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Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST) From: "Mattias Engdeg?rd" Subject: bug in SDL_GetRGB/GetRGBA There's an embarrassing bug in GetRGB/GetRGBA which apparently has been there for years. It incorrectly converts colours with < 8 bits/channel. It came to my attention today in #sdl. What it does now is (for each channel): rv = (pixel & fmt->Rmask) >> fmt->Rshift; *r = (rv << fmt->Rloss) + (rv >> (8 - fmt->Rloss)); which is wrong; the last line should be *r = (rv << fmt->Rloss) + (rv >> (8 - (fmt->Rloss << 1)));
author Sam Lantinga <slouken@libsdl.org>
date Tue, 12 Aug 2003 15:17:20 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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.TH "SDL_CDPlay" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_CDPlay\- Play a CD
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBint \fBSDL_CDPlay\fP\fR(\fBSDL_CD *cdrom, int start, int length\fR);
.SH "DESCRIPTION"
.PP
Plays the given \fBcdrom\fR, starting a frame \fBstart\fR for \fBlength\fR frames\&.
.SH "RETURN VALUES"
.PP
Returns \fB0\fR on success, or \fB-1\fR on an error\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_CDPlayTracks\fP\fR, \fI\fBSDL_CDStop\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58