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Date: Wed, 24 Nov 2004 01:25:48 +0100 From: Stephane Marchesin Subject: Re: [SDL] Problem compiling SDL 1.2.7 - there is a bug that was introduced in the kernel headers for 2.6.9 which is fixed in 2.6.10. This bug *will* byte when compiling the cdrom subsystem. A patch that works around this bug is attached. Note that users affected are not those running 2.6.9, but those using the 2.6.9 kernel headers for their system (i.e. whose libc is built against 2.6.9 headers).
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Nov 2004 14:45:08 +0000
parents e5bc29de3f0a
children 546f7c1eb755
rev   line source
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e5bc29de3f0a Updated from the SDL Documentation Project
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1 .TH "SDL_MapRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_MapRGBA\- Map a RGBA color value to a pixel format\&.
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4 .SH "SYNOPSIS"
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5 .PP
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6 \fB#include "SDL\&.h"
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7 .sp
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8 \fBUint32 \fBSDL_MapRGBA\fP\fR(\fBSDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a\fR);
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9 .SH "DESCRIPTION"
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10 .PP
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11 Maps the RGBA color value to the specified pixel format and returns the pixel value as a 32-bit int\&.
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12 .PP
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13 If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned\&.
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14 .PP
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15 If the specified pixel format has no alpha component the alpha value will be ignored (as it will be in formats with a palette)\&.
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16 .SH "RETURN VALUE"
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17 .PP
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18 A pixel value best approximating the given RGBA color value for a given pixel format\&. If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e\&.g\&., with a 16-bpp format the return value can be assigned to a \fBUint16\fP, and similarly a \fBUint8\fP for an 8-bpp format)\&.
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19 .SH "SEE ALSO"
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20 .PP
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21 \fISDL_GetRGB\fR, \fISDL_GetRGBA\fR, \fISDL_MapRGB\fR, \fISDL_PixelFormat\fR
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22 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01