src/video/win32/SDL_win32gamma.c
author Sam Lantinga <slouken@libsdl.org>
Fri, 28 Jul 2006 08:43:17 +0000
changeset 1952 420716272158
parent 1895 c121d94672cb
child 2859 99210400e8b9
permissions -rw-r--r--
Implemented X11 OpenGL support. Added support for the SDL_VIDEO_OPENGL environment variable.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_win32video.h"
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int
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WIN_SetDisplayGammaRamp(_THIS, Uint16 * ramp)
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{
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    SDL_DisplayData *data = (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    HDC hdc;
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    BOOL succeeded = FALSE;
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    hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);
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    if (hdc) {
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        succeeded = SetDeviceGammaRamp(hdc, ramp);
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        if (!succeeded) {
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            WIN_SetError("SetDeviceGammaRamp()");
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        }
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        DeleteDC(hdc);
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    }
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    return succeeded ? 0 : -1;
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}
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int
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WIN_GetDisplayGammaRamp(_THIS, Uint16 * ramp)
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{
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    SDL_DisplayData *data = (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    HDC hdc;
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    BOOL succeeded = FALSE;
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    hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);
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    if (hdc) {
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        succeeded = GetDeviceGammaRamp(hdc, ramp);
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        if (!succeeded) {
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            WIN_SetError("GetDeviceGammaRamp()");
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        }
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        DeleteDC(hdc);
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    }
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    return succeeded ? 0 : -1;
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}
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