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