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ui/app: (wasm) replace TypedArrayOf with the CopyBytes* API

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syscall/js.TypedArrayOf is going away in Go 1.13 and is replaced by
the CopyBytesToGo, CopyBytesToJS.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-05-23 10:17:15 +02:00
parent edec032ae6
commit c3ea85801c
2 changed files with 37 additions and 10 deletions
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apps/gophers/web/wasm_exec.js
+35 -4
View File
@@ -387,6 +387,34 @@
mem().setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
},
// func copyBytesToGo(dst []byte, src ref) (int, bool)
"syscall/js.copyBytesToGo": (sp) => {
const dst = loadSlice(sp + 8);
const src = loadValue(sp + 32);
if (!(src instanceof Uint8Array)) {
mem().setUint8(sp + 48, 0);
return;
}
const toCopy = src.subarray(0, dst.length);
dst.set(toCopy);
setInt64(sp + 40, toCopy.length);
mem().setUint8(sp + 48, 1);
},
// func copyBytesToJS(dst ref, src []byte) (int, bool)
"syscall/js.copyBytesToJS": (sp) => {
const dst = loadValue(sp + 8);
const src = loadSlice(sp + 16);
if (!(dst instanceof Uint8Array)) {
mem().setUint8(sp + 48, 0);
return;
}
const toCopy = src.subarray(0, dst.length);
dst.set(toCopy);
setInt64(sp + 40, toCopy.length);
mem().setUint8(sp + 48, 1);
},
"debug": (value) => {
console.log(value);
},
@@ -403,7 +431,6 @@
true,
false,
global,
this._inst.exports.mem,
this,
];
this._refs = new Map();
@@ -415,9 +442,13 @@
let offset = 4096;
const strPtr = (str) => {
let ptr = offset;
new Uint8Array(mem.buffer, offset, str.length + 1).set(encoder.encode(str + "\0"));
offset += str.length + (8 - (str.length % 8));
const ptr = offset;
const bytes = encoder.encode(str + "\0");
new Uint8Array(mem.buffer, offset, bytes.length).set(bytes);
offset += bytes.length;
if (offset % 8 !== 0) {
offset += 8 - (offset % 8);
}
return ptr;
};
ui/app/internal/gl/gl_js.go
+2 -6
View File
@@ -245,9 +245,7 @@ func (f *Functions) RenderbufferStorage(target, internalformat Enum, width, heig
func (f *Functions) ReadPixels(x, y, width, height int, format, ty Enum, data []byte) {
f.resizeByteBuffer(len(data))
f.Ctx.Call("readPixels", x, y, width, height, int(format), int(ty), f.byteBuf)
sub := f.byteBuf.Call("subarray", 0, len(data))
d := js.TypedArrayOf(data)
d.Call("set", sub)
js.CopyBytesToGo(data, f.byteBuf)
}
func (f *Functions) Scissor(x, y, width, height int32) {
f.Ctx.Call("scissor", x, y, width, height)
@@ -294,9 +292,7 @@ func (f *Functions) byteArrayOf(data []byte) js.Value {
return js.Null()
}
f.resizeByteBuffer(len(data))
s := js.TypedArrayOf(data)
f.byteBuf.Call("set", s)
s.Release()
js.CopyBytesToJS(f.byteBuf, data)
return f.byteBuf
}