add some NEON 32bpp blitters
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71><H1
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73NAME="SDLSETGAMMA"
74></A
75>SDL_SetGamma</H1
76><DIV
77CLASS="REFNAMEDIV"
78><A
79NAME="AEN1569"
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81><H2
82>Name</H2
83>SDL_SetGamma&nbsp;--&nbsp;Sets the color gamma function for the display</DIV
84><DIV
85CLASS="REFSYNOPSISDIV"
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89><H2
90>Synopsis</H2
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96><P
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98><PRE
99CLASS="FUNCSYNOPSISINFO"
100>#include "SDL.h"</PRE
101><P
102><CODE
103><CODE
104CLASS="FUNCDEF"
105>int <B
106CLASS="FSFUNC"
107>SDL_SetGamma</B
108></CODE
109>(float redgamma, float greengamma, float bluegamma);</CODE
110></P
111><P
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115><DIV
116CLASS="REFSECT1"
117><A
118NAME="AEN1579"
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120><H2
121>Description</H2
122><P
123>Sets the "gamma function" for the display of each color component. Gamma
124controls the brightness/contrast of colors displayed on the screen.
125A gamma value of <TT
126CLASS="CONSTANT"
127>1.0</TT
128> is identity (i.e., no adjustment
129is made).</P
130><P
131>This function adjusts the gamma based on the "gamma function" parameter,
132you can directly specify lookup tables for gamma adjustment with
133<A
134HREF="sdlsetgammaramp.html"
135>SDL_SetGammaRamp</A
136>.</P
137><P
138>Not all display hardware is able to change gamma.</P
139></DIV
140><DIV
141CLASS="REFSECT1"
142><A
143NAME="AEN1586"
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145><H2
146>Return Value</H2
147><P
148>Returns -1 on error (or if gamma adjustment is not supported).</P
149></DIV
150><DIV
151CLASS="REFSECT1"
152><A
153NAME="AEN1589"
154></A
155><H2
156>See Also</H2
157><P
158><A
159HREF="sdlgetgammaramp.html"
160>SDL_GetGammaRamp</A
161>
162<A
163HREF="sdlsetgammaramp.html"
164>SDL_SetGammaRamp</A
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