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f5f5a559
T
three.js
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体验新版 GitCode,发现更多精彩内容 >>
提交
f5f5a559
编写于
2月 22, 2018
作者:
F
Fernando Serrano
提交者:
Mr.doob
2月 21, 2018
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Add padding to glb chunks
上级
cb9f5ca1
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
36 addition
and
3 deletion
+36
-3
examples/js/exporters/GLTFExporter.js
examples/js/exporters/GLTFExporter.js
+36
-3
未找到文件。
examples/js/exporters/GLTFExporter.js
浏览文件 @
f5f5a559
...
@@ -128,7 +128,18 @@ THREE.GLTFExporter.prototype = {
...
@@ -128,7 +128,18 @@ THREE.GLTFExporter.prototype = {
* @param {string} text
* @param {string} text
* @return {ArrayBuffer}
* @return {ArrayBuffer}
*/
*/
function
stringToArrayBuffer
(
text
)
{
function
stringToArrayBuffer
(
text
,
padded
)
{
if
(
padded
)
{
var
pad
=
getPaddedBufferSize
(
text
.
length
)
-
text
.
length
;
for
(
var
i
=
0
;
i
<
pad
;
i
++
)
{
text
+=
'
'
;
}
}
if
(
window
.
TextEncoder
!==
undefined
)
{
if
(
window
.
TextEncoder
!==
undefined
)
{
...
@@ -194,6 +205,28 @@ THREE.GLTFExporter.prototype = {
...
@@ -194,6 +205,28 @@ THREE.GLTFExporter.prototype = {
}
}
/**
* Returns a buffer aligned to 4-byte boundary.
*
* @param {ArrayBuffer} arrayBuffer Buffer to pad
* @returns {ArrayBuffer} The same buffer if it's already aligned to 4-byte boundary or a new buffer
*/
function
getPaddedArrayBuffer
(
arrayBuffer
)
{
var
paddedLength
=
getPaddedBufferSize
(
arrayBuffer
.
byteLength
);
if
(
paddedLength
!==
arrayBuffer
.
byteLength
)
{
var
paddedBuffer
=
new
ArrayBuffer
(
paddedLength
);
new
Uint8Array
(
paddedBuffer
).
set
(
new
Uint8Array
(
arrayBuffer
));
return
paddedBuffer
;
}
return
arrayBuffer
;
}
/**
/**
* Process a buffer to append to the default one.
* Process a buffer to append to the default one.
* @param {THREE.BufferAttribute} attribute Attribute to store
* @param {THREE.BufferAttribute} attribute Attribute to store
...
@@ -1308,14 +1341,14 @@ THREE.GLTFExporter.prototype = {
...
@@ -1308,14 +1341,14 @@ THREE.GLTFExporter.prototype = {
reader
.
onloadend
=
function
()
{
reader
.
onloadend
=
function
()
{
// Binary chunk.
// Binary chunk.
var
binaryChunk
=
reader
.
result
;
var
binaryChunk
=
getPaddedArrayBuffer
(
reader
.
result
)
;
var
binaryChunkPrefix
=
new
DataView
(
new
ArrayBuffer
(
GLB_CHUNK_PREFIX_BYTES
)
);
var
binaryChunkPrefix
=
new
DataView
(
new
ArrayBuffer
(
GLB_CHUNK_PREFIX_BYTES
)
);
binaryChunkPrefix
.
setUint32
(
0
,
binaryChunk
.
byteLength
,
true
);
binaryChunkPrefix
.
setUint32
(
0
,
binaryChunk
.
byteLength
,
true
);
binaryChunkPrefix
.
setUint32
(
4
,
GLB_CHUNK_TYPE_BIN
,
true
);
binaryChunkPrefix
.
setUint32
(
4
,
GLB_CHUNK_TYPE_BIN
,
true
);
// JSON chunk.
// JSON chunk.
delete
outputJSON
.
buffers
[
0
].
uri
;
// Omitted URI indicates use of binary chunk.
delete
outputJSON
.
buffers
[
0
].
uri
;
// Omitted URI indicates use of binary chunk.
var
jsonChunk
=
stringToArrayBuffer
(
JSON
.
stringify
(
outputJSON
)
);
var
jsonChunk
=
stringToArrayBuffer
(
JSON
.
stringify
(
outputJSON
)
,
true
);
var
jsonChunkPrefix
=
new
DataView
(
new
ArrayBuffer
(
GLB_CHUNK_PREFIX_BYTES
)
);
var
jsonChunkPrefix
=
new
DataView
(
new
ArrayBuffer
(
GLB_CHUNK_PREFIX_BYTES
)
);
jsonChunkPrefix
.
setUint32
(
0
,
jsonChunk
.
byteLength
,
true
);
jsonChunkPrefix
.
setUint32
(
0
,
jsonChunk
.
byteLength
,
true
);
jsonChunkPrefix
.
setUint32
(
4
,
GLB_CHUNK_TYPE_JSON
,
true
);
jsonChunkPrefix
.
setUint32
(
4
,
GLB_CHUNK_TYPE_JSON
,
true
);
...
...
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