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89 lines
2.9 KiB
89 lines
2.9 KiB
//======================================================================== |
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// GLFW - An OpenGL framework |
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// Platform: X11/GLX |
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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) 2002-2006 Marcus Geelnard |
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// Copyright (c) 2006-2010 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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//======================================================================== |
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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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struct timeval tv; |
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// "Resolution" is 1 us |
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_glfwLibrary.Timer.resolution = 1e-6; |
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// Set start-time for timer |
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gettimeofday( &tv, NULL ); |
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_glfwLibrary.Timer.t0 = (long long) tv.tv_sec * (long long) 1000000 + |
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(long long) tv.tv_usec; |
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} |
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//************************************************************************ |
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//**** Platform implementation functions **** |
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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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long long t; |
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struct timeval tv; |
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gettimeofday( &tv, NULL ); |
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t = (long long) tv.tv_sec * (long long) 1000000 + |
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(long long) tv.tv_usec; |
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return (double)(t - _glfwLibrary.Timer.t0) * _glfwLibrary.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 t ) |
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{ |
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long long t0; |
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struct timeval tv; |
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gettimeofday( &tv, NULL ); |
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t0 = (long long) tv.tv_sec * (long long) 1000000 + |
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(long long) tv.tv_usec; |
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// Calulate new starting time |
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_glfwLibrary.Timer.t0 = t0 - (long long)(t/_glfwLibrary.Timer.resolution); |
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} |
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