waves.c
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/**************************************************************************
* *
* Copyright (C) 1995, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
*************************************************************************/
#include <ultra64.h>
#include "stress.h"
/*
* make_waves - animate water texture by changing SL,TL
*/
static int cur_wave_top = 0;
static int cur_wave_bot = 0;
void
make_waves(Dynamic * dynamicp)
{
int wst = 2;
int wsb = 1;
if (cur_wave_top > ((64 << G_TEXTURE_IMAGE_FRAC) - wst))
cur_wave_top = 0;
if (cur_wave_bot > ((128 << G_TEXTURE_IMAGE_FRAC) - wsb))
cur_wave_bot = 0;
/*
* pool water
*/
gDPSetTileSize(dynamicp->ani_water, G_TX_RENDERTILE, cur_wave_top, 0,
(64 << G_TEXTURE_IMAGE_FRAC), (64 << G_TEXTURE_IMAGE_FRAC));
gSPEndDisplayList(dynamicp->ani_water + 1);
/*
* pool bottom
*/
gDPSetTileSize(dynamicp->ani_water_refl, G_TX_RENDERTILE, cur_wave_bot, 0,
(128 << G_TEXTURE_IMAGE_FRAC), (64 << G_TEXTURE_IMAGE_FRAC));
gSPEndDisplayList(dynamicp->ani_water_refl + 1);
cur_wave_top += wst;
cur_wave_bot += wsb;
}