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buffered: Bug fix: Resolve pixels only when Set is called

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Fixes #977
This commit is contained in:
Hajime Hoshi 2019-11-09 05:43:33 +09:00
parent 529dddda53
commit ec59e9b9ae
1 changed files with 14 additions and 11 deletions
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25
internal/buffered/image.go
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@ -27,7 +27,8 @@ type Image struct {
width int width int
height int height int
pendingPixels []byte pixels []byte
needsToResolvePixels bool
} }
func BeginFrame() error { func BeginFrame() error {
@ -83,18 +84,19 @@ func NewScreenFramebufferImage(width, height int) *Image {
} }
func (i *Image) invalidatePendingPixels() { func (i *Image) invalidatePendingPixels() {
i.pendingPixels = nil i.pixels = nil
} }
func (i *Image) resolvePendingPixels(keepPendingPixels bool) { func (i *Image) resolvePendingPixels(keepPendingPixels bool) {
if i.pendingPixels == nil { if !i.needsToResolvePixels {
return return
} }
i.img.ReplacePixels(i.pendingPixels) i.img.ReplacePixels(i.pixels)
if !keepPendingPixels { if !keepPendingPixels {
i.pendingPixels = nil i.pixels = nil
} }
i.needsToResolvePixels = false
} }
func (i *Image) MarkDisposed() { func (i *Image) MarkDisposed() {
@ -138,7 +140,7 @@ func (i *Image) Set(x, y int, r, g, b, a byte) {
func (img *Image) set(x, y int, r, g, b, a byte) { func (img *Image) set(x, y int, r, g, b, a byte) {
w, h := img.width, img.height w, h := img.width, img.height
if img.pendingPixels == nil { if img.pixels == nil {
pix := make([]byte, 4*w*h) pix := make([]byte, 4*w*h)
idx := 0 idx := 0
for j := 0; j < h; j++ { for j := 0; j < h; j++ {
@ -151,12 +153,13 @@ func (img *Image) set(x, y int, r, g, b, a byte) {
idx++ idx++
} }
} }
img.pendingPixels = pix img.pixels = pix
} }
img.pendingPixels[4*(x+y*w)] = r img.pixels[4*(x+y*w)] = r
img.pendingPixels[4*(x+y*w)+1] = g img.pixels[4*(x+y*w)+1] = g
img.pendingPixels[4*(x+y*w)+2] = b img.pixels[4*(x+y*w)+2] = b
img.pendingPixels[4*(x+y*w)+3] = a img.pixels[4*(x+y*w)+3] = a
img.needsToResolvePixels = true
} }
func (i *Image) Dump(name string) error { func (i *Image) Dump(name string) error {