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Auto merge of #12857 - anholt:webgl-framebuffer-binding-2, r=emilio

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Implement GL_FRAMEBUFFER_BINDING (and fix a VertexAttrib1fv typo)

<!-- Please describe your changes on the following line: -->
This PR fixes many webgl conformance test failures due to missing support for a getParameter() call in the webgl test utils.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #12852

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- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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This commit is contained in:
bors-servo 2016-08-14 04:46:17 -05:00 • committed by GitHub
commit 8472699885
5 changed files with 45 additions and 137 deletions
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26
components/script/dom/webglrenderingcontext.rs
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@ -82,6 +82,7 @@ pub struct WebGLRenderingContext {
#[ignore_heap_size_of = "Defined in webrender_traits"]
last_error: Cell<Option<WebGLError>>,
texture_unpacking_settings: Cell<TextureUnpacking>,
bound_framebuffer: MutNullableHeap<JS<WebGLFramebuffer>>,
bound_texture_2d: MutNullableHeap<JS<WebGLTexture>>,
bound_texture_cube_map: MutNullableHeap<JS<WebGLTexture>>,
bound_buffer_array: MutNullableHeap<JS<WebGLBuffer>>,
@ -111,6 +112,7 @@ impl WebGLRenderingContext {
canvas: JS::from_ref(canvas),
last_error: Cell::new(None),
texture_unpacking_settings: Cell::new(CONVERT_COLORSPACE),
bound_framebuffer: MutNullableHeap::new(None),
bound_texture_2d: MutNullableHeap::new(None),
bound_texture_cube_map: MutNullableHeap::new(None),
bound_buffer_array: MutNullableHeap::new(None),
@ -511,6 +513,22 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
#[allow(unsafe_code)]
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn GetParameter(&self, cx: *mut JSContext, parameter: u32) -> JSVal {
// Handle the GL_FRAMEBUFFER_BINDING without going all the way
// to the GL, since we would just need to map back from GL's
// returned ID to the WebGLFramebuffer we're tracking.
match parameter {
constants::FRAMEBUFFER_BINDING => {
rooted!(in(cx) let mut rval = NullValue());
if let Some(bound_fb) = self.bound_framebuffer.get() {
unsafe {
bound_fb.to_jsval(cx, rval.handle_mut());
}
}
return rval.get()
}
_ => {}
}
let (sender, receiver) = ipc::channel().unwrap();
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::GetParameter(parameter, sender)))
@ -671,6 +689,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
return self.webgl_error(InvalidOperation);
}
self.bound_framebuffer.set(framebuffer);
if let Some(framebuffer) = framebuffer {
framebuffer.bind(target)
} else {
@ -1083,6 +1102,11 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.6
fn DeleteFramebuffer(&self, framebuffer: Option<&WebGLFramebuffer>) {
if let Some(framebuffer) = framebuffer {
if let Some(bound_fb) = self.bound_framebuffer.get() {
if bound_fb.id() == framebuffer.id() {
self.bound_framebuffer.set(None);
}
}
framebuffer.delete()
}
}
@ -1788,7 +1812,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
fn VertexAttrib1fv(&self, _cx: *mut JSContext, indx: u32, data: *mut JSObject) {
if let Some(data_vec) = array_buffer_view_to_vec_checked::<f32>(data) {
if data_vec.len() < 4 {
if data_vec.len() < 1 {
return self.webgl_error(InvalidOperation);
}
self.vertex_attrib(indx, data_vec[0], 0f32, 0f32, 1f32)