60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* Copyright (C) 2006-2010 - Frictional Games
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*
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* This file is part of HPL1 Engine.
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*/
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#ifndef HPL_OCCLUSION_QUERY_H
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#define HPL_OCCLUSION_QUERY_H
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namespace hpl {
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class iOcclusionQuery {
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public:
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virtual ~iOcclusionQuery() {}
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/**
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* Starts the query. Must be followed by an End().
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*/
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virtual void Begin() = 0;
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/**
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* Ends the current query. Must have been started with a Begin()
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*/
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virtual void End() = 0;
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/**
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* Fetches the result of he query. Should not be done until all is rendered. (Is called internally by Renderer3D)
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*/
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virtual bool FetchResults() = 0;
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/**
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* Get the number of samples that passed stencil and depth test in the query begin/end.
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*/
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virtual unsigned int GetSampleCount() = 0;
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};
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} // namespace hpl
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#endif // HPL_OCCLUSION_QUERY_H
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