ebiten/internal/graphicsdriver/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 (
"errors"
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"github.com/hajimehoshi/ebiten/v2/internal/graphics"
"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
)
type Region struct {
X float32
Y float32
Width float32
Height float32
}
const (
InvalidImageID = 0
InvalidShaderID = 0
)
type Graphics interface {
Initialize() error
Begin() error
End(present bool) error
SetTransparent(transparent bool)
SetVertices(vertices []float32, indices []uint16) error
NewImage(width, height int) (Image, error)
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NewScreenFramebufferImage(width, height int) (Image, error)
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SetVsyncEnabled(enabled bool)
SetFullscreen(fullscreen bool)
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NeedsRestoring() bool
NeedsClearingScreen() bool
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IsGL() bool
IsDirectX() 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, offsets [graphics.ShaderImageCount - 1][2]float32, shader ShaderID, indexLen int, indexOffset int, blend Blend, dstRegion, srcRegion Region, uniforms [][]float32, evenOdd bool) error
}
// GraphicsNotReady represents that the graphics driver is not ready for recovering from the context lost.
var GraphicsNotReady = errors.New("graphics not ready")
type Image interface {
ID() ImageID
Dispose()
IsInvalidated() bool
ReadPixels(buf []byte, x, y, width, height int) error
WritePixels(args []*WritePixelsArgs) error
}
type ImageID int
type WritePixelsArgs struct {
Pixels []byte
X int
Y int
Width int
Height int
}
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type Shader interface {
ID() ShaderID
Dispose()
}
type ShaderID int