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99e777b0c5
Adjusting pixels is needed to avoid strainge rendering to avoid unexpected rendering (#1171). However, this adjustment caused unexpected holes especially in a thick stroke. This change moves the logic of adjusting pixels from atlas to graphics.QuadVertices so that adjusting works only for DrawImage and DrawRectShader. Updates #1171 Updates #1843
82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
// Copyright 2014 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 graphics_test
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import (
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"testing"
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"github.com/hajimehoshi/ebiten/v2/internal/graphics"
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)
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func TestInternalImageSize(t *testing.T) {
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testCases := []struct {
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expected int
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arg int
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}{
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{256, 255},
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{256, 256},
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{512, 257},
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}
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for _, testCase := range testCases {
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got := graphics.InternalImageSize(testCase.arg)
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wanted := testCase.expected
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if wanted != got {
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t.Errorf("Clp(%d) = %d, wanted %d", testCase.arg, got, wanted)
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}
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}
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}
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func TestAdjustPixel(t *testing.T) {
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tests := []struct {
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X float32
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Y float32
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Delta float32
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}{
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{
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X: -0.1,
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Y: 0.9,
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Delta: 1,
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},
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{
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X: -1,
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Y: 0,
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Delta: 1,
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},
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{
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X: -1.9,
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Y: 1.1,
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Delta: 3,
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},
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{
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X: -2,
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Y: 1,
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Delta: 3,
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},
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}
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for _, tc := range tests {
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if rx, ry := graphics.AdjustDestinationPixelForTesting(tc.X)+tc.Delta, graphics.AdjustDestinationPixelForTesting(tc.Y); rx != ry {
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t.Errorf("adjustDestinationPixel(%f) + 1 must equal to adjustDestinationPixel(%f) but not (%f vs %f)", tc.X, tc.Y, rx, ry)
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}
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}
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}
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func BenchmarkAdjustPixel(b *testing.B) {
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for i := 0; i < b.N; i++ {
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graphics.AdjustDestinationPixelForTesting(float32(i) / 17)
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}
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}
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