Equalizer  1.10.1
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accum.h
1 
2 /* Copyright (c) 2009-2014, Stefan Eilemann <eile@equalizergraphics.com>
3  * 2009, Sarah Amsellem <sarah.amsellem@gmail.com>
4  *
5  * This library is free software; you can redistribute it and/or modify it under
6  * the terms of the GNU Lesser General Public License version 2.1 as published
7  * by the Free Software Foundation.
8  *
9  * This library is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11  * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12  * details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with this library; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 #ifndef EQUTIL_ACCUM_H
20 #define EQUTIL_ACCUM_H
21 
22 #include <eq/util/types.h>
23 
24 namespace eq
25 {
26 namespace util
27 {
28 namespace detail { class Accum; }
29 
39 class Accum
40 {
41 public:
43  EQ_API explicit Accum( const GLEWContext* const glewContext );
44 
46  EQ_API ~Accum();
47 
56  EQ_API bool init( const PixelViewport& pvp, unsigned textureFormat );
57 
59  EQ_API void exit();
60 
69  EQ_API bool resize( const PixelViewport& pvp );
70  EQ_API bool resize( const int width, const int height );
71 
73  EQ_API void clear();
74 
79  EQ_API void accum();
80 
85  EQ_API void display();
86 
93  EQ_API uint32_t getMaxSteps() const;
94 
101  EQ_API uint32_t getNumSteps() const;
102 
112  EQ_API void setTotalSteps( uint32_t totalSteps );
113 
115  EQ_API uint32_t getTotalSteps();
116 
123  EQ_API bool usesFBO() const;
124 
132  EQ_API static bool usesFBO( const GLEWContext* glewContext );
133 
134  EQ_API const GLEWContext* glewGetContext() const;
135 
136 private:
137  Accum( const Accum& ) = delete;
138  Accum& operator=( const Accum& ) = delete;
139  detail::Accum* const _impl;
140 };
141 }
142 }
143 
144 #endif // EQUTIL_ACCUM_H
EQ_API bool resize(const PixelViewport &pvp)
Resize the accumulation buffer.
EQ_API uint32_t getTotalSteps()
EQ_API bool init(const PixelViewport &pvp, unsigned textureFormat)
Initialize the accumulation buffer.
A C++ class to abstract an accumulation buffer.
Definition: accum.h:39
EQ_API void setTotalSteps(uint32_t totalSteps)
Set the total number of accumulation steps that will be done.
EQ_API ~Accum()
Destruct the accumulation buffer.
EQ_API bool usesFBO() const
Test if the accumulation uses the FBO implementation.
EQ_API uint32_t getMaxSteps() const
Get the maximum number of accumulation steps possible.
EQ_API void exit()
Exit the accum buffer.
EQ_API Accum(const GLEWContext *const glewContext)
Construct a new accumulation buffer.
EQ_API void display()
Copy the result of the accumulation to the current draw buffer.
EQ_API uint32_t getNumSteps() const
Get the current number of accumulation steps done.
EQ_API void clear()
Clear the accumulation buffer.
EQ_API void accum()
Accumulate a frame from the read buffer into the accumulation buffer.