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view docs/html/sdlgetgammaramp.html @ 3880:74e828c64315 SDL-1.2

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:45:37 +0000
parents 355632dca928
children
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<HTML
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>SDL_GetGammaRamp</TITLE
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>SDL_GetGammaRamp</H1
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><H2
>Name</H2
>SDL_GetGammaRamp&nbsp;--&nbsp;Gets the color gamma lookup tables for the display</DIV
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>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_GetGammaRamp</B
></CODE
>(Uint16 *redtable, Uint16 *greentable, Uint16 *bluetable);</CODE
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><H2
>Description</H2
><P
>Gets the gamma translation lookup tables currently used by the display.
Each table is an array of 256 Uint16 values.</P
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>Not all display hardware is able to change gamma.</P
></DIV
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>Return Value</H2
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>Returns -1 on error.</P
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>SDL_SetGamma</A
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>SDL_SetGammaRamp</A
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