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- /*
- * Copyright 1992, 1993, 1994, Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
- * the contents of this file may not be disclosed to third parties, copied or
- * duplicated in any form, in whole or in part, without the prior written
- * permission of Silicon Graphics, Inc.
- *
- * RESTRICTED RIGHTS LEGEND:
- * Use, duplication or disclosure by the Government is subject to restrictions
- * as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
- * and Computer Software clause at DFARS 252.227-7013, and/or in similar or
- * successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
- * rights reserved under the Copyright Laws of the United States.
- */
- #include <stdio.h>
- #include "gl.h"
-
- unsigned long *longimagedata();
-
- float texture_props[] = {TX_MINFILTER,TX_BILINEAR,TX_MAGFILTER,TX_BILINEAR,0};
- float env_props[] = {TV_NULL}; /* use default texture environment properties */
-
- /*
- * texinit reads in, defines, and binds the texture. It also
- * defines the texture environment, and it sets up and turns on
- * the texture generation.
- *
- */
-
- void
- texinit(void)
- {
- long *image; /* the image to be used as the texture */
- long width, height;
- /* in T, the z-component C should be such that C * Max Amp is about 0.5,
- with D also 0.5, which makes the equation work between 0.0 and 1.0
-
- For a mathematically defined sea, Max Amp is 0.5 tmies the sum of all wave term amplitudes */
- static float t_params[4] = { 0., 0., 0.0005, 0.}; /* plane for T-coordinates */
- /* in S, all experiments are valid */
- static float s_params[4] = { 0.0005, 0., 0., 0.}; /* plane for S-coordinates */
-
-
- image = (long *) longimagedata("sea.rgb", &width, &height);
- if (image == NULL) {
- fprintf(stderr, "Cannot find file sea.rgb -- texturing disabled\n");
- return;
- }
- texdef2d(1,4,width,height,(const unsigned int *) image,1,texture_props);
- tevdef(1,1,env_props);
- tevbind(TV_ENV0,1);
- texgen(TX_T, TG_CONTOUR, t_params);
- texgen(TX_S, TG_CONTOUR, s_params);
- }
-
- #include "gl.h"
- #include "device.h"
- #include "gl/image.h"
-
- struct picture {
- unsigned long image[16384];
- } icommon_ ;
-
- void *longimagedata_(name, width, height)
- char *name;
- long *width, *height;
- {
- unsigned long *longimagedata();
- unsigned long *temp;
- register int i;
-
- temp = longimagedata(name,width,height);
- if (!temp) return NULL;
- for (i = 0; i < 16384; i++)
- icommon_.image[i] = temp[i];
- }
-
- unsigned long *longimagedata(name, width, height)
- char *name;
- long *width, *height;
- {
- unsigned long *base, *lptr;
- short *rbuf, *gbuf, *bbuf, *abuf;
- IMAGE *image;
- int y;
-
- image = iopen(name,"r");
- if(!image) {
- return NULL;
- }
- *width = image->xsize;
- *height = image->ysize;
- base = (unsigned long *)malloc(image->xsize*image->ysize*sizeof(unsigned long));
- rbuf = (short *)malloc(image->xsize*sizeof(short));
- gbuf = (short *)malloc(image->xsize*sizeof(short));
- bbuf = (short *)malloc(image->xsize*sizeof(short));
- abuf = (short *)malloc(image->xsize*sizeof(short));
- if(!base || !rbuf || !gbuf || !bbuf) {
- fprintf(stderr,"longimagedata: can't malloc enough memory\n");
- exit(1);
- }
- lptr = base;
- for(y=0; y<image->ysize; y++) {
- if(image->zsize>=4) {
- getrow(image,rbuf,y,0);
- getrow(image,gbuf,y,1);
- getrow(image,bbuf,y,2);
- getrow(image,abuf,y,3);
- rgbatocpack(rbuf,gbuf,bbuf,abuf,lptr,image->xsize);
- lptr += image->xsize;
- } else if(image->zsize==3) {
- getrow(image,rbuf,y,0);
- getrow(image,gbuf,y,1);
- getrow(image,bbuf,y,2);
- rgbtocpack(rbuf,gbuf,bbuf,lptr,image->xsize);
- lptr += image->xsize;
- } else {
- getrow(image,rbuf,y,0);
- bwtocpack(rbuf,lptr,image->xsize);
- lptr += image->xsize;
- }
- }
- iclose(image);
- free(rbuf);
- free(gbuf);
- free(bbuf);
- free(abuf);
- return base;
- }
-
-
- bwtocpack(b,l,n)
- register unsigned short *b;
- register unsigned long *l;
- register int n;
- {
- while(n>=8) {
- l[0] = 0x00010101*b[0];
- l[1] = 0x00010101*b[1];
- l[2] = 0x00010101*b[2];
- l[3] = 0x00010101*b[3];
- l[4] = 0x00010101*b[4];
- l[5] = 0x00010101*b[5];
- l[6] = 0x00010101*b[6];
- l[7] = 0x00010101*b[7];
- l += 8;
- b += 8;
- n -= 8;
- }
- while(n--)
- *l++ = 0x00010101*(*b++);
- }
-
- rgbtocpack(r,g,b,l,n)
- register unsigned short *r, *g, *b;
- register unsigned long *l;
- register int n;
- {
- while(n>=8) {
- l[0] = r[0] | (g[0]<<8) | (b[0]<<16);
- l[1] = r[1] | (g[1]<<8) | (b[1]<<16);
- l[2] = r[2] | (g[2]<<8) | (b[2]<<16);
- l[3] = r[3] | (g[3]<<8) | (b[3]<<16);
- l[4] = r[4] | (g[4]<<8) | (b[4]<<16);
- l[5] = r[5] | (g[5]<<8) | (b[5]<<16);
- l[6] = r[6] | (g[6]<<8) | (b[6]<<16);
- l[7] = r[7] | (g[7]<<8) | (b[7]<<16);
- l += 8;
- r += 8;
- g += 8;
- b += 8;
- n -= 8;
- }
- while(n--)
- *l++ = *r++ | ((*g++)<<8) | ((*b++)<<16);
- }
-
- rgbatocpack(r,g,b,a,l,n)
- register unsigned short *r, *g, *b, *a;
- register unsigned long *l;
- register int n;
- {
- while(n>=8) {
- l[0] = r[0] | (g[0]<<8) | (b[0]<<16) | (a[0]<<24);
- l[1] = r[1] | (g[1]<<8) | (b[1]<<16) | (a[1]<<24);
- l[2] = r[2] | (g[2]<<8) | (b[2]<<16) | (a[2]<<24);
- l[3] = r[3] | (g[3]<<8) | (b[3]<<16) | (a[3]<<24);
- l[4] = r[4] | (g[4]<<8) | (b[4]<<16) | (a[4]<<24);
- l[5] = r[5] | (g[5]<<8) | (b[5]<<16) | (a[5]<<24);
- l[6] = r[6] | (g[6]<<8) | (b[6]<<16) | (a[6]<<24);
- l[7] = r[7] | (g[7]<<8) | (b[7]<<16) | (a[7]<<24);
- l += 8;
- r += 8;
- g += 8;
- b += 8;
- a += 8;
- n -= 8;
- }
- while(n--)
- *l++ = *r++ | ((*g++)<<8) | ((*b++)<<16) | ((*a++)<<24);
- }
-
-