mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
f40798b586
Let's keep 'graphics' package as a package for utility functions or testable functions as much as possible.
335 lines
9.0 KiB
Go
335 lines
9.0 KiB
Go
// Copyright 2018 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package shareable_test
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import (
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"errors"
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"image/color"
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"os"
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"runtime"
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"testing"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/internal/driver"
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"github.com/hajimehoshi/ebiten/internal/graphics"
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. "github.com/hajimehoshi/ebiten/internal/shareable"
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"github.com/hajimehoshi/ebiten/internal/testflock"
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)
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func TestMain(m *testing.M) {
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testflock.Lock()
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defer testflock.Unlock()
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code := 0
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regularTermination := errors.New("regular termination")
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f := func(screen *ebiten.Image) error {
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code = m.Run()
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return regularTermination
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}
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if err := ebiten.Run(f, 320, 240, 1, "Test"); err != nil && err != regularTermination {
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panic(err)
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}
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os.Exit(code)
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}
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const bigSize = 2049
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func TestEnsureNotShared(t *testing.T) {
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// Create img1 and img2 with this size so that the next images are allocated
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// with non-upper-left location.
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img1 := NewImage(bigSize, 100)
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defer img1.Dispose()
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// Ensure img1's region is allocated.
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img1.ReplacePixels(make([]byte, 4*bigSize*100))
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img2 := NewImage(100, bigSize)
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defer img2.Dispose()
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img2.ReplacePixels(make([]byte, 4*100*bigSize))
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const size = 32
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img3 := NewImage(size/2, size/2)
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defer img3.Dispose()
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img3.ReplacePixels(make([]byte, (size/2)*(size/2)*4))
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img4 := NewImage(size, size)
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defer img4.Dispose()
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pix := make([]byte, size*size*4)
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for j := 0; j < size; j++ {
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for i := 0; i < size; i++ {
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pix[4*(i+j*size)] = byte(i + j)
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pix[4*(i+j*size)+1] = byte(i + j)
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pix[4*(i+j*size)+2] = byte(i + j)
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pix[4*(i+j*size)+3] = byte(i + j)
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}
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}
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img4.ReplacePixels(pix)
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const (
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dx0 = size / 4
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dy0 = size / 4
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dx1 = size * 3 / 4
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dy1 = size * 3 / 4
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)
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// img4.ensureNotShared() should be called.
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, img3, 0, 0, size/2, size/2, 1, 0, 0, 1, size/4, size/4, 1, 1, 1, 1)
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is := graphics.QuadIndices()
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img4.DrawTriangles(img3, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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want := false
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if got := img4.IsSharedForTesting(); got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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for j := 0; j < size; j++ {
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for i := 0; i < size; i++ {
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r, g, b, a := img4.At(i, j)
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got := color.RGBA{r, g, b, a}
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var want color.RGBA
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if i < dx0 || dx1 <= i || j < dy0 || dy1 <= j {
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c := byte(i + j)
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want = color.RGBA{c, c, c, c}
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}
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if got != want {
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t.Errorf("img4.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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// Check further drawing doesn't cause panic.
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// This bug was fixed by 03dcd948.
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img4.DrawTriangles(img3, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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}
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func TestReshared(t *testing.T) {
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const size = 16
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img0 := NewImage(size, size)
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defer img0.Dispose()
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img0.ReplacePixels(make([]byte, 4*size*size))
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img1 := NewImage(size, size)
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defer img1.Dispose()
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img1.ReplacePixels(make([]byte, 4*size*size))
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if got, want := img1.IsSharedForTesting(), true; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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img2 := NewImage(size, size)
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defer img2.Dispose()
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pix := make([]byte, 4*size*size)
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for j := 0; j < size; j++ {
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for i := 0; i < size; i++ {
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pix[4*(i+j*size)] = byte(i + j)
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pix[4*(i+j*size)+1] = byte(i + j)
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pix[4*(i+j*size)+2] = byte(i + j)
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pix[4*(i+j*size)+3] = byte(i + j)
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}
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}
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img2.ReplacePixels(pix)
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img3 := NewImage(size, size)
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img3.MakeVolatile()
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defer img3.Dispose()
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img1.ReplacePixels(make([]byte, 4*size*size))
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if got, want := img3.IsSharedForTesting(), false; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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// Use img1 as a render target.
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, img2, 0, 0, size, size, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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is := graphics.QuadIndices()
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img1.DrawTriangles(img2, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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if got, want := img1.IsSharedForTesting(), false; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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// Use img1 as a render source.
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for i := 0; i < MaxCountForShare; i++ {
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MakeImagesSharedForTesting()
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img0.DrawTriangles(img1, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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if got, want := img1.IsSharedForTesting(), false; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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}
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MakeImagesSharedForTesting()
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for j := 0; j < size; j++ {
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for i := 0; i < size; i++ {
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want := color.RGBA{byte(i + j), byte(i + j), byte(i + j), byte(i + j)}
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r, g, b, a := img1.At(i, j)
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got := color.RGBA{r, g, b, a}
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if got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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}
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}
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img0.DrawTriangles(img1, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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if got, want := img1.IsSharedForTesting(), true; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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for j := 0; j < size; j++ {
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for i := 0; i < size; i++ {
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want := color.RGBA{byte(i + j), byte(i + j), byte(i + j), byte(i + j)}
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r, g, b, a := img1.At(i, j)
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got := color.RGBA{r, g, b, a}
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if got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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}
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}
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// Use img3 as a render source. img3 never uses a shared texture.
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for i := 0; i < MaxCountForShare*2; i++ {
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MakeImagesSharedForTesting()
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img0.DrawTriangles(img3, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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if got, want := img3.IsSharedForTesting(), false; got != want {
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t.Errorf("got: %v, want: %v", got, want)
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}
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}
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runtime.GC()
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}
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func TestExtend(t *testing.T) {
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const w0, h0 = 100, 100
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img0 := NewImage(w0, h0)
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defer img0.Dispose()
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p0 := make([]byte, 4*w0*h0)
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for i := 0; i < w0*h0; i++ {
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p0[4*i] = byte(i)
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p0[4*i+1] = byte(i)
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p0[4*i+2] = byte(i)
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p0[4*i+3] = byte(i)
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}
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img0.ReplacePixels(p0)
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const w1, h1 = 1025, 100
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img1 := NewImage(w1, h1)
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defer img1.Dispose()
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p1 := make([]byte, 4*w1*h1)
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for i := 0; i < w1*h1; i++ {
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p1[4*i] = byte(i)
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p1[4*i+1] = byte(i)
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p1[4*i+2] = byte(i)
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p1[4*i+3] = byte(i)
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}
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// Ensure to allocate
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img1.ReplacePixels(p1)
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for j := 0; j < h0; j++ {
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for i := 0; i < w0; i++ {
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r, g, b, a := img0.At(i, j)
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got := color.RGBA{r, g, b, a}
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c := byte(i + w0*j)
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want := color.RGBA{c, c, c, c}
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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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for j := 0; j < h1; j++ {
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for i := 0; i < w1; i++ {
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r, g, b, a := img1.At(i, j)
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got := color.RGBA{r, g, b, a}
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c := byte(i + w1*j)
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want := color.RGBA{c, c, c, c}
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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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img0.Dispose()
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img1.Dispose()
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}
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func TestReplacePixelsAfterDrawTriangles(t *testing.T) {
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const w, h = 256, 256
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src := NewImage(w, h)
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defer src.Dispose()
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dst := NewImage(w, h)
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defer dst.Dispose()
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pix := make([]byte, 4*w*h)
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for i := 0; i < w*h; i++ {
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pix[4*i] = byte(i)
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pix[4*i+1] = byte(i)
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pix[4*i+2] = byte(i)
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pix[4*i+3] = byte(i)
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}
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src.ReplacePixels(pix)
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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is := graphics.QuadIndices()
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dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressClampToZero)
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dst.ReplacePixels(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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r, g, b, a := dst.At(i, j)
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got := color.RGBA{r, g, b, a}
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c := byte(i + w*j)
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want := color.RGBA{c, c, c, c}
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if got != want {
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t.Errorf("dst.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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// Issue #887
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func TestSmallImages(t *testing.T) {
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const w, h = 4, 8
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src := NewImage(w, h)
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defer src.Dispose()
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dst := NewImage(w, h)
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defer dst.Dispose()
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pix := make([]byte, 4*w*h)
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for i := 0; i < w*h; i++ {
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pix[4*i] = 0xff
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pix[4*i+1] = 0xff
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pix[4*i+2] = 0xff
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pix[4*i+3] = 0xff
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}
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src.ReplacePixels(pix)
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vs := make([]float32, 4*graphics.VertexFloatNum)
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graphics.PutQuadVertices(vs, src, 0, 0, w, h, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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is := graphics.QuadIndices()
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dst.DrawTriangles(src, vs, is, nil, driver.CompositeModeSourceOver, driver.FilterNearest, driver.AddressClampToZero)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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r, _, _, a := dst.At(i, j)
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if got, want := r, byte(0xff); got != want {
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t.Errorf("At(%d, %d) red: got: %d, want: %d", i, j, got, want)
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}
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if got, want := a, byte(0xff); got != want {
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t.Errorf("At(%d, %d) alpha: got: %d, want: %d", i, j, got, want)
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}
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}
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}
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}
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// TODO: Add tests to extend shareable image out of the main loop
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