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| 5131 | clevermous | 1 | |
| 2 | > |
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| 3 | > |
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| 4 | >SDL_SetGammaRamp |
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| 5 | > |
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| 6 | NAME="GENERATOR" |
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| 7 | CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
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| 8 | "> |
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| 9 | REL="HOME" |
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| 10 | TITLE="SDL Library Documentation" |
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| 13 | TITLE="Video" |
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| 14 | HREF="video.html"> |
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| 15 | REL="PREVIOUS" |
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| 16 | TITLE="SDL_GetGammaRamp" |
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| 17 | HREF="sdlgetgammaramp.html"> |
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| 18 | REL="NEXT" |
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| 19 | TITLE="SDL_MapRGB" |
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| 20 | HREF="sdlmaprgb.html"> |
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| 21 | > |
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| 35 | > |
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| 36 | > |
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| 37 | COLSPAN="3" |
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| 38 | ALIGN="center" |
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| 39 | >SDL Library Documentation |
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| 40 | > |
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| 41 | > |
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| 42 | > |
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| 43 | WIDTH="10%" |
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| 44 | ALIGN="left" |
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| 46 | > |
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| 47 | HREF="sdlgetgammaramp.html" |
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| 48 | >Prev |
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| 59 | > |
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| 60 | HREF="sdlmaprgb.html" |
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| 61 | >Next |
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| 62 | > |
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| 63 | > |
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| 65 | > |
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| 66 | ALIGN="LEFT" |
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| 67 | WIDTH="100%"> |
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| 68 | > |
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| 69 | > |
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| 70 | NAME="SDLSETGAMMARAMP" |
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| 71 | >SDL_SetGammaRamp |
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| 72 | > |
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| 73 | > |
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| 74 | CLASS="REFNAMEDIV" |
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| 75 | > |
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| 76 | NAME="AEN1209" |
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| 77 | > |
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| 78 | > |
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| 79 | >Name |
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| 80 | >SDL_SetGammaRamp -- Sets the color gamma lookup tables for the display |
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| 81 | > |
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| 82 | CLASS="REFSYNOPSISDIV" |
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| 83 | > |
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| 84 | NAME="AEN1212" |
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| 85 | > |
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| 86 | > |
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| 87 | >Synopsis |
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| 88 | > |
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| 89 | CLASS="FUNCSYNOPSIS" |
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| 90 | > |
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| 91 | NAME="AEN1213" |
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| 92 | > |
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| 93 | > |
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| 94 | > |
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| 95 | > |
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| 96 | CLASS="FUNCSYNOPSISINFO" |
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| 97 | >#include "SDL.h" |
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| 98 | > |
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| 99 | > |
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| 100 | > |
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| 101 | CLASS="FUNCDEF" |
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| 102 | >int |
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| 103 | CLASS="FSFUNC" |
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| 104 | >SDL_SetGammaRamp |
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| 105 | > |
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| 106 | >(Uint16 *redtable, Uint16 *greentable, Uint16 *bluetable); |
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| 107 | > |
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| 108 | > |
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| 109 | > |
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| 110 | > |
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| 111 | > |
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| 112 | > |
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| 113 | CLASS="REFSECT1" |
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| 114 | > |
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| 115 | NAME="AEN1219" |
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| 116 | > |
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| 117 | > |
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| 118 | >Description |
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| 119 | > |
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| 120 | >Sets the gamma lookup tables for the display for each color component. |
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| 121 | Each table is an array of 256 Uint16 values, representing a mapping |
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| 122 | between the input and output for that channel. The input is the index |
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| 123 | into the array, and the output is the 16-bit gamma value at that index, |
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| 124 | scaled to the output color precision. You may pass NULL to any of the |
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| 125 | channels to leave them unchanged. |
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| 126 | > |
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| 127 | >This function adjusts the gamma based on lookup tables, you can also |
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| 128 | have the gamma calculated based on a "gamma function" parameter with |
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| 129 | |||
| 130 | HREF="sdlsetgamma.html" |
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| 131 | >SDL_SetGamma |
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| 132 | >. |
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| 133 | > |
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| 134 | >Not all display hardware is able to change gamma. |
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| 135 | > |
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| 136 | > |
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| 137 | CLASS="REFSECT1" |
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| 138 | > |
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| 139 | NAME="AEN1225" |
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| 140 | > |
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| 141 | > |
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| 142 | >Return Value |
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| 143 | > |
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| 144 | >Returns -1 on error (or if gamma adjustment is not supported). |
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| 145 | > |
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| 146 | > |
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| 147 | CLASS="REFSECT1" |
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| 148 | > |
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| 149 | NAME="AEN1228" |
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| 150 | > |
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| 151 | > |
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| 152 | >See Also |
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| 153 | > |
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| 154 | > |
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| 155 | HREF="sdlsetgamma.html" |
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| 156 | >SDL_SetGamma |
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| 157 | > |
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| 158 | |||
| 159 | HREF="sdlgetgammaramp.html" |
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| 160 | >SDL_GetGammaRamp |
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| 161 | > |
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| 162 | > |
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| 163 | > |
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| 174 | WIDTH="33%" |
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| 175 | ALIGN="left" |
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| 176 | VALIGN="top" |
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| 177 | > |
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| 178 | HREF="sdlgetgammaramp.html" |
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| 179 | >Prev |
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| 186 | HREF="index.html" |
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| 194 | HREF="sdlmaprgb.html" |
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| 195 | >Next |
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| 199 | > |
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| 200 | WIDTH="33%" |
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| 202 | VALIGN="top" |
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| 203 | >SDL_GetGammaRamp |
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| 204 | > |
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| 205 | WIDTH="34%" |
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| 209 | HREF="video.html" |
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| 216 | >SDL_MapRGB |
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| 217 | > |
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| 222 | > |