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71 | ><H1 |
72 | ><A |
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74 | ></A |
75 | >SDL_UpdateRects</H1 |
76 | ><DIV |
77 | CLASS="REFNAMEDIV" |
78 | ><A |
79 | NAME="AEN1392" |
80 | ></A |
81 | ><H2 |
82 | >Name</H2 |
83 | >SDL_UpdateRects -- Makes sure the given list of rectangles is updated on the given screen.</DIV |
84 | ><DIV |
85 | CLASS="REFSYNOPSISDIV" |
86 | ><A |
87 | NAME="AEN1395" |
88 | ></A |
89 | ><H2 |
90 | >Synopsis</H2 |
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94 | NAME="AEN1396" |
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 | >void <B |
106 | CLASS="FSFUNC" |
107 | >SDL_UpdateRects</B |
108 | ></CODE |
109 | >(SDL_Surface *screen, int numrects, SDL_Rect *rects);</CODE |
110 | ></P |
111 | ><P |
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116 | CLASS="REFSECT1" |
117 | ><A |
118 | NAME="AEN1402" |
119 | ></A |
120 | ><H2 |
121 | >Description</H2 |
122 | ><P |
123 | >Makes sure the given list of rectangles is updated on the given screen. |
124 | The rectangles must all be confined within the screen boundaries (no |
125 | clipping is done).</P |
126 | ><P |
127 | >This function should not be called while <TT |
128 | CLASS="PARAMETER" |
129 | ><I |
130 | >screen</I |
131 | ></TT |
132 | > is |
133 | <A |
134 | HREF="sdllocksurface.html" |
135 | >locked</A |
136 | >.</P |
137 | ><DIV |
138 | CLASS="NOTE" |
139 | ><BLOCKQUOTE |
140 | CLASS="NOTE" |
141 | ><P |
142 | ><B |
143 | >Note: </B |
144 | >It is adviced to call this function only once per frame, since each |
145 | call has some processing overhead. This is no restriction since you |
146 | can pass any number of rectangles each time.</P |
147 | ><P |
148 | >The rectangles are not automatically merged or checked for overlap. In |
149 | general, the programmer can use his knowledge about his particular |
150 | rectangles to merge them in an efficient way, to avoid overdraw.</P |
151 | ></BLOCKQUOTE |
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157 | NAME="AEN1411" |
158 | ></A |
159 | ><H2 |
160 | >See Also</H2 |
161 | ><P |
162 | ><A |
163 | HREF="sdlupdaterect.html" |
164 | ><TT |
165 | CLASS="FUNCTION" |
166 | >SDL_UpdateRect</TT |
167 | ></A |
168 | >, |
169 | <A |
170 | HREF="sdlrect.html" |
171 | ><SPAN |
172 | CLASS="STRUCTNAME" |
173 | >SDL_Rect</SPAN |
174 | ></A |
175 | >, |
176 | <A |
177 | HREF="sdlsurface.html" |
178 | ><SPAN |
179 | CLASS="STRUCTNAME" |
180 | >SDL_Surface</SPAN |
181 | ></A |
182 | >, |
183 | <A |
184 | HREF="sdllocksurface.html" |
185 | ><TT |
186 | CLASS="FUNCTION" |
187 | >SDL_LockSurface</TT |
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235 | >SDL_UpdateRect</TD |
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