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webgl: Add getters for other GL_*_BINDING enums.

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Fixes many subcases of object-deletion-behaviour.html.
This commit is contained in:
Eric Anholt 2016-08-18 01:18:45 -07:00
parent db9fe23903
commit e8b5f70429
2 changed files with 33 additions and 64 deletions
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42
components/script/dom/webglrenderingcontext.rs
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@ -79,6 +79,20 @@ macro_rules! handle_object_deletion {
};
}
macro_rules! object_binding_to_js_or_null {
($cx: expr, $binding:expr) => {
{
rooted!(in($cx) let mut rval = NullValue());
if let Some(bound_object) = $binding.get() {
unsafe {
bound_object.to_jsval($cx, rval.handle_mut());
}
}
rval.get()
}
};
}
/// Set of bitflags for texture unpacking (texImage2d, etc...)
bitflags! {
#[derive(HeapSizeOf, JSTraceable)]
@ -101,6 +115,7 @@ pub struct WebGLRenderingContext {
last_error: Cell<Option<WebGLError>>,
texture_unpacking_settings: Cell<TextureUnpacking>,
bound_framebuffer: MutNullableHeap<JS<WebGLFramebuffer>>,
bound_renderbuffer: MutNullableHeap<JS<WebGLRenderbuffer>>,
bound_texture_2d: MutNullableHeap<JS<WebGLTexture>>,
bound_texture_cube_map: MutNullableHeap<JS<WebGLTexture>>,
bound_buffer_array: MutNullableHeap<JS<WebGLBuffer>>,
@ -135,6 +150,7 @@ impl WebGLRenderingContext {
bound_texture_cube_map: MutNullableHeap::new(None),
bound_buffer_array: MutNullableHeap::new(None),
bound_buffer_element_array: MutNullableHeap::new(None),
bound_renderbuffer: MutNullableHeap::new(None),
current_program: MutNullableHeap::new(None),
current_vertex_attrib_0: Cell::new((0f32, 0f32, 0f32, 1f32)),
}
@ -531,19 +547,22 @@ 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
// Handle the GL_*_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.
// returned ID to the WebGL* object 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()
}
constants::ARRAY_BUFFER_BINDING =>
return object_binding_to_js_or_null!(cx, &self.bound_buffer_array),
constants::ELEMENT_ARRAY_BUFFER_BINDING =>
return object_binding_to_js_or_null!(cx, &self.bound_buffer_element_array),
constants::FRAMEBUFFER_BINDING =>
return object_binding_to_js_or_null!(cx, &self.bound_framebuffer),
constants::RENDERBUFFER_BINDING =>
return object_binding_to_js_or_null!(cx, &self.bound_renderbuffer),
constants::TEXTURE_BINDING_2D =>
return object_binding_to_js_or_null!(cx, &self.bound_texture_2d),
constants::TEXTURE_BINDING_CUBE_MAP =>
return object_binding_to_js_or_null!(cx, &self.bound_texture_cube_map),
_ => {}
}
@ -1136,6 +1155,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.7
fn DeleteRenderbuffer(&self, renderbuffer: Option<&WebGLRenderbuffer>) {
if let Some(renderbuffer) = renderbuffer {
handle_object_deletion!(self.bound_renderbuffer, renderbuffer);
renderbuffer.delete()
}
}