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Add internal/pixels

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This commit is contained in:
Hajime Hoshi 2016-07-25 02:28:59 +09:00
parent 000958df56
commit f6be72fba2
2 changed files with 54 additions and 49 deletions
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54
imageimpl.go
View File

@ -25,6 +25,7 @@ import (
"github.com/hajimehoshi/ebiten/internal/graphics"
"github.com/hajimehoshi/ebiten/internal/graphics/opengl"
"github.com/hajimehoshi/ebiten/internal/pixels"
)
type imageImpl struct {
@ -33,7 +34,7 @@ type imageImpl struct {
width int
height int
filter Filter
pixels *pixels
pixels *pixels.Pixels
volatile bool
screen bool
m sync.Mutex
@ -50,11 +51,9 @@ func newImageImpl(width, height int, filter Filter, volatile bool) (*imageImpl,
height: height,
filter: filter,
volatile: volatile,
pixels: &pixels{
image: img,
},
pixels: pixels.NewPixels(img),
}
i.pixels.resetWithPixels(make([]uint8, width*height*4))
i.pixels.ResetWithPixels(make([]uint8, width*height*4))
runtime.SetFinalizer(i, (*imageImpl).Dispose)
return i, nil
}
@ -85,11 +84,9 @@ func newImageImplFromImage(source image.Image, filter Filter) (*imageImpl, error
width: w,
height: h,
filter: filter,
pixels: &pixels{
image: img,
},
pixels: pixels.NewPixels(img),
}
i.pixels.resetWithPixels(p)
i.pixels.ResetWithPixels(p)
runtime.SetFinalizer(i, (*imageImpl).Dispose)
return i, nil
}
@ -105,11 +102,9 @@ func newScreenImageImpl(width, height int) (*imageImpl, error) {
height: height,
volatile: true,
screen: true,
pixels: &pixels{
image: img,
},
pixels: pixels.NewPixels(img),
}
i.pixels.resetWithPixels(make([]uint8, width*height*4))
i.pixels.ResetWithPixels(make([]uint8, width*height*4))
runtime.SetFinalizer(i, (*imageImpl).Dispose)
return i, nil
}
@ -120,10 +115,10 @@ func (i *imageImpl) Fill(clr color.Color) error {
if i.disposed {
return errors.New("ebiten: image is already disposed")
}
if clr == color.Transparent && i.pixels.isCleared() {
if clr == color.Transparent && i.pixels.IsCleared() {
return nil
}
i.pixels.fill(clr)
i.pixels.Fill(clr)
return i.image.Fill(clr)
}
@ -136,10 +131,10 @@ func (i *imageImpl) clearIfVolatile() error {
if !i.volatile {
return nil
}
if i.pixels.isCleared() {
if i.pixels.IsCleared() {
return nil
}
i.pixels.clear()
i.pixels.Clear()
return i.image.Fill(color.Transparent)
}
@ -176,17 +171,10 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
}
geom := options.GeoM
colorm := options.ColorM
c := &drawImageHistoryItem{
image: image.impl.image,
vertices: vertices,
geom: &geom,
colorm: &colorm,
mode: opengl.CompositeMode(options.CompositeMode),
if image.impl.pixels.IsInconsistent() {
i.pixels.MakeInconsistent()
}
if image.impl.pixels.inconsistent {
i.pixels.makeInconsistent()
}
i.pixels.appendDrawImageHistory(c)
i.pixels.AppendDrawImageHistory(image.impl.image, vertices, &geom, &colorm, opengl.CompositeMode(options.CompositeMode))
mode := opengl.CompositeMode(options.CompositeMode)
if err := i.image.DrawImage(image.impl.image, vertices, &geom, &colorm, mode); err != nil {
return err
@ -204,7 +192,7 @@ func (i *imageImpl) At(x, y int, context *opengl.Context) color.Color {
return color.Transparent
}
idx := 4*x + 4*y*i.width
clr, err := i.pixels.at(idx, context)
clr, err := i.pixels.At(idx, context)
if err != nil {
panic(err)
}
@ -217,7 +205,7 @@ func (i *imageImpl) flushPixelsIfInconsistent(context *opengl.Context) error {
if i.disposed {
return nil
}
if err := i.pixels.flushIfInconsistent(context); err != nil {
if err := i.pixels.FlushIfInconsistent(context); err != nil {
return err
}
return nil
@ -235,7 +223,7 @@ func (i *imageImpl) flushPixelsIfNeeded(target *imageImpl, context *opengl.Conte
if target.isDisposed() {
return errors.New("ebiten: target is already disposed")
}
if err := i.pixels.flushIfNeeded(target.image, context); err != nil {
if err := i.pixels.FlushIfNeeded(target.image, context); err != nil {
return err
}
return nil
@ -244,7 +232,7 @@ func (i *imageImpl) flushPixelsIfNeeded(target *imageImpl, context *opengl.Conte
func (i *imageImpl) hasHistory() bool {
i.m.Lock()
defer i.m.Unlock()
return i.pixels.hasHistory()
return i.pixels.HasHistory()
}
func (i *imageImpl) restore(context *opengl.Context) error {
@ -272,7 +260,7 @@ func (i *imageImpl) restore(context *opengl.Context) error {
return nil
}
var err error
i.image, err = i.pixels.restore(context, i.width, i.height, i.filter)
i.image, err = i.pixels.Restore(context, i.width, i.height, glFilter(i.filter))
if err != nil {
return err
}
@ -303,7 +291,7 @@ func (i *imageImpl) ReplacePixels(p []uint8) error {
}
i.m.Lock()
defer i.m.Unlock()
i.pixels.resetWithPixels(p)
i.pixels.ResetWithPixels(p)
if i.disposed {
return errors.New("ebiten: image is already disposed")
}

49
pixels.go → internal/pixels/pixels.go
View File

@ -12,7 +12,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package ebiten
package pixels
import (
"image"
@ -32,7 +32,7 @@ type drawImageHistoryItem struct {
// basePixels and baseColor are exclusive.
type pixels struct {
type Pixels struct {
image *graphics.Image
inconsistent bool
basePixels []uint8
@ -40,7 +40,13 @@ type pixels struct {
drawImageHistory []*drawImageHistoryItem
}
func (p *pixels) resetWithPixels(pixels []uint8) {
func NewPixels(image *graphics.Image) *Pixels {
return &Pixels{
image: image,
}
}
func (p *Pixels) ResetWithPixels(pixels []uint8) {
if p.basePixels == nil {
p.basePixels = make([]uint8, len(pixels))
}
@ -50,42 +56,53 @@ func (p *pixels) resetWithPixels(pixels []uint8) {
p.drawImageHistory = nil
}
func (p *pixels) clear() {
func (p *Pixels) Clear() {
p.inconsistent = false
p.basePixels = nil
p.baseColor = nil
p.drawImageHistory = nil
}
func (p *pixels) isCleared() bool {
func (p *Pixels) IsCleared() bool {
if p.inconsistent {
return false
}
return p.basePixels == nil && p.baseColor == nil && p.drawImageHistory == nil
}
func (p *pixels) fill(clr color.Color) {
func (p *Pixels) Fill(clr color.Color) {
p.inconsistent = false
p.basePixels = nil
p.baseColor = clr
p.drawImageHistory = nil
}
func (p *pixels) makeInconsistent() {
func (p *Pixels) IsInconsistent() bool {
return p.inconsistent
}
func (p *Pixels) MakeInconsistent() {
p.inconsistent = true
p.basePixels = nil
p.baseColor = nil
p.drawImageHistory = nil
}
func (p *pixels) appendDrawImageHistory(item *drawImageHistoryItem) {
func (p *Pixels) AppendDrawImageHistory(image *graphics.Image, vertices []int16, geom graphics.Matrix, colorm graphics.Matrix, mode opengl.CompositeMode) {
if p.inconsistent {
return
}
item := &drawImageHistoryItem{
image: image,
vertices: vertices,
geom: geom,
colorm: colorm,
mode: mode,
}
p.drawImageHistory = append(p.drawImageHistory, item)
}
func (p *pixels) at(idx int, context *opengl.Context) (color.Color, error) {
func (p *Pixels) At(idx int, context *opengl.Context) (color.Color, error) {
if p.inconsistent || p.basePixels == nil || p.drawImageHistory != nil {
p.inconsistent = false
var err error
@ -100,7 +117,7 @@ func (p *pixels) at(idx int, context *opengl.Context) (color.Color, error) {
return color.RGBA{r, g, b, a}, nil
}
func (p *pixels) hasHistoryWith(target *graphics.Image) bool {
func (p *Pixels) hasHistoryWith(target *graphics.Image) bool {
for _, c := range p.drawImageHistory {
if c.image == target {
return true
@ -109,7 +126,7 @@ func (p *pixels) hasHistoryWith(target *graphics.Image) bool {
return false
}
func (p *pixels) flushIfInconsistent(context *opengl.Context) error {
func (p *Pixels) FlushIfInconsistent(context *opengl.Context) error {
if !p.inconsistent {
return nil
}
@ -124,7 +141,7 @@ func (p *pixels) flushIfInconsistent(context *opengl.Context) error {
return nil
}
func (p *pixels) flushIfNeeded(target *graphics.Image, context *opengl.Context) error {
func (p *Pixels) FlushIfNeeded(target *graphics.Image, context *opengl.Context) error {
if p.drawImageHistory == nil {
return nil
}
@ -133,7 +150,7 @@ func (p *pixels) flushIfNeeded(target *graphics.Image, context *opengl.Context)
}
if context == nil {
// context is null when this is not initialized yet.
p.makeInconsistent()
p.MakeInconsistent()
return nil
}
p.inconsistent = false
@ -147,21 +164,21 @@ func (p *pixels) flushIfNeeded(target *graphics.Image, context *opengl.Context)
return nil
}
func (p *pixels) hasHistory() bool {
func (p *Pixels) HasHistory() bool {
return p.drawImageHistory != nil
}
// restore restores the pixels using its history.
//
// restore is the only function that the pixel data is not present on GPU when this is called.
func (p *pixels) restore(context *opengl.Context, width, height int, filter Filter) (*graphics.Image, error) {
func (p *Pixels) Restore(context *opengl.Context, width, height int, filter opengl.Filter) (*graphics.Image, error) {
img := image.NewRGBA(image.Rect(0, 0, width, height))
if p.basePixels != nil {
for j := 0; j < height; j++ {
copy(img.Pix[j*img.Stride:], p.basePixels[j*width*4:(j+1)*width*4])
}
}
gimg, err := graphics.NewImageFromImage(img, glFilter(filter))
gimg, err := graphics.NewImageFromImage(img, filter)
if err != nil {
return nil, err
}