mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 03:38:55 +01:00
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
// Copyright 2020 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 ebiten
|
|
|
|
import (
|
|
"bytes"
|
|
"go/parser"
|
|
"go/token"
|
|
|
|
"github.com/hajimehoshi/ebiten/internal/buffered"
|
|
"github.com/hajimehoshi/ebiten/internal/shader"
|
|
)
|
|
|
|
const shaderSuffix = `
|
|
var __viewportSize vec2`
|
|
|
|
type Shader struct {
|
|
shader *buffered.Shader
|
|
}
|
|
|
|
func NewShader(src []byte) (*Shader, error) {
|
|
var buf bytes.Buffer
|
|
buf.Write(src)
|
|
buf.WriteString(shaderSuffix)
|
|
|
|
fs := token.NewFileSet()
|
|
f, err := parser.ParseFile(fs, "", buf.Bytes(), parser.AllErrors)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
s, err := shader.Compile(fs, f, "Vertex", "Fragment")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &Shader{
|
|
shader: buffered.NewShader(s),
|
|
}, nil
|
|
}
|
|
|
|
func (s *Shader) Dispose() {
|
|
s.shader.MarkDisposed()
|
|
s.shader = nil
|
|
}
|