1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4 (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
11 in the Software without restriction, including without limitation the rights
12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 copies of the Software, and to permit persons to whom the Software is
14 furnished to do so, subject to the following conditions:
15 
16 The above copyright notice and this permission notice shall be included in
17 all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 THE SOFTWARE.
26 -----------------------------------------------------------------------------
27 */
28 #include "OgreStableHeaders.h"
29 #include "OgreDepthBuffer.h"
30 #include "OgreRenderTarget.h"
31 
32 namespace Ogre
33 {
DepthBuffer(uint16 poolId,uint16 bitDepth,uint32 width,uint32 height,uint32 fsaa,const String & fsaaHint,bool manual)34 	DepthBuffer::DepthBuffer( uint16 poolId, uint16 bitDepth, uint32 width, uint32 height,
35 							  uint32 fsaa, const String &fsaaHint, bool manual ) :
36 				mPoolId(poolId),
37 				mBitDepth(bitDepth),
38 				mWidth(width),
39 				mHeight(height),
40 				mFsaa(fsaa),
41 				mFsaaHint(fsaaHint),
42 				mManual(manual)
43 	{
44 	}
45 
~DepthBuffer()46 	DepthBuffer::~DepthBuffer()
47 	{
48 		detachFromAllRenderTargets();
49 	}
50 
_setPoolId(uint16 poolId)51 	void DepthBuffer::_setPoolId( uint16 poolId )
52 	{
53 		//Change the pool Id
54 		mPoolId = poolId;
55 
56 		//Render Targets were attached to us, but they have a different pool Id,
57 		//so detach ourselves from them
58 		detachFromAllRenderTargets();
59 	}
60 	//-----------------------------------------------------------------------
getPoolId() const61 	uint16 DepthBuffer::getPoolId() const
62 	{
63 		return mPoolId;
64 	}
65 	//-----------------------------------------------------------------------
getBitDepth() const66 	uint16 DepthBuffer::getBitDepth() const
67 	{
68 		return mBitDepth;
69 	}
70 	//-----------------------------------------------------------------------
getWidth() const71 	uint32 DepthBuffer::getWidth() const
72 	{
73 		return mWidth;
74 	}
75 	//----------------------------------------------------------------------
getHeight() const76 	uint32 DepthBuffer::getHeight() const
77 	{
78 		return mHeight;
79 	}
80 	//-----------------------------------------------------------------------
getFsaa() const81 	uint32 DepthBuffer::getFsaa() const
82 	{
83 		return mFsaa;
84 	}
85 	//-----------------------------------------------------------------------
getFsaaHint() const86 	const String& DepthBuffer::getFsaaHint() const
87 	{
88 		return mFsaaHint;
89 	}
90 	//-----------------------------------------------------------------------
isManual() const91 	bool DepthBuffer::isManual() const
92 	{
93 		return mManual;
94 	}
95 	//-----------------------------------------------------------------------
isCompatible(RenderTarget * renderTarget) const96 	bool DepthBuffer::isCompatible( RenderTarget *renderTarget ) const
97 	{
98 		if( this->getWidth() >= renderTarget->getWidth() &&
99 			this->getHeight() >= renderTarget->getHeight() &&
100 			this->getFsaa() == renderTarget->getFSAA() )
101 		{
102 			return true;
103 		}
104 
105 		return false;
106 	}
107 	//-----------------------------------------------------------------------
_notifyRenderTargetAttached(RenderTarget * renderTarget)108 	void DepthBuffer::_notifyRenderTargetAttached( RenderTarget *renderTarget )
109 	{
110 		assert( mAttachedRenderTargets.find( renderTarget ) == mAttachedRenderTargets.end() );
111 
112 		mAttachedRenderTargets.insert( renderTarget );
113 	}
114 	//-----------------------------------------------------------------------
_notifyRenderTargetDetached(RenderTarget * renderTarget)115 	void DepthBuffer::_notifyRenderTargetDetached( RenderTarget *renderTarget )
116 	{
117 		RenderTargetSet::iterator itor = mAttachedRenderTargets.find( renderTarget );
118 		assert( itor != mAttachedRenderTargets.end() );
119 
120 		mAttachedRenderTargets.erase( itor );
121 	}
122 	//-----------------------------------------------------------------------
detachFromAllRenderTargets()123 	void DepthBuffer::detachFromAllRenderTargets()
124 	{
125 		RenderTargetSet::const_iterator itor = mAttachedRenderTargets.begin();
126 		RenderTargetSet::const_iterator end  = mAttachedRenderTargets.end();
127 		while( itor != end )
128 		{
129 			//If we call, detachDepthBuffer, we'll invalidate the iterators
130 			(*itor)->_detachDepthBuffer();
131 			++itor;
132 		}
133 
134 		mAttachedRenderTargets.clear();
135 	}
136 }
137