mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 11:48:55 +01:00
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
// Copyright 2024 The Ebitengine 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 main
|
|
|
|
import (
|
|
_ "embed"
|
|
"log"
|
|
|
|
"github.com/hajimehoshi/ebiten/v2"
|
|
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
|
|
)
|
|
|
|
//go:embed defaultshader.go
|
|
var defaultShaderSourceBytes []byte
|
|
|
|
type Game struct {
|
|
defaultShader *ebiten.Shader
|
|
counter int
|
|
}
|
|
|
|
func (g *Game) Update() error {
|
|
g.counter++
|
|
|
|
if g.defaultShader == nil {
|
|
s, err := ebiten.NewShader(defaultShaderSourceBytes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
g.defaultShader = s
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (g *Game) Draw(screen *ebiten.Image) {
|
|
cx, cy := ebiten.CursorPosition()
|
|
w, h := screen.Bounds().Dx(), screen.Bounds().Dy()
|
|
op := &ebiten.DrawRectShaderOptions{}
|
|
op.Uniforms = map[string]interface{}{
|
|
"Time": float32(g.counter) / float32(ebiten.TPS()),
|
|
"Cursor": []float32{float32(cx), float32(cy)},
|
|
}
|
|
screen.DrawRectShader(w, h, g.defaultShader, op)
|
|
|
|
msg := `This is a test for shader precompilation.
|
|
Precompilation works only on macOS so far.
|
|
Note that this example still works even without shader precompilation.`
|
|
ebitenutil.DebugPrint(screen, msg)
|
|
}
|
|
|
|
func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
|
|
return outsideWidth, outsideHeight
|
|
}
|
|
|
|
func main() {
|
|
if err := registerPrecompiledShaders(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
ebiten.SetWindowTitle("Ebitengine Example (Shader Precompilation)")
|
|
if err := ebiten.RunGame(&Game{}); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|