Mercurial > sdl-ios-xcode
annotate docs/html/sdlmaprgba.html @ 3168:6338b7f2d024
Hi,
I have prepared a set of patches to readd WindowsCE support to SDL 1.3.
I've created a new GAPI/Rawframebuffer and a DirectDraw renderer.
Both renderers are work in progress and there are several unimplemented
cases. (Notably
RenderLine/RenderPoint/RenderFill/QueryTexturePixels/UpdateTexture and
texture blending )
Nevertheless I am successfully using these renderers together with the
SDL software renderer. (On most devices the SDL software renderer will
be much faster as there are only badly optimized vendor drivers available)
I send these patches now in this unpolished state because there seems to
be some interest in win ce and someone has to start supporting SDL 1.3
Now on to the patches:
wince_events_window_fixes.patch
fixes some wince incompatibilities and adds fullscreen support via
SHFullScreen. NOTE: This patch shouldn't have any side effects on
Windows, but I have NOT tested it on Windows, so please double-check.
This patch doesn't dependent on the following ones.
wince_renderers_system.patch
This patch does all necessary modifications to the SDL system.
- it adds the renderers to the configure system
- it adds the renderers to win32video
SDL_ceddrawrender.c
SDL_ceddrawrender.h
SDL_gapirender_c.h
SDL_gapirender.c
SDL_gapirender.h
these files add the new render drivers and should be placed in
src/video/win32
Some notes to people who want to test this:
- I have only compiled sdl with ming32ce, so the VisualC files are not
up to date
- As mingw32ce has no ddraw.h this file must be taken from the MS SDK
and modified to work with gcc
- I had to modify line 2611 in configure.in to
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lcoredll -lcommctrl -lmmtimer
-Wl,--image-base -Wl,0x10000"
otherwise GetCPinfo wouldn't link. If someone knows whats causing this
I'd be happy to hear about it.
It would be great if these patches could make their way into SVN as this
would make collaboration much much easier.
I'm out of office for the next week and therefore will be unavailable
via email.
Regards
Stefan
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 07 Jun 2009 02:44:46 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_MapRGBA</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_MapRGB" | |
17 HREF="sdlmaprgb.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GetRGB" | |
20 HREF="sdlgetrgb.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="sdlmaprgb.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="sdlgetrgb.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="SDLMAPRGBA" | |
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74 ></A |
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75 >SDL_MapRGBA</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1687" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_MapRGBA -- Map a RGBA color value to a pixel format.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1690" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1691" |
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 >Uint32 <B | |
106 CLASS="FSFUNC" | |
107 >SDL_MapRGBA</B | |
108 ></CODE | |
109 >(SDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1697" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Maps the RGBA color value to the specified pixel format and returns the | |
124 pixel value as a 32-bit int.</P | |
125 ><P | |
126 >If the format has a palette (8-bit) the index of the closest matching | |
127 color in the palette will be returned.</P | |
128 ><P | |
129 >If the specified pixel format has no alpha component the alpha value | |
130 will be ignored (as it will be in formats with a palette).</P | |
131 ></DIV | |
132 ><DIV | |
133 CLASS="REFSECT1" | |
134 ><A | |
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135 NAME="AEN1702" |
0 | 136 ></A |
137 ><H2 | |
138 >Return Value</H2 | |
139 ><P | |
140 >A pixel value best approximating the given RGBA color value for a given | |
141 pixel format. If the pixel format bpp (color depth) is less than 32-bpp | |
142 then the unused upper bits of the return value can safely be ignored | |
143 (e.g., with a 16-bpp format the return value can be assigned to a | |
144 <SPAN | |
145 CLASS="TYPE" | |
146 >Uint16</SPAN | |
147 >, and similarly a <SPAN | |
148 CLASS="TYPE" | |
149 >Uint8</SPAN | |
150 > for an 8-bpp | |
151 format).</P | |
152 ></DIV | |
153 ><DIV | |
154 CLASS="REFSECT1" | |
155 ><A | |
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156 NAME="AEN1707" |
0 | 157 ></A |
158 ><H2 | |
159 >See Also</H2 | |
160 ><P | |
161 ><A | |
162 HREF="sdlgetrgb.html" | |
163 >SDL_GetRGB</A | |
164 >, | |
165 <A | |
166 HREF="sdlgetrgba.html" | |
167 >SDL_GetRGBA</A | |
168 >, | |
169 <A | |
170 HREF="sdlmaprgb.html" | |
171 >SDL_MapRGB</A | |
172 >, | |
173 <A | |
174 HREF="sdlpixelformat.html" | |
175 >SDL_PixelFormat</A | |
176 ></P | |
177 ></DIV | |
178 ><DIV | |
179 CLASS="NAVFOOTER" | |
180 ><HR | |
181 ALIGN="LEFT" | |
182 WIDTH="100%"><TABLE | |
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183 SUMMARY="Footer navigation table" |
0 | 184 WIDTH="100%" |
185 BORDER="0" | |
186 CELLPADDING="0" | |
187 CELLSPACING="0" | |
188 ><TR | |
189 ><TD | |
190 WIDTH="33%" | |
191 ALIGN="left" | |
192 VALIGN="top" | |
193 ><A | |
194 HREF="sdlmaprgb.html" | |
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195 ACCESSKEY="P" |
0 | 196 >Prev</A |
197 ></TD | |
198 ><TD | |
199 WIDTH="34%" | |
200 ALIGN="center" | |
201 VALIGN="top" | |
202 ><A | |
203 HREF="index.html" | |
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204 ACCESSKEY="H" |
0 | 205 >Home</A |
206 ></TD | |
207 ><TD | |
208 WIDTH="33%" | |
209 ALIGN="right" | |
210 VALIGN="top" | |
211 ><A | |
212 HREF="sdlgetrgb.html" | |
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213 ACCESSKEY="N" |
0 | 214 >Next</A |
215 ></TD | |
216 ></TR | |
217 ><TR | |
218 ><TD | |
219 WIDTH="33%" | |
220 ALIGN="left" | |
221 VALIGN="top" | |
222 >SDL_MapRGB</TD | |
223 ><TD | |
224 WIDTH="34%" | |
225 ALIGN="center" | |
226 VALIGN="top" | |
227 ><A | |
228 HREF="video.html" | |
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229 ACCESSKEY="U" |
0 | 230 >Up</A |
231 ></TD | |
232 ><TD | |
233 WIDTH="33%" | |
234 ALIGN="right" | |
235 VALIGN="top" | |
236 >SDL_GetRGB</TD | |
237 ></TR | |
238 ></TABLE | |
239 ></DIV | |
240 ></BODY | |
241 ></HTML | |
242 > |