diff options
Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/Query.cpp')
-rw-r--r-- | src/3rdparty/angle/src/libGLESv2/Query.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/Query.cpp b/src/3rdparty/angle/src/libGLESv2/Query.cpp new file mode 100644 index 0000000000..10edda5c57 --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/Query.cpp @@ -0,0 +1,128 @@ +// +// Copyright (c) 2012 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. +// + +// Query.cpp: Implements the gl::Query class + +#include "libGLESv2/Query.h" + +#include "libGLESv2/main.h" + +namespace gl +{ + +Query::Query(GLuint id, GLenum type) : RefCountObject(id) +{ + mQuery = NULL; + mStatus = GL_FALSE; + mResult = GL_FALSE; + mType = type; +} + +Query::~Query() +{ + if (mQuery != NULL) + { + mQuery->Release(); + mQuery = NULL; + } +} + +void Query::begin() +{ + if (mQuery == NULL) + { + if (FAILED(getDevice()->CreateQuery(D3DQUERYTYPE_OCCLUSION, &mQuery))) + { + return error(GL_OUT_OF_MEMORY); + } + } + + HRESULT result = mQuery->Issue(D3DISSUE_BEGIN); + ASSERT(SUCCEEDED(result)); +} + +void Query::end() +{ + if (mQuery == NULL) + { + return error(GL_INVALID_OPERATION); + } + + HRESULT result = mQuery->Issue(D3DISSUE_END); + ASSERT(SUCCEEDED(result)); + + mStatus = GL_FALSE; + mResult = GL_FALSE; +} + +GLuint Query::getResult() +{ + if (mQuery != NULL) + { + while (!testQuery()) + { + Sleep(0); + // explicitly check for device loss + // some drivers seem to return S_FALSE even if the device is lost + // instead of D3DERR_DEVICELOST like they should + if (gl::getDisplay()->testDeviceLost()) + { + gl::getDisplay()->notifyDeviceLost(); + return error(GL_OUT_OF_MEMORY, 0); + } + } + } + + return (GLuint)mResult; +} + +GLboolean Query::isResultAvailable() +{ + if (mQuery != NULL) + { + testQuery(); + } + + return mStatus; +} + +GLenum Query::getType() const +{ + return mType; +} + +GLboolean Query::testQuery() +{ + if (mQuery != NULL && mStatus != GL_TRUE) + { + DWORD numPixels = 0; + + HRESULT hres = mQuery->GetData(&numPixels, sizeof(DWORD), D3DGETDATA_FLUSH); + if (hres == S_OK) + { + mStatus = GL_TRUE; + + switch (mType) + { + case GL_ANY_SAMPLES_PASSED_EXT: + case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT: + mResult = (numPixels > 0) ? GL_TRUE : GL_FALSE; + break; + default: + ASSERT(false); + } + } + else if (checkDeviceLost(hres)) + { + return error(GL_OUT_OF_MEMORY, GL_TRUE); + } + + return mStatus; + } + + return GL_TRUE; // prevent blocking when query is null +} +} |