1 files changed, 122 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/renderer/Query11.cpp b/src/3rdparty/angle/src/libGLESv2/renderer/Query11.cpp
new file mode 100644
index 0000000000..13210fc929
--- /dev/null
+++ b/src/3rdparty/angle/src/libGLESv2/renderer/Query11.cpp
@@ -0,0 +1,122 @@
+#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
+}
+
+}