Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gamma.c @ 1361:19418e4422cb
New configure-based build system. Still work in progress, but much improved
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 16 Feb 2006 10:11:48 +0000 |
| parents | c9b51268668f |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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parents:
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13 Lesser General Public License for more details. |
| 0 | 14 |
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parents:
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15 You should have received a copy of the GNU Lesser General Public |
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1168
diff
changeset
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16 License along with this library; if not, write to the Free Software |
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #include "SDL.h" | |
| 24 #include "SDL_events.h" | |
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New configure-based build system. Still work in progress, but much improved
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25 #include "../../events/SDL_events_c.h" |
| 0 | 26 #include "SDL_x11video.h" |
| 27 | |
| 28 /* From the X server sources... */ | |
| 29 #define MAX_GAMMA 10.0 | |
| 30 #define MIN_GAMMA (1.0/MAX_GAMMA) | |
| 31 | |
| 32 static int X11_SetGammaNoLock(_THIS, float red, float green, float blue) | |
| 33 { | |
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New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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34 #if SDL_VIDEO_DRIVER_X11_VIDMODE |
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Fixed using the video mode extension on older servers
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35 if (use_vidmode >= 200) { |
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Added SDL_LockRect() and SDL_UnlockRect()
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36 SDL_NAME(XF86VidModeGamma) gamma; |
| 0 | 37 Bool succeeded; |
| 38 | |
| 39 /* Clamp the gamma values */ | |
| 40 if ( red < MIN_GAMMA ) { | |
| 41 gamma.red = MIN_GAMMA; | |
| 42 } else | |
| 43 if ( red > MAX_GAMMA ) { | |
| 44 gamma.red = MAX_GAMMA; | |
| 45 } else { | |
| 46 gamma.red = red; | |
| 47 } | |
| 48 if ( green < MIN_GAMMA ) { | |
| 49 gamma.green = MIN_GAMMA; | |
| 50 } else | |
| 51 if ( green > MAX_GAMMA ) { | |
| 52 gamma.green = MAX_GAMMA; | |
| 53 } else { | |
| 54 gamma.green = green; | |
| 55 } | |
| 56 if ( blue < MIN_GAMMA ) { | |
| 57 gamma.blue = MIN_GAMMA; | |
| 58 } else | |
| 59 if ( blue > MAX_GAMMA ) { | |
| 60 gamma.blue = MAX_GAMMA; | |
| 61 } else { | |
| 62 gamma.blue = blue; | |
| 63 } | |
| 64 if ( SDL_GetAppState() & SDL_APPACTIVE ) { | |
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65 succeeded = SDL_NAME(XF86VidModeSetGamma)(SDL_Display, SDL_Screen, &gamma); |
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Dynamically load X11 libraries like we currently do for alsa, esd, etc.
Ryan C. Gordon <icculus@icculus.org>
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66 pXSync(SDL_Display, False); |
| 0 | 67 } else { |
| 68 gamma_saved[0] = gamma.red; | |
| 69 gamma_saved[1] = gamma.green; | |
| 70 gamma_saved[2] = gamma.blue; | |
| 71 succeeded = True; | |
| 72 } | |
| 73 if ( succeeded ) { | |
| 74 ++gamma_changed; | |
| 75 } | |
| 76 return succeeded ? 0 : -1; | |
| 77 } | |
| 78 #endif | |
| 79 SDL_SetError("Gamma correction not supported"); | |
| 80 return -1; | |
| 81 } | |
| 82 int X11_SetVidModeGamma(_THIS, float red, float green, float blue) | |
| 83 { | |
| 84 int result; | |
| 85 | |
| 86 SDL_Lock_EventThread(); | |
| 87 result = X11_SetGammaNoLock(this, red, green, blue); | |
| 88 SDL_Unlock_EventThread(); | |
| 89 | |
| 90 return(result); | |
| 91 } | |
| 92 | |
| 93 static int X11_GetGammaNoLock(_THIS, float *red, float *green, float *blue) | |
| 94 { | |
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New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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95 #if SDL_VIDEO_DRIVER_X11_VIDMODE |
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96 if (use_vidmode >= 200) { |
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Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
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97 SDL_NAME(XF86VidModeGamma) gamma; |
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eadc0746dfaf
Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
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98 if (SDL_NAME(XF86VidModeGetGamma)(SDL_Display, SDL_Screen, &gamma)) { |
| 0 | 99 *red = gamma.red; |
| 100 *green = gamma.green; | |
| 101 *blue = gamma.blue; | |
| 102 return 0; | |
| 103 } | |
| 104 return -1; | |
| 105 } | |
| 106 #endif | |
| 107 return -1; | |
| 108 } | |
| 109 int X11_GetVidModeGamma(_THIS, float *red, float *green, float *blue) | |
| 110 { | |
| 111 int result; | |
| 112 | |
| 113 SDL_Lock_EventThread(); | |
| 114 result = X11_GetGammaNoLock(this, red, green, blue); | |
| 115 SDL_Unlock_EventThread(); | |
| 116 | |
| 117 return(result); | |
| 118 } | |
| 119 | |
| 120 void X11_SaveVidModeGamma(_THIS) | |
| 121 { | |
| 122 /* Try to save the current gamma, otherwise disable gamma control */ | |
| 123 if ( X11_GetGammaNoLock(this, | |
| 124 &gamma_saved[0], &gamma_saved[1], &gamma_saved[2]) < 0 ) { | |
| 125 this->SetGamma = 0; | |
| 126 this->GetGamma = 0; | |
| 127 } | |
| 128 gamma_changed = 0; | |
| 129 } | |
| 130 void X11_SwapVidModeGamma(_THIS) | |
| 131 { | |
| 132 float new_gamma[3]; | |
| 133 | |
| 134 if ( gamma_changed ) { | |
| 135 new_gamma[0] = gamma_saved[0]; | |
| 136 new_gamma[1] = gamma_saved[1]; | |
| 137 new_gamma[2] = gamma_saved[2]; | |
| 138 X11_GetGammaNoLock(this, &gamma_saved[0], &gamma_saved[1], &gamma_saved[2]); | |
| 139 X11_SetGammaNoLock(this, new_gamma[0], new_gamma[1], new_gamma[2]); | |
| 140 } | |
| 141 } |