gecko-dev/gfx/2d/DrawingJob.cpp

121 lines
2.6 KiB
C++

/* -*- 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 "DrawingJob.h"
#include "JobScheduler.h"
#include "mozilla/gfx/2D.h"
namespace mozilla {
namespace gfx {
DrawingJobBuilder::DrawingJobBuilder()
{}
DrawingJobBuilder::~DrawingJobBuilder()
{
MOZ_ASSERT(!mDrawTarget);
}
void
DrawingJob::Clear()
{
mCommandBuffer = nullptr;
mCursor = 0;
}
void
DrawingJobBuilder::BeginDrawingJob(DrawTarget* aTarget, IntPoint aOffset,
SyncObject* aStart)
{
MOZ_ASSERT(mCommandOffsets.empty());
MOZ_ASSERT(aTarget);
mDrawTarget = aTarget;
mOffset = aOffset;
mStart = aStart;
}
DrawingJob*
DrawingJobBuilder::EndDrawingJob(CommandBuffer* aCmdBuffer,
SyncObject* aCompletion,
WorkerThread* aPinToWorker)
{
MOZ_ASSERT(mDrawTarget);
DrawingJob* task = new DrawingJob(mDrawTarget, mOffset, mStart, aCompletion, aPinToWorker);
task->mCommandBuffer = aCmdBuffer;
task->mCommandOffsets = Move(mCommandOffsets);
mDrawTarget = nullptr;
mOffset = IntPoint();
mStart = nullptr;
return task;
}
DrawingJob::DrawingJob(DrawTarget* aTarget, IntPoint aOffset,
SyncObject* aStart, SyncObject* aCompletion,
WorkerThread* aPinToWorker)
: Job(aStart, aCompletion, aPinToWorker)
, mCommandBuffer(nullptr)
, mCursor(0)
, mDrawTarget(aTarget)
, mOffset(aOffset)
{
mCommandOffsets.reserve(64);
}
JobStatus
DrawingJob::Run()
{
while (mCursor < mCommandOffsets.size()) {
const DrawingCommand* cmd = mCommandBuffer->GetDrawingCommand(mCommandOffsets[mCursor]);
if (!cmd) {
return JobStatus::Error;
}
cmd->ExecuteOnDT(mDrawTarget);
++mCursor;
}
return JobStatus::Complete;
}
DrawingJob::~DrawingJob()
{
Clear();
}
const DrawingCommand*
CommandBuffer::GetDrawingCommand(ptrdiff_t aId)
{
return static_cast<DrawingCommand*>(mStorage.GetStorage(aId));
}
CommandBuffer::~CommandBuffer()
{
mStorage.ForEach([](void* item){
static_cast<DrawingCommand*>(item)->~DrawingCommand();
});
mStorage.Clear();
}
void
CommandBufferBuilder::BeginCommandBuffer(size_t aBufferSize)
{
MOZ_ASSERT(!mCommands);
mCommands = new CommandBuffer(aBufferSize);
}
already_AddRefed<CommandBuffer>
CommandBufferBuilder::EndCommandBuffer()
{
return mCommands.forget();
}
} // namespace
} // namespace