mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 05:12:18 +02:00
31104c4e79
A shader compilation error breaks the state of the graphics command queue, and this cannot be reused. Thus, a process test is appropriated.
596 lines
12 KiB
Go
596 lines
12 KiB
Go
// Copyright 2020 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 ebiten_test
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import (
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"image"
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"image/color"
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"testing"
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"github.com/hajimehoshi/ebiten/v2"
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)
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func TestShaderFill(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(1, 0, 0, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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dst.DrawRectShader(w/2, h/2, s, nil)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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var want color.RGBA
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if i < w/2 && j < h/2 {
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want = color.RGBA{0xff, 0, 0, 0xff}
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}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderFillWithDrawImage(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(1, 0, 0, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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src := ebiten.NewImage(w/2, h/2)
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op := &ebiten.DrawRectShaderOptions{}
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op.Images[0] = src
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dst.DrawRectShader(w/2, h/2, s, op)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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var want color.RGBA
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if i < w/2 && j < h/2 {
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want = color.RGBA{0xff, 0, 0, 0xff}
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}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderFillWithDrawTriangles(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(1, 0, 0, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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src := ebiten.NewImage(w/2, h/2)
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op := &ebiten.DrawTrianglesShaderOptions{}
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op.Images[0] = src
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vs := []ebiten.Vertex{
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{
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DstX: 0,
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DstY: 0,
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SrcX: 0,
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SrcY: 0,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: w,
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DstY: 0,
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SrcX: w / 2,
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SrcY: 0,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: 0,
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DstY: h,
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SrcX: 0,
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SrcY: h / 2,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: w,
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DstY: h,
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SrcX: w / 2,
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SrcY: h / 2,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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}
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is := []uint16{0, 1, 2, 1, 2, 3}
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dst.DrawTrianglesShader(vs, is, s, op)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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want := color.RGBA{0xff, 0, 0, 0xff}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderFunction(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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func clr(red float) (float, float, float, float) {
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return red, 0, 0, 1
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}
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(clr(1))
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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dst.DrawRectShader(w, h, s, nil)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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want := color.RGBA{0xff, 0, 0, 0xff}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderUninitializedUniformVariables(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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var U vec4
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return U
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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dst.DrawRectShader(w, h, s, nil)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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var want color.RGBA
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderMatrix(t *testing.T) {
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const w, h = 16, 16
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dst := ebiten.NewImage(w, h)
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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var a, b mat4
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a[0] = vec4(0.125, 0.0625, 0.0625, 0.0625)
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a[1] = vec4(0.25, 0.25, 0.0625, 0.1875)
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a[2] = vec4(0.1875, 0.125, 0.25, 0.25)
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a[3] = vec4(0.0625, 0.1875, 0.125, 0.25)
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b[0] = vec4(0.0625, 0.125, 0.0625, 0.125)
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b[1] = vec4(0.125, 0.1875, 0.25, 0.0625)
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b[2] = vec4(0.125, 0.125, 0.1875, 0.1875)
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b[3] = vec4(0.25, 0.0625, 0.125, 0.0625)
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return vec4((a * b * vec4(1, 1, 1, 1)).xyz, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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src := ebiten.NewImage(w, h)
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op := &ebiten.DrawRectShaderOptions{}
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op.Images[0] = src
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dst.DrawRectShader(w, h, s, op)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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want := color.RGBA{87, 82, 71, 255}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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func TestShaderSubImage(t *testing.T) {
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const w, h = 16, 16
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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r := imageSrc0At(texCoord).r
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g := imageSrc1At(texCoord).g
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return vec4(r, g, 0, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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src0 := ebiten.NewImage(w, h)
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pix0 := make([]byte, 4*w*h)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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if 2 <= i && i < 10 && 3 <= j && j < 11 {
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pix0[4*(j*w+i)] = 0xff
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pix0[4*(j*w+i)+1] = 0
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pix0[4*(j*w+i)+2] = 0
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pix0[4*(j*w+i)+3] = 0xff
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}
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}
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}
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src0.ReplacePixels(pix0)
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src0 = src0.SubImage(image.Rect(2, 3, 10, 11)).(*ebiten.Image)
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src1 := ebiten.NewImage(w, h)
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pix1 := make([]byte, 4*w*h)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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if 6 <= i && i < 14 && 8 <= j && j < 16 {
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pix1[4*(j*w+i)] = 0
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pix1[4*(j*w+i)+1] = 0xff
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pix1[4*(j*w+i)+2] = 0
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pix1[4*(j*w+i)+3] = 0xff
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}
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}
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}
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src1.ReplacePixels(pix1)
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src1 = src1.SubImage(image.Rect(6, 8, 14, 16)).(*ebiten.Image)
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testPixels := func(testname string, dst *ebiten.Image) {
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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got := dst.At(i, j).(color.RGBA)
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var want color.RGBA
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if i < w/2 && j < h/2 {
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want = color.RGBA{0xff, 0xff, 0, 0xff}
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}
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if got != want {
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t.Errorf("%s dst.At(%d, %d): got: %v, want: %v", testname, i, j, got, want)
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}
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}
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}
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}
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t.Run("DrawRectShader", func(t *testing.T) {
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dst := ebiten.NewImage(w, h)
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op := &ebiten.DrawRectShaderOptions{}
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op.Images[0] = src0
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op.Images[1] = src1
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dst.DrawRectShader(w/2, h/2, s, op)
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testPixels("DrawRectShader", dst)
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})
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t.Run("DrawTrianglesShader", func(t *testing.T) {
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dst := ebiten.NewImage(w, h)
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vs := []ebiten.Vertex{
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{
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DstX: 0,
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DstY: 0,
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SrcX: 2,
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SrcY: 3,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: w / 2,
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DstY: 0,
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SrcX: 10,
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SrcY: 3,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: 0,
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DstY: h / 2,
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SrcX: 2,
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SrcY: 11,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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{
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DstX: w / 2,
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DstY: h / 2,
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SrcX: 10,
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SrcY: 11,
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ColorR: 1,
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ColorG: 1,
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ColorB: 1,
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ColorA: 1,
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},
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}
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is := []uint16{0, 1, 2, 1, 2, 3}
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op := &ebiten.DrawTrianglesShaderOptions{}
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op.Images[0] = src0
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op.Images[1] = src1
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dst.DrawTrianglesShader(vs, is, s, op)
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testPixels("DrawTrianglesShader", dst)
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})
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}
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// Issue #1404
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func TestShaderDerivatives(t *testing.T) {
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const w, h = 16, 16
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s, err := ebiten.NewShader([]byte(`package main
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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p := imageSrc0At(texCoord)
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return vec4(abs(dfdx(p.r)), abs(dfdy(p.g)), 0, 1)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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dst := ebiten.NewImage(w, h)
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src := ebiten.NewImage(w, h)
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pix := make([]byte, 4*w*h)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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if i < w/2 {
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pix[4*(j*w+i)] = 0xff
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}
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if j < h/2 {
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pix[4*(j*w+i)+1] = 0xff
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}
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pix[4*(j*w+i)+3] = 0xff
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}
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}
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src.ReplacePixels(pix)
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op := &ebiten.DrawRectShaderOptions{}
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op.Images[0] = src
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dst.DrawRectShader(w, h, s, op)
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// The results of the edges might be unreliable. Skip the edges.
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for j := 1; j < h-1; j++ {
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for i := 1; i < w-1; i++ {
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got := dst.At(i, j).(color.RGBA)
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want := color.RGBA{0, 0, 0, 0xff}
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if i == w/2-1 || i == w/2 {
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want.R = 0xff
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}
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if j == h/2-1 || j == h/2 {
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want.G = 0xff
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}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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// Issue #1701
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func TestShaderDerivatives2(t *testing.T) {
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const w, h = 16, 16
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s, err := ebiten.NewShader([]byte(`package main
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// This function uses dfdx and then should not be in GLSL's vertex shader (#1701).
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func Foo(p vec4) vec4 {
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return vec4(abs(dfdx(p.r)), abs(dfdy(p.g)), 0, 1)
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}
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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p := imageSrc0At(texCoord)
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return Foo(p)
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}
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`))
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if err != nil {
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t.Fatal(err)
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}
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dst := ebiten.NewImage(w, h)
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src := ebiten.NewImage(w, h)
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pix := make([]byte, 4*w*h)
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for j := 0; j < h; j++ {
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for i := 0; i < w; i++ {
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if i < w/2 {
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pix[4*(j*w+i)] = 0xff
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}
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if j < h/2 {
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pix[4*(j*w+i)+1] = 0xff
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}
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pix[4*(j*w+i)+3] = 0xff
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}
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}
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src.ReplacePixels(pix)
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op := &ebiten.DrawRectShaderOptions{}
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op.Images[0] = src
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dst.DrawRectShader(w, h, s, op)
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// The results of the edges might be unreliable. Skip the edges.
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for j := 1; j < h-1; j++ {
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for i := 1; i < w-1; i++ {
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got := dst.At(i, j).(color.RGBA)
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want := color.RGBA{0, 0, 0, 0xff}
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if i == w/2-1 || i == w/2 {
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want.R = 0xff
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}
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if j == h/2-1 || j == h/2 {
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want.G = 0xff
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}
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if got != want {
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t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
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}
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}
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}
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}
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// Issue #1754
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func TestShaderUniformFirstElement(t *testing.T) {
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shaders := []struct {
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Name string
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Shader string
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Uniforms map[string]interface{}
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}{
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{
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Name: "float array",
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Shader: `package main
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var C [2]float
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(C[0], 1, 1, 1)
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}`,
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Uniforms: map[string]interface{}{
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"C": []float32{1, 1},
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},
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},
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{
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Name: "float one-element array",
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Shader: `package main
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var C [1]float
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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return vec4(C[0], 1, 1, 1)
|
|
}`,
|
|
Uniforms: map[string]interface{}{
|
|
"C": []float32{1},
|
|
},
|
|
},
|
|
{
|
|
Name: "matrix array",
|
|
Shader: `package main
|
|
|
|
var C [2]mat2
|
|
|
|
func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
|
|
return vec4(C[0][0][0], 1, 1, 1)
|
|
}`,
|
|
Uniforms: map[string]interface{}{
|
|
"C": []float32{1, 0, 0, 0, 0, 0, 0, 0},
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, shader := range shaders {
|
|
shader := shader
|
|
t.Run(shader.Name, func(t *testing.T) {
|
|
const w, h = 1, 1
|
|
|
|
dst := ebiten.NewImage(w, h)
|
|
s, err := ebiten.NewShader([]byte(shader.Shader))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
op := &ebiten.DrawRectShaderOptions{}
|
|
op.Uniforms = shader.Uniforms
|
|
dst.DrawRectShader(w, h, s, op)
|
|
if got, want := dst.At(0, 0), (color.RGBA{0xff, 0xff, 0xff, 0xff}); got != want {
|
|
t.Errorf("got: %v, want: %v", got, want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// Issue #2006
|
|
func TestShaderFuncMod(t *testing.T) {
|
|
const w, h = 16, 16
|
|
|
|
dst := ebiten.NewImage(w, h)
|
|
s, err := ebiten.NewShader([]byte(`package main
|
|
|
|
func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
|
|
r := mod(-0.25, 1.0)
|
|
return vec4(r, 0, 0, 1)
|
|
}
|
|
`))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
dst.DrawRectShader(w/2, h/2, s, nil)
|
|
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := dst.At(i, j).(color.RGBA)
|
|
var want color.RGBA
|
|
if i < w/2 && j < h/2 {
|
|
want = color.RGBA{0xc0, 0, 0, 0xff}
|
|
}
|
|
if !sameColors(got, want, 2) {
|
|
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|