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//======================================================================== |
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// GLFW 3.4 - www.glfw.org |
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//------------------------------------------------------------------------ |
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// Copyright (c) 2002-2006 Marcus Geelnard |
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// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.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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// Please use C89 style variable declarations in this file because VS 2010 |
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//======================================================================== |
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#include "internal.h" |
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#include <assert.h> |
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#include <math.h> |
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#include <float.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <limits.h> |
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40 |
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// Lexically compare video modes, used by qsort |
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// |
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static int compareVideoModes(const void* fp, const void* sp) |
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{ |
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const GLFWvidmode* fm = fp; |
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const GLFWvidmode* sm = sp; |
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const int fbpp = fm->redBits + fm->greenBits + fm->blueBits; |
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const int sbpp = sm->redBits + sm->greenBits + sm->blueBits; |
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const int farea = fm->width * fm->height; |
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const int sarea = sm->width * sm->height; |
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51 |
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// First sort on color bits per pixel |
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if (fbpp != sbpp) |
53 |
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return fbpp - sbpp; |
54 |
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55 |
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// Then sort on screen area |
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if (farea != sarea) |
57 |
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return farea - sarea; |
58 |
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59 |
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// Then sort on width |
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if (fm->width != sm->width) |
61 |
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return fm->width - sm->width; |
62 |
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// Lastly sort on refresh rate |
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return fm->refreshRate - sm->refreshRate; |
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} |
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// Retrieves the available modes for the specified monitor |
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// |
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static GLFWbool refreshVideoModes(_GLFWmonitor* monitor) |
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{ |
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int modeCount; |
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GLFWvidmode* modes; |
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if (monitor->modes) |
75 |
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return GLFW_TRUE; |
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modes = _glfw.platform.getVideoModes(monitor, &modeCount); |
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if (!modes) |
79 |
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return GLFW_FALSE; |
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qsort(modes, modeCount, sizeof(GLFWvidmode), compareVideoModes); |
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_glfw_free(monitor->modes); |
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monitor->modes = modes; |
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monitor->modeCount = modeCount; |
86 |
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return GLFW_TRUE; |
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} |
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////////////////////////////////////////////////////////////////////////// |
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////// GLFW event API ////// |
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////////////////////////////////////////////////////////////////////////// |
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// Notifies shared code of a monitor connection or disconnection |
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// |
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void _glfwInputMonitor(_GLFWmonitor* monitor, int action, int placement) |
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{ |
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assert(monitor != NULL); |
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assert(action == GLFW_CONNECTED || action == GLFW_DISCONNECTED); |
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assert(placement == _GLFW_INSERT_FIRST || placement == _GLFW_INSERT_LAST); |
102 |
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if (action == GLFW_CONNECTED) |
104 |
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{ |
105 |
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_glfw.monitorCount++; |
106 |
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_glfw.monitors = |
107 |
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_glfw_realloc(_glfw.monitors, |
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sizeof(_GLFWmonitor*) * _glfw.monitorCount); |
109 |
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if (placement == _GLFW_INSERT_FIRST) |
111 |
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{ |
112 |
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memmove(_glfw.monitors + 1, |
113 |
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_glfw.monitors, |
114 |
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((size_t) _glfw.monitorCount - 1) * sizeof(_GLFWmonitor*)); |
115 |
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_glfw.monitors[0] = monitor; |
116 |
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} |
117 |
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else |
118 |
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_glfw.monitors[_glfw.monitorCount - 1] = monitor; |
119 |
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} |
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else if (action == GLFW_DISCONNECTED) |
121 |
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{ |
122 |
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int i; |
123 |
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_GLFWwindow* window; |
124 |
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125 |
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for (window = _glfw.windowListHead; window; window = window->next) |
126 |
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{ |
127 |
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if (window->monitor == monitor) |
128 |
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{ |
129 |
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int width, height, xoff, yoff; |
130 |
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_glfw.platform.getWindowSize(window, &width, &height); |
131 |
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_glfw.platform.setWindowMonitor(window, NULL, 0, 0, width, height, 0); |
132 |
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_glfw.platform.getWindowFrameSize(window, &xoff, &yoff, NULL, NULL); |
133 |
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_glfw.platform.setWindowPos(window, xoff, yoff); |
134 |
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} |
135 |
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} |
136 |
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137 |
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for (i = 0; i < _glfw.monitorCount; i++) |
138 |
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{ |
139 |
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if (_glfw.monitors[i] == monitor) |
140 |
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{ |
141 |
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_glfw.monitorCount--; |
142 |
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memmove(_glfw.monitors + i, |
143 |
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_glfw.monitors + i + 1, |
144 |
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((size_t) _glfw.monitorCount - i) * sizeof(_GLFWmonitor*)); |
145 |
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break; |
146 |
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} |
147 |
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} |
148 |
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} |
149 |
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150 |
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if (_glfw.callbacks.monitor) |
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_glfw.callbacks.monitor((GLFWmonitor*) monitor, action); |
152 |
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153 |
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if (action == GLFW_DISCONNECTED) |
154 |
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_glfwFreeMonitor(monitor); |
155 |
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} |
156 |
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157 |
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// Notifies shared code that a full screen window has acquired or released |
158 |
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// a monitor |
159 |
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// |
160 |
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void _glfwInputMonitorWindow(_GLFWmonitor* monitor, _GLFWwindow* window) |
161 |
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{ |
162 |
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assert(monitor != NULL); |
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monitor->window = window; |
164 |
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} |
165 |
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166 |
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////////////////////////////////////////////////////////////////////////// |
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////// GLFW internal API ////// |
169 |
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////////////////////////////////////////////////////////////////////////// |
170 |
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171 |
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// Allocates and returns a monitor object with the specified name and dimensions |
172 |
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// |
173 |
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_GLFWmonitor* _glfwAllocMonitor(const char* name, int widthMM, int heightMM) |
174 |
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{ |
175 |
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_GLFWmonitor* monitor = _glfw_calloc(1, sizeof(_GLFWmonitor)); |
176 |
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monitor->widthMM = widthMM; |
177 |
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monitor->heightMM = heightMM; |
178 |
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strncpy(monitor->name, name, sizeof(monitor->name) - 1); |
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return monitor; |
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} |
183 |
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184 |
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// Frees a monitor object and any data associated with it |
185 |
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// |
186 |
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void _glfwFreeMonitor(_GLFWmonitor* monitor) |
187 |
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{ |
188 |
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if (monitor == NULL) |
189 |
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return; |
190 |
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191 |
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_glfw.platform.freeMonitor(monitor); |
192 |
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193 |
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_glfwFreeGammaArrays(&monitor->originalRamp); |
194 |
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_glfwFreeGammaArrays(&monitor->currentRamp); |
195 |
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196 |
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_glfw_free(monitor->modes); |
197 |
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_glfw_free(monitor); |
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} |
199 |
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200 |
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// Allocates red, green and blue value arrays of the specified size |
201 |
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// |
202 |
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void _glfwAllocGammaArrays(GLFWgammaramp* ramp, unsigned int size) |
203 |
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{ |
204 |
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ramp->red = _glfw_calloc(size, sizeof(unsigned short)); |
205 |
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ramp->green = _glfw_calloc(size, sizeof(unsigned short)); |
206 |
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ramp->blue = _glfw_calloc(size, sizeof(unsigned short)); |
207 |
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ramp->size = size; |
208 |
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} |
209 |
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210 |
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// Frees the red, green and blue value arrays and clears the struct |
211 |
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// |
212 |
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✗ |
void _glfwFreeGammaArrays(GLFWgammaramp* ramp) |
213 |
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{ |
214 |
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_glfw_free(ramp->red); |
215 |
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_glfw_free(ramp->green); |
216 |
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_glfw_free(ramp->blue); |
217 |
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218 |
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memset(ramp, 0, sizeof(GLFWgammaramp)); |
219 |
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} |
220 |
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221 |
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// Chooses the video mode most closely matching the desired one |
222 |
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// |
223 |
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✗ |
const GLFWvidmode* _glfwChooseVideoMode(_GLFWmonitor* monitor, |
224 |
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const GLFWvidmode* desired) |
225 |
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{ |
226 |
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int i; |
227 |
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unsigned int sizeDiff, leastSizeDiff = UINT_MAX; |
228 |
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unsigned int rateDiff, leastRateDiff = UINT_MAX; |
229 |
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unsigned int colorDiff, leastColorDiff = UINT_MAX; |
230 |
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const GLFWvidmode* current; |
231 |
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const GLFWvidmode* closest = NULL; |
232 |
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233 |
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✗ |
if (!refreshVideoModes(monitor)) |
234 |
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return NULL; |
235 |
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236 |
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✗ |
for (i = 0; i < monitor->modeCount; i++) |
237 |
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{ |
238 |
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current = monitor->modes + i; |
239 |
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240 |
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colorDiff = 0; |
241 |
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242 |
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✗ |
if (desired->redBits != GLFW_DONT_CARE) |
243 |
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colorDiff += abs(current->redBits - desired->redBits); |
244 |
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if (desired->greenBits != GLFW_DONT_CARE) |
245 |
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colorDiff += abs(current->greenBits - desired->greenBits); |
246 |
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if (desired->blueBits != GLFW_DONT_CARE) |
247 |
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colorDiff += abs(current->blueBits - desired->blueBits); |
248 |
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249 |
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sizeDiff = abs((current->width - desired->width) * |
250 |
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(current->width - desired->width) + |
251 |
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(current->height - desired->height) * |
252 |
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(current->height - desired->height)); |
253 |
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254 |
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if (desired->refreshRate != GLFW_DONT_CARE) |
255 |
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rateDiff = abs(current->refreshRate - desired->refreshRate); |
256 |
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else |
257 |
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rateDiff = UINT_MAX - current->refreshRate; |
258 |
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259 |
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if ((colorDiff < leastColorDiff) || |
260 |
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(colorDiff == leastColorDiff && sizeDiff < leastSizeDiff) || |
261 |
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(colorDiff == leastColorDiff && sizeDiff == leastSizeDiff && rateDiff < leastRateDiff)) |
262 |
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{ |
263 |
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closest = current; |
264 |
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leastSizeDiff = sizeDiff; |
265 |
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leastRateDiff = rateDiff; |
266 |
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leastColorDiff = colorDiff; |
267 |
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} |
268 |
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} |
269 |
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270 |
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return closest; |
271 |
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} |
272 |
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273 |
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// Performs lexical comparison between two @ref GLFWvidmode structures |
274 |
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// |
275 |
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✗ |
int _glfwCompareVideoModes(const GLFWvidmode* fm, const GLFWvidmode* sm) |
276 |
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{ |
277 |
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return compareVideoModes(fm, sm); |
278 |
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} |
279 |
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280 |
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// Splits a color depth into red, green and blue bit depths |
281 |
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// |
282 |
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✗ |
void _glfwSplitBPP(int bpp, int* red, int* green, int* blue) |
283 |
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{ |
284 |
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int delta; |
285 |
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286 |
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// We assume that by 32 the user really meant 24 |
287 |
|
✗ |
if (bpp == 32) |
288 |
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bpp = 24; |
289 |
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290 |
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// Convert "bits per pixel" to red, green & blue sizes |
291 |
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|
292 |
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✗ |
*red = *green = *blue = bpp / 3; |
293 |
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✗ |
delta = bpp - (*red * 3); |
294 |
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✗ |
if (delta >= 1) |
295 |
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✗ |
*green = *green + 1; |
296 |
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|
297 |
|
✗ |
if (delta == 2) |
298 |
|
✗ |
*red = *red + 1; |
299 |
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} |
300 |
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301 |
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302 |
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////////////////////////////////////////////////////////////////////////// |
303 |
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////// GLFW public API ////// |
304 |
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////////////////////////////////////////////////////////////////////////// |
305 |
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|
306 |
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✗ |
GLFWAPI GLFWmonitor** glfwGetMonitors(int* count) |
307 |
|
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{ |
308 |
|
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assert(count != NULL); |
309 |
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|
310 |
|
✗ |
*count = 0; |
311 |
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|
312 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
313 |
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|
314 |
|
✗ |
*count = _glfw.monitorCount; |
315 |
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✗ |
return (GLFWmonitor**) _glfw.monitors; |
316 |
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} |
317 |
|
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|
318 |
|
✗ |
GLFWAPI GLFWmonitor* glfwGetPrimaryMonitor(void) |
319 |
|
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{ |
320 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
321 |
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|
322 |
|
✗ |
if (!_glfw.monitorCount) |
323 |
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return NULL; |
324 |
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|
325 |
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✗ |
return (GLFWmonitor*) _glfw.monitors[0]; |
326 |
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} |
327 |
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|
328 |
|
✗ |
GLFWAPI void glfwGetMonitorPos(GLFWmonitor* handle, int* xpos, int* ypos) |
329 |
|
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{ |
330 |
|
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_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
331 |
|
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assert(monitor != NULL); |
332 |
|
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|
333 |
|
✗ |
if (xpos) |
334 |
|
✗ |
*xpos = 0; |
335 |
|
✗ |
if (ypos) |
336 |
|
✗ |
*ypos = 0; |
337 |
|
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|
338 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
339 |
|
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|
340 |
|
✗ |
_glfw.platform.getMonitorPos(monitor, xpos, ypos); |
341 |
|
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} |
342 |
|
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|
343 |
|
✗ |
GLFWAPI void glfwGetMonitorWorkarea(GLFWmonitor* handle, |
344 |
|
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int* xpos, int* ypos, |
345 |
|
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int* width, int* height) |
346 |
|
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{ |
347 |
|
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_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
348 |
|
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assert(monitor != NULL); |
349 |
|
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|
350 |
|
✗ |
if (xpos) |
351 |
|
✗ |
*xpos = 0; |
352 |
|
✗ |
if (ypos) |
353 |
|
✗ |
*ypos = 0; |
354 |
|
✗ |
if (width) |
355 |
|
✗ |
*width = 0; |
356 |
|
✗ |
if (height) |
357 |
|
✗ |
*height = 0; |
358 |
|
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|
359 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
360 |
|
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|
361 |
|
✗ |
_glfw.platform.getMonitorWorkarea(monitor, xpos, ypos, width, height); |
362 |
|
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} |
363 |
|
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|
364 |
|
✗ |
GLFWAPI void glfwGetMonitorPhysicalSize(GLFWmonitor* handle, int* widthMM, int* heightMM) |
365 |
|
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{ |
366 |
|
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_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
367 |
|
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assert(monitor != NULL); |
368 |
|
|
|
369 |
|
✗ |
if (widthMM) |
370 |
|
✗ |
*widthMM = 0; |
371 |
|
✗ |
if (heightMM) |
372 |
|
✗ |
*heightMM = 0; |
373 |
|
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|
374 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
375 |
|
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|
376 |
|
✗ |
if (widthMM) |
377 |
|
✗ |
*widthMM = monitor->widthMM; |
378 |
|
✗ |
if (heightMM) |
379 |
|
✗ |
*heightMM = monitor->heightMM; |
380 |
|
|
} |
381 |
|
|
|
382 |
|
✗ |
GLFWAPI void glfwGetMonitorContentScale(GLFWmonitor* handle, |
383 |
|
|
float* xscale, float* yscale) |
384 |
|
|
{ |
385 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
386 |
|
|
assert(monitor != NULL); |
387 |
|
|
|
388 |
|
✗ |
if (xscale) |
389 |
|
✗ |
*xscale = 0.f; |
390 |
|
✗ |
if (yscale) |
391 |
|
✗ |
*yscale = 0.f; |
392 |
|
|
|
393 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
394 |
|
✗ |
_glfw.platform.getMonitorContentScale(monitor, xscale, yscale); |
395 |
|
|
} |
396 |
|
|
|
397 |
|
✗ |
GLFWAPI const char* glfwGetMonitorName(GLFWmonitor* handle) |
398 |
|
|
{ |
399 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
400 |
|
|
assert(monitor != NULL); |
401 |
|
|
|
402 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
403 |
|
✗ |
return monitor->name; |
404 |
|
|
} |
405 |
|
|
|
406 |
|
✗ |
GLFWAPI void glfwSetMonitorUserPointer(GLFWmonitor* handle, void* pointer) |
407 |
|
|
{ |
408 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
409 |
|
|
assert(monitor != NULL); |
410 |
|
|
|
411 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
412 |
|
✗ |
monitor->userPointer = pointer; |
413 |
|
|
} |
414 |
|
|
|
415 |
|
✗ |
GLFWAPI void* glfwGetMonitorUserPointer(GLFWmonitor* handle) |
416 |
|
|
{ |
417 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
418 |
|
|
assert(monitor != NULL); |
419 |
|
|
|
420 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
421 |
|
✗ |
return monitor->userPointer; |
422 |
|
|
} |
423 |
|
|
|
424 |
|
✗ |
GLFWAPI GLFWmonitorfun glfwSetMonitorCallback(GLFWmonitorfun cbfun) |
425 |
|
|
{ |
426 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
427 |
|
✗ |
_GLFW_SWAP(GLFWmonitorfun, _glfw.callbacks.monitor, cbfun); |
428 |
|
✗ |
return cbfun; |
429 |
|
|
} |
430 |
|
|
|
431 |
|
✗ |
GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* handle, int* count) |
432 |
|
|
{ |
433 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
434 |
|
|
assert(monitor != NULL); |
435 |
|
|
assert(count != NULL); |
436 |
|
|
|
437 |
|
✗ |
*count = 0; |
438 |
|
|
|
439 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
440 |
|
|
|
441 |
|
✗ |
if (!refreshVideoModes(monitor)) |
442 |
|
|
return NULL; |
443 |
|
|
|
444 |
|
✗ |
*count = monitor->modeCount; |
445 |
|
✗ |
return monitor->modes; |
446 |
|
|
} |
447 |
|
|
|
448 |
|
✗ |
GLFWAPI const GLFWvidmode* glfwGetVideoMode(GLFWmonitor* handle) |
449 |
|
|
{ |
450 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
451 |
|
|
assert(monitor != NULL); |
452 |
|
|
|
453 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
454 |
|
|
|
455 |
|
✗ |
_glfw.platform.getVideoMode(monitor, &monitor->currentMode); |
456 |
|
✗ |
return &monitor->currentMode; |
457 |
|
|
} |
458 |
|
|
|
459 |
|
✗ |
GLFWAPI void glfwSetGamma(GLFWmonitor* handle, float gamma) |
460 |
|
|
{ |
461 |
|
|
unsigned int i; |
462 |
|
|
unsigned short* values; |
463 |
|
|
GLFWgammaramp ramp; |
464 |
|
|
const GLFWgammaramp* original; |
465 |
|
|
assert(handle != NULL); |
466 |
|
|
assert(gamma > 0.f); |
467 |
|
|
assert(gamma <= FLT_MAX); |
468 |
|
|
|
469 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
470 |
|
|
|
471 |
|
✗ |
if (gamma != gamma || gamma <= 0.f || gamma > FLT_MAX) |
472 |
|
|
{ |
473 |
|
✗ |
_glfwInputError(GLFW_INVALID_VALUE, "Invalid gamma value %f", gamma); |
474 |
|
✗ |
return; |
475 |
|
|
} |
476 |
|
|
|
477 |
|
✗ |
original = glfwGetGammaRamp(handle); |
478 |
|
✗ |
if (!original) |
479 |
|
|
return; |
480 |
|
|
|
481 |
|
✗ |
values = _glfw_calloc(original->size, sizeof(unsigned short)); |
482 |
|
|
|
483 |
|
✗ |
for (i = 0; i < original->size; i++) |
484 |
|
|
{ |
485 |
|
|
float value; |
486 |
|
|
|
487 |
|
|
// Calculate intensity |
488 |
|
✗ |
value = i / (float) (original->size - 1); |
489 |
|
|
// Apply gamma curve |
490 |
|
✗ |
value = powf(value, 1.f / gamma) * 65535.f + 0.5f; |
491 |
|
|
// Clamp to value range |
492 |
|
✗ |
value = _glfw_fminf(value, 65535.f); |
493 |
|
|
|
494 |
|
✗ |
values[i] = (unsigned short) value; |
495 |
|
|
} |
496 |
|
|
|
497 |
|
✗ |
ramp.red = values; |
498 |
|
✗ |
ramp.green = values; |
499 |
|
✗ |
ramp.blue = values; |
500 |
|
✗ |
ramp.size = original->size; |
501 |
|
|
|
502 |
|
✗ |
glfwSetGammaRamp(handle, &ramp); |
503 |
|
✗ |
_glfw_free(values); |
504 |
|
|
} |
505 |
|
|
|
506 |
|
✗ |
GLFWAPI const GLFWgammaramp* glfwGetGammaRamp(GLFWmonitor* handle) |
507 |
|
|
{ |
508 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
509 |
|
|
assert(monitor != NULL); |
510 |
|
|
|
511 |
|
✗ |
_GLFW_REQUIRE_INIT_OR_RETURN(NULL); |
512 |
|
|
|
513 |
|
✗ |
_glfwFreeGammaArrays(&monitor->currentRamp); |
514 |
|
✗ |
if (!_glfw.platform.getGammaRamp(monitor, &monitor->currentRamp)) |
515 |
|
✗ |
return NULL; |
516 |
|
|
|
517 |
|
|
return &monitor->currentRamp; |
518 |
|
|
} |
519 |
|
|
|
520 |
|
✗ |
GLFWAPI void glfwSetGammaRamp(GLFWmonitor* handle, const GLFWgammaramp* ramp) |
521 |
|
|
{ |
522 |
|
|
_GLFWmonitor* monitor = (_GLFWmonitor*) handle; |
523 |
|
|
assert(monitor != NULL); |
524 |
|
|
assert(ramp != NULL); |
525 |
|
|
assert(ramp->size > 0); |
526 |
|
|
assert(ramp->red != NULL); |
527 |
|
|
assert(ramp->green != NULL); |
528 |
|
|
assert(ramp->blue != NULL); |
529 |
|
|
|
530 |
|
✗ |
_GLFW_REQUIRE_INIT(); |
531 |
|
|
|
532 |
|
✗ |
if (ramp->size <= 0) |
533 |
|
|
{ |
534 |
|
✗ |
_glfwInputError(GLFW_INVALID_VALUE, |
535 |
|
|
"Invalid gamma ramp size %i", |
536 |
|
|
ramp->size); |
537 |
|
✗ |
return; |
538 |
|
|
} |
539 |
|
|
|
540 |
|
✗ |
if (!monitor->originalRamp.size) |
541 |
|
|
{ |
542 |
|
✗ |
if (!_glfw.platform.getGammaRamp(monitor, &monitor->originalRamp)) |
543 |
|
|
return; |
544 |
|
|
} |
545 |
|
|
|
546 |
|
✗ |
_glfw.platform.setGammaRamp(monitor, ramp); |
547 |
|
|
} |
548 |
|
|
|
549 |
|
|
|