mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
// Copyright 2014 Hajime Hoshi
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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 graphics
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import (
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"image"
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"image/draw"
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"github.com/hajimehoshi/ebiten/internal/graphics/opengl"
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)
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func adjustImageForTexture(img *image.RGBA) *image.RGBA {
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width, height := img.Bounds().Size().X, img.Bounds().Size().Y
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adjustedImageBounds := image.Rectangle{
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image.ZP,
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image.Point{
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int(NextPowerOf2Int32(int32(width))),
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int(NextPowerOf2Int32(int32(height))),
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},
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}
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if img.Bounds() == adjustedImageBounds {
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return img
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}
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adjustedImage := image.NewRGBA(adjustedImageBounds)
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dstBounds := image.Rectangle{
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image.ZP,
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img.Bounds().Size(),
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}
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draw.Draw(adjustedImage, dstBounds, img, img.Bounds().Min, draw.Src)
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return adjustedImage
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}
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type Image struct {
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texture *Texture
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framebuffer *Framebuffer
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}
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type Texture struct {
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native opengl.Texture
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width int
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height int
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}
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func NewImage(width, height int, filter opengl.Filter) (*Image, error) {
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i := &Image{
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texture: &Texture{},
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framebuffer: &Framebuffer{},
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}
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c := &newImageCommand{
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texture: i.texture,
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framebuffer: i.framebuffer,
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width: width,
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height: height,
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filter: filter,
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}
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theCommandQueue.Enqueue(c)
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return i, nil
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}
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func NewImageFromImage(img *image.RGBA, filter opengl.Filter) (*Image, error) {
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i := &Image{
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texture: &Texture{},
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framebuffer: &Framebuffer{},
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}
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c := &newImageFromImageCommand{
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texture: i.texture,
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framebuffer: i.framebuffer,
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img: img,
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filter: filter,
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}
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theCommandQueue.Enqueue(c)
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return i, nil
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}
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