846 lines
15 KiB
C
846 lines
15 KiB
C
/*
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* (c) Copyright 1993, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <math.h>
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#include <time.h>
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#include <sys\types.h>
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#include <sys\timeb.h>
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#include <stdlib.h>
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#include <ddraw.h>
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#include "tk.h"
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#pragma warning(disable:4244)
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GLenum doubleBuffer, directRender;
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LPDIRECTDRAWSURFACE pddsTex;
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DDSURFACEDESC ddsdTex;
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#define WWIDTH 300
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#define WHEIGHT 300
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#define TWIDTH 256
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#define THEIGHT 256
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#define TRAIL_X 1
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#define TRAIL_Y 1
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#define TRAIL_WIDTH (TWIDTH-2*TRAIL_X)
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#define TRAIL_HEIGHT (THEIGHT-2*TRAIL_Y)
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#define TRAIL_SPEED (TRAIL_WIDTH/16)
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#define TRAIL_MIN_SPEED 2
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#define TRAIL_RAND_SPEED() ((rand() % TRAIL_SPEED)+TRAIL_MIN_SPEED)
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#define TRAIL 16
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#define NEXT_TRAIL_IDX(idx) (((idx)+1) & (TRAIL-1))
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POINT trail[TRAIL][2];
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POINT vel[2];
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int trail_idx = 0;
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double trail_hue = 0.0;
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#define HUE_STEP 1.0
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#define NEXT_TRAIL_HUE(hue) \
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((hue) < (360.0-HUE_STEP) ? (hue)+HUE_STEP : (hue)+HUE_STEP-360.0)
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float *minFilter, *magFilter, *sWrapMode, *tWrapMode;
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float decal[] = {GL_DECAL};
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float modulate[] = {GL_MODULATE};
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float repeat[] = {GL_REPEAT};
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float clamp[] = {GL_CLAMP};
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float nr[] = {GL_NEAREST};
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float ln[] = {GL_LINEAR};
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float nr_mipmap_nr[] = {GL_NEAREST_MIPMAP_NEAREST};
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float nr_mipmap_ln[] = {GL_NEAREST_MIPMAP_LINEAR};
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float ln_mipmap_nr[] = {GL_LINEAR_MIPMAP_NEAREST};
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float ln_mipmap_ln[] = {GL_LINEAR_MIPMAP_LINEAR};
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GLint sphereMap[] = {GL_SPHERE_MAP};
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GLboolean displayFrameRate = GL_FALSE;
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GLboolean animate = GL_TRUE;
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GLboolean spin = GL_TRUE;
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GLboolean showSphere = GL_FALSE;
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GLint frames, curFrame = 0, nextFrame = 0;
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GLint frameCount = 0;
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GLenum doDither = GL_TRUE;
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GLenum doSphere = GL_FALSE;
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float xRotation = 0.0, yRotation = 0.0, zTranslate = -3.125;
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GLint cube;
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float c[6][4][3] = {
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{
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{
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1.0, 1.0, -1.0
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},
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{
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-1.0, 1.0, -1.0
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},
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{
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-1.0, -1.0, -1.0
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},
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{
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1.0, -1.0, -1.0
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}
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},
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{
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{
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1.0, 1.0, 1.0
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},
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{
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1.0, 1.0, -1.0
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},
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{
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1.0, -1.0, -1.0
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},
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{
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1.0, -1.0, 1.0
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}
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},
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{
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{
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-1.0, 1.0, 1.0
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},
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{
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1.0, 1.0, 1.0
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},
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{
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1.0, -1.0, 1.0
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},
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{
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-1.0, -1.0, 1.0
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}
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},
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{
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{
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-1.0, 1.0, -1.0
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},
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{
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-1.0, 1.0, 1.0
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},
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{
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-1.0, -1.0, 1.0
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},
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{
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-1.0, -1.0, -1.0
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}
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},
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{
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{
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-1.0, 1.0, 1.0
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},
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{
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-1.0, 1.0, -1.0
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},
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{
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1.0, 1.0, -1.0
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},
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{
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1.0, 1.0, 1.0
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}
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},
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{
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{
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-1.0, -1.0, -1.0
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},
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{
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-1.0, -1.0, 1.0
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},
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{
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1.0, -1.0, 1.0
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},
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{
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1.0, -1.0, -1.0
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}
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}
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};
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static float n[6][3] = {
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{
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0.0, 0.0, -1.0
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},
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{
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1.0, 0.0, 0.0
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},
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{
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0.0, 0.0, 1.0
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},
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{
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-1.0, 0.0, 0.0
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},
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{
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0.0, 1.0, 0.0
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},
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{
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0.0, -1.0, 0.0
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}
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};
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#if 0
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static float t[6][4][2] = {
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{
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{
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1.1, 1.1
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},
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{
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-0.1, 1.1
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},
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{
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-0.1, -0.1
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},
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{
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1.1, -0.1
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}
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},
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{
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{
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1.1, 1.1
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},
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{
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-0.1, 1.1
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},
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{
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-0.1, -0.1
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},
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{
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1.1, -0.1
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}
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},
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{
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{
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-0.1, 1.1
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},
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{
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1.1, 1.1
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},
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{
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1.1, -0.1
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},
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{
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-0.1, -0.1
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}
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},
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{
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{
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1.1, 1.1
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},
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{
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-0.1, 1.1
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},
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{
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-0.1, -0.1
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},
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{
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1.1, -0.1
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}
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},
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{
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{
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1.1, 1.1
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},
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{
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-0.1, 1.1
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},
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{
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-0.1, -0.1
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},
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{
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1.1, -0.1
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}
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},
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{
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{
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1.1, 1.1
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},
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{
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-0.1, 1.1
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},
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{
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-0.1, -0.1
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},
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{
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1.1, -0.1
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}
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},
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};
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#else
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static float t[6][4][2] = {
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{
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{
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1.0, 1.0
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},
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{
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-0.0, 1.0
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},
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{
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-0.0, -0.0
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},
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{
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1.0, -0.0
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}
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},
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{
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{
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1.0, 1.0
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},
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{
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-0.0, 1.0
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},
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{
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-0.0, -0.0
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},
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{
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1.0, -0.0
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}
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},
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{
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{
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-0.0, 1.0
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},
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{
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1.0, 1.0
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},
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{
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1.0, -0.0
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},
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{
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-0.0, -0.0
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}
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},
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{
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{
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1.0, 1.0
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},
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{
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-0.0, 1.0
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},
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{
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-0.0, -0.0
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},
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{
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1.0, -0.0
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}
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},
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{
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{
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1.0, 1.0
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},
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{
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-0.0, 1.0
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},
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{
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-0.0, -0.0
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},
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{
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1.0, -0.0
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}
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},
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{
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{
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1.0, 1.0
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},
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{
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-0.0, 1.0
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},
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{
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-0.0, -0.0
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},
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{
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1.0, -0.0
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}
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},
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};
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#endif
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static void Animate(void);
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void SolidSphere (GLdouble radius)
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{
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GLUquadricObj *quadObj;
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static GLuint displayList = 0;
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if (displayList == 0) {
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displayList = glGenLists(1);
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glNewList(displayList, GL_COMPILE_AND_EXECUTE);
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quadObj = gluNewQuadric ();
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gluQuadricDrawStyle (quadObj, GLU_FILL);
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gluQuadricNormals (quadObj, GLU_SMOOTH);
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gluQuadricTexture (quadObj, GL_TRUE);
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gluSphere (quadObj, radius, 16, 16);
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glEndList();
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}
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else {
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glCallList(displayList);
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}
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}
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COLORREF HueToRgb(double hue)
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{
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int hex;
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double frac;
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BYTE v1, v2, v3;
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hue /= 60.0;
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hex = (int)hue;
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frac = hue-hex;
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v1 = 0;
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v2 = (BYTE)((1-frac)*255);
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v3 = (BYTE)(frac*255);
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switch(hex)
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{
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case 0:
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return RGB(255, v3, v1);
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case 1:
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return RGB(v2, 255, v1);
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case 2:
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return RGB(v1, 255, v3);
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case 3:
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return RGB(v1, v2, 255);
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case 4:
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return RGB(v3, v1, 255);
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default:
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return RGB(255, v1, v2);
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}
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}
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static void BuildCube(void)
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{
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GLint i;
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glNewList(cube, GL_COMPILE);
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for (i = 0; i < 6; i++) {
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glBegin(GL_POLYGON);
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glNormal3fv(n[i]); glTexCoord2fv(t[i][0]); glVertex3fv(c[i][0]);
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glNormal3fv(n[i]); glTexCoord2fv(t[i][1]); glVertex3fv(c[i][1]);
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glNormal3fv(n[i]); glTexCoord2fv(t[i][2]); glVertex3fv(c[i][2]);
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glNormal3fv(n[i]); glTexCoord2fv(t[i][3]); glVertex3fv(c[i][3]);
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glEnd();
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}
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glEndList();
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}
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static void BuildLists(void)
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{
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cube = glGenLists(1);
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BuildCube();
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}
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BOOL WINAPI texCallback(LPDDSURFACEDESC pddsd, LPVOID pv)
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{
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if (pddsd->ddpfPixelFormat.dwFlags == DDPF_RGB)
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{
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ddsdTex = *pddsd;
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return FALSE;
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}
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else
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{
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return TRUE;
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}
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}
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void CreateTex(void)
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{
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LPDIRECTDRAW pdd;
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HDC hdc;
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if (!wglEnumTextureFormats(texCallback, NULL))
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{
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printf("wglEnumTextureFormats failed, %d\n", GetLastError());
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tkQuit();
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}
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if (DirectDrawCreate(NULL, &pdd, NULL) != DD_OK)
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{
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tkQuit();
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}
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if (pdd->lpVtbl->SetCooperativeLevel(pdd, NULL, DDSCL_NORMAL) != DD_OK)
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{
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tkQuit();
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}
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ddsdTex.dwFlags |= DDSD_WIDTH | DDSD_HEIGHT;
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ddsdTex.dwWidth = TWIDTH;
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ddsdTex.dwHeight = THEIGHT;
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ddsdTex.ddsCaps.dwCaps &= ~DDSCAPS_MIPMAP;
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if (pdd->lpVtbl->CreateSurface(pdd, &ddsdTex, &pddsTex, NULL) != DD_OK)
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{
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tkQuit();
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}
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if (pddsTex->lpVtbl->GetDC(pddsTex, &hdc) != DD_OK)
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{
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tkQuit();
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}
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SelectObject(hdc, GetStockObject(BLACK_BRUSH));
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SelectObject(hdc, GetStockObject(WHITE_PEN));
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Rectangle(hdc, 0, 0, TWIDTH, THEIGHT);
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pddsTex->lpVtbl->ReleaseDC(pddsTex, hdc);
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}
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static void Init(void)
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{
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CreateTex();
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srand(time(NULL));
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trail[0][0].x = (rand() % TRAIL_WIDTH)+TRAIL_X;
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trail[0][0].y = (rand() % TRAIL_HEIGHT)+TRAIL_Y;
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trail[0][1].x = (rand() % TRAIL_WIDTH)+TRAIL_X;
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trail[0][1].y = (rand() % TRAIL_HEIGHT)+TRAIL_Y;
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vel[0].x = TRAIL_RAND_SPEED();
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vel[0].y = TRAIL_RAND_SPEED();
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vel[1].x = TRAIL_RAND_SPEED();
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vel[1].y = TRAIL_RAND_SPEED();
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wglBindDirectDrawTexture(pddsTex);
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, decal);
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glEnable(GL_TEXTURE_2D);
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glFrontFace(GL_CCW);
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glCullFace(GL_FRONT);
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glEnable(GL_CULL_FACE);
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BuildLists();
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glClearColor(0.0, 0.0, 0.0, 0.0);
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magFilter = nr;
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minFilter = nr;
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sWrapMode = repeat;
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tWrapMode = repeat;
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glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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}
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static void Reshape(int width, int height)
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{
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glViewport(0, 0, (GLint)width, (GLint)height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(90.0, 1.0, 0.01, 1000);
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glMatrixMode(GL_MODELVIEW);
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}
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static GLenum Key(int key, GLenum mask)
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{
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switch (key) {
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case TK_ESCAPE:
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tkQuit();
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case TK_SPACE:
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if (animate)
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{
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tkIdleFunc(NULL);
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}
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else
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{
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tkIdleFunc(Animate);
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}
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animate = !animate;
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break;
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case TK_n:
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spin = !spin;
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break;
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case TK_p:
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showSphere = !showSphere;
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break;
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|
|
|
case TK_LEFT:
|
|
yRotation -= 0.5;
|
|
break;
|
|
case TK_RIGHT:
|
|
yRotation += 0.5;
|
|
break;
|
|
case TK_UP:
|
|
xRotation -= 0.5;
|
|
break;
|
|
case TK_DOWN:
|
|
xRotation += 0.5;
|
|
break;
|
|
case TK_f:
|
|
displayFrameRate = !displayFrameRate;
|
|
frameCount = 0;
|
|
break;
|
|
case TK_d:
|
|
doDither = !doDither;
|
|
(doDither) ? glEnable(GL_DITHER) : glDisable(GL_DITHER);
|
|
break;
|
|
case TK_T:
|
|
zTranslate += 0.25;
|
|
break;
|
|
case TK_t:
|
|
zTranslate -= 0.25;
|
|
break;
|
|
|
|
case TK_s:
|
|
doSphere = !doSphere;
|
|
if (doSphere) {
|
|
glTexGeniv(GL_S, GL_TEXTURE_GEN_MODE, sphereMap);
|
|
glTexGeniv(GL_T, GL_TEXTURE_GEN_MODE, sphereMap);
|
|
glEnable(GL_TEXTURE_GEN_S);
|
|
glEnable(GL_TEXTURE_GEN_T);
|
|
} else {
|
|
glDisable(GL_TEXTURE_GEN_S);
|
|
glDisable(GL_TEXTURE_GEN_T);
|
|
}
|
|
break;
|
|
|
|
case TK_0:
|
|
magFilter = nr;
|
|
break;
|
|
case TK_1:
|
|
magFilter = ln;
|
|
break;
|
|
case TK_2:
|
|
minFilter = nr;
|
|
break;
|
|
case TK_3:
|
|
minFilter = ln;
|
|
break;
|
|
case TK_4:
|
|
minFilter = nr_mipmap_nr;
|
|
break;
|
|
case TK_5:
|
|
minFilter = nr_mipmap_ln;
|
|
break;
|
|
case TK_6:
|
|
minFilter = ln_mipmap_nr;
|
|
break;
|
|
case TK_7:
|
|
minFilter = ln_mipmap_ln;
|
|
break;
|
|
|
|
default:
|
|
return GL_FALSE;
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
static void Draw(void)
|
|
{
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, sWrapMode);
|
|
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, tWrapMode);
|
|
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, magFilter);
|
|
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minFilter);
|
|
|
|
glPushMatrix();
|
|
|
|
glTranslatef(0.0, 0.0, zTranslate);
|
|
glRotatef(xRotation, 1, 0, 0);
|
|
glRotatef(yRotation, 0, 1, 0);
|
|
if (showSphere)
|
|
{
|
|
SolidSphere(1);
|
|
}
|
|
else
|
|
{
|
|
glCallList(cube);
|
|
}
|
|
|
|
glPopMatrix();
|
|
|
|
glFlush();
|
|
|
|
if (doubleBuffer) {
|
|
tkSwapBuffers();
|
|
}
|
|
}
|
|
|
|
static GLenum Args(int argc, char **argv)
|
|
{
|
|
GLint i;
|
|
|
|
doubleBuffer = GL_FALSE;
|
|
directRender = GL_FALSE;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
if (strcmp(argv[i], "-sb") == 0) {
|
|
doubleBuffer = GL_FALSE;
|
|
} else if (strcmp(argv[i], "-db") == 0) {
|
|
doubleBuffer = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-dr") == 0) {
|
|
directRender = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-ir") == 0) {
|
|
directRender = GL_FALSE;
|
|
} else {
|
|
printf("%s (Bad option).\n", argv[i]);
|
|
return GL_FALSE;
|
|
}
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
void UpdateTex(void)
|
|
{
|
|
HDC hdc;
|
|
int i;
|
|
int idx;
|
|
HPEN hpen;
|
|
|
|
if (pddsTex->lpVtbl->GetDC(pddsTex, &hdc) != DD_OK)
|
|
{
|
|
tkQuit();
|
|
}
|
|
|
|
idx = NEXT_TRAIL_IDX(trail_idx);
|
|
|
|
// Erase oldest trail line
|
|
SelectObject(hdc, GetStockObject(BLACK_PEN));
|
|
MoveToEx(hdc, trail[idx][0].x, trail[idx][0].y, NULL);
|
|
LineTo(hdc, trail[idx][1].x, trail[idx][1].y);
|
|
|
|
// Update points
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
trail[idx][i].x = trail[trail_idx][i].x+vel[i].x;
|
|
if (trail[idx][i].x < TRAIL_X)
|
|
{
|
|
trail[idx][i].x = TRAIL_X;
|
|
vel[i].x = TRAIL_RAND_SPEED();
|
|
}
|
|
else if (trail[idx][i].x >= TRAIL_X+TRAIL_WIDTH)
|
|
{
|
|
trail[idx][i].x = TRAIL_X+TRAIL_WIDTH-1;
|
|
vel[i].x = -TRAIL_RAND_SPEED();
|
|
}
|
|
|
|
trail[idx][i].y = trail[trail_idx][i].y+vel[i].y;
|
|
if (trail[idx][i].y < TRAIL_Y)
|
|
{
|
|
trail[idx][i].y = TRAIL_Y;
|
|
vel[i].y = TRAIL_RAND_SPEED();
|
|
}
|
|
else if (trail[idx][i].y >= TRAIL_Y+TRAIL_HEIGHT)
|
|
{
|
|
trail[idx][i].y = TRAIL_Y+TRAIL_HEIGHT-1;
|
|
vel[i].y = -TRAIL_RAND_SPEED();
|
|
}
|
|
}
|
|
|
|
// Draw newest line
|
|
hpen = CreatePen(PS_SOLID, 0, HueToRgb(trail_hue));
|
|
SelectObject(hdc, hpen);
|
|
MoveToEx(hdc, trail[idx][0].x, trail[idx][0].y, NULL);
|
|
LineTo(hdc, trail[idx][1].x, trail[idx][1].y);
|
|
SelectObject(hdc, GetStockObject(WHITE_PEN));
|
|
DeleteObject(hpen);
|
|
|
|
trail_idx = idx;
|
|
trail_hue = NEXT_TRAIL_HUE(trail_hue);
|
|
|
|
pddsTex->lpVtbl->ReleaseDC(pddsTex, hdc);
|
|
}
|
|
|
|
static void Animate(void)
|
|
{
|
|
static struct _timeb thisTime, baseTime;
|
|
double elapsed, frameRate, deltat;
|
|
|
|
if (curFrame++ >= 10) {
|
|
if( !frameCount ) {
|
|
_ftime( &baseTime );
|
|
}
|
|
else {
|
|
if( displayFrameRate ) {
|
|
_ftime( &thisTime );
|
|
elapsed = thisTime.time + thisTime.millitm/1000.0 -
|
|
(baseTime.time + baseTime.millitm/1000.0);
|
|
if( elapsed == 0.0 )
|
|
printf( "Frame rate = unknown\n" );
|
|
else {
|
|
frameRate = frameCount / elapsed;
|
|
printf( "Frame rate = %5.2f fps\n", frameRate );
|
|
}
|
|
}
|
|
}
|
|
frameCount += 10;
|
|
|
|
curFrame = 0;
|
|
}
|
|
|
|
UpdateTex();
|
|
|
|
Draw();
|
|
|
|
if (spin)
|
|
{
|
|
xRotation += 10.0;
|
|
yRotation += 10.0;
|
|
}
|
|
}
|
|
|
|
void __cdecl main(int argc, char **argv)
|
|
{
|
|
GLenum type;
|
|
|
|
if (Args(argc, argv) == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
tkInitPosition(0, 0, WWIDTH, WHEIGHT);
|
|
|
|
type = TK_RGB;
|
|
type |= (doubleBuffer) ? TK_DOUBLE : TK_SINGLE;
|
|
type |= (directRender) ? TK_DIRECT : TK_INDIRECT;
|
|
tkInitDisplayMode(type);
|
|
|
|
if (tkInitWindow("Texture Test") == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
Init();
|
|
|
|
tkExposeFunc(Reshape);
|
|
tkReshapeFunc(Reshape);
|
|
tkKeyDownFunc(Key);
|
|
tkDisplayFunc(Draw);
|
|
if (animate)
|
|
{
|
|
tkIdleFunc(Animate);
|
|
}
|
|
tkExec();
|
|
}
|