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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 355632dca928
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<HTML
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>SDL_WarpMouse</TITLE
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>SDL_WarpMouse</A
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><H2
>Name</H2
>SDL_WarpMouse&nbsp;--&nbsp;Set the position of the mouse cursor.</DIV
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>Synopsis</H2
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><PRE
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>#include "SDL.h"</PRE
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><CODE
><CODE
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>void <B
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>SDL_WarpMouse</B
></CODE
>(Uint16 x, Uint16 y);</CODE
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>Description</H2
><P
>Set the position of the mouse cursor (generates a mouse motion event).</P
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>SDL_MouseMotionEvent</SPAN
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