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https://github.com/hajimehoshi/ebiten.git
synced 2024-09-19 21:02:18 +02:00
graphics: Remove image commands and use functions instead
This commit is contained in:
Hajime Hoshi
parent
b8a062e813
commit
bbc2ad915a
161
image.go
161
image.go
@ -19,13 +19,31 @@ import (
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"fmt"
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"image"
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"image/color"
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"runtime"
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"sync"
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"github.com/hajimehoshi/ebiten/internal/graphics"
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"github.com/hajimehoshi/ebiten/internal/graphics/opengl"
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)
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var imageM sync.Mutex
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var (
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imageCommandQueue = []func() error{}
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)
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func execBufferedImageCommands() error {
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imageM.Lock()
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defer imageM.Unlock()
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for _, f := range imageCommandQueue {
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if err := f(); err != nil {
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return err
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}
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}
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imageCommandQueue = nil
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return nil
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}
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// Image represents an image.
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// The pixel format is alpha-premultiplied.
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// Image implements image.Image.
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@ -68,15 +86,18 @@ func (i *Image) Fill(clr color.Color) (err error) {
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}
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func (i *Image) fill(clr color.Color) (err error) {
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c := &fillCommand{
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dst: i,
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color: clr,
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f := func() error {
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if i.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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i.pixels = nil
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return i.framebuffer.Fill(glContext, clr)
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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imageCommandQueue = append(imageCommandQueue, f)
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return
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}
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return c.Exec()
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return f()
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}
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@ -126,19 +147,19 @@ func (i *Image) DrawImage(image *Image, options *DrawImageOptions) (err error) {
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if i == image {
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return errors.New("ebiten: Image.DrawImage: image should be different from the receiver")
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}
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c := &drawImageCommand{
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dst: i,
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src: image,
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vertices: vertices[:16*n],
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geoM: options.GeoM,
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colorM: options.ColorM,
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compositeMode: options.CompositeMode,
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f := func() error {
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if i.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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i.pixels = nil
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m := opengl.CompositeMode(options.CompositeMode)
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return i.framebuffer.DrawTexture(glContext, image.texture, vertices[:16*n], &options.GeoM, &options.ColorM, m)
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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imageCommandQueue = append(imageCommandQueue, f)
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return nil
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}
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return c.Exec()
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return f()
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}
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// Bounds returns the bounds of the image.
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@ -194,14 +215,32 @@ func (i *Image) At(x, y int) color.Color {
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func (i *Image) Dispose() error {
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imageM.Lock()
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defer imageM.Unlock()
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c := &disposeCommand{
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image: i,
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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f := func() error {
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if i.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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if i.framebuffer != nil {
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if err := i.framebuffer.Dispose(glContext); err != nil {
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return err
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}
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i.framebuffer = nil
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}
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if i.texture != nil {
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if err := i.texture.Dispose(glContext); err != nil {
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return err
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}
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i.texture = nil
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}
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i.disposed = true
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i.pixels = nil
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runtime.SetFinalizer(i, nil)
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return nil
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}
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return c.Exec()
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, f)
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return nil
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}
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return f()
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}
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func (i *Image) isDisposed() bool {
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@ -218,20 +257,22 @@ func (i *Image) isDisposed() bool {
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func (i *Image) ReplacePixels(p []uint8) error {
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imageM.Lock()
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defer imageM.Unlock()
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// Don't set i.pixels here because i.pixels is used not every time.
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i.pixels = nil
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if l := 4 * i.width * i.height; len(p) != l {
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return fmt.Errorf("ebiten: p's length must be %d", l)
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}
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c := &replacePixelsCommand{
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dst: i,
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pixels: p,
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f := func() error {
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// Don't set i.pixels here because i.pixels is used not every time.
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i.pixels = nil
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if i.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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return i.framebuffer.ReplacePixels(glContext, i.texture, p)
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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imageCommandQueue = append(imageCommandQueue, f)
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return nil
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}
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return c.Exec()
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return f()
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}
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// A DrawImageOptions represents options to render an image on an image.
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@ -256,23 +297,36 @@ type DrawImageOptions struct {
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func NewImage(width, height int, filter Filter) (*Image, error) {
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imageM.Lock()
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defer imageM.Unlock()
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c := &newImageCommand{
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image := &Image{
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width: width,
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height: height,
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filter: filter,
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result: &Image{
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width: width,
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height: height,
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},
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}
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f := func() error {
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texture, err := graphics.NewTexture(glContext, width, height, glFilter(glContext, filter))
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if err != nil {
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return err
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}
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framebuffer, err := graphics.NewFramebufferFromTexture(glContext, texture)
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if err != nil {
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// TODO: texture should be removed here?
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return err
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}
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image.framebuffer = framebuffer
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image.texture = texture
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runtime.SetFinalizer(image, (*Image).Dispose)
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if err := image.framebuffer.Fill(glContext, color.Transparent); err != nil {
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return err
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}
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return nil
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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return c.result, nil
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imageCommandQueue = append(imageCommandQueue, f)
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return image, nil
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}
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if err := c.Exec(); err != nil {
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if err := f(); err != nil {
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return nil, err
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}
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return c.result, nil
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return image, nil
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}
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// NewImageFromImage creates a new image with the given image (img).
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@ -288,20 +342,31 @@ func NewImageFromImage(img image.Image, filter Filter) (*Image, error) {
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defer imageM.Unlock()
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size := img.Bounds().Size()
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w, h := size.X, size.Y
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c := &newImageFromImageCommand{
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image: img,
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filter: filter,
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result: &Image{
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width: w,
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height: h,
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},
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image := &Image{
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width: w,
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height: h,
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}
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f := func() error {
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texture, err := graphics.NewTextureFromImage(glContext, img, glFilter(glContext, filter))
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if err != nil {
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return err
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}
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framebuffer, err := graphics.NewFramebufferFromTexture(glContext, texture)
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if err != nil {
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// TODO: texture should be removed here?
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return err
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}
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image.framebuffer = framebuffer
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image.texture = texture
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runtime.SetFinalizer(image, (*Image).Dispose)
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return nil
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}
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if imageCommandQueue != nil {
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imageCommandQueue = append(imageCommandQueue, c)
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return c.result, nil
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imageCommandQueue = append(imageCommandQueue, f)
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return image, nil
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}
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if err := c.Exec(); err != nil {
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if err := f(); err != nil {
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return nil, err
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}
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return c.result, nil
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return image, nil
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}
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164
imagecommand.go
164
imagecommand.go
@ -1,164 +0,0 @@
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// 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 ebiten
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import (
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"errors"
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"image"
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"image/color"
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"runtime"
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"github.com/hajimehoshi/ebiten/internal/graphics"
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"github.com/hajimehoshi/ebiten/internal/graphics/opengl"
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)
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// Commands are used only before the GL Context is created.
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type imageCommand interface {
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Exec() error
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}
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var (
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imageCommandQueue = []imageCommand{}
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)
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func execBufferedImageCommands() error {
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imageM.Lock()
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defer imageM.Unlock()
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for _, c := range imageCommandQueue {
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if err := c.Exec(); err != nil {
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return err
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}
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}
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imageCommandQueue = nil
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return nil
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}
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type fillCommand struct {
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dst *Image
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color color.Color
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}
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func (c *fillCommand) Exec() error {
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if c.dst.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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c.dst.pixels = nil
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return c.dst.framebuffer.Fill(glContext, c.color)
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}
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type drawImageCommand struct {
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dst *Image
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src *Image
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vertices []int16
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geoM GeoM
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colorM ColorM
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compositeMode CompositeMode
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}
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func (c *drawImageCommand) Exec() error {
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if c.dst.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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c.dst.pixels = nil
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m := opengl.CompositeMode(c.compositeMode)
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return c.dst.framebuffer.DrawTexture(glContext, c.src.texture, c.vertices, &c.geoM, &c.colorM, m)
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}
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type replacePixelsCommand struct {
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dst *Image
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pixels []uint8
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}
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func (c *replacePixelsCommand) Exec() error {
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if c.dst.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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return c.dst.framebuffer.ReplacePixels(glContext, c.dst.texture, c.pixels)
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}
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type disposeCommand struct {
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image *Image
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}
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func (c *disposeCommand) Exec() error {
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if c.image.isDisposed() {
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return errors.New("ebiten: image is already disposed")
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}
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if c.image.framebuffer != nil {
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if err := c.image.framebuffer.Dispose(glContext); err != nil {
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return err
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}
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c.image.framebuffer = nil
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}
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if c.image.texture != nil {
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if err := c.image.texture.Dispose(glContext); err != nil {
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return err
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}
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c.image.texture = nil
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}
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c.image.disposed = true
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c.image.pixels = nil
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runtime.SetFinalizer(c.image, nil)
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return nil
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}
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type newImageCommand struct {
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result *Image
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width int
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height int
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filter Filter
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}
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func (c *newImageCommand) Exec() error {
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texture, err := graphics.NewTexture(glContext, c.width, c.height, glFilter(glContext, c.filter))
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if err != nil {
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return err
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}
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framebuffer, err := graphics.NewFramebufferFromTexture(glContext, texture)
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if err != nil {
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// TODO: texture should be removed here?
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return err
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}
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c.result.framebuffer = framebuffer
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c.result.texture = texture
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runtime.SetFinalizer(c.result, (*Image).Dispose)
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if err := c.result.framebuffer.Fill(glContext, color.Transparent); err != nil {
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return err
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}
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return nil
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}
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type newImageFromImageCommand struct {
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image image.Image
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filter Filter
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result *Image
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}
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func (c *newImageFromImageCommand) Exec() error {
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texture, err := graphics.NewTextureFromImage(glContext, c.image, glFilter(glContext, c.filter))
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if err != nil {
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return err
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}
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framebuffer, err := graphics.NewFramebufferFromTexture(glContext, texture)
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if err != nil {
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// TODO: texture should be removed here?
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return err
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}
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c.result.framebuffer = framebuffer
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c.result.texture = texture
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runtime.SetFinalizer(c.result, (*Image).Dispose)
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return nil
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}
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