func (b *bufferImpl) preUpload(reusable bool) {
b.mu.Lock()
defer b.mu.Unlock()
if b.released {
panic("x11driver: Buffer.Upload called after Buffer.Release")
}
if b.nUpload == 0 {
swizzle.BGRA(b.buf)
}
b.nUpload++
b.reusable = b.reusable && reusable
}
func (b *bufferImpl) preUpload() {
b.mu.Lock()
if b.released {
b.mu.Unlock()
panic("x11driver: Buffer.Upload called after Buffer.Release")
}
needsSwizzle := b.nUpload == 0
b.nUpload++
b.mu.Unlock()
if needsSwizzle {
swizzle.BGRA(b.buf)
}
}
func (b *bufferImpl) postUpload() {
b.mu.Lock()
defer b.mu.Unlock()
b.nUpload--
if b.nUpload != 0 {
return
}
if b.released {
go b.cleanUp()
} else if b.reusable {
swizzle.BGRA(b.buf)
}
}
func (b *bufferImpl) postUpload() {
b.mu.Lock()
b.nUpload--
more := b.nUpload != 0
released := b.released
b.mu.Unlock()
if more {
return
}
if released {
b.cleanUp()
} else {
swizzle.BGRA(b.buf)
}
}