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87 lines
3.0 KiB
87 lines
3.0 KiB
//======================================================================== |
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// GLFW - An OpenGL library |
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// Platform: Cocoa |
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// API Version: 3.0 |
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// WWW: http://www.glfw.org/ |
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//------------------------------------------------------------------------ |
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// Copyright (c) 2009-2010 Camilla Berglund <elmindreda@elmindreda.org> |
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// |
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// This software is provided 'as-is', without any express or implied |
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// warranty. In no event will the authors be held liable for any damages |
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// arising from the use of this software. |
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// |
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// Permission is granted to anyone to use this software for any purpose, |
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// including commercial applications, and to alter it and redistribute it |
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// freely, subject to the following restrictions: |
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// |
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// 1. The origin of this software must not be misrepresented; you must not |
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// claim that you wrote the original software. If you use this software |
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// in a product, an acknowledgment in the product documentation would |
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// be appreciated but is not required. |
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// |
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// 2. Altered source versions must be plainly marked as such, and must not |
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// be misrepresented as being the original software. |
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// |
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// 3. This notice may not be removed or altered from any source |
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// distribution. |
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// |
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//======================================================================== |
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#include "internal.h" |
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#include <mach/mach_time.h> |
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//======================================================================== |
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// Return raw time |
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//======================================================================== |
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static uint64_t getRawTime(void) |
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{ |
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return mach_absolute_time(); |
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} |
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////////////////////////////////////////////////////////////////////////// |
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////// GLFW internal API ////// |
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////////////////////////////////////////////////////////////////////////// |
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//======================================================================== |
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// Initialise timer |
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//======================================================================== |
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void _glfwInitTimer(void) |
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{ |
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mach_timebase_info_data_t info; |
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mach_timebase_info(&info); |
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_glfwLibrary.NS.timer.resolution = (double) info.numer / (info.denom * 1.0e9); |
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_glfwLibrary.NS.timer.base = getRawTime(); |
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} |
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////////////////////////////////////////////////////////////////////////// |
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////// GLFW platform API ////// |
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////////////////////////////////////////////////////////////////////////// |
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//======================================================================== |
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// Return timer value in seconds |
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//======================================================================== |
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double _glfwPlatformGetTime(void) |
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{ |
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return (double) (getRawTime() - _glfwLibrary.NS.timer.base) * |
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_glfwLibrary.NS.timer.resolution; |
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} |
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//======================================================================== |
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// Set timer value in seconds |
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//======================================================================== |
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void _glfwPlatformSetTime(double time) |
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{ |
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_glfwLibrary.NS.timer.base = getRawTime() - |
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(uint64_t) (time / _glfwLibrary.NS.timer.resolution); |
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} |
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