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WebGLRenderingContext getters and getParameter

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This implements the `canvas`, `drawingBufferHeight` and
`drawingBufferWidth` getters to `WebGLRenderingContext`, and an initial
version of `getParameter`.
This commit is contained in:
ecoal95 2015-06-01 13:34:28 +02:00
parent 0de09b936e
commit eff2bb4310
6 changed files with 89 additions and 13 deletions
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33
components/script/dom/webglrenderingcontext.rs
View file

@ -10,6 +10,7 @@ use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{
use dom::bindings::global::{GlobalRef, GlobalField};
use dom::bindings::js::{JS, JSRef, LayoutJS, Temporary};
use dom::bindings::utils::{Reflector, reflect_dom_object};
use dom::bindings::conversions::ToJSValConvertible;
use dom::htmlcanvaselement::{HTMLCanvasElement};
use dom::webglbuffer::{WebGLBuffer, WebGLBufferHelpers};
use dom::webglshader::{WebGLShader, WebGLShaderHelpers};
@ -73,6 +74,38 @@ impl Drop for WebGLRenderingContext {
}
impl<'a> WebGLRenderingContextMethods for JSRef<'a, WebGLRenderingContext> {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.1
fn Canvas(self) -> Temporary<HTMLCanvasElement> {
Temporary::from_rooted(self.canvas)
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.1
fn DrawingBufferWidth(self) -> i32 {
let (sender, receiver) = channel();
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::DrawingBufferWidth(sender))).unwrap();
receiver.recv().unwrap()
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.1
fn DrawingBufferHeight(self) -> i32 {
let (sender, receiver) = channel();
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::DrawingBufferHeight(sender))).unwrap();
receiver.recv().unwrap()
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn GetParameter(self, cx: *mut JSContext, parameter: u32) -> JSVal {
// TODO(ecoal95): Implement the missing parameters from the spec
match parameter {
WebGLRenderingContextConstants::VERSION =>
DOMString::from_str("WebGL 1.0").to_jsval(cx),
WebGLRenderingContextConstants::RENDERER |
WebGLRenderingContextConstants::VENDOR =>
DOMString::from_str("Mozilla/Servo").to_jsval(cx),
_ => NullValue(),
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.2
fn GetContextAttributes(self) -> Option<WebGLContextAttributes> {
let (sender, receiver) = channel();

14
components/script/dom/webidls/WebGLRenderingContext.webidl
View file

@ -307,9 +307,9 @@ interface WebGLRenderingContextBase
//const GLenum DECR_WRAP = 0x8508;
/* StringName */
//const GLenum VENDOR = 0x1F00;
//const GLenum RENDERER = 0x1F01;
//const GLenum VERSION = 0x1F02;
const GLenum VENDOR = 0x1F00;
const GLenum RENDERER = 0x1F01;
const GLenum VERSION = 0x1F02;
/* TextureMagFilter */
//const GLenum NEAREST = 0x2600;
@ -477,9 +477,9 @@ interface WebGLRenderingContextBase
//const GLenum UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243;
//const GLenum BROWSER_DEFAULT_WEBGL = 0x9244;
//readonly attribute HTMLCanvasElement canvas;
//readonly attribute GLsizei drawingBufferWidth;
//readonly attribute GLsizei drawingBufferHeight;
readonly attribute HTMLCanvasElement canvas;
readonly attribute GLsizei drawingBufferWidth;
readonly attribute GLsizei drawingBufferHeight;
[WebGLHandlesContextLoss] WebGLContextAttributes? getContextAttributes();
//[WebGLHandlesContextLoss] boolean isContextLost();
@ -577,7 +577,7 @@ interface WebGLRenderingContextBase
[WebGLHandlesContextLoss] GLint getAttribLocation(WebGLProgram? program, DOMString name);
//any getBufferParameter(GLenum target, GLenum pname);
//any getParameter(GLenum pname);
any getParameter(GLenum pname);
//[WebGLHandlesContextLoss] GLenum getError();