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Auto merge of #12934 - anholt:webgl-deletion-and-bindings, r=emilio

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webgl: object deletion and bindings

<!-- Please describe your changes on the following line: -->
This PR brings in some fixes to the wpt object-deletion-and-behaviour.html testcase.

The test still has many failures, but some of the things that were really getting in the way are fixed.

---
<!-- 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
- [ ] These changes fix #__ (github issue number if applicable).

<!-- Either: -->
- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/12934)
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This commit is contained in:
bors-servo 2016-08-27 00:05:54 -05:00 • committed by GitHub
commit 969aefe01f
2 changed files with 70 additions and 79 deletions
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91
components/script/dom/webglrenderingcontext.rs
View file

@ -61,6 +61,38 @@ macro_rules! handle_potential_webgl_error {
};
}
// From the GLES 2.0.25 spec, page 85:
//
// "If a texture that is currently bound to one of the targets
// TEXTURE_2D, or TEXTURE_CUBE_MAP is deleted, it is as though
// BindTexture had been executed with the same target and texture
// zero."
//
// and similar text occurs for other object types.
macro_rules! handle_object_deletion {
($binding:expr, $object:ident) => {
if let Some(bound_object) = $binding.get() {
if bound_object.id() == $object.id() {
$binding.set(None);
}
}
};
}
macro_rules! object_binding_to_js_or_null {
($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)]
@ -83,6 +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>>,
@ -117,6 +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)),
}
@ -513,19 +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),
_ => {}
}
@ -705,13 +742,19 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
return self.webgl_error(InvalidEnum);
}
if let Some(renderbuffer) = renderbuffer {
renderbuffer.bind(target)
} else {
// Unbind the currently bound renderbuffer
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::BindRenderbuffer(target, None)))
.unwrap()
match renderbuffer {
// Implementations differ on what to do in the deleted
// case: Chromium currently unbinds, and Gecko silently
// returns. The conformance tests don't cover this case.
Some(renderbuffer) if !renderbuffer.is_deleted() => {
renderbuffer.bind(target)
}
_ => {
// Unbind the currently bound renderbuffer
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::BindRenderbuffer(target, None)))
.unwrap()
}
}
}
@ -1095,6 +1138,8 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.5
fn DeleteBuffer(&self, buffer: Option<&WebGLBuffer>) {
if let Some(buffer) = buffer {
handle_object_deletion!(self.bound_buffer_array, buffer);
handle_object_deletion!(self.bound_buffer_element_array, buffer);
buffer.delete()
}
}
@ -1102,11 +1147,7 @@ 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);
}
}
handle_object_deletion!(self.bound_framebuffer, framebuffer);
framebuffer.delete()
}
}
@ -1114,6 +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()
}
}
@ -1121,6 +1163,8 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.8
fn DeleteTexture(&self, texture: Option<&WebGLTexture>) {
if let Some(texture) = texture {
handle_object_deletion!(self.bound_texture_2d, texture);
handle_object_deletion!(self.bound_texture_cube_map, texture);
texture.delete()
}
}
@ -1128,6 +1172,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn DeleteProgram(&self, program: Option<&WebGLProgram>) {
if let Some(program) = program {
handle_object_deletion!(self.current_program, program);
program.delete()
}
}