels(pix)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: byte(i), G: byte(j), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOptionsNegativeBoundsWritePixels(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
pix0 := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix0[idx] = byte(i)
|
|
pix0[idx+1] = byte(j)
|
|
pix0[idx+2] = 0
|
|
pix0[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
const offset = -8
|
|
img := ebiten.NewImageWithOptions(image.Rect(offset, offset, w+offset, h+offset), nil)
|
|
img.WritePixels(pix0)
|
|
|
|
for j := offset; j < h+offset; j++ {
|
|
for i := offset; i < w+offset; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: byte(i - offset), G: byte(j - offset), A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
pix1 := make([]byte, 4*(w/2)*(h/2))
|
|
for j := 0; j < h/2; j++ {
|
|
for i := 0; i < w/2; i++ {
|
|
idx := 4 * (i + j*w/2)
|
|
pix1[idx] = 0
|
|
pix1[idx+1] = 0
|
|
pix1[idx+2] = 0xff
|
|
pix1[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
const offset2 = -4
|
|
sub := image.Rect(offset2, offset2, w/2+offset2, h/2+offset2)
|
|
img.SubImage(sub).(*ebiten.Image).WritePixels(pix1)
|
|
for j := offset; j < h+offset; j++ {
|
|
for i := offset; i < w+offset; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: byte(i - offset), G: byte(j - offset), A: 0xff}
|
|
if image.Pt(i, j).In(sub) {
|
|
want = color.RGBA{B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOptionsNegativeBoundsSet(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
|
|
pix0 := make([]byte, 4*w*h)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
idx := 4 * (i + j*w)
|
|
pix0[idx] = byte(i)
|
|
pix0[idx+1] = byte(j)
|
|
pix0[idx+2] = 0
|
|
pix0[idx+3] = 0xff
|
|
}
|
|
}
|
|
|
|
const offset = -8
|
|
img := ebiten.NewImageWithOptions(image.Rect(offset, offset, w+offset, h+offset), nil)
|
|
img.WritePixels(pix0)
|
|
img.Set(-1, -2, color.RGBA{})
|
|
|
|
for j := offset; j < h+offset; j++ {
|
|
for i := offset; i < w+offset; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: byte(i - offset), G: byte(j - offset), A: 0xff}
|
|
if i == -1 && j == -2 {
|
|
want = color.RGBA{}
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOptionsNegativeBoundsDrawImage(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
offset = -8
|
|
)
|
|
dst := ebiten.NewImageWithOptions(image.Rect(offset, offset, w+offset, h+offset), nil)
|
|
src := ebiten.NewImageWithOptions(image.Rect(-1, -1, 1, 1), nil)
|
|
pix := make([]byte, 4*2*2)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(-1, -1)
|
|
op.GeoM.Scale(2, 3)
|
|
dst.DrawImage(src, op)
|
|
for j := offset; j < h+offset; j++ {
|
|
for i := offset; i < w+offset; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
if -2 <= i && i < 2 && -3 <= j && j < 3 {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageOptionsNegativeBoundsDrawTriangles(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
offset = -8
|
|
)
|
|
dst := ebiten.NewImageWithOptions(image.Rect(offset, offset, w+offset, h+offset), nil)
|
|
src := ebiten.NewImageWithOptions(image.Rect(-1, -1, 1, 1), nil)
|
|
pix := make([]byte, 4*2*2)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
src.WritePixels(pix)
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: -2,
|
|
DstY: -3,
|
|
SrcX: -1,
|
|
SrcY: -1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 2,
|
|
DstY: -3,
|
|
SrcX: 1,
|
|
SrcY: -1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: -2,
|
|
DstY: 3,
|
|
SrcX: -1,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 2,
|
|
DstY: 3,
|
|
SrcX: 1,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
for j := offset; j < h+offset; j++ {
|
|
for i := offset; i < w+offset; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
if -2 <= i && i < 2 && -3 <= j && j < 3 {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageFromImageOptions(t *testing.T) {
|
|
r := image.Rect(-2, -3, 4, 5)
|
|
pix := make([]byte, 4*r.Dx()*r.Dy())
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
src := &image.RGBA{
|
|
Pix: pix,
|
|
Stride: 4 * 2,
|
|
Rect: r,
|
|
}
|
|
|
|
op := &ebiten.NewImageFromImageOptions{
|
|
PreserveBounds: true,
|
|
}
|
|
img := ebiten.NewImageFromImageWithOptions(src, op)
|
|
if got, want := img.Bounds(), r; got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
for j := r.Min.Y; j < r.Max.Y; j++ {
|
|
for i := r.Min.X; i < r.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageFromEbitenImageOptions(t *testing.T) {
|
|
r := image.Rect(-2, -3, 4, 5)
|
|
src := ebiten.NewImageWithOptions(r, nil)
|
|
pix := make([]byte, 4*r.Dx()*r.Dy())
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
src.WritePixels(pix)
|
|
|
|
op := &ebiten.NewImageFromImageOptions{
|
|
PreserveBounds: true,
|
|
}
|
|
img := ebiten.NewImageFromImageWithOptions(src, op)
|
|
if got, want := img.Bounds(), r; got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
for j := r.Min.Y; j < r.Max.Y; j++ {
|
|
for i := r.Min.X; i < r.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #2159
|
|
func TestImageOptionsFill(t *testing.T) {
|
|
r0 := image.Rect(-2, -3, 4, 5)
|
|
img := ebiten.NewImageWithOptions(r0, nil)
|
|
img.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
for j := r0.Min.Y; j < r0.Max.Y; j++ {
|
|
for i := r0.Min.X; i < r0.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
r1 := image.Rect(-1, -2, 3, 4)
|
|
img.SubImage(r1).(*ebiten.Image).Fill(color.RGBA{G: 0xff, A: 0xff})
|
|
for j := r0.Min.Y; j < r0.Max.Y; j++ {
|
|
for i := r0.Min.X; i < r0.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if image.Pt(i, j).In(r1) {
|
|
want = color.RGBA{G: 0xff, A: 0xff}
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #2159
|
|
func TestImageOptionsClear(t *testing.T) {
|
|
r0 := image.Rect(-2, -3, 4, 5)
|
|
img := ebiten.NewImageWithOptions(r0, nil)
|
|
img.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
img.Clear()
|
|
for j := r0.Min.Y; j < r0.Max.Y; j++ {
|
|
for i := r0.Min.X; i < r0.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
img.Fill(color.RGBA{R: 0xff, A: 0xff})
|
|
r1 := image.Rect(-1, -2, 3, 4)
|
|
img.SubImage(r1).(*ebiten.Image).Clear()
|
|
for j := r0.Min.Y; j < r0.Max.Y; j++ {
|
|
for i := r0.Min.X; i < r0.Max.X; i++ {
|
|
got := img.At(i, j)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if image.Pt(i, j).In(r1) {
|
|
want = color.RGBA{}
|
|
}
|
|
if got != want {
|
|
t.Errorf("img.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #2178
|
|
func TestImageTooManyDrawImage(t *testing.T) {
|
|
src := ebiten.NewImage(1, 1)
|
|
src.Fill(color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff})
|
|
|
|
const (
|
|
w = 256
|
|
h = 256
|
|
)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
op.GeoM.Reset()
|
|
op.GeoM.Translate(float64(i), float64(j))
|
|
dst.DrawImage(src, op)
|
|
}
|
|
}
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if got, want := dst.At(i, j), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageTooManyDrawImage2(t *testing.T) {
|
|
src := ebiten.NewImage(1, 1)
|
|
src.Fill(color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff})
|
|
|
|
const (
|
|
w = 512
|
|
h = 512
|
|
)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
posToColor := func(i, j int) color.RGBA {
|
|
return color.RGBA{
|
|
R: byte(i),
|
|
G: byte(j),
|
|
B: 0xff,
|
|
A: 0xff,
|
|
}
|
|
}
|
|
|
|
op := &ebiten.DrawImageOptions{}
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
op.GeoM.Reset()
|
|
op.GeoM.Translate(float64(i), float64(j))
|
|
op.ColorScale.Reset()
|
|
op.ColorScale.ScaleWithColor(posToColor(i, j))
|
|
dst.DrawImage(src, op)
|
|
}
|
|
}
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if got, want := dst.At(i, j).(color.RGBA), posToColor(i, j); !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Issue #2178
|
|
func TestImageTooManyDrawTriangles(t *testing.T) {
|
|
img := ebiten.NewImage(3, 3)
|
|
img.Fill(color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff})
|
|
src := img.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
|
|
|
|
const (
|
|
w = 128
|
|
h = 64
|
|
)
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
var vertices []ebiten.Vertex
|
|
var indices []uint16
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
n := uint16(len(vertices))
|
|
vertices = append(vertices,
|
|
ebiten.Vertex{
|
|
DstX: float32(i),
|
|
DstY: float32(j),
|
|
SrcX: 1,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
ebiten.Vertex{
|
|
DstX: float32(i) + 1,
|
|
DstY: float32(j),
|
|
SrcX: 2,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
ebiten.Vertex{
|
|
DstX: float32(i),
|
|
DstY: float32(j) + 1,
|
|
SrcX: 1,
|
|
SrcY: 2,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
ebiten.Vertex{
|
|
DstX: float32(i) + 1,
|
|
DstY: float32(j) + 1,
|
|
SrcX: 2,
|
|
SrcY: 2,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
)
|
|
indices = append(indices, n, n+1, n+2, n+1, n+2, n+3)
|
|
}
|
|
}
|
|
dst.DrawTriangles(vertices, indices, src, nil)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
if got, want := dst.At(i, j), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageSetOverSet(t *testing.T) {
|
|
img := ebiten.NewImage(1, 1)
|
|
img.Set(0, 0, color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff})
|
|
if got, want := img.At(0, 0), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
// Apply the change by 'Set' by calling DrawImage.
|
|
dummy := ebiten.NewImage(1, 1)
|
|
img.DrawImage(dummy, nil)
|
|
if got, want := img.At(0, 0), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
img.Set(0, 0, color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80})
|
|
if got, want := img.At(0, 0), (color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
|
|
// Apply the change by 'Set' again.
|
|
img.DrawImage(dummy, nil)
|
|
if got, want := img.At(0, 0), (color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
// Issue #2204
|
|
func TestImageTooManyConstantBuffersInDirectX(t *testing.T) {
|
|
src := ebiten.NewImage(3, 3)
|
|
src.Fill(color.White)
|
|
src = src.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
|
|
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
DstX: 0, DstY: 0, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 1, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 16, DstY: 0, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 1, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 0, DstY: 16, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 1, ColorB: 1, ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 16, DstY: 16, SrcX: 1, SrcY: 1,
|
|
ColorR: 1, ColorG: 1, ColorB: 1, ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
|
|
dst0 := ebiten.NewImage(16, 16)
|
|
dst1 := ebiten.NewImage(16, 16)
|
|
op := &ebiten.DrawTrianglesOptions{
|
|
FillRule: ebiten.EvenOdd,
|
|
}
|
|
for i := 0; i < 100; i++ {
|
|
dst0.DrawTriangles(vs, is, src, op)
|
|
dst1.DrawTriangles(vs, is, src, op)
|
|
}
|
|
|
|
if got, want := dst0.At(0, 0), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
if got, want := dst1.At(0, 0), (color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageColorMAndScale(t *testing.T) {
|
|
const w, h = 16, 16
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
src.Fill(color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80})
|
|
vs := []ebiten.Vertex{
|
|
{
|
|
SrcX: 0,
|
|
SrcY: 0,
|
|
DstX: 0,
|
|
DstY: 0,
|
|
ColorR: 0.5,
|
|
ColorG: 0.25,
|
|
ColorB: 0.5,
|
|
ColorA: 0.75,
|
|
},
|
|
{
|
|
SrcX: w,
|
|
SrcY: 0,
|
|
DstX: w,
|
|
DstY: 0,
|
|
ColorR: 0.5,
|
|
ColorG: 0.25,
|
|
ColorB: 0.5,
|
|
ColorA: 0.75,
|
|
},
|
|
{
|
|
SrcX: 0,
|
|
SrcY: h,
|
|
DstX: 0,
|
|
DstY: h,
|
|
ColorR: 0.5,
|
|
ColorG: 0.25,
|
|
ColorB: 0.5,
|
|
ColorA: 0.75,
|
|
},
|
|
{
|
|
SrcX: w,
|
|
SrcY: h,
|
|
DstX: w,
|
|
DstY: h,
|
|
ColorR: 0.5,
|
|
ColorG: 0.25,
|
|
ColorB: 0.5,
|
|
ColorA: 0.75,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2, 1, 2, 3}
|
|
|
|
for _, format := range []ebiten.ColorScaleMode{
|
|
ebiten.ColorScaleModeStraightAlpha,
|
|
ebiten.ColorScaleModePremultipliedAlpha,
|
|
} {
|
|
format := format
|
|
t.Run(fmt.Sprintf("format%d", format), func(t *testing.T) {
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.ColorM.Translate(0.25, 0.25, 0.25, 0)
|
|
op.ColorScaleMode = format
|
|
dst.DrawTriangles(vs, is, src, op)
|
|
|
|
got := dst.At(0, 0).(color.RGBA)
|
|
alphaBeforeScale := 0.5
|
|
var want color.RGBA
|
|
switch format {
|
|
case ebiten.ColorScaleModeStraightAlpha:
|
|
want = color.RGBA{
|
|
R: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.5 * 0.75)),
|
|
G: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.25 * 0.75)),
|
|
B: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.5 * 0.75)),
|
|
A: byte(math.Floor(0xff * alphaBeforeScale * 0.75)),
|
|
}
|
|
case ebiten.ColorScaleModePremultipliedAlpha:
|
|
want = color.RGBA{
|
|
R: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.5)),
|
|
G: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.25)),
|
|
B: byte(math.Floor(0xff * (0.5/alphaBeforeScale + 0.25) * alphaBeforeScale * 0.5)),
|
|
A: byte(math.Floor(0xff * alphaBeforeScale * 0.75)),
|
|
}
|
|
}
|
|
if !sameColors(got, want, 2) {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestImageBlendOperation(t *testing.T) {
|
|
const w, h = 16, 1
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
dstColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 17), byte(4*i*17 + 1), byte(4*i*17 + 2), byte(4*i*17 + 3)
|
|
}
|
|
srcColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 13), byte(4*i*13 + 1), byte(4*i*13 + 2), byte(4*i*13 + 3)
|
|
}
|
|
clamp := func(x int) byte {
|
|
if x > 255 {
|
|
return 255
|
|
}
|
|
if x < 0 {
|
|
return 0
|
|
}
|
|
return byte(x)
|
|
}
|
|
|
|
dstPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := dstColor(i)
|
|
dstPix[4*i] = r
|
|
dstPix[4*i+1] = g
|
|
dstPix[4*i+2] = b
|
|
dstPix[4*i+3] = a
|
|
}
|
|
srcPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := srcColor(i)
|
|
srcPix[4*i] = r
|
|
srcPix[4*i+1] = g
|
|
srcPix[4*i+2] = b
|
|
srcPix[4*i+3] = a
|
|
}
|
|
src.WritePixels(srcPix)
|
|
|
|
operations := []ebiten.BlendOperation{
|
|
ebiten.BlendOperationAdd,
|
|
ebiten.BlendOperationSubtract,
|
|
ebiten.BlendOperationReverseSubtract,
|
|
}
|
|
for _, rgbOp := range operations {
|
|
for _, alphaOp := range operations {
|
|
// Reset the destination state.
|
|
dst.WritePixels(dstPix)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Blend = ebiten.Blend{
|
|
BlendFactorSourceRGB: ebiten.BlendFactorOne,
|
|
BlendFactorSourceAlpha: ebiten.BlendFactorOne,
|
|
BlendFactorDestinationRGB: ebiten.BlendFactorOne,
|
|
BlendFactorDestinationAlpha: ebiten.BlendFactorOne,
|
|
BlendOperationRGB: rgbOp,
|
|
BlendOperationAlpha: alphaOp,
|
|
}
|
|
dst.DrawImage(src, op)
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, 0).(color.RGBA)
|
|
|
|
sr, sg, sb, sa := srcColor(i)
|
|
dr, dg, db, da := dstColor(i)
|
|
|
|
var want color.RGBA
|
|
switch rgbOp {
|
|
case ebiten.BlendOperationAdd:
|
|
want.R = clamp(int(sr) + int(dr))
|
|
want.G = clamp(int(sg) + int(dg))
|
|
want.B = clamp(int(sb) + int(db))
|
|
case ebiten.BlendOperationSubtract:
|
|
want.R = clamp(int(sr) - int(dr))
|
|
want.G = clamp(int(sg) - int(dg))
|
|
want.B = clamp(int(sb) - int(db))
|
|
case ebiten.BlendOperationReverseSubtract:
|
|
want.R = clamp(int(dr) - int(sr))
|
|
want.G = clamp(int(dg) - int(sg))
|
|
want.B = clamp(int(db) - int(sb))
|
|
}
|
|
switch alphaOp {
|
|
case ebiten.BlendOperationAdd:
|
|
want.A = clamp(int(sa) + int(da))
|
|
case ebiten.BlendOperationSubtract:
|
|
want.A = clamp(int(sa) - int(da))
|
|
case ebiten.BlendOperationReverseSubtract:
|
|
want.A = clamp(int(da) - int(sa))
|
|
}
|
|
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, 0): operations: %d, %d: got: %v, want: %v", i, rgbOp, alphaOp, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageBlendOperationMinAndMax(t *testing.T) {
|
|
const w, h = 16, 1
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
dstColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 17), byte(4*i*17 + 1), byte(4*i*17 + 2), byte(4*i*17 + 3)
|
|
}
|
|
srcColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 13), byte(4*i*13 + 1), byte(4*i*13 + 2), byte(4*i*13 + 3)
|
|
}
|
|
|
|
dstPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := dstColor(i)
|
|
dstPix[4*i] = r
|
|
dstPix[4*i+1] = g
|
|
dstPix[4*i+2] = b
|
|
dstPix[4*i+3] = a
|
|
}
|
|
srcPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := srcColor(i)
|
|
srcPix[4*i] = r
|
|
srcPix[4*i+1] = g
|
|
srcPix[4*i+2] = b
|
|
srcPix[4*i+3] = a
|
|
}
|
|
src.WritePixels(srcPix)
|
|
|
|
operations := []ebiten.BlendOperation{
|
|
ebiten.BlendOperationMin,
|
|
ebiten.BlendOperationMax,
|
|
}
|
|
for _, rgbOp := range operations {
|
|
for _, alphaOp := range operations {
|
|
// Reset the destination state.
|
|
dst.WritePixels(dstPix)
|
|
op := &ebiten.DrawImageOptions{}
|
|
// Use the default blend factors, and confirm that the factors are ignored.
|
|
op.Blend = ebiten.Blend{
|
|
BlendFactorSourceRGB: ebiten.BlendFactorDefault,
|
|
BlendFactorSourceAlpha: ebiten.BlendFactorDefault,
|
|
BlendFactorDestinationRGB: ebiten.BlendFactorDefault,
|
|
BlendFactorDestinationAlpha: ebiten.BlendFactorDefault,
|
|
BlendOperationRGB: rgbOp,
|
|
BlendOperationAlpha: alphaOp,
|
|
}
|
|
dst.DrawImage(src, op)
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, 0).(color.RGBA)
|
|
|
|
sr, sg, sb, sa := srcColor(i)
|
|
dr, dg, db, da := dstColor(i)
|
|
|
|
var want color.RGBA
|
|
switch rgbOp {
|
|
case ebiten.BlendOperationMin:
|
|
want.R = min(sr, dr)
|
|
want.G = min(sg, dg)
|
|
want.B = min(sb, db)
|
|
case ebiten.BlendOperationMax:
|
|
want.R = max(sr, dr)
|
|
want.G = max(sg, dg)
|
|
want.B = max(sb, db)
|
|
}
|
|
switch alphaOp {
|
|
case ebiten.BlendOperationMin:
|
|
want.A = min(sa, da)
|
|
case ebiten.BlendOperationMax:
|
|
want.A = max(sa, da)
|
|
}
|
|
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, 0): operations: %d, %d: got: %v, want: %v", i, rgbOp, alphaOp, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageBlendFactor(t *testing.T) {
|
|
if skipTooSlowTests(t) {
|
|
return
|
|
}
|
|
|
|
const w, h = 16, 1
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
dstColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 17), byte(4*i*17 + 1), byte(4*i*17 + 2), byte(4*i*17 + 3)
|
|
}
|
|
srcColor := func(i int) (byte, byte, byte, byte) {
|
|
return byte(4 * i * 13), byte(4*i*13 + 1), byte(4*i*13 + 2), byte(4*i*13 + 3)
|
|
}
|
|
colorToFloats := func(r, g, b, a byte) (float64, float64, float64, float64) {
|
|
return float64(r) / 0xff, float64(g) / 0xff, float64(b) / 0xff, float64(a) / 0xff
|
|
}
|
|
clamp := func(x int) byte {
|
|
if x > 255 {
|
|
return 255
|
|
}
|
|
if x < 0 {
|
|
return 0
|
|
}
|
|
return byte(x)
|
|
}
|
|
|
|
dstPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := dstColor(i)
|
|
dstPix[4*i] = r
|
|
dstPix[4*i+1] = g
|
|
dstPix[4*i+2] = b
|
|
dstPix[4*i+3] = a
|
|
}
|
|
srcPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w; i++ {
|
|
r, g, b, a := srcColor(i)
|
|
srcPix[4*i] = r
|
|
srcPix[4*i+1] = g
|
|
srcPix[4*i+2] = b
|
|
srcPix[4*i+3] = a
|
|
}
|
|
src.WritePixels(srcPix)
|
|
|
|
factors := []ebiten.BlendFactor{
|
|
ebiten.BlendFactorZero,
|
|
ebiten.BlendFactorOne,
|
|
ebiten.BlendFactorSourceColor,
|
|
ebiten.BlendFactorOneMinusSourceColor,
|
|
ebiten.BlendFactorSourceAlpha,
|
|
ebiten.BlendFactorOneMinusSourceAlpha,
|
|
ebiten.BlendFactorDestinationColor,
|
|
ebiten.BlendFactorOneMinusDestinationColor,
|
|
ebiten.BlendFactorDestinationAlpha,
|
|
ebiten.BlendFactorOneMinusDestinationAlpha,
|
|
}
|
|
for _, srcRGBFactor := range factors {
|
|
for _, srcAlphaFactor := range factors {
|
|
for _, dstRGBFactor := range factors {
|
|
for _, dstAlphaFactor := range factors {
|
|
// Reset the destination state.
|
|
dst.WritePixels(dstPix)
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.Blend = ebiten.Blend{
|
|
BlendFactorSourceRGB: srcRGBFactor,
|
|
BlendFactorSourceAlpha: srcAlphaFactor,
|
|
BlendFactorDestinationRGB: dstRGBFactor,
|
|
BlendFactorDestinationAlpha: dstAlphaFactor,
|
|
BlendOperationRGB: ebiten.BlendOperationAdd,
|
|
BlendOperationAlpha: ebiten.BlendOperationAdd,
|
|
}
|
|
dst.DrawImage(src, op)
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, 0).(color.RGBA)
|
|
|
|
sr, sg, sb, sa := colorToFloats(srcColor(i))
|
|
dr, dg, db, da := colorToFloats(dstColor(i))
|
|
|
|
var r, g, b, a float64
|
|
|
|
switch srcRGBFactor {
|
|
case ebiten.BlendFactorZero:
|
|
r += 0 * sr
|
|
g += 0 * sg
|
|
b += 0 * sb
|
|
case ebiten.BlendFactorOne:
|
|
r += 1 * sr
|
|
g += 1 * sg
|
|
b += 1 * sb
|
|
case ebiten.BlendFactorSourceColor:
|
|
r += sr * sr
|
|
g += sg * sg
|
|
b += sb * sb
|
|
case ebiten.BlendFactorOneMinusSourceColor:
|
|
r += (1 - sr) * sr
|
|
g += (1 - sg) * sg
|
|
b += (1 - sb) * sb
|
|
case ebiten.BlendFactorSourceAlpha:
|
|
r += sa * sr
|
|
g += sa * sg
|
|
b += sa * sb
|
|
case ebiten.BlendFactorOneMinusSourceAlpha:
|
|
r += (1 - sa) * sr
|
|
g += (1 - sa) * sg
|
|
b += (1 - sa) * sb
|
|
case ebiten.BlendFactorDestinationColor:
|
|
r += dr * sr
|
|
g += dg * sg
|
|
b += db * sb
|
|
case ebiten.BlendFactorOneMinusDestinationColor:
|
|
r += (1 - dr) * sr
|
|
g += (1 - dg) * sg
|
|
b += (1 - db) * sb
|
|
case ebiten.BlendFactorDestinationAlpha:
|
|
r += da * sr
|
|
g += da * sg
|
|
b += da * sb
|
|
case ebiten.BlendFactorOneMinusDestinationAlpha:
|
|
r += (1 - da) * sr
|
|
g += (1 - da) * sg
|
|
b += (1 - da) * sb
|
|
}
|
|
switch srcAlphaFactor {
|
|
case ebiten.BlendFactorZero:
|
|
a += 0 * sa
|
|
case ebiten.BlendFactorOne:
|
|
a += 1 * sa
|
|
case ebiten.BlendFactorSourceColor, ebiten.BlendFactorSourceAlpha:
|
|
a += sa * sa
|
|
case ebiten.BlendFactorOneMinusSourceColor, ebiten.BlendFactorOneMinusSourceAlpha:
|
|
a += (1 - sa) * sa
|
|
case ebiten.BlendFactorDestinationColor, ebiten.BlendFactorDestinationAlpha:
|
|
a += da * sa
|
|
case ebiten.BlendFactorOneMinusDestinationColor, ebiten.BlendFactorOneMinusDestinationAlpha:
|
|
a += (1 - da) * sa
|
|
}
|
|
|
|
switch dstRGBFactor {
|
|
case ebiten.BlendFactorZero:
|
|
r += 0 * dr
|
|
g += 0 * dg
|
|
b += 0 * db
|
|
case ebiten.BlendFactorOne:
|
|
r += 1 * dr
|
|
g += 1 * dg
|
|
b += 1 * db
|
|
case ebiten.BlendFactorSourceColor:
|
|
r += sr * dr
|
|
g += sg * dg
|
|
b += sb * db
|
|
case ebiten.BlendFactorOneMinusSourceColor:
|
|
r += (1 - sr) * dr
|
|
g += (1 - sg) * dg
|
|
b += (1 - sb) * db
|
|
case ebiten.BlendFactorSourceAlpha:
|
|
r += sa * dr
|
|
g += sa * dg
|
|
b += sa * db
|
|
case ebiten.BlendFactorOneMinusSourceAlpha:
|
|
r += (1 - sa) * dr
|
|
g += (1 - sa) * dg
|
|
b += (1 - sa) * db
|
|
case ebiten.BlendFactorDestinationColor:
|
|
r += dr * dr
|
|
g += dg * dg
|
|
b += db * db
|
|
case ebiten.BlendFactorOneMinusDestinationColor:
|
|
r += (1 - dr) * dr
|
|
g += (1 - dg) * dg
|
|
b += (1 - db) * db
|
|
case ebiten.BlendFactorDestinationAlpha:
|
|
r += da * dr
|
|
g += da * dg
|
|
b += da * db
|
|
case ebiten.BlendFactorOneMinusDestinationAlpha:
|
|
r += (1 - da) * dr
|
|
g += (1 - da) * dg
|
|
b += (1 - da) * db
|
|
}
|
|
switch dstAlphaFactor {
|
|
case ebiten.BlendFactorZero:
|
|
a += 0 * da
|
|
case ebiten.BlendFactorOne:
|
|
a += 1 * da
|
|
case ebiten.BlendFactorSourceColor, ebiten.BlendFactorSourceAlpha:
|
|
a += sa * da
|
|
case ebiten.BlendFactorOneMinusSourceColor, ebiten.BlendFactorOneMinusSourceAlpha:
|
|
a += (1 - sa) * da
|
|
case ebiten.BlendFactorDestinationColor, ebiten.BlendFactorDestinationAlpha:
|
|
a += da * da
|
|
case ebiten.BlendFactorOneMinusDestinationColor, ebiten.BlendFactorOneMinusDestinationAlpha:
|
|
a += (1 - da) * da
|
|
}
|
|
|
|
want := color.RGBA{
|
|
R: clamp(int(r * 0xff)),
|
|
G: clamp(int(g * 0xff)),
|
|
B: clamp(int(b * 0xff)),
|
|
A: clamp(int(a * 0xff)),
|
|
}
|
|
if !sameColors(got, want, 1) {
|
|
t.Errorf("dst.At(%d, 0): factors: %d, %d, %d, %d: got: %v, want: %v", i, srcRGBFactor, srcAlphaFactor, dstRGBFactor, dstAlphaFactor, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageAntiAlias(t *testing.T) {
|
|
// This value depends on internal/ui.bigOffscreenScale. Sync this.
|
|
const bigOffscreenScale = 2
|
|
|
|
const w, h = 272, 208
|
|
|
|
dst0 := ebiten.NewImage(w, h)
|
|
dst1 := ebiten.NewImage(w, h)
|
|
tmp := ebiten.NewImage(w*bigOffscreenScale, h*bigOffscreenScale)
|
|
src := ebiten.NewImage(3, 3)
|
|
src.Fill(color.RGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88})
|
|
|
|
for _, blend := range []ebiten.Blend{
|
|
{}, // Default
|
|
ebiten.BlendClear,
|
|
ebiten.BlendCopy,
|
|
ebiten.BlendSourceOver,
|
|
ebiten.BlendDestinationOver,
|
|
ebiten.BlendXor,
|
|
ebiten.BlendLighter,
|
|
} {
|
|
rnd := rand.New(rand.NewSource(0))
|
|
max := func(x, y, z byte) byte {
|
|
if x >= y && x >= z {
|
|
return x
|
|
}
|
|
if y >= x && y >= z {
|
|
return y
|
|
}
|
|
return z
|
|
}
|
|
|
|
dstPix := make([]byte, 4*w*h)
|
|
for i := 0; i < w*h; i++ {
|
|
n := rnd.Int()
|
|
r, g, b := byte(n), byte(n>>8), byte(n>>16)
|
|
a := max(r, g, b)
|
|
dstPix[4*i] = r
|
|
dstPix[4*i+1] = g
|
|
dstPix[4*i+2] = b
|
|
dstPix[4*i+3] = a
|
|
}
|
|
dst0.WritePixels(dstPix)
|
|
dst1.WritePixels(dstPix)
|
|
|
|
tmp.Clear()
|
|
|
|
// Create an actual result.
|
|
op := &ebiten.DrawTrianglesOptions{}
|
|
op.Blend = blend
|
|
op.AntiAlias = true
|
|
vs0 := []ebiten.Vertex{
|
|
{
|
|
DstX: w / 4,
|
|
DstY: h / 4,
|
|
SrcX: 1,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 2 * w / 4,
|
|
DstY: h / 4,
|
|
SrcX: 2,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: w / 4,
|
|
DstY: 2 * h / 4,
|
|
SrcX: 1,
|
|
SrcY: 2,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
is := []uint16{0, 1, 2}
|
|
dst0.DrawTriangles(vs0, is, src, op)
|
|
|
|
vs1 := []ebiten.Vertex{
|
|
{
|
|
DstX: 2 * w / 4,
|
|
DstY: 3 * h / 4,
|
|
SrcX: 1,
|
|
SrcY: 2,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 3 * w / 4,
|
|
DstY: 2 * h / 4,
|
|
SrcX: 2,
|
|
SrcY: 1,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
{
|
|
DstX: 3 * w / 4,
|
|
DstY: 3 * h / 4,
|
|
SrcX: 2,
|
|
SrcY: 2,
|
|
ColorR: 1,
|
|
ColorG: 1,
|
|
ColorB: 1,
|
|
ColorA: 1,
|
|
},
|
|
}
|
|
dst0.DrawTriangles(vs1, is, src, op)
|
|
|
|
// Create an expected result.
|
|
// Copy an enlarged destination image to the offscreen.
|
|
opCopy := &ebiten.DrawImageOptions{}
|
|
opCopy.GeoM.Scale(bigOffscreenScale, bigOffscreenScale)
|
|
opCopy.Blend = ebiten.BlendCopy
|
|
tmp.DrawImage(dst1, opCopy)
|
|
|
|
// Render the vertices onto the offscreen.
|
|
for i := range vs0 {
|
|
vs0[i].DstX *= 2
|
|
vs0[i].DstY *= 2
|
|
}
|
|
for i := range vs1 {
|
|
vs1[i].DstX *= 2
|
|
vs1[i].DstY *= 2
|
|
}
|
|
op = &ebiten.DrawTrianglesOptions{}
|
|
op.Blend = blend
|
|
tmp.DrawTriangles(vs0, is, src, op)
|
|
tmp.DrawTriangles(vs1, is, src, op)
|
|
|
|
// Render a shrunk offscreen image onto the destination.
|
|
opShrink := &ebiten.DrawImageOptions{}
|
|
opShrink.GeoM.Scale(1.0/bigOffscreenScale, 1.0/bigOffscreenScale)
|
|
opShrink.Filter = ebiten.FilterLinear
|
|
opShrink.Blend = ebiten.BlendCopy
|
|
dst1.DrawImage(tmp, opShrink)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst0.At(i, j).(color.RGBA)
|
|
want := dst1.At(i, j).(color.RGBA)
|
|
if !sameColors(got, want, 2) {
|
|
t.Errorf("At(%d, %d), blend: %v, got: %v, want: %v", i, j, blend, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestImageColorMScale(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst0 := ebiten.NewImage(w, h)
|
|
dst1 := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.RGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88})
|
|
|
|
// As the ColorM is a diagonal matrix, a built-in shader for a color matrix is NOT used.
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.ColorM.Scale(0.3, 0.4, 0.5, 0.6)
|
|
dst0.DrawImage(src, op)
|
|
|
|
// As the ColorM is not a diagonal matrix, a built-in shader for a color matrix is used.
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.ColorM.Scale(0.3, 0.4, 0.5, 0.6)
|
|
op.ColorM.Translate(0, 0, 0, 1e-4)
|
|
dst1.DrawImage(src, op)
|
|
|
|
got := dst0.At(0, 0)
|
|
want := dst1.At(0, 0)
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageColorScaleAndColorM(t *testing.T) {
|
|
const w, h = 16, 16
|
|
dst0 := ebiten.NewImage(w, h)
|
|
dst1 := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
src.Fill(color.RGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88})
|
|
|
|
// ColorScale is applied to premultiplied-alpha colors.
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.ColorScale.Scale(0.3*0.6, 0.4*0.6, 0.5*0.6, 0.6)
|
|
dst0.DrawImage(src, op)
|
|
|
|
// ColorM.Scale is applied to straight-alpha colors.
|
|
op = &ebiten.DrawImageOptions{}
|
|
op.ColorM.Scale(0.3, 0.4, 0.5, 0.6)
|
|
dst1.DrawImage(src, op)
|
|
|
|
got := dst0.At(0, 0)
|
|
want := dst1.At(0, 0)
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
// Issue #2428
|
|
func TestImageSetAndSubImage(t *testing.T) {
|
|
const w, h = 16, 16
|
|
img := ebiten.NewImage(w, h)
|
|
img.Set(1, 1, color.RGBA{R: 0xff, A: 0xff})
|
|
got := img.SubImage(image.Rect(0, 0, w, h)).At(1, 1).(color.RGBA)
|
|
want := color.RGBA{R: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
// Issue #2611
|
|
func TestImageDrawTrianglesWithGreaterIndexThanVerticesCount(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawTriangles must panic but not")
|
|
}
|
|
}()
|
|
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
src := ebiten.NewImage(w, h)
|
|
|
|
vs := make([]ebiten.Vertex, 4)
|
|
is := []uint16{0, 1, 2, 1, 2, 4}
|
|
dst.DrawTriangles(vs, is, src, nil)
|
|
}
|
|
|
|
// Issue #2611
|
|
func TestImageDrawTrianglesShaderWithGreaterIndexThanVerticesCount(t *testing.T) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("DrawTrianglesShader must panic but not")
|
|
}
|
|
}()
|
|
|
|
const w, h = 16, 16
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
vs := make([]ebiten.Vertex, 4)
|
|
is := []uint16{0, 1, 2, 1, 2, 4}
|
|
shader, err := ebiten.NewShader([]byte(`
|
|
package main
|
|
func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
|
|
return color
|
|
}
|
|
`))
|
|
if err != nil {
|
|
t.Fatalf("could not compile shader: %v", err)
|
|
}
|
|
dst.DrawTrianglesShader(vs, is, shader, nil)
|
|
}
|
|
|
|
// Issue #2733
|
|
func TestImageGeoMAfterDraw(t *testing.T) {
|
|
src := ebiten.NewImage(1, 1)
|
|
dst := ebiten.NewImageWithOptions(image.Rect(-1, -1, 0, 0), nil)
|
|
op0 := &ebiten.DrawImageOptions{}
|
|
dst.DrawImage(src, op0)
|
|
if x, y := op0.GeoM.Apply(0, 0); x != 0 || y != 0 {
|
|
t.Errorf("got: (%0.2f, %0.2f), want: (0, 0)", x, y)
|
|
}
|
|
|
|
s, err := ebiten.NewShader([]byte(`//kage:unit pixels
|
|
|
|
package main
|
|
|
|
func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
|
|
return vec4(1)
|
|
}
|
|
`))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
op1 := &ebiten.DrawRectShaderOptions{}
|
|
dst.DrawRectShader(1, 1, s, op1)
|
|
if x, y := op1.GeoM.Apply(0, 0); x != 0 || y != 0 {
|
|
t.Errorf("got: (%0.2f, %0.2f), want: (0, 0)", x, y)
|
|
}
|
|
}
|
|
|
|
func TestImageWritePixelAndDispose(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
img := ebiten.NewImage(w, h)
|
|
pix := make([]byte, 4*w*h)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
img.WritePixels(pix)
|
|
img.Dispose()
|
|
|
|
// Confirm that any pixel information is invalidated after Dispose is called.
|
|
if got, want := img.At(0, 0), (color.RGBA{}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageWritePixelAndDeallocate(t *testing.T) {
|
|
const (
|
|
w = 16
|
|
h = 16
|
|
)
|
|
img := ebiten.NewImage(w, h)
|
|
pix := make([]byte, 4*w*h)
|
|
for i := range pix {
|
|
pix[i] = 0xff
|
|
}
|
|
img.WritePixels(pix)
|
|
img.Deallocate()
|
|
|
|
// Confirm that any pixel information is cleared after Deallocate is called.
|
|
if got, want := img.At(0, 0), (color.RGBA{}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestImageDrawImageAfterDeallocation(t *testing.T) {
|
|
src, _, err := openEbitenImage()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
return
|
|
}
|
|
|
|
w, h := src.Bounds().Dx(), src.Bounds().Dy()
|
|
dst := ebiten.NewImage(w, h)
|
|
|
|
dst.DrawImage(src, nil)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := src.At(i, j)
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Even after deallocating the image, the image is still available.
|
|
dst.Deallocate()
|
|
|
|
dst.DrawImage(src, nil)
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j)
|
|
want := src.At(i, j)
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|