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jsutil: Bug fix: byteLenght must be accessed every time to get the latest value

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This commit is contained in:
Hajime Hoshi 2020-12-26 17:04:12 +09:00
parent 111709d3aa
commit 3d48922d8c
1 changed files with 6 additions and 12 deletions
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18
internal/jsutil/buf_js.go
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@ -28,34 +28,28 @@ var (
// temporaryArrayBuffer is a temporary buffer used at gl.readPixels or gl.texSubImage2D.
// The read data is converted to Go's byte slice as soon as possible.
// To avoid often allocating ArrayBuffer, reuse the buffer whenever possible.
temporaryArrayBuffer = arrayBuffer.New(16)
temporaryArrayBufferByteLength = temporaryArrayBuffer.Get("byteLength")
temporaryArrayBuffer = arrayBuffer.New(16)
// temporaryUint8Array is a Uint8ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
temporaryUint8Array = uint8Array.New(temporaryArrayBuffer)
temporaryUint8ArrayByteLength = temporaryUint8Array.Get("byteLength")
temporaryUint8Array = uint8Array.New(temporaryArrayBuffer)
// temporaryFloat32Array is a Float32ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
temporaryFloat32Array = float32Array.New(temporaryArrayBuffer)
temporaryFloat32ArrayByteLength = temporaryFloat32Array.Get("byteLength")
temporaryFloat32Array = float32Array.New(temporaryArrayBuffer)
)
func ensureTemporaryArrayBufferSize(byteLength int) {
bufl := temporaryArrayBufferByteLength.Int()
bufl := temporaryArrayBuffer.Get("byteLength").Int()
if bufl < byteLength {
for bufl < byteLength {
bufl *= 2
}
temporaryArrayBuffer = arrayBuffer.New(bufl)
temporaryArrayBufferByteLength = temporaryArrayBuffer.Get("byteLength")
}
if temporaryUint8ArrayByteLength.Int() < bufl {
if temporaryUint8Array.Get("byteLength").Int() < bufl {
temporaryUint8Array = uint8Array.New(temporaryArrayBuffer)
temporaryUint8ArrayByteLength = temporaryUint8Array.Get("byteLength")
}
if temporaryFloat32ArrayByteLength.Int() < bufl {
if temporaryFloat32Array.Get("byteLength").Int() < bufl {
temporaryFloat32Array = float32Array.New(temporaryArrayBuffer)
temporaryFloat32ArrayByteLength = temporaryFloat32Array.Get("byteLength")
}
}