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