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Date: Tue, 11 May 2004 22:05:32 -0400 From: Bob Ippolito Subject: [SDL] SDL_QuartzWM patches I've sent in two small patches to SDL_QuartzWM directly to Sam over the past few months (well, I think I sent both anyway) and neither of them have been implemented. I didn't receive a response, so I'm sure he was just busy and/or they got lost, so I decided to sign up to the list and post them here. This patch rolls both of them together: - Mouse cursor becomes visible if hidden when it moves outside of the game window. If you want it to stay invisible you should warp it because if it's not warped a user might click some random other application! Commercial games behave in this way (or at least Warcraft III does, which is the only one that uses a custom mouse cursor and no warping that I've played in recent memory). - Right mouse button emulation is changed from Command-Click to Control-Click, which is how OS X behaves. Consider copyright assigned to whomever needs it under whichever license it needs to be under.. yadda yadda yadda.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 17 May 2004 00:16:24 +0000
parents 355632dca928
children
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>SDL_MixAudio</TITLE
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>SDL_MixAudio</H1
><DIV
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><A
NAME="AEN7107"
></A
><H2
>Name</H2
>SDL_MixAudio&nbsp;--&nbsp;Mix audio data</DIV
><DIV
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><H2
>Synopsis</H2
><DIV
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_MixAudio</B
></CODE
>(Uint8 *dst, Uint8 *src, Uint32 len, int volume);</CODE
></P
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></DIV
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><A
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><H2
>Description</H2
><P
>This function takes two audio buffers of <TT
CLASS="PARAMETER"
><I
>len</I
></TT
> bytes each
of the playing audio format and mixes them, performing addition, volume
adjustment, and overflow clipping. The <TT
CLASS="PARAMETER"
><I
>volume</I
></TT
> ranges
from 0 to <TT
CLASS="LITERAL"
>SDL_MIX_MAXVOLUME</TT
> and should be set to the maximum
value for full audio volume. Note this does not change hardware volume. This is
provided for convenience -- you can mix your own audio data.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Do not use this function for mixing together more than two streams of sample
data. The output from repeated application of this function may be distorted
by clipping, because there is no accumulator with greater range than the
input (not to mention this being an inefficient way of doing it).
Use mixing functions from SDL_mixer, OpenAL, or write your own mixer instead.</P
></BLOCKQUOTE
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlopenaudio.html"
><TT
CLASS="FUNCTION"
>SDL_OpenAudio</TT
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