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Fixed bug #898 Jeremiah Morris 2009-12-09 16:07:17 PST No-op GlobalToLocal translations in fullscreen mode On my MacBook Pro running 10.6, I noticed a small upward bias on mouse movement in a fullscreen SDL application. The app uses WarpCursor and GetMouseState in a loop to measure relative movement. I tracked it down to NSWindow's convertBaseToScreen: routine, which added a 2-pixel offset on the Y coordinate instead of the expected (+0,+0) translation. In fullscreen mode, QZ_PrivateWarpCursor() does not translate the desired position through QZ_PrivateGlobalToLocal() before passing it to the Core Graphics system. However, QZ_GetMouseLocation() does call the reverse QZ_PrivateLocalToGlobal() even in fullscreen mode. This asymmetry caused problems each time the mouse was moved.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Dec 2009 15:31:37 +0000
parents 355632dca928
children
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<HTML
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>SDL_GetGammaRamp</TITLE
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><H1
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>SDL_GetGammaRamp</H1
><DIV
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><A
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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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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
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><CODE
><CODE
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>int <B
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>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
><P
>Not all display hardware is able to change gamma.</P
></DIV
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><H2
>Return Value</H2
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>Returns -1 on error.</P
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><H2
>See Also</H2
><P
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>SDL_SetGamma</A
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>SDL_SetGammaRamp</A
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