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https://github.com/gwm17/glfw.git
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83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
//========================================================================
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// GLFW 3.0 Win32 - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 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 <limits.h>
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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
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{
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HDC dc;
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WORD values[768];
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DISPLAY_DEVICE display;
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ZeroMemory(&display, sizeof(DISPLAY_DEVICE));
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display.cb = sizeof(DISPLAY_DEVICE);
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EnumDisplayDevices(monitor->win32.name, 0, &display, 0);
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dc = CreateDC(L"DISPLAY", display.DeviceString, NULL, NULL);
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GetDeviceGammaRamp(dc, values);
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DeleteDC(dc);
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_glfwAllocGammaArrays(ramp, 256);
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memcpy(ramp->red, values + 0, 256 * sizeof(unsigned short));
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memcpy(ramp->green, values + 256, 256 * sizeof(unsigned short));
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memcpy(ramp->blue, values + 512, 256 * sizeof(unsigned short));
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}
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void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
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{
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HDC dc;
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WORD values[768];
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DISPLAY_DEVICE display;
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if (ramp->size != 256)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Win32: Gamma ramp size must be 256");
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return;
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}
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memcpy(values + 0, ramp->red, 256 * sizeof(unsigned short));
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memcpy(values + 256, ramp->green, 256 * sizeof(unsigned short));
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memcpy(values + 512, ramp->blue, 256 * sizeof(unsigned short));
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ZeroMemory(&display, sizeof(DISPLAY_DEVICE));
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display.cb = sizeof(DISPLAY_DEVICE);
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EnumDisplayDevices(monitor->win32.name, 0, &display, 0);
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dc = CreateDC(L"DISPLAY", display.DeviceString, NULL, NULL);
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SetDeviceGammaRamp(dc, values);
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DeleteDC(dc);
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}
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