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97 lines
3.4 KiB
97 lines
3.4 KiB
//======================================================================== |
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// GLFW - An OpenGL library |
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// Platform: Cocoa/NSOpenGL |
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// API version: 3.0 |
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// WWW: http://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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#include <string.h> |
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#include <ApplicationServices/ApplicationServices.h> |
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//************************************************************************ |
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//**** GLFW internal functions **** |
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//************************************************************************ |
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//======================================================================== |
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// Save the original gamma ramp so that we can restore it later |
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//======================================================================== |
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void _glfwPlatformGetGammaRamp(GLFWgammaramp* ramp) |
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{ |
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uint32_t sampleCount; |
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int i; |
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CGGammaValue red[GLFW_GAMMA_RAMP_SIZE]; |
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CGGammaValue green[GLFW_GAMMA_RAMP_SIZE]; |
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CGGammaValue blue[GLFW_GAMMA_RAMP_SIZE]; |
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// For now, don't support anything that is not GLFW_GAMMA_RAMP_SIZE |
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if (_glfwLibrary.originalRampSize != GLFW_GAMMA_RAMP_SIZE) |
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return; |
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CGGetDisplayTransferByTable(CGMainDisplayID(), GLFW_GAMMA_RAMP_SIZE, red, green, blue, |
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&sampleCount); |
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for (i = 0; i < GLFW_GAMMA_RAMP_SIZE; i++) |
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{ |
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ramp->red[i] = red[i] * 65535; |
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ramp->green[i] = green[i] * 65535; |
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ramp->blue[i] = blue[i] * 65535; |
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} |
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} |
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//======================================================================== |
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// Make the specified gamma ramp current |
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//======================================================================== |
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void _glfwPlatformSetGammaRamp(const GLFWgammaramp* ramp) |
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{ |
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int i; |
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int size = GLFW_GAMMA_RAMP_SIZE; |
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CGGammaValue red[GLFW_GAMMA_RAMP_SIZE]; |
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CGGammaValue green[GLFW_GAMMA_RAMP_SIZE]; |
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CGGammaValue blue[GLFW_GAMMA_RAMP_SIZE]; |
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// For now, don't support anything that is not GLFW_GAMMA_RAMP_SIZE |
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if (_glfwLibrary.originalRampSize != GLFW_GAMMA_RAMP_SIZE) |
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return; |
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// Convert to float & take the difference of the original gamma and |
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// the linear function. |
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for (i = 0; i < size; i++) |
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{ |
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red[i] = ramp->red[i] / 65535.f; |
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green[i] = ramp->green[i] / 65535.f; |
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blue[i] = ramp->blue[i] / 65535.f; |
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} |
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CGSetDisplayTransferByTable(CGMainDisplayID(), GLFW_GAMMA_RAMP_SIZE, red, green, blue); |
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} |
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