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Use surfman for managing GL surfaces

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Co-authored-by: Alan Jeffrey <ajeffrey@mozilla.com>
Co-authored-by: Zakor Gyula <gyula.zakor@h-lab.eu>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Patrick Walton 2019-10-15 12:57:00 -05:00 • committed by Alan Jeffrey
parent 48d918dcde
commit a358bca766
52 changed files with 1929 additions and 2195 deletions
Download patch file Download diff file Expand all files Collapse all files

126
components/script/dom/xrwebgllayer.rs
View file

@ -2,27 +2,26 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextMethods;
use crate::dom::bindings::codegen::Bindings::XRViewBinding::{XREye, XRViewMethods};
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding;
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding::XRWebGLLayerInit;
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding::XRWebGLLayerMethods;
use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextBinding::WebGLRenderingContextMethods;
use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use crate::dom::bindings::error::Error;
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::{reflect_dom_object, Reflector, DomObject};
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::globalscope::GlobalScope;
use crate::dom::webgl_validations::types::TexImageTarget;
use crate::dom::webglframebuffer::WebGLFramebuffer;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::window::Window;
use crate::dom::xrsession::XRSession;
use crate::dom::xrview::XRView;
use crate::dom::xrviewport::XRViewport;
use canvas_traits::webgl::WebGLFramebufferId;
use dom_struct::dom_struct;
use js::rust::CustomAutoRooter;
use std::convert::TryInto;
use webxr_api::SwapChainId as WebXRSwapChainId;
use webxr_api::Views;
#[dom_struct]
@ -32,6 +31,8 @@ pub struct XRWebGLLayer {
depth: bool,
stencil: bool,
alpha: bool,
#[ignore_malloc_size_of = "ids don't malloc"]
swap_chain_id: WebXRSwapChainId,
context: Dom<WebGLRenderingContext>,
session: Dom<XRSession>,
framebuffer: Dom<WebGLFramebuffer>,
@ -39,6 +40,7 @@ pub struct XRWebGLLayer {
impl XRWebGLLayer {
pub fn new_inherited(
swap_chain_id: WebXRSwapChainId,
session: &XRSession,
context: &WebGLRenderingContext,
init: &XRWebGLLayerInit,
@ -50,6 +52,7 @@ impl XRWebGLLayer {
depth: init.depth,
stencil: init.stencil,
alpha: init.alpha,
swap_chain_id,
context: Dom::from_ref(context),
session: Dom::from_ref(session),
framebuffer: Dom::from_ref(framebuffer),
@ -58,6 +61,7 @@ impl XRWebGLLayer {
pub fn new(
global: &GlobalScope,
swap_chain_id: WebXRSwapChainId,
session: &XRSession,
context: &WebGLRenderingContext,
init: &XRWebGLLayerInit,
@ -65,6 +69,7 @@ impl XRWebGLLayer {
) -> DomRoot<XRWebGLLayer> {
reflect_dom_object(
Box::new(XRWebGLLayer::new_inherited(
swap_chain_id,
session,
context,
init,
@ -89,108 +94,16 @@ impl XRWebGLLayer {
// XXXManishearth step 3: throw error if context is lost
// XXXManishearth step 4: check XR compat flag for immersive sessions
let cx = global.get_cx();
let old_fbo = context.bound_framebuffer();
let old_rbo = context.bound_renderbuffer();
let old_texture = context
.textures()
.active_texture_for_image_target(TexImageTarget::Texture2D);
// Step 9.2. "Initialize layer’s framebuffer to a new opaque framebuffer created with
// context and layerInit’s depth, stencil, and alpha values."
let framebuffer = context.CreateFramebuffer().ok_or(Error::Operation)?;
// Step 9.2. "Initialize layer’s framebuffer to a new opaque framebuffer created with context."
let size = session.with_session(|session| session.recommended_framebuffer_resolution());
let (swap_chain_id, framebuffer) =
WebGLFramebuffer::maybe_new_webxr(session, context, size).ok_or(Error::Operation)?;
// Step 9.3. "Allocate and initialize resources compatible with session’s XR device,
// including GPU accessible memory buffers, as required to support the compositing of layer."
// Create a new texture with size given by the session's recommended resolution
let texture = context.CreateTexture().ok_or(Error::Operation)?;
let render_buffer = context.CreateRenderbuffer().ok_or(Error::Operation)?;
let resolution = session.with_session(|s| s.recommended_framebuffer_resolution());
let mut pixels = CustomAutoRooter::new(None);
let mut clear_bits = constants::COLOR_BUFFER_BIT;
let formats = context.formats();
context.BindTexture(constants::TEXTURE_2D, Some(&texture));
let sc = context.TexImage2D(
constants::TEXTURE_2D,
0,
formats.texture_format,
resolution.width,
resolution.height,
0,
formats.texture_format,
formats.texture_type,
pixels.root(*cx),
);
// Bind the new texture to the framebuffer
context.BindFramebuffer(constants::FRAMEBUFFER, Some(&framebuffer));
context.FramebufferTexture2D(
constants::FRAMEBUFFER,
constants::COLOR_ATTACHMENT0,
constants::TEXTURE_2D,
Some(&texture),
0,
);
// Create backing store and bind a renderbuffer if requested
if init.depth || init.stencil {
let (internal_format, attachment) = if init.depth && init.stencil {
clear_bits |= constants::DEPTH_BUFFER_BIT | constants::STENCIL_BUFFER_BIT;
(
constants::DEPTH_STENCIL,
constants::DEPTH_STENCIL_ATTACHMENT,
)
} else if init.depth {
clear_bits |= constants::DEPTH_BUFFER_BIT;
(constants::DEPTH_COMPONENT16, constants::DEPTH_ATTACHMENT)
} else {
clear_bits |= constants::STENCIL_BUFFER_BIT;
(constants::STENCIL_INDEX8, constants::STENCIL_ATTACHMENT)
};
context.BindRenderbuffer(constants::RENDERBUFFER, Some(&render_buffer));
context.RenderbufferStorage(
constants::RENDERBUFFER,
internal_format,
resolution.width,
resolution.height,
);
context.FramebufferRenderbuffer(
constants::FRAMEBUFFER,
attachment,
constants::RENDERBUFFER,
Some(&render_buffer),
);
}
context.initialize_framebuffer(clear_bits);
// Restore the WebGL state while complaining about global mutable state
let fb_status = context.CheckFramebufferStatus(constants::FRAMEBUFFER);
let gl_status = context.GetError();
context.BindTexture(constants::TEXTURE_2D, old_texture.as_ref().map(|t| &**t));
context.BindFramebuffer(constants::FRAMEBUFFER, old_fbo.as_ref().map(|f| &**f));
context.BindRenderbuffer(constants::RENDERBUFFER, old_rbo.as_ref().map(|f| &**f));
// Step 9.4: "If layer’s resources were unable to be created for any reason,
// throw an OperationError and abort these steps."
if let Err(err) = sc {
error!("TexImage2D error {:?} while creating XR context", err);
return Err(Error::Operation);
}
if fb_status != constants::FRAMEBUFFER_COMPLETE {
error!(
"Framebuffer error {:x} while creating XR context",
fb_status
);
return Err(Error::Operation);
}
if gl_status != constants::NO_ERROR {
error!("GL error {:x} while creating XR context", gl_status);
return Err(Error::Operation);
}
// Ensure that we finish setting up this layer before continuing.
context.Finish();
@ -198,6 +111,7 @@ impl XRWebGLLayer {
// Step 10. "Return layer."
Ok(XRWebGLLayer::new(
&global.global(),
swap_chain_id,
session,
context,
init,
@ -205,12 +119,18 @@ impl XRWebGLLayer {
))
}
pub fn swap_chain_id(&self) -> WebXRSwapChainId {
self.swap_chain_id
}
pub fn session(&self) -> &XRSession {
&self.session
}
pub fn framebuffer(&self) -> &WebGLFramebuffer {
&self.framebuffer
pub fn swap_buffers(&self) {
if let WebGLFramebufferId::Opaque(id) = self.framebuffer.id() {
self.context.swap_buffers(Some(id));
}
}
}