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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.
//
// Query11.cpp: Defines the rx::Query11 class which implements rx::QueryImpl.
#include "libGLESv2/renderer/Query11.h"
#include "libGLESv2/renderer/Renderer11.h"
#include "libGLESv2/main.h"
namespace rx
{
Query11::Query11(rx::Renderer11 *renderer, GLenum type) : QueryImpl(type)
{
mRenderer = renderer;
mQuery = NULL;
}
Query11::~Query11()
{
if (mQuery)
{
mQuery->Release();
mQuery = NULL;
}
}
void Query11::begin()
{
if (mQuery == NULL)
{
D3D11_QUERY_DESC queryDesc;
queryDesc.Query = D3D11_QUERY_OCCLUSION;
queryDesc.MiscFlags = 0;
if (FAILED(mRenderer->getDevice()->CreateQuery(&queryDesc, &mQuery)))
{
return gl::error(GL_OUT_OF_MEMORY);
}
}
mRenderer->getDeviceContext()->Begin(mQuery);
}
void Query11::end()
{
if (mQuery == NULL)
{
return gl::error(GL_INVALID_OPERATION);
}
mRenderer->getDeviceContext()->End(mQuery);
mStatus = GL_FALSE;
mResult = GL_FALSE;
}
GLuint Query11::getResult()
{
if (mQuery != NULL)
{
while (!testQuery())
{
Sleep(0);
// explicitly check for device loss, some drivers seem to return S_FALSE
// if the device is lost
if (mRenderer->testDeviceLost(true))
{
return gl::error(GL_OUT_OF_MEMORY, 0);
}
}
}
return mResult;
}
GLboolean Query11::isResultAvailable()
{
if (mQuery != NULL)
{
testQuery();
}
return mStatus;
}
GLboolean Query11::testQuery()
{
if (mQuery != NULL && mStatus != GL_TRUE)
{
UINT64 numPixels = 0;
HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, &numPixels, sizeof(UINT64), 0);
if (result == S_OK)
{
mStatus = GL_TRUE;
switch (getType())
{
case GL_ANY_SAMPLES_PASSED_EXT:
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
mResult = (numPixels > 0) ? GL_TRUE : GL_FALSE;
break;
default:
UNREACHABLE();
}
}
else if (mRenderer->testDeviceLost(true))
{
return gl::error(GL_OUT_OF_MEMORY, GL_TRUE);
}
return mStatus;
}
return GL_TRUE; // prevent blocking when query is null
}
}
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