1 files changed, 231 insertions, 0 deletions
diff --git a/dom/canvas/HostWebGLContext.cpp b/dom/canvas/HostWebGLContext.cpp
new file mode 100644
index 0000000000..36029e33ed
--- /dev/null
+++ b/dom/canvas/HostWebGLContext.cpp
@@ -0,0 +1,231 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "HostWebGLContext.h"
+
+#include "CompositableHost.h"
+#include "mozilla/layers/LayersSurfaces.h"
+
+#include "MozFramebuffer.h"
+#include "TexUnpackBlob.h"
+#include "WebGL2Context.h"
+#include "WebGLBuffer.h"
+#include "WebGLContext.h"
+#include "WebGLFramebuffer.h"
+#include "WebGLMemoryTracker.h"
+#include "WebGLParent.h"
+#include "WebGLProgram.h"
+#include "WebGLRenderbuffer.h"
+#include "WebGLSampler.h"
+#include "WebGLShader.h"
+#include "WebGLSync.h"
+#include "WebGLTexture.h"
+#include "WebGLTransformFeedback.h"
+#include "WebGLVertexArray.h"
+#include "WebGLQuery.h"
+
+#include "mozilla/StaticMutex.h"
+
+namespace mozilla {
+
+// -
+
+static StaticMutex sContextSetLock MOZ_UNANNOTATED;
+
+static std::unordered_set<HostWebGLContext*>& DeferredStaticContextSet() {
+  static std::unordered_set<HostWebGLContext*> sContextSet;
+  return sContextSet;
+}
+
+LockedOutstandingContexts::LockedOutstandingContexts()
+    : contexts(DeferredStaticContextSet()) {
+  sContextSetLock.Lock();
+}
+
+LockedOutstandingContexts::~LockedOutstandingContexts() {
+  sContextSetLock.Unlock();
+}
+
+// -
+
+/*static*/
+UniquePtr<HostWebGLContext> HostWebGLContext::Create(
+    const OwnerData& ownerData, const webgl::InitContextDesc& desc,
+    webgl::InitContextResult* const out) {
+  auto host = WrapUnique(new HostWebGLContext(ownerData));
+  auto webgl = WebGLContext::Create(*host, desc, out);
+  if (!webgl) return nullptr;
+  return host;
+}
+
+HostWebGLContext::HostWebGLContext(const OwnerData& ownerData)
+    : mOwnerData(ownerData) {
+  StaticMutexAutoLock lock(sContextSetLock);
+  auto& contexts = DeferredStaticContextSet();
+  (void)contexts.insert(this);
+}
+
+HostWebGLContext::~HostWebGLContext() {
+  StaticMutexAutoLock lock(sContextSetLock);
+  auto& contexts = DeferredStaticContextSet();
+  (void)contexts.erase(this);
+}
+
+// -
+
+void HostWebGLContext::OnContextLoss(const webgl::ContextLossReason reason) {
+  if (mOwnerData.inProcess) {
+    mOwnerData.inProcess->OnContextLoss(reason);
+  } else {
+    (void)mOwnerData.outOfProcess->SendOnContextLoss(reason);
+  }
+}
+
+void HostWebGLContext::JsWarning(const std::string& text) const {
+  if (mOwnerData.inProcess) {
+    mOwnerData.inProcess->JsWarning(text);
+    return;
+  }
+  (void)mOwnerData.outOfProcess->SendJsWarning(text);
+}
+
+Maybe<layers::SurfaceDescriptor> HostWebGLContext::GetFrontBuffer(
+    const ObjectId xrFb, const bool webvr) const {
+  return mContext->GetFrontBuffer(AutoResolve(xrFb), webvr);
+}
+
+//////////////////////////////////////////////
+// Creation
+
+void HostWebGLContext::CreateBuffer(const ObjectId id) {
+  auto& slot = mBufferMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateBuffer();
+}
+
+void HostWebGLContext::CreateFramebuffer(const ObjectId id) {
+  auto& slot = mFramebufferMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateFramebuffer();
+}
+
+bool HostWebGLContext::CreateOpaqueFramebuffer(
+    const ObjectId id, const webgl::OpaqueFramebufferOptions& options) {
+  auto& slot = mFramebufferMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return false;
+  }
+  slot = mContext->CreateOpaqueFramebuffer(options);
+  return slot;
+}
+
+void HostWebGLContext::CreateProgram(const ObjectId id) {
+  auto& slot = mProgramMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateProgram();
+}
+
+void HostWebGLContext::CreateQuery(const ObjectId id) {
+  auto& slot = mQueryMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateQuery();
+}
+
+void HostWebGLContext::CreateRenderbuffer(const ObjectId id) {
+  auto& slot = mRenderbufferMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateRenderbuffer();
+}
+
+void HostWebGLContext::CreateSampler(const ObjectId id) {
+  auto& slot = mSamplerMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = GetWebGL2Context()->CreateSampler();
+}
+
+void HostWebGLContext::CreateShader(const ObjectId id, GLenum type) {
+  auto& slot = mShaderMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateShader(type);
+}
+
+void HostWebGLContext::CreateSync(const ObjectId id) {
+  auto& slot = mSyncMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = GetWebGL2Context()->FenceSync(LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+}
+
+void HostWebGLContext::CreateTexture(const ObjectId id) {
+  auto& slot = mTextureMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateTexture();
+}
+
+void HostWebGLContext::CreateTransformFeedback(const ObjectId id) {
+  auto& slot = mTransformFeedbackMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = GetWebGL2Context()->CreateTransformFeedback();
+}
+
+void HostWebGLContext::CreateVertexArray(const ObjectId id) {
+  auto& slot = mVertexArrayMap[id];
+  if (slot) {
+    MOZ_ASSERT(false, "duplicate ID");
+    return;
+  }
+  slot = mContext->CreateVertexArray();
+}
+
+////////////////////////
+
+#define _(X) \
+  void HostWebGLContext::Delete##X(const ObjectId id) { m##X##Map.erase(id); }
+
+_(Buffer)
+_(Framebuffer)
+_(Program)
+_(Query)
+_(Renderbuffer)
+_(Sampler)
+_(Shader)
+_(Sync)
+_(Texture)
+_(TransformFeedback)
+_(VertexArray)
+
+#undef _
+
+}  // namespace mozilla