Initial import of 2.7 Lite.

2026-09-22 16:52:57 +00:00 · 2010-09-07 17:34:51 +02:00
parent efef33c791
commit 3249f812d6
97 changed files with 25983 additions and 0 deletions
@@ -0,0 +1,118 @@
+//========================================================================
+// GLFW - An OpenGL framework
+// Platform:    Win32/WGL
+// API version: 2.7
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+
+//************************************************************************
+//****                  GLFW internal functions                       ****
+//************************************************************************
+
+//========================================================================
+// _glfwInitTimer() - Initialise timer
+//========================================================================
+
+void _glfwInitTimer( void )
+{
+    __int64 freq;
+
+    // Check if we have a performance counter
+    if( QueryPerformanceFrequency( (LARGE_INTEGER *)&freq ) )
+    {
+        // Performance counter is available => use it!
+        _glfwLibrary.Timer.HasPerformanceCounter = GL_TRUE;
+
+        // Counter resolution is 1 / counter frequency
+        _glfwLibrary.Timer.Resolution = 1.0 / (double)freq;
+
+        // Set start time for timer
+        QueryPerformanceCounter( (LARGE_INTEGER *)&_glfwLibrary.Timer.t0_64 );
+    }
+    else
+    {
+        // No performace counter available => use the tick counter
+        _glfwLibrary.Timer.HasPerformanceCounter = GL_FALSE;
+
+        // Counter resolution is 1 ms
+        _glfwLibrary.Timer.Resolution = 0.001;
+
+        // Set start time for timer
+        _glfwLibrary.Timer.t0_32 = _glfw_timeGetTime();
+    }
+}
+
+
+//************************************************************************
+//****               Platform implementation functions                ****
+//************************************************************************
+
+//========================================================================
+// Return timer value in seconds
+//========================================================================
+
+double _glfwPlatformGetTime( void )
+{
+    double  t;
+    __int64 t_64;
+
+    if( _glfwLibrary.Timer.HasPerformanceCounter )
+    {
+        QueryPerformanceCounter( (LARGE_INTEGER *)&t_64 );
+        t =  (double)(t_64 - _glfwLibrary.Timer.t0_64);
+    }
+    else
+    {
+        t = (double)(_glfw_timeGetTime() - _glfwLibrary.Timer.t0_32);
+    }
+
+    // Calculate the current time in seconds
+    return t * _glfwLibrary.Timer.Resolution;
+}
+
+
+//========================================================================
+// Set timer value in seconds
+//========================================================================
+
+void _glfwPlatformSetTime( double t )
+{
+    __int64 t_64;
+
+    if( _glfwLibrary.Timer.HasPerformanceCounter )
+    {
+        QueryPerformanceCounter( (LARGE_INTEGER *)&t_64 );
+        _glfwLibrary.Timer.t0_64 = t_64 - (__int64)(t/_glfwLibrary.Timer.Resolution);
+    }
+    else
+    {
+        _glfwLibrary.Timer.t0_32 = _glfw_timeGetTime() - (int)(t*1000.0);
+    }
+}
+