glFrameAllocatorLockableHelper.h

Engine/source/gfx/gl/util/glFrameAllocatorLockableHelper.h

Classes:

class

Helper class for simulate lock/unlock on gfx buffers using FrameAllocator.

Detailed Description

 1
 2#ifndef GL_FRAMEALLOCATOR_LOCKABLE_HELPER_H
 3#define GL_FRAMEALLOCATOR_LOCKABLE_HELPER_H
 4
 5#include "core/frameAllocator.h"
 6
 7/// Helper class for simulate lock/unlock on gfx buffers using FrameAllocator
 8class FrameAllocatorLockableHelper
 9{
10public:
11   FrameAllocatorLockableHelper()
12      : mFrameAllocatorMark(0),
13      mFrameAllocatorPtr(NULL)
14#if TORQUE_DEBUG
15      , mFrameAllocatorMarkGuard(0)
16#endif
17   {
18
19   }
20
21   U8* lock(const U32 size)
22   {
23      AssertFatal(!mFrameAllocatorMark && !mFrameAllocatorPtr, "");
24      mFrameAllocatorMark = FrameAllocator::getWaterMark();
25      mFrameAllocatorPtr = (U8*)FrameAllocator::alloc( size );
26#if TORQUE_DEBUG
27      mFrameAllocatorMarkGuard = FrameAllocator::getWaterMark();
28#endif
29
30      return mFrameAllocatorPtr;
31   }
32
33   void unlock()
34   {
35#if TORQUE_DEBUG
36      AssertFatal(mFrameAllocatorMarkGuard == FrameAllocator::getWaterMark(), "");
37#endif
38      FrameAllocator::setWaterMark(mFrameAllocatorMark);
39      mFrameAllocatorMark = 0;
40      mFrameAllocatorPtr = NULL;
41   }
42
43   U8* getlockedPtr() const { return mFrameAllocatorPtr; }
44
45protected:
46   U32 mFrameAllocatorMark;
47   U8 *mFrameAllocatorPtr;
48
49#if TORQUE_DEBUG
50   U32 mFrameAllocatorMarkGuard;
51#endif
52};
53
54#endif //GL_FRAMEALLOCATOR_LOCKABLE_HELPER_H
55