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webgl: Honor ArrayBuffer or ArrayBufferView in bufferData and bufferSubData.

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This commit is contained in:
Emilio Cobos Álvarez 2016-09-18 00:41:41 -07:00
parent 7a559ad442
commit d7e2b40484
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GPG key ID: 056B727BB9C1027C
2 changed files with 40 additions and 5 deletions
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25
components/script/dom/bindings/conversions.rs
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@ -48,7 +48,7 @@ use js::glue::{RUST_JSID_IS_INT, RUST_JSID_TO_INT};
use js::glue::{RUST_JSID_IS_STRING, RUST_JSID_TO_STRING, UnwrapObject};
use js::jsapi::{HandleId, HandleObject, HandleValue, JSClass, JSContext};
use js::jsapi::{JSObject, JSString, JS_GetArrayBufferViewType, JS_GetClass};
use js::jsapi::{JS_GetLatin1StringCharsAndLength, JS_GetObjectAsArrayBufferView};
use js::jsapi::{JS_GetLatin1StringCharsAndLength, JS_GetObjectAsArrayBuffer, JS_GetObjectAsArrayBufferView};
use js::jsapi::{JS_GetReservedSlot, JS_GetTwoByteStringCharsAndLength, ToWindowProxyIfWindow};
use js::jsapi::{JS_IsArrayObject, JS_NewStringCopyN, JS_StringHasLatin1Chars};
use js::jsapi::{JS_WrapValue, MutableHandleValue, Type, IsObjectInContextCompartment};
@ -580,6 +580,29 @@ pub unsafe fn array_buffer_view_to_vec_checked<T>(abv: *mut JSObject) -> Option<
array_buffer_view_data_checked(abv).map(|data| data.to_vec())
}
/// Similar API as the array_buffer_view_xxx functions, but for ArrayBuffer
/// objects.
pub unsafe fn array_buffer_data<'a, T>(ab: *mut JSObject) -> Option<&'a mut [T]>
where T: ArrayBufferViewContents
{
assert!(!ab.is_null());
let mut byte_length = 0;
let mut ptr = ptr::null_mut();
let ret = JS_GetObjectAsArrayBuffer(ab, &mut byte_length, &mut ptr);
if ret.is_null() {
return None;
}
Some(slice::from_raw_parts_mut(ptr as *mut T, byte_length as usize / mem::size_of::<T>()))
}
/// Similar API to array_buffer_view_to_vec, but for ArrayBuffer objects.
pub unsafe fn array_buffer_to_vec<T>(ab: *mut JSObject) -> Option<Vec<T>>
where T: ArrayBufferViewContents
{
array_buffer_data(ab).map(|data| data.to_vec())
}
/// Returns whether `value` is an array-like object.
/// Note: Currently only Arrays are supported.
/// TODO: Expand this to support sequences and other array-like objects