mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 05:12:18 +02:00
67 lines
2.4 KiB
Go
67 lines
2.4 KiB
Go
// Copyright 2024 The Ebitengine 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 buffered_test
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import (
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"image"
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"testing"
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"github.com/hajimehoshi/ebiten/v2/internal/atlas"
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"github.com/hajimehoshi/ebiten/v2/internal/buffered"
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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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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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func TestMain(m *testing.M) {
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t.MainWithRunLoop(m)
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}
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func TestUnsyncedPixels(t *testing.T) {
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dst := buffered.NewImage(16, 16, atlas.ImageTypeRegular)
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// Add an entry for dotsBuffer at (0, 0).
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dst.WritePixels([]byte{0xff, 0xff, 0xff, 0xff}, image.Rect(0, 0, 1, 1))
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// Merge the entry into the cached pixels.
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// The entry for dotsBuffer is now gone in the current implementation.
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if err := dst.ReadPixels(ui.Get().GraphicsDriverForTesting(), make([]byte, 4*16*16), image.Rect(0, 0, 16, 16)); err != nil {
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t.Fatal(err)
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}
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// Call WritePixels with the outside region of (0, 0).
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dst.WritePixels(make([]byte, 4*2*2), image.Rect(1, 1, 3, 3))
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// Flush unsynced pixel cache.
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src := buffered.NewImage(16, 16, atlas.ImageTypeRegular)
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vs := make([]float32, 4*graphics.VertexFloatCount)
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graphics.QuadVertices(vs, 0, 0, 16, 16, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1)
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is := graphics.QuadIndices()
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dr := image.Rect(0, 0, 16, 16)
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sr := [graphics.ShaderImageCount]image.Rectangle{image.Rect(0, 0, 16, 16)}
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dst.DrawTriangles([graphics.ShaderImageCount]*buffered.Image{src}, vs, is, graphicsdriver.BlendSourceOver, dr, sr, atlas.NearestFilterShader, nil, graphicsdriver.FillAll)
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// Check the result is correct.
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var got [4]byte
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if err := dst.ReadPixels(ui.Get().GraphicsDriverForTesting(), got[:], image.Rect(0, 0, 1, 1)); err != nil {
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t.Fatal(err)
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}
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want := [4]byte{0xff, 0xff, 0xff, 0xff}
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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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