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Annotated edit history of SDL_SetGammaRamp(3) version 2, including all changes. View license author blame.
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2 perry 1 SDL_!SetGammaRamp
2 !!!SDL_!SetGammaRamp
1 perry 3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 RETURN VALUE
7 SEE ALSO
8 ----
9 !!NAME
10
11
2 perry 12 SDL_!SetGammaRamp- Sets the color gamma lookup tables for the display
1 perry 13 !!SYNOPSIS
14
15
16 __#include __
17
18
2 perry 19 __int SDL_!SetGammaRamp__(__Uint16 *redtable, Uint16
1 perry 20 *greentable, Uint16 *bluetable__);
21 !!DESCRIPTION
22
23
24 Sets the gamma lookup tables for the display for each color
25 component. Each table is an array of 256 Uint16 values,
26 representing a mapping between the input and output for that
27 channel. The input is the index into the array, and the
28 output is the 16-bit gamma value at that index, scaled to
29 the output color precision. You may pass NULL to any of the
30 channels to leave them unchanged.
31
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33 This function adjusts the gamma based on lookup tables, you
34 can also have the gamma calculated based on a
2 perry 35 SDL_!SetGamma''.
1 perry 36
37
38 Not all display hardware is able to change
39 gamma.
40 !!RETURN VALUE
41
42
43 Returns -1 on error (or if gamma adjustment is not
44 supported).
45 !!SEE ALSO
46
47
2 perry 48 ''SDL_!SetGamma SDL_!GetGammaRamp''
1 perry 49 ----
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