mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-25 03:08:54 +01:00
135 lines
2.9 KiB
Go
135 lines
2.9 KiB
Go
// Copyright 2016 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/color"
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"github.com/hajimehoshi/ebiten/internal/affine"
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"github.com/hajimehoshi/ebiten/internal/opengl"
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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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width int
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height int
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}
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const ImageMaxSize = viewportSize
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func NewImage(width, height int, filter opengl.Filter) (*Image, error) {
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i := &Image{
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width: width,
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height: height,
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}
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c := &newImageCommand{
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result: i,
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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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s := img.Bounds().Size()
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i := &Image{
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width: s.X,
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height: s.Y,
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}
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c := &newImageFromImageCommand{
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result: i,
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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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func NewScreenFramebufferImage(width, height int) (*Image, error) {
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i := &Image{
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width: width,
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height: height,
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}
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c := &newScreenFramebufferImageCommand{
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result: i,
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width: width,
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height: height,
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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 (i *Image) Dispose() error {
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c := &disposeCommand{
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target: i,
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}
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theCommandQueue.Enqueue(c)
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return nil
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}
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func (i *Image) Size() (int, int) {
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return i.width, i.height
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}
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func (i *Image) Fill(clr color.RGBA) error {
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// TODO: Need to clone clr value
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c := &fillCommand{
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dst: i,
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color: clr,
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}
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theCommandQueue.Enqueue(c)
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return nil
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}
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func (i *Image) DrawImage(src *Image, vertices []float32, clr affine.ColorM, mode opengl.CompositeMode) error {
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c := &drawImageCommand{
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dst: i,
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src: src,
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vertices: vertices,
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color: clr,
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mode: mode,
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}
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theCommandQueue.Enqueue(c)
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return nil
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}
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func (i *Image) Pixels(context *opengl.Context) ([]uint8, error) {
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// Flush the enqueued commands so that pixels are certainly read.
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if err := theCommandQueue.Flush(context); err != nil {
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return nil, err
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}
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f := i.framebuffer
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return context.FramebufferPixels(f.native, i.width, i.height)
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}
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func (i *Image) ReplacePixels(p []uint8) error {
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pixels := make([]uint8, len(p))
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copy(pixels, p)
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c := &replacePixelsCommand{
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dst: i,
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pixels: pixels,
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}
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theCommandQueue.Enqueue(c)
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return nil
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}
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func (i *Image) IsInvalidated(context *opengl.Context) bool {
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return !context.IsTexture(i.texture.native)
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}
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