ebiten/internal/graphicscommand/image_test.go

177 lines
6.1 KiB
Go

// Copyright 2018 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 graphicscommand_test
import (
"image/color"
"testing"
"github.com/hajimehoshi/ebiten/v2/internal/affine"
"github.com/hajimehoshi/ebiten/v2/internal/graphics"
"github.com/hajimehoshi/ebiten/v2/internal/graphicscommand"
"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
etesting "github.com/hajimehoshi/ebiten/v2/internal/testing"
"github.com/hajimehoshi/ebiten/v2/internal/ui"
)
func TestMain(m *testing.M) {
etesting.MainWithRunLoop(m)
}
func quadVertices(srcImage *graphicscommand.Image, w, h float32) []float32 {
sw, sh := srcImage.InternalSize()
swf, shf := float32(sw), float32(sh)
return []float32{
0, 0, 0, 0, 1, 1, 1, 1,
w, 0, w / swf, 0, 1, 1, 1, 1,
0, w, 0, h / shf, 1, 1, 1, 1,
w, h, w / swf, h / shf, 1, 1, 1, 1,
}
}
func TestClear(t *testing.T) {
const w, h = 1024, 1024
src := graphicscommand.NewImage(w/2, h/2, false)
dst := graphicscommand.NewImage(w, h, false)
vs := quadVertices(src, w/2, h/2)
is := graphics.QuadIndices()
dr := graphicsdriver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{src}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeClear, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, nil, nil, false)
pix := make([]byte, 4*w*h)
if err := dst.ReadPixels(ui.GraphicsDriverForTesting(), pix); err != nil {
t.Fatal(err)
}
for j := 0; j < h/2; j++ {
for i := 0; i < w/2; i++ {
idx := 4 * (i + w*j)
got := color.RGBA{pix[idx], pix[idx+1], pix[idx+2], pix[idx+3]}
want := color.RGBA{}
if got != want {
t.Errorf("dst.At(%d, %d) after DrawTriangles: got %v, want: %v", i, j, got, want)
}
}
}
}
func TestReplacePixelsPartAfterDrawTriangles(t *testing.T) {
const w, h = 32, 32
clr := graphicscommand.NewImage(w, h, false)
src := graphicscommand.NewImage(w/2, h/2, false)
dst := graphicscommand.NewImage(w, h, false)
vs := quadVertices(src, w/2, h/2)
is := graphics.QuadIndices()
dr := graphicsdriver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{clr}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeClear, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, nil, nil, false)
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{src}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeSourceOver, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, nil, nil, false)
dst.ReplacePixels(make([]byte, 4), nil, 0, 0, 1, 1)
// TODO: Check the result.
}
func TestReplacePixelsWithMask(t *testing.T) {
const w, h = 4, 3
src := graphicscommand.NewImage(w, h, false)
dst := graphicscommand.NewImage(w, h, false)
vs := quadVertices(src, w, h)
is := graphics.QuadIndices()
dr := graphicsdriver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{src}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeClear, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, nil, nil, false)
pix0 := make([]byte, 4*w*h)
for i := range pix0 {
pix0[i] = 0x40
}
dst.ReplacePixels(pix0, nil, 0, 0, w, h)
pix1 := make([]byte, 4*w*h)
for i := range pix1 {
pix1[i] = 0x80
}
mask1 := []byte{0b11110110, 0b00000110}
dst.ReplacePixels(pix1, mask1, 0, 0, w, h)
readPix := make([]byte, 4*w*h)
if err := dst.ReadPixels(ui.GraphicsDriverForTesting(), readPix); err != nil {
t.Fatal(err)
}
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
idx := 4 * (i + w*j)
got := color.RGBA{readPix[idx], readPix[idx+1], readPix[idx+2], readPix[idx+3]}
var want color.RGBA
if (i != 0 && i != w-1) || (j != 0 && j != h-1) {
want = color.RGBA{0x80, 0x80, 0x80, 0x80}
} else {
want = color.RGBA{0x40, 0x40, 0x40, 0x40}
}
if got != want {
t.Errorf("dst.At(%d, %d) after ReplacePixels: got %v, want: %v", i, j, got, want)
}
}
}
}
func TestShader(t *testing.T) {
const w, h = 16, 16
clr := graphicscommand.NewImage(w, h, false)
dst := graphicscommand.NewImage(w, h, false)
vs := quadVertices(clr, w, h)
is := graphics.QuadIndices()
dr := graphicsdriver.Region{
X: 0,
Y: 0,
Width: w,
Height: h,
}
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{clr}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeClear, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, nil, nil, false)
g := ui.GraphicsDriverForTesting()
s := graphicscommand.NewShader(etesting.ShaderProgramFill(0xff, 0, 0, 0xff))
dst.DrawTriangles([graphics.ShaderImageNum]*graphicscommand.Image{}, [graphics.ShaderImageNum - 1][2]float32{}, vs, is, affine.ColorMIdentity{}, graphicsdriver.CompositeModeSourceOver, graphicsdriver.FilterNearest, graphicsdriver.AddressUnsafe, dr, graphicsdriver.Region{}, s, nil, false)
pix := make([]byte, 4*w*h)
if err := dst.ReadPixels(g, pix); err != nil {
t.Fatal(err)
}
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
idx := 4 * (i + w*j)
got := color.RGBA{pix[idx], pix[idx+1], pix[idx+2], pix[idx+3]}
want := color.RGBA{0xff, 0, 0, 0xff}
if got != want {
t.Errorf("dst.At(%d, %d) after DrawTriangles: got %v, want: %v", i, j, got, want)
}
}
}
}