mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 19:58:54 +01:00
117 lines
4.4 KiB
Go
117 lines
4.4 KiB
Go
// Copyright 2021 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 atlas_test
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import (
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"image"
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"image/color"
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"runtime"
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"testing"
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"time"
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"github.com/hajimehoshi/ebiten/v2/internal/atlas"
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"github.com/hajimehoshi/ebiten/v2/internal/graphics"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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etesting "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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func TestShaderFillTwice(t *testing.T) {
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const w, h = 1, 1
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dst := atlas.NewImage(w, h, atlas.ImageTypeRegular)
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vs := quadVertices(w, h, 0, 0, 1)
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is := graphics.QuadIndices()
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dr := image.Rect(0, 0, w, h)
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g := ui.Get().GraphicsDriverForTesting()
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s0 := atlas.NewShader(etesting.ShaderProgramFill(0xff, 0xff, 0xff, 0xff))
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dst.DrawTriangles([graphics.ShaderImageCount]*atlas.Image{}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderImageCount]image.Rectangle{}, s0, nil, graphicsdriver.FillAll)
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// Vertices must be recreated (#1755)
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vs = quadVertices(w, h, 0, 0, 1)
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s1 := atlas.NewShader(etesting.ShaderProgramFill(0x80, 0x80, 0x80, 0xff))
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dst.DrawTriangles([graphics.ShaderImageCount]*atlas.Image{}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderImageCount]image.Rectangle{}, s1, nil, graphicsdriver.FillAll)
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pix := make([]byte, 4*w*h)
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if err := dst.ReadPixels(g, pix, image.Rect(0, 0, w, h)); err != nil {
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t.Error(err)
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}
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if got, want := (color.RGBA{R: pix[0], G: pix[1], B: pix[2], A: pix[3]}), (color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0xff}); 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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func TestImageDrawTwice(t *testing.T) {
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const w, h = 1, 1
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dst := atlas.NewImage(w, h, atlas.ImageTypeRegular)
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src0 := atlas.NewImage(w, h, atlas.ImageTypeRegular)
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src0.WritePixels([]byte{0xff, 0xff, 0xff, 0xff}, image.Rect(0, 0, w, h))
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src1 := atlas.NewImage(w, h, atlas.ImageTypeRegular)
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src1.WritePixels([]byte{0x80, 0x80, 0x80, 0xff}, image.Rect(0, 0, w, h))
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vs := quadVertices(w, h, 0, 0, 1)
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is := graphics.QuadIndices()
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dr := image.Rect(0, 0, w, h)
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dst.DrawTriangles([graphics.ShaderImageCount]*atlas.Image{src0}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderImageCount]image.Rectangle{}, atlas.NearestFilterShader, nil, graphicsdriver.FillAll)
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// Vertices must be recreated (#1755)
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vs = quadVertices(w, h, 0, 0, 1)
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dst.DrawTriangles([graphics.ShaderImageCount]*atlas.Image{src1}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderImageCount]image.Rectangle{}, atlas.NearestFilterShader, nil, graphicsdriver.FillAll)
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pix := make([]byte, 4*w*h)
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if err := dst.ReadPixels(ui.Get().GraphicsDriverForTesting(), pix, image.Rect(0, 0, w, h)); err != nil {
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t.Error(err)
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}
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if got, want := (color.RGBA{R: pix[0], G: pix[1], B: pix[2], A: pix[3]}), (color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0xff}); 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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func TestGCShader(t *testing.T) {
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s := atlas.NewShader(etesting.ShaderProgramFill(0xff, 0xff, 0xff, 0xff))
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// Use the shader to initialize it.
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const w, h = 1, 1
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dst := atlas.NewImage(w, h, atlas.ImageTypeRegular)
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vs := quadVertices(w, h, 0, 0, 1)
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is := graphics.QuadIndices()
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dr := image.Rect(0, 0, w, h)
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dst.DrawTriangles([graphics.ShaderImageCount]*atlas.Image{}, vs, is, graphicsdriver.BlendCopy, dr, [graphics.ShaderImageCount]image.Rectangle{}, s, nil, graphicsdriver.FillAll)
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// Ensure other objects are GCed, as GC appends deferred functions for collected objects.
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runtime.GC()
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// Get the difference of the number of deferred functions before and after s is GCed.
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c := atlas.DeferredFuncCountForTesting()
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runtime.KeepAlive(s)
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runtime.GC()
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// In theory, a finalizer might be called a little later. Try a few times.
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for i := 0; i < 3; i++ {
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diff := atlas.DeferredFuncCountForTesting() - c
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if diff == 1 {
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return
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}
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time.Sleep(time.Millisecond)
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}
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diff := atlas.DeferredFuncCountForTesting() - c
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if got, want := diff, 1; got != want {
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t.Errorf("got: %d, want: %d", got, want)
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}
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}
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