dom/canvas/HostWebGLContext.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "HostWebGLContext.h"
   7
   8 #include "CompositableHost.h"
   9 #include "mozilla/layers/LayerTransactionChild.h"
  10 #include "mozilla/layers/LayersSurfaces.h"
  11
  12 #include "MozFramebuffer.h"
  13 #include "TexUnpackBlob.h"
  14 #include "WebGL2Context.h"
  15 #include "WebGLBuffer.h"
  16 #include "WebGLContext.h"
  17 #include "WebGLFramebuffer.h"
  18 #include "WebGLMemoryTracker.h"
  19 #include "WebGLParent.h"
  20 #include "WebGLProgram.h"
  21 #include "WebGLRenderbuffer.h"
  22 #include "WebGLSampler.h"
  23 #include "WebGLShader.h"
  24 #include "WebGLSync.h"
  25 #include "WebGLTexture.h"
  26 #include "WebGLTransformFeedback.h"
  27 #include "WebGLVertexArray.h"
  28 #include "WebGLQuery.h"
  29
  30 #include "mozilla/StaticMutex.h"
  31
  32 namespace mozilla {
  33
  34 // -
  35
  36 static StaticMutex sContextSetLock;
  37
  38 static std::unordered_set<HostWebGLContext*>& DeferredStaticContextSet() {
  39   static std::unordered_set<HostWebGLContext*> sContextSet;
  40   return sContextSet;
  41 }
  42
  43 LockedOutstandingContexts::LockedOutstandingContexts()
  44     : contexts(DeferredStaticContextSet()) {
  45   sContextSetLock.Lock();
  46 }
  47
  48 LockedOutstandingContexts::~LockedOutstandingContexts() {
  49   sContextSetLock.Unlock();
  50 }
  51
  52 // -
  53
  54 /*static*/
  55 UniquePtr<HostWebGLContext> HostWebGLContext::Create(
  56     const OwnerData& ownerData, const webgl::InitContextDesc& desc,
  57     webgl::InitContextResult* const out) {
  58   auto host = WrapUnique(new HostWebGLContext(ownerData));
  59   auto webgl = WebGLContext::Create(*host, desc, out);
  60   if (!webgl) return nullptr;
  61   return host;
  62 }
  63
  64 HostWebGLContext::HostWebGLContext(const OwnerData& ownerData)
  65     : mOwnerData(ownerData) {
  66   StaticMutexAutoLock lock(sContextSetLock);
  67   auto& contexts = DeferredStaticContextSet();
  68   (void)contexts.insert(this);
  69 }
  70
  71 HostWebGLContext::~HostWebGLContext() {
  72   StaticMutexAutoLock lock(sContextSetLock);
  73   auto& contexts = DeferredStaticContextSet();
  74   (void)contexts.erase(this);
  75 }
  76
  77 // -
  78
  79 void HostWebGLContext::OnContextLoss(const webgl::ContextLossReason reason) {
  80   if (mOwnerData.inProcess) {
  81     mOwnerData.inProcess->OnContextLoss(reason);
  82   } else {
  83     (void)mOwnerData.outOfProcess->SendOnContextLoss(reason);
  84   }
  85 }
  86
  87 void HostWebGLContext::JsWarning(const std::string& text) const {
  88   if (mOwnerData.inProcess) {
  89     mOwnerData.inProcess->JsWarning(text);
  90     return;
  91   }
  92   (void)mOwnerData.outOfProcess->SendJsWarning(text);
  93 }
  94
  95 Maybe<layers::SurfaceDescriptor> HostWebGLContext::GetFrontBuffer(
  96     const ObjectId xrFb, const bool webvr) const {
  97   return mContext->GetFrontBuffer(AutoResolve(xrFb), webvr);
  98 }
  99
 100 //////////////////////////////////////////////
 101 // Creation
 102
 103 void HostWebGLContext::CreateBuffer(const ObjectId id) {
 104   auto& slot = mBufferMap[id];
 105   if (slot) {
 106     MOZ_ASSERT(false, "duplicate ID");
 107     return;
 108   }
 109   slot = mContext->CreateBuffer();
 110 }
 111
 112 void HostWebGLContext::CreateFramebuffer(const ObjectId id) {
 113   auto& slot = mFramebufferMap[id];
 114   if (slot) {
 115     MOZ_ASSERT(false, "duplicate ID");
 116     return;
 117   }
 118   slot = mContext->CreateFramebuffer();
 119 }
 120
 121 bool HostWebGLContext::CreateOpaqueFramebuffer(
 122     const ObjectId id, const webgl::OpaqueFramebufferOptions& options) {
 123   auto& slot = mFramebufferMap[id];
 124   if (slot) {
 125     MOZ_ASSERT(false, "duplicate ID");
 126     return false;
 127   }
 128   slot = mContext->CreateOpaqueFramebuffer(options);
 129   return slot;
 130 }
 131
 132 void HostWebGLContext::CreateProgram(const ObjectId id) {
 133   auto& slot = mProgramMap[id];
 134   if (slot) {
 135     MOZ_ASSERT(false, "duplicate ID");
 136     return;
 137   }
 138   slot = mContext->CreateProgram();
 139 }
 140
 141 void HostWebGLContext::CreateQuery(const ObjectId id) {
 142   auto& slot = mQueryMap[id];
 143   if (slot) {
 144     MOZ_ASSERT(false, "duplicate ID");
 145     return;
 146   }
 147   slot = mContext->CreateQuery();
 148 }
 149
 150 void HostWebGLContext::CreateRenderbuffer(const ObjectId id) {
 151   auto& slot = mRenderbufferMap[id];
 152   if (slot) {
 153     MOZ_ASSERT(false, "duplicate ID");
 154     return;
 155   }
 156   slot = mContext->CreateRenderbuffer();
 157 }
 158
 159 void HostWebGLContext::CreateSampler(const ObjectId id) {
 160   auto& slot = mSamplerMap[id];
 161   if (slot) {
 162     MOZ_ASSERT(false, "duplicate ID");
 163     return;
 164   }
 165   slot = GetWebGL2Context()->CreateSampler();
 166 }
 167
 168 void HostWebGLContext::CreateShader(const ObjectId id, GLenum type) {
 169   auto& slot = mShaderMap[id];
 170   if (slot) {
 171     MOZ_ASSERT(false, "duplicate ID");
 172     return;
 173   }
 174   slot = mContext->CreateShader(type);
 175 }
 176
 177 void HostWebGLContext::CreateSync(const ObjectId id) {
 178   auto& slot = mSyncMap[id];
 179   if (slot) {
 180     MOZ_ASSERT(false, "duplicate ID");
 181     return;
 182   }
 183   slot = GetWebGL2Context()->FenceSync(LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
 184 }
 185
 186 void HostWebGLContext::CreateTexture(const ObjectId id) {
 187   auto& slot = mTextureMap[id];
 188   if (slot) {
 189     MOZ_ASSERT(false, "duplicate ID");
 190     return;
 191   }
 192   slot = mContext->CreateTexture();
 193 }
 194
 195 void HostWebGLContext::CreateTransformFeedback(const ObjectId id) {
 196   auto& slot = mTransformFeedbackMap[id];
 197   if (slot) {
 198     MOZ_ASSERT(false, "duplicate ID");
 199     return;
 200   }
 201   slot = GetWebGL2Context()->CreateTransformFeedback();
 202 }
 203
 204 void HostWebGLContext::CreateVertexArray(const ObjectId id) {
 205   auto& slot = mVertexArrayMap[id];
 206   if (slot) {
 207     MOZ_ASSERT(false, "duplicate ID");
 208     return;
 209   }
 210   slot = mContext->CreateVertexArray();
 211 }
 212
 213 ////////////////////////
 214
 215 #define _(X) \
 216   void HostWebGLContext::Delete##X(const ObjectId id) { m##X##Map.erase(id); }
 217
 218 _(Buffer)
 219 _(Framebuffer)
 220 _(Program)
 221 _(Query)
 222 _(Renderbuffer)
 223 _(Sampler)
 224 _(Shader)
 225 _(Sync)
 226 _(Texture)
 227 _(TransformFeedback)
 228 _(VertexArray)
 229
 230 #undef _
 231
 232 }  // namespace mozilla