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graphics.go
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graphics.go
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// 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 graphicsdriver
import (
"fmt"
"image"
"github.com/hajimehoshi/ebiten/v2/internal/graphics"
"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
)
type DstRegion struct {
Region image.Rectangle
IndexCount int
}
type FillRule int
const (
FillAll FillRule = iota
NonZero
EvenOdd
)
func (f FillRule) String() string {
switch f {
case FillAll:
return "FillAll"
case NonZero:
return "NonZero"
case EvenOdd:
return "EvenOdd"
default:
return fmt.Sprintf("FillRule(%d)", f)
}
}
const (
InvalidImageID = 0
InvalidShaderID = 0
)
type Graphics interface {
Initialize() error
Begin() error
End(present bool) error
SetTransparent(transparent bool)
SetVertices(vertices []float32, indices []uint32) error
NewImage(width, height int) (Image, error)
NewScreenFramebufferImage(width, height int) (Image, error)
SetVsyncEnabled(enabled bool)
NeedsClearingScreen() bool
MaxImageSize() int
NewShader(program *shaderir.Program) (Shader, error)
// DrawTriangles draws an image onto another image with the given parameters.
DrawTriangles(dst ImageID, srcs [graphics.ShaderImageCount]ImageID, shader ShaderID, dstRegions []DstRegion, indexOffset int, blend Blend, uniforms []uint32, fillRule FillRule) error
}
type Resetter interface {
Reset() error
}
type Image interface {
ID() ImageID
Dispose()
ReadPixels(args []PixelsArgs) error
WritePixels(args []PixelsArgs) error
}
type ImageID int
type PixelsArgs struct {
Pixels []byte
Region image.Rectangle
}
type Shader interface {
ID() ShaderID
Dispose()
}
type ShaderID int