pset422s.c

来自「linux嵌入式开发程序」· C语言 代码 · 共 26 行

/*===========================================================================
        2D Graphics Library
        ALL RIGHTS RESERVED, COPYRIGHT (C) FUJITSU LIMITED 1993-2002
        LICENSED MATERIAL - PROGRAM PROPERTY OF FUJITSU LIMITED
 ===========================================================================*/

#include "gl.h"
#include "defhook.h"

int
_GL_psetYUV422_single(GL_WP *gp)
{
    register DWORD *adr ;

    adr  = _AddAdr(gp->hwork.VRAMadr[gp->hwork.page][0],gp->pnt.offs) ;
    if(((long)adr&3)!=0){
        adr = (DWORD *)((long)adr-((long)adr&3)) ;
        *adr = *adr & 0xff000000 | gp->pnt.color & 0x00ffffff ;
    } else {
        *adr = *adr & 0x0000ff00 | gp->pnt.color & 0xffff00ff ;
    }
    return GL_Ok ;
}