diff options
Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/Fence.cpp')
-rw-r--r-- | src/3rdparty/angle/src/libGLESv2/Fence.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/Fence.cpp b/src/3rdparty/angle/src/libGLESv2/Fence.cpp new file mode 100644 index 0000000000..14d1239abf --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/Fence.cpp @@ -0,0 +1,132 @@ +// +// Copyright (c) 2002-2010 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. +// + +// Fence.cpp: Implements the gl::Fence class, which supports the GL_NV_fence extension. + +#include "libGLESv2/Fence.h" + +#include "libGLESv2/main.h" + +namespace gl +{ + +Fence::Fence(egl::Display* display) +{ + mDisplay = display; + mQuery = NULL; + mCondition = GL_NONE; + mStatus = GL_FALSE; +} + +Fence::~Fence() +{ + if (mQuery != NULL) + { + mDisplay->freeEventQuery(mQuery); + } +} + +GLboolean Fence::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 Fence::setFence(GLenum condition) +{ + if (!mQuery) + { + mQuery = mDisplay->allocateEventQuery(); + if (!mQuery) + { + return error(GL_OUT_OF_MEMORY); + } + } + + HRESULT result = mQuery->Issue(D3DISSUE_END); + ASSERT(SUCCEEDED(result)); + + mCondition = condition; + mStatus = GL_FALSE; +} + +GLboolean Fence::testFence() +{ + if (mQuery == NULL) + { + return error(GL_INVALID_OPERATION, GL_TRUE); + } + + HRESULT result = mQuery->GetData(NULL, 0, D3DGETDATA_FLUSH); + + if (checkDeviceLost(result)) + { + return error(GL_OUT_OF_MEMORY, GL_TRUE); + } + + ASSERT(result == S_OK || result == S_FALSE); + mStatus = result == S_OK; + return mStatus; +} + +void Fence::finishFence() +{ + if (mQuery == NULL) + { + return error(GL_INVALID_OPERATION); + } + + while (!testFence()) + { + Sleep(0); + } +} + +void Fence::getFenceiv(GLenum pname, GLint *params) +{ + if (mQuery == NULL) + { + return 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 (mStatus) + { + params[0] = GL_TRUE; + return; + } + + HRESULT result = mQuery->GetData(NULL, 0, 0); + + if (checkDeviceLost(result)) + { + params[0] = GL_TRUE; + return error(GL_OUT_OF_MEMORY); + } + + ASSERT(result == S_OK || result == S_FALSE); + mStatus = result == S_OK; + params[0] = mStatus; + + break; + } + case GL_FENCE_CONDITION_NV: + params[0] = mCondition; + break; + default: + return error(GL_INVALID_ENUM); + break; + } +} + +} |