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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/canvas/XRWebGLLayer.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/canvas/XRWebGLLayer.cpp')
-rw-r--r--dom/canvas/XRWebGLLayer.cpp269
1 files changed, 269 insertions, 0 deletions
diff --git a/dom/canvas/XRWebGLLayer.cpp b/dom/canvas/XRWebGLLayer.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/XRWebGLLayer.h"
+#include "mozilla/dom/XRSession.h"
+#include "mozilla/dom/XRView.h"
+#include "mozilla/dom/XRViewport.h"
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLFramebuffer.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_webgl.h"
+#include "GLContext.h"
+#include "ScopedGLHelpers.h"
+#include "MozFramebuffer.h"
+#include "VRDisplayClient.h"
+#include "ClientWebGLContext.h"
+#include "nsContentUtils.h"
+#include "nsIScriptError.h"
+
+using namespace mozilla::gl;
+
+namespace mozilla::dom {
+
+static constexpr float XR_FRAMEBUFFER_MIN_SCALE = 0.2f;
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(XRWebGLLayer, mParent, mSession, mWebGL,
+ mFramebuffer, mLeftViewport,
+ mRightViewport)
+
+XRWebGLLayer::XRWebGLLayer(
+ nsISupports* aParent, XRSession& aSession, bool aIgnoreDepthValues,
+ double aFramebufferScaleFactor,
+ RefPtr<mozilla::ClientWebGLContext> aWebGLContext,
+ RefPtr<WebGLFramebufferJS> aFramebuffer,
+ const Maybe<const webgl::OpaqueFramebufferOptions>& aOptions)
+ : mParent(aParent),
+ mSession(&aSession),
+ mWebGL(std::move(aWebGLContext)),
+ mFramebufferScaleFactor(aFramebufferScaleFactor),
+ mCompositionDisabled(!aSession.IsImmersive()),
+ mIgnoreDepthValues(aIgnoreDepthValues),
+ mFramebuffer(std::move(aFramebuffer)),
+ mFramebufferOptions(aOptions) {}
+
+XRWebGLLayer::~XRWebGLLayer() { DeleteFramebuffer(); }
+
+void XRWebGLLayer::DeleteFramebuffer() {
+ if (mFramebuffer) {
+ mWebGL->DeleteFramebuffer(mFramebuffer.get(), true);
+ mFramebuffer = nullptr;
+ }
+}
+
+/* static */
+already_AddRefed<XRWebGLLayer> XRWebGLLayer::Constructor(
+ const GlobalObject& aGlobal, XRSession& aSession,
+ const WebGLRenderingContextOrWebGL2RenderingContext& aXRWebGLContext,
+ const XRWebGLLayerInit& aXRWebGLLayerInitDict, ErrorResult& aRv) {
+ // https://immersive-web.github.io/webxr/#dom-xrwebgllayer-xrwebgllayer
+
+ // Depth not supported in XR Compositor yet.
+ const bool ignoreDepthValues = true;
+
+ // If session’s ended value is true, throw an InvalidStateError and abort
+ // these steps.
+ if (aSession.IsEnded()) {
+ aRv.ThrowInvalidStateError(
+ "Can not create an XRWebGLLayer with an XRSession that has ended.");
+ return nullptr;
+ }
+ gfx::VRDisplayClient* display = aSession.GetDisplayClient();
+ const gfx::VRDisplayInfo& displayInfo = display->GetDisplayInfo();
+ const gfx::VRDisplayState& displayState = displayInfo.mDisplayState;
+
+ RefPtr<ClientWebGLContext> gl;
+ if (aXRWebGLContext.IsWebGLRenderingContext()) {
+ gl = &aXRWebGLContext.GetAsWebGLRenderingContext();
+ } else {
+ gl = &aXRWebGLContext.GetAsWebGL2RenderingContext();
+ }
+
+ // If context is lost, throw an InvalidStateError and abort these steps.
+ if (gl->IsContextLost()) {
+ aRv.ThrowInvalidStateError(
+ "Could not create an XRWebGLLayer, as the WebGL context was lost.");
+ return nullptr;
+ }
+
+ RefPtr<mozilla::WebGLFramebufferJS> framebuffer;
+ Maybe<const webgl::OpaqueFramebufferOptions> framebufferOptions;
+ if (aSession.IsImmersive()) {
+ // If session is an immersive session and context’s XR compatible boolean
+ // is false, throw an InvalidStateError and abort these steps.
+ if (!gl->IsXRCompatible()) {
+ aRv.ThrowInvalidStateError(
+ "Can not create an XRWebGLLayer without first calling "
+ "makeXRCompatible "
+ "on the WebGLRenderingContext or WebGL2RenderingContext.");
+ return nullptr;
+ }
+
+ const auto document = gl->GetCanvas()->OwnerDoc();
+ if (aXRWebGLLayerInitDict.mAlpha) {
+ nsContentUtils::ReportToConsoleNonLocalized(
+ u"XRWebGLLayer doesn't support no alpha value. "
+ "Alpha will be enabled."_ns,
+ nsIScriptError::warningFlag, "DOM"_ns, document);
+ }
+ if (aXRWebGLLayerInitDict.mDepth != aXRWebGLLayerInitDict.mStencil) {
+ nsContentUtils::ReportToConsoleNonLocalized(
+ nsLiteralString(
+ u"XRWebGLLayer doesn't support separate "
+ "depth or stencil buffers. They will be enabled together."),
+ nsIScriptError::warningFlag, "DOM"_ns, document);
+ }
+
+ bool antialias = aXRWebGLLayerInitDict.mAntialias;
+ if (antialias && !StaticPrefs::webgl_msaa_force()) {
+ antialias = false;
+ nsContentUtils::ReportToConsoleNonLocalized(
+ u"XRWebGLLayer antialiasing is not supported."
+ "Antialiasing will be disabled."_ns,
+ nsIScriptError::warningFlag, "DOM"_ns, document);
+ }
+
+ webgl::OpaqueFramebufferOptions options;
+ options.antialias = antialias;
+ options.depthStencil =
+ aXRWebGLLayerInitDict.mDepth || aXRWebGLLayerInitDict.mStencil;
+
+ // Clamp the requested framebuffer size to ensure it's not too
+ // small to see or larger than the max native resolution.
+ const float maxScale =
+ std::max(displayState.nativeFramebufferScaleFactor, 1.0f);
+ const float scaleFactor =
+ std::max(XR_FRAMEBUFFER_MIN_SCALE,
+ std::min((float)aXRWebGLLayerInitDict.mFramebufferScaleFactor,
+ maxScale));
+
+ options.width =
+ (int32_t)ceilf(2.0f * displayState.eyeResolution.width * scaleFactor);
+ options.height =
+ (int32_t)ceilf(displayState.eyeResolution.height * scaleFactor);
+ framebuffer = gl->CreateOpaqueFramebuffer(options);
+
+ if (!framebuffer) {
+ aRv.ThrowOperationError(
+ "Could not create an XRWebGLLayer. XRFramebuffer creation failed.");
+ return nullptr;
+ }
+ framebufferOptions.emplace(options);
+ }
+
+ RefPtr<XRWebGLLayer> obj =
+ new XRWebGLLayer(aGlobal.GetAsSupports(), aSession, ignoreDepthValues,
+ aXRWebGLLayerInitDict.mFramebufferScaleFactor, gl,
+ framebuffer, framebufferOptions);
+ return obj.forget();
+}
+
+JSObject* XRWebGLLayer::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return XRWebGLLayer_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsISupports* XRWebGLLayer::GetParentObject() const { return mParent; }
+
+bool XRWebGLLayer::Antialias() {
+ if (mFramebufferOptions) {
+ return mFramebufferOptions->antialias;
+ }
+ return mWebGL->ActualContextParameters().antialias;
+}
+
+bool XRWebGLLayer::Depth() {
+ if (mFramebufferOptions) {
+ return mFramebufferOptions->depthStencil;
+ }
+ return mWebGL->ActualContextParameters().depth;
+}
+
+bool XRWebGLLayer::Stencil() {
+ if (mFramebufferOptions) {
+ return mFramebufferOptions->depthStencil;
+ }
+ return mWebGL->ActualContextParameters().stencil;
+}
+
+bool XRWebGLLayer::Alpha() {
+ if (mFramebufferOptions) {
+ // Alpha is always true when using Opaque Framebuffers.
+ return true;
+ }
+ return mWebGL->ActualContextParameters().alpha;
+}
+
+bool XRWebGLLayer::IgnoreDepthValues() { return mIgnoreDepthValues; }
+
+WebGLFramebufferJS* XRWebGLLayer::GetFramebuffer() {
+ return mFramebuffer.get();
+}
+
+uint32_t XRWebGLLayer::FramebufferWidth() {
+ if (mFramebufferOptions) {
+ return mFramebufferOptions->width;
+ }
+ return mWebGL->GetWidth();
+}
+
+uint32_t XRWebGLLayer::FramebufferHeight() {
+ if (mFramebufferOptions) {
+ return mFramebufferOptions->height;
+ }
+ return mWebGL->GetHeight();
+}
+
+already_AddRefed<XRViewport> XRWebGLLayer::GetViewport(const XRView& aView) {
+ const int32_t width = (aView.Eye() == XREye::None) ? FramebufferWidth()
+ : (FramebufferWidth() / 2);
+ gfx::IntRect rect(0, 0, width, FramebufferHeight());
+ if (aView.Eye() == XREye::Right) {
+ rect.x = width;
+ }
+ RefPtr<XRViewport>& viewport =
+ aView.Eye() == XREye::Right ? mRightViewport : mLeftViewport;
+ if (!viewport) {
+ viewport = new XRViewport(mParent, rect);
+ } else {
+ viewport->mRect = rect;
+ }
+ RefPtr<XRViewport> result = viewport;
+ return result.forget();
+}
+
+// https://www.w3.org/TR/webxr/#dom-xrwebgllayer-getnativeframebufferscalefactor
+/* static */ double XRWebGLLayer::GetNativeFramebufferScaleFactor(
+ const GlobalObject& aGlobal, const XRSession& aSession) {
+ if (aSession.IsEnded()) {
+ return 0.0f;
+ }
+ if (!aSession.IsImmersive()) {
+ return 1.0f;
+ }
+
+ const gfx::VRDisplayInfo& displayInfo =
+ aSession.GetDisplayClient()->GetDisplayInfo();
+ return displayInfo.mDisplayState.nativeFramebufferScaleFactor;
+}
+
+void XRWebGLLayer::StartAnimationFrame() {
+ if (mFramebuffer) {
+ mWebGL->SetFramebufferIsInOpaqueRAF(mFramebuffer.get(), true);
+ }
+}
+
+void XRWebGLLayer::EndAnimationFrame() {
+ if (mFramebuffer) {
+ mWebGL->SetFramebufferIsInOpaqueRAF(mFramebuffer.get(), false);
+ }
+}
+
+HTMLCanvasElement* XRWebGLLayer::GetCanvas() { return mWebGL->GetCanvas(); }
+
+void XRWebGLLayer::SessionEnded() { DeleteFramebuffer(); }
+
+} // namespace mozilla::dom