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webgl: implement getError

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This commit is contained in:
ecoal95 2015-06-20 20:37:44 +02:00
parent 42bd43a696
commit 9b306aced6
4 changed files with 28 additions and 5 deletions
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26
components/script/dom/webglrenderingcontext.rs
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@ -26,6 +26,7 @@ use euclid::size::Size2D;
use js::jsapi::{JSContext, JSObject, RootedValue};
use js::jsapi::{JS_GetFloat32ArrayData, JS_GetObjectAsArrayBufferView};
use js::jsval::{JSVal, UndefinedValue, NullValue, Int32Value, BooleanValue};
use std::cell::Cell;
use std::mem;
use std::ptr;
use std::slice;
@ -53,6 +54,7 @@ pub struct WebGLRenderingContext {
global: GlobalField,
renderer: Sender<CanvasMsg>,
canvas: JS<HTMLCanvasElement>,
last_error: Cell<WebGLError>,
}
impl WebGLRenderingContext {
@ -67,6 +69,7 @@ impl WebGLRenderingContext {
reflector_: Reflector::new(),
global: GlobalField::from_rooted(&global),
renderer: chan,
last_error: Cell::new(WebGLError::NoError),
canvas: JS::from_ref(canvas),
})
}
@ -129,6 +132,20 @@ impl<'a> WebGLRenderingContextMethods for &'a WebGLRenderingContext {
rval.ptr
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn GetError(self) -> u32 {
let error_code = match self.last_error.get() {
WebGLError::NoError => constants::NO_ERROR,
WebGLError::InvalidEnum => constants::INVALID_ENUM,
WebGLError::InvalidValue => constants::INVALID_VALUE,
WebGLError::InvalidOperation => constants::INVALID_OPERATION,
WebGLError::OutOfMemory => constants::OUT_OF_MEMORY,
WebGLError::ContextLost => constants::CONTEXT_LOST_WEBGL,
};
self.last_error.set(WebGLError::NoError);
error_code
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.2
fn GetContextAttributes(self) -> Option<WebGLContextAttributes> {
let (sender, receiver) = channel();
@ -482,9 +499,12 @@ pub trait WebGLRenderingContextHelpers {
}
impl<'a> WebGLRenderingContextHelpers for &'a WebGLRenderingContext {
fn handle_webgl_error(&self, _: WebGLError) {
debug!("WebGL error received");
// ignore for now
fn handle_webgl_error(&self, err: WebGLError) {
// If an error has been detected no further errors must be
// recorded until `getError` has been called
if self.last_error.get() == WebGLError::NoError {
self.last_error.set(err);
}
}
}