| 1 | //======================================================================== |
| 2 | // GLFW 3.3 Win32 - www.glfw.org |
| 3 | //------------------------------------------------------------------------ |
| 4 | // Copyright (c) 2002-2006 Marcus Geelnard |
| 5 | // Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org> |
| 6 | // |
| 7 | // This software is provided 'as-is', without any express or implied |
| 8 | // warranty. In no event will the authors be held liable for any damages |
| 9 | // arising from the use of this software. |
| 10 | // |
| 11 | // Permission is granted to anyone to use this software for any purpose, |
| 12 | // including commercial applications, and to alter it and redistribute it |
| 13 | // freely, subject to the following restrictions: |
| 14 | // |
| 15 | // 1. The origin of this software must not be misrepresented; you must not |
| 16 | // claim that you wrote the original software. If you use this software |
| 17 | // in a product, an acknowledgment in the product documentation would |
| 18 | // be appreciated but is not required. |
| 19 | // |
| 20 | // 2. Altered source versions must be plainly marked as such, and must not |
| 21 | // be misrepresented as being the original software. |
| 22 | // |
| 23 | // 3. This notice may not be removed or altered from any source |
| 24 | // distribution. |
| 25 | // |
| 26 | //======================================================================== |
| 27 | // Please use C89 style variable declarations in this file because VS 2010 |
| 28 | //======================================================================== |
| 29 | |
| 30 | #include "internal.h" |
| 31 | |
| 32 | |
| 33 | ////////////////////////////////////////////////////////////////////////// |
| 34 | ////// GLFW internal API ////// |
| 35 | ////////////////////////////////////////////////////////////////////////// |
| 36 | |
| 37 | // Initialise timer |
| 38 | // |
| 39 | void _glfwInitTimerWin32(void) |
| 40 | { |
| 41 | uint64_t frequency; |
| 42 | |
| 43 | if (QueryPerformanceFrequency((LARGE_INTEGER*) &frequency)) |
| 44 | { |
| 45 | _glfw.timer.win32.hasPC = GLFW_TRUE; |
| 46 | _glfw.timer.win32.frequency = frequency; |
| 47 | } |
| 48 | else |
| 49 | { |
| 50 | _glfw.timer.win32.hasPC = GLFW_FALSE; |
| 51 | _glfw.timer.win32.frequency = 1000; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | |
| 56 | ////////////////////////////////////////////////////////////////////////// |
| 57 | ////// GLFW platform API ////// |
| 58 | ////////////////////////////////////////////////////////////////////////// |
| 59 | |
| 60 | uint64_t _glfwPlatformGetTimerValue(void) |
| 61 | { |
| 62 | if (_glfw.timer.win32.hasPC) |
| 63 | { |
| 64 | uint64_t value; |
| 65 | QueryPerformanceCounter((LARGE_INTEGER*) &value); |
| 66 | return value; |
| 67 | } |
| 68 | else |
| 69 | return (uint64_t) timeGetTime(); |
| 70 | } |
| 71 | |
| 72 | uint64_t _glfwPlatformGetTimerFrequency(void) |
| 73 | { |
| 74 | return _glfw.timer.win32.frequency; |
| 75 | } |
| 76 |