mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-13 22:47:26 +01:00
75 lines
2.0 KiB
Go
75 lines
2.0 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 main
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import (
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_ "embed"
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"log"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/ebitenutil"
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)
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//go:embed defaultshader.go
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var defaultShaderSourceBytes []byte
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type Game struct {
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defaultShader *ebiten.Shader
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counter int
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}
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func (g *Game) Update() error {
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g.counter++
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if g.defaultShader == nil {
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s, err := ebiten.NewShader(defaultShaderSourceBytes)
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if err != nil {
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return err
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}
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g.defaultShader = s
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}
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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cx, cy := ebiten.CursorPosition()
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w, h := screen.Bounds().Dx(), screen.Bounds().Dy()
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op := &ebiten.DrawRectShaderOptions{}
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op.Uniforms = map[string]interface{}{
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"Time": float32(g.counter) / float32(ebiten.TPS()),
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"Cursor": []float32{float32(cx), float32(cy)},
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}
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screen.DrawRectShader(w, h, g.defaultShader, op)
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msg := `This is a test for shader precompilation.
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Precompilation works only on macOS so far.
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Note that this example still works even without shader precompilation.`
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ebitenutil.DebugPrint(screen, msg)
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
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return outsideWidth, outsideHeight
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}
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func main() {
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if err := registerPrecompiledShaders(); err != nil {
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log.Fatal(err)
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}
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ebiten.SetWindowTitle("Ebitengine Example (Shader Precompilation)")
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if err := ebiten.RunGame(&Game{}); err != nil {
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log.Fatal(err)
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}
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}
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