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internal/atlas: Add tests to call DrawTriangles twice

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Updates #1755
This commit is contained in:
Hajime Hoshi 2021-08-14 20:05:26 +09:00
parent da08577095
commit 8a6302f9dc
1 changed files with 90 additions and 0 deletions
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internal/atlas/shader_test.go Normal file
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// Copyright 2021 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package atlas_test
import (
"image/color"
"testing"
"github.com/hajimehoshi/ebiten/v2/internal/affine"
. "github.com/hajimehoshi/ebiten/v2/internal/atlas"
"github.com/hajimehoshi/ebiten/v2/internal/driver"
"github.com/hajimehoshi/ebiten/v2/internal/graphics"
etesting "github.com/hajimehoshi/ebiten/v2/internal/testing"
)
func TestShaderFillTwice(t *testing.T) {
const w, h = 1, 1
dst := NewImage(w, h)
vs := quadVertices(w, h, 0, 0, 1)
is := graphics.QuadIndices()
dr := driver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
p0 := etesting.ShaderProgramFill(0xff, 0xff, 0xff, 0xff)
s0 := NewShader(&p0)
dst.DrawTriangles([graphics.ShaderImageNum]*Image{}, vs, is, affine.ColorMIdentity{}, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressUnsafe, dr, driver.Region{}, [graphics.ShaderImageNum - 1][2]float32{}, s0, nil, false)
// Vertices must be recreated (#1755)
vs = quadVertices(w, h, 0, 0, 1)
p1 := etesting.ShaderProgramFill(0x80, 0x80, 0x80, 0xff)
s1 := NewShader(&p1)
dst.DrawTriangles([graphics.ShaderImageNum]*Image{}, vs, is, affine.ColorMIdentity{}, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressUnsafe, dr, driver.Region{}, [graphics.ShaderImageNum - 1][2]float32{}, s1, nil, false)
pix, err := dst.Pixels(0, 0, w, h)
if err != nil {
t.Error(err)
}
if got, want := (color.RGBA{pix[0], pix[1], pix[2], pix[3]}), (color.RGBA{0x80, 0x80, 0x80, 0xff}); got != want {
t.Errorf("got: %v, want: %v", got, want)
}
}
func TestImageDrawTwice(t *testing.T) {
const w, h = 1, 1
dst := NewImage(w, h)
src0 := NewImage(w, h)
src0.ReplacePixels([]byte{0xff, 0xff, 0xff, 0xff})
src1 := NewImage(w, h)
src1.ReplacePixels([]byte{0x80, 0x80, 0x80, 0xff})
vs := quadVertices(w, h, 0, 0, 1)
is := graphics.QuadIndices()
dr := driver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
dst.DrawTriangles([graphics.ShaderImageNum]*Image{src0}, vs, is, affine.ColorMIdentity{}, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressUnsafe, dr, driver.Region{}, [graphics.ShaderImageNum - 1][2]float32{}, nil, nil, false)
// Vertices must be recreated (#1755)
vs = quadVertices(w, h, 0, 0, 1)
dst.DrawTriangles([graphics.ShaderImageNum]*Image{src1}, vs, is, affine.ColorMIdentity{}, driver.CompositeModeCopy, driver.FilterNearest, driver.AddressUnsafe, dr, driver.Region{}, [graphics.ShaderImageNum - 1][2]float32{}, nil, nil, false)
pix, err := dst.Pixels(0, 0, w, h)
if err != nil {
t.Error(err)
}
if got, want := (color.RGBA{pix[0], pix[1], pix[2], pix[3]}), (color.RGBA{0x80, 0x80, 0x80, 0xff}); got != want {
t.Errorf("got: %v, want: %v", got, want)
}
}