gfxGLAppleFence.cpp

Engine/source/gfx/gl/gfxGLAppleFence.cpp

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Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#include "gfx/gl/gfxGLAppleFence.h"
25
26GFXGLAppleFence::GFXGLAppleFence(GFXDevice* device) : GFXFence(device), mIssued(false)
27{
28   glGenFencesAPPLE(1, &mHandle);
29}
30
31GFXGLAppleFence::~GFXGLAppleFence()
32{
33   glDeleteFencesAPPLE(1, &mHandle);
34}
35
36void GFXGLAppleFence::issue()
37{
38   glSetFenceAPPLE(mHandle);
39   mIssued = true;
40}
41
42GFXFence::FenceStatus GFXGLAppleFence::getStatus() const
43{
44   if(!mIssued)
45      return GFXFence::Unset;
46      
47   GLboolean res = glTestFenceAPPLE(mHandle);
48   return res ? GFXFence::Processed : GFXFence::Pending;
49}
50
51void GFXGLAppleFence::block()
52{
53   if(!mIssued)
54      return;
55      
56   glFinishFenceAPPLE(mHandle);
57}
58
59void GFXGLAppleFence::zombify()
60{
61   glDeleteFencesAPPLE(1, &mHandle);
62}
63
64void GFXGLAppleFence::resurrect()
65{
66   glGenFencesAPPLE(1, &mHandle);
67}
68
69const String GFXGLAppleFence::describeSelf() const
70{
71   return String::ToString("   GL Handle: %i", mHandle);
72}
73