The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/angle/src/libGLESv2/renderer/Query11.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,122 @@
     1.4 +#include "precompiled.h"
     1.5 +//
     1.6 +// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
     1.7 +// Use of this source code is governed by a BSD-style license that can be
     1.8 +// found in the LICENSE file.
     1.9 +//
    1.10 +
    1.11 +// Query11.cpp: Defines the rx::Query11 class which implements rx::QueryImpl.
    1.12 +
    1.13 +#include "libGLESv2/renderer/Query11.h"
    1.14 +#include "libGLESv2/renderer/Renderer11.h"
    1.15 +#include "libGLESv2/main.h"
    1.16 +
    1.17 +namespace rx
    1.18 +{
    1.19 +
    1.20 +Query11::Query11(rx::Renderer11 *renderer, GLenum type) : QueryImpl(type)
    1.21 +{
    1.22 +    mRenderer = renderer;
    1.23 +    mQuery = NULL;
    1.24 +}
    1.25 +
    1.26 +Query11::~Query11()
    1.27 +{
    1.28 +    if (mQuery)
    1.29 +    {
    1.30 +        mQuery->Release();
    1.31 +        mQuery = NULL;
    1.32 +    }
    1.33 +}
    1.34 +
    1.35 +void Query11::begin()
    1.36 +{
    1.37 +    if (mQuery == NULL)
    1.38 +    {
    1.39 +        D3D11_QUERY_DESC queryDesc;
    1.40 +        queryDesc.Query = D3D11_QUERY_OCCLUSION;
    1.41 +        queryDesc.MiscFlags = 0;
    1.42 +
    1.43 +        if (FAILED(mRenderer->getDevice()->CreateQuery(&queryDesc, &mQuery)))
    1.44 +        {
    1.45 +            return gl::error(GL_OUT_OF_MEMORY);
    1.46 +        }
    1.47 +    }
    1.48 +
    1.49 +    mRenderer->getDeviceContext()->Begin(mQuery);
    1.50 +}
    1.51 +
    1.52 +void Query11::end()
    1.53 +{
    1.54 +    if (mQuery == NULL)
    1.55 +    {
    1.56 +        return gl::error(GL_INVALID_OPERATION);
    1.57 +    }
    1.58 +
    1.59 +    mRenderer->getDeviceContext()->End(mQuery);
    1.60 +
    1.61 +    mStatus = GL_FALSE;
    1.62 +    mResult = GL_FALSE;
    1.63 +}
    1.64 +
    1.65 +GLuint Query11::getResult()
    1.66 +{
    1.67 +    if (mQuery != NULL)
    1.68 +    {
    1.69 +        while (!testQuery())
    1.70 +        {
    1.71 +            Sleep(0);
    1.72 +            // explicitly check for device loss, some drivers seem to return S_FALSE
    1.73 +            // if the device is lost
    1.74 +            if (mRenderer->testDeviceLost(true))
    1.75 +            {
    1.76 +                return gl::error(GL_OUT_OF_MEMORY, 0);
    1.77 +            }
    1.78 +        }
    1.79 +    }
    1.80 +
    1.81 +    return mResult;
    1.82 +}
    1.83 +
    1.84 +GLboolean Query11::isResultAvailable()
    1.85 +{
    1.86 +    if (mQuery != NULL)
    1.87 +    {
    1.88 +        testQuery();
    1.89 +    }
    1.90 +
    1.91 +    return mStatus;
    1.92 +}
    1.93 +
    1.94 +GLboolean Query11::testQuery()
    1.95 +{
    1.96 +    if (mQuery != NULL && mStatus != GL_TRUE)
    1.97 +    {
    1.98 +        UINT64 numPixels = 0;
    1.99 +        HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, &numPixels, sizeof(UINT64), 0);
   1.100 +        if (result == S_OK)
   1.101 +        {
   1.102 +            mStatus = GL_TRUE;
   1.103 +
   1.104 +            switch (getType())
   1.105 +            {
   1.106 +              case GL_ANY_SAMPLES_PASSED_EXT:
   1.107 +              case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
   1.108 +                mResult = (numPixels > 0) ? GL_TRUE : GL_FALSE;
   1.109 +                break;
   1.110 +              default:
   1.111 +                UNREACHABLE();
   1.112 +            }
   1.113 +        }
   1.114 +        else if (mRenderer->testDeviceLost(true))
   1.115 +        {
   1.116 +            return gl::error(GL_OUT_OF_MEMORY, GL_TRUE);
   1.117 +        }
   1.118 +
   1.119 +        return mStatus;
   1.120 +    }
   1.121 +
   1.122 +    return GL_TRUE; // prevent blocking when query is null
   1.123 +}
   1.124 +
   1.125 +}