Mercurial > sdl-ios-xcode
annotate docs/html/sdlshowcursor.html @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 08 Jan 2006 21:18:15 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_ShowCursor</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Video" | |
| 14 HREF="video.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_GetCursor" | |
| 17 HREF="sdlgetcursor.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GL_LoadLibrary" | |
| 20 HREF="sdlglloadlibrary.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
|
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31 SUMMARY="Header navigation table" |
| 0 | 32 WIDTH="100%" |
| 33 BORDER="0" | |
| 34 CELLPADDING="0" | |
| 35 CELLSPACING="0" | |
| 36 ><TR | |
| 37 ><TH | |
| 38 COLSPAN="3" | |
| 39 ALIGN="center" | |
| 40 >SDL Library Documentation</TH | |
| 41 ></TR | |
| 42 ><TR | |
| 43 ><TD | |
| 44 WIDTH="10%" | |
| 45 ALIGN="left" | |
| 46 VALIGN="bottom" | |
| 47 ><A | |
| 48 HREF="sdlgetcursor.html" | |
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49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 ></TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="sdlglloadlibrary.html" | |
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63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><H1 | |
| 72 ><A | |
| 73 NAME="SDLSHOWCURSOR" | |
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74 ></A |
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75 >SDL_ShowCursor</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN2615" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_ShowCursor -- Toggle whether or not the cursor is shown on the screen.</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN2618" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN2619" |
| 0 | 95 ></A |
| 96 ><P | |
| 97 ></P | |
| 98 ><PRE | |
| 99 CLASS="FUNCSYNOPSISINFO" | |
| 100 >#include "SDL.h"</PRE | |
| 101 ><P | |
| 102 ><CODE | |
| 103 ><CODE | |
| 104 CLASS="FUNCDEF" | |
| 105 >int <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_ShowCursor</B | |
| 108 ></CODE | |
| 109 >(int toggle);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN2625" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Toggle whether or not the cursor is shown on the screen. Passing <TT | |
| 124 CLASS="LITERAL" | |
| 125 >SDL_ENABLE</TT | |
| 126 > displays the cursor and passing <TT | |
| 127 CLASS="LITERAL" | |
| 128 >SDL_DISABLE</TT | |
| 129 > hides it. The current state of the mouse cursor can be queried by passing <TT | |
| 130 CLASS="LITERAL" | |
| 131 >SDL_QUERY</TT | |
| 132 >, either <TT | |
| 133 CLASS="LITERAL" | |
| 134 >SDL_DISABLE</TT | |
| 135 > or <TT | |
| 136 CLASS="LITERAL" | |
| 137 >SDL_ENABLE</TT | |
| 138 > will be returned.</P | |
| 139 ><P | |
| 140 >The cursor starts off displayed, but can be turned off.</P | |
| 141 ></DIV | |
| 142 ><DIV | |
| 143 CLASS="REFSECT1" | |
| 144 ><A | |
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145 NAME="AEN2634" |
| 0 | 146 ></A |
| 147 ><H2 | |
| 148 >Return Value</H2 | |
| 149 ><P | |
| 150 >Returns the current state of the cursor.</P | |
| 151 ></DIV | |
| 152 ><DIV | |
| 153 CLASS="REFSECT1" | |
| 154 ><A | |
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155 NAME="AEN2637" |
| 0 | 156 ></A |
| 157 ><H2 | |
| 158 >See Also</H2 | |
| 159 ><P | |
| 160 ><A | |
| 161 HREF="sdlcreatecursor.html" | |
| 162 ><TT | |
| 163 CLASS="FUNCTION" | |
| 164 >SDL_CreateCursor</TT | |
| 165 ></A | |
| 166 >, | |
| 167 <A | |
| 168 HREF="sdlsetcursor.html" | |
| 169 ><TT | |
| 170 CLASS="FUNCTION" | |
| 171 >SDL_SetCursor</TT | |
| 172 ></A | |
| 173 ></P | |
| 174 ></DIV | |
| 175 ><DIV | |
| 176 CLASS="NAVFOOTER" | |
| 177 ><HR | |
| 178 ALIGN="LEFT" | |
| 179 WIDTH="100%"><TABLE | |
|
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180 SUMMARY="Footer navigation table" |
| 0 | 181 WIDTH="100%" |
| 182 BORDER="0" | |
| 183 CELLPADDING="0" | |
| 184 CELLSPACING="0" | |
| 185 ><TR | |
| 186 ><TD | |
| 187 WIDTH="33%" | |
| 188 ALIGN="left" | |
| 189 VALIGN="top" | |
| 190 ><A | |
| 191 HREF="sdlgetcursor.html" | |
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355632dca928
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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192 ACCESSKEY="P" |
| 0 | 193 >Prev</A |
| 194 ></TD | |
| 195 ><TD | |
| 196 WIDTH="34%" | |
| 197 ALIGN="center" | |
| 198 VALIGN="top" | |
| 199 ><A | |
| 200 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
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changeset
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201 ACCESSKEY="H" |
| 0 | 202 >Home</A |
| 203 ></TD | |
| 204 ><TD | |
| 205 WIDTH="33%" | |
| 206 ALIGN="right" | |
| 207 VALIGN="top" | |
| 208 ><A | |
| 209 HREF="sdlglloadlibrary.html" | |
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355632dca928
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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210 ACCESSKEY="N" |
| 0 | 211 >Next</A |
| 212 ></TD | |
| 213 ></TR | |
| 214 ><TR | |
| 215 ><TD | |
| 216 WIDTH="33%" | |
| 217 ALIGN="left" | |
| 218 VALIGN="top" | |
| 219 >SDL_GetCursor</TD | |
| 220 ><TD | |
| 221 WIDTH="34%" | |
| 222 ALIGN="center" | |
| 223 VALIGN="top" | |
| 224 ><A | |
| 225 HREF="video.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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226 ACCESSKEY="U" |
| 0 | 227 >Up</A |
| 228 ></TD | |
| 229 ><TD | |
| 230 WIDTH="33%" | |
| 231 ALIGN="right" | |
| 232 VALIGN="top" | |
| 233 >SDL_GL_LoadLibrary</TD | |
| 234 ></TR | |
| 235 ></TABLE | |
| 236 ></DIV | |
| 237 ></BODY | |
| 238 ></HTML | |
| 239 > |