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Implement GPUBuffer.getMappedRange()

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This commit is contained in:
Kunal Mohan 2020-06-29 22:37:30 +05:30
parent 19b36bd795
commit 575036bb88
4 changed files with 132 additions and 91 deletions
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22
components/script/dom/gpudevice.rs
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@ -4,7 +4,7 @@
#![allow(unsafe_code)]
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::cell::{DomRefCell, RefCell};
use crate::dom::bindings::codegen::Bindings::GPUBindGroupBinding::{
GPUBindGroupDescriptor, GPUBindingResource,
};
@ -54,8 +54,8 @@ use crate::script_runtime::JSContext as SafeJSContext;
use arrayvec::ArrayVec;
use dom_struct::dom_struct;
use js::jsapi::{Heap, JSObject};
use js::typedarray::{ArrayBuffer, CreateWith};
use std::ptr::{self, NonNull};
use std::ptr::NonNull;
use std::rc::Rc;
use webgpu::wgpu::binding_model::BufferBinding;
use webgpu::{self, wgt, WebGPU, WebGPUBindings, WebGPURequest};
@ -177,24 +177,16 @@ impl GPUDeviceMethods for GPUDevice {
.expect("Failed to create WebGPU buffer");
let buffer = webgpu::WebGPUBuffer(id);
let mapping = RootedTraceableBox::new(Heap::default());
let mapping;
let state;
let mapping_range;
if descriptor.mappedAtCreation {
let cx = self.global().get_cx();
rooted!(in(*cx) let mut array_buffer = ptr::null_mut::<JSObject>());
unsafe {
assert!(ArrayBuffer::create(
*cx,
CreateWith::Length(descriptor.size as u32),
array_buffer.handle_mut(),
)
.is_ok());
}
mapping.set(array_buffer.get());
let buf_data = vec![0u8; descriptor.size as usize];
mapping = Rc::new(RefCell::new(Some(buf_data)));
state = GPUBufferState::MappedAtCreation;
mapping_range = 0..descriptor.size;
} else {
mapping = Rc::new(RefCell::new(None));
state = GPUBufferState::Unmapped;
mapping_range = 0..0;
}