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#include "precompiled.h"
//
// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Fence11.cpp: Defines the rx::Fence11 class which implements rx::FenceImpl.
#include "libGLESv2/renderer/Fence11.h"
#include "libGLESv2/main.h"
#include "libGLESv2/renderer/Renderer11.h"
namespace rx
{
Fence11::Fence11(rx::Renderer11 *renderer)
{
mRenderer = renderer;
mQuery = NULL;
}
Fence11::~Fence11()
{
if (mQuery)
{
mQuery->Release();
mQuery = NULL;
}
}
GLboolean Fence11::isFence()
{
// GL_NV_fence spec:
// A name returned by GenFencesNV, but not yet set via SetFenceNV, is not the name of an existing fence.
return mQuery != NULL;
}
void Fence11::setFence(GLenum condition)
{
if (!mQuery)
{
D3D11_QUERY_DESC queryDesc;
queryDesc.Query = D3D11_QUERY_EVENT;
queryDesc.MiscFlags = 0;
if (FAILED(mRenderer->getDevice()->CreateQuery(&queryDesc, &mQuery)))
{
return gl::error(GL_OUT_OF_MEMORY);
}
}
mRenderer->getDeviceContext()->End(mQuery);
setCondition(condition);
setStatus(GL_FALSE);
}
GLboolean Fence11::testFence()
{
if (mQuery == NULL)
{
return gl::error(GL_INVALID_OPERATION, GL_TRUE);
}
HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, NULL, 0, 0);
if (mRenderer->isDeviceLost())
{
return gl::error(GL_OUT_OF_MEMORY, GL_TRUE);
}
ASSERT(result == S_OK || result == S_FALSE);
setStatus(result == S_OK);
return getStatus();
}
void Fence11::finishFence()
{
if (mQuery == NULL)
{
return gl::error(GL_INVALID_OPERATION);
}
while (!testFence())
{
Sleep(0);
}
}
void Fence11::getFenceiv(GLenum pname, GLint *params)
{
if (mQuery == NULL)
{
return gl::error(GL_INVALID_OPERATION);
}
switch (pname)
{
case GL_FENCE_STATUS_NV:
{
// GL_NV_fence spec:
// Once the status of a fence has been finished (via FinishFenceNV) or tested and the returned status is TRUE (via either TestFenceNV
// or GetFenceivNV querying the FENCE_STATUS_NV), the status remains TRUE until the next SetFenceNV of the fence.
if (getStatus())
{
params[0] = GL_TRUE;
return;
}
HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, NULL, 0, D3D11_ASYNC_GETDATA_DONOTFLUSH);
if (mRenderer->isDeviceLost())
{
params[0] = GL_TRUE;
return gl::error(GL_OUT_OF_MEMORY);
}
ASSERT(result == S_OK || result == S_FALSE);
setStatus(result == S_OK);
params[0] = getStatus();
break;
}
case GL_FENCE_CONDITION_NV:
params[0] = getCondition();
break;
default:
return gl::error(GL_INVALID_ENUM);
break;
}
}
}
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