mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2025-12-24 21:50:12 +01:00
lots of clean-up, added d/s keys
This commit is contained in:
Brian Paul
parent
13811376c9
commit
7a6bb1bb82
1 changed files with 47 additions and 111 deletions
|
|
@ -1,4 +1,4 @@
|
|||
/* $Id: reflect.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
|
||||
/* $Id: reflect.c,v 1.2 2000/04/12 01:08:30 brianp Exp $ */
|
||||
|
||||
/*
|
||||
* Demo of a reflective, texture-mapped surface with OpenGL.
|
||||
|
|
@ -20,70 +20,40 @@
|
|||
*/
|
||||
|
||||
/*
|
||||
* Dirk Reiners (reiners@igd.fhg.de) made some modifications to this code.
|
||||
*
|
||||
* August 1996 - A few optimizations by Brian
|
||||
* Authors:
|
||||
* Brian Paul
|
||||
* Dirk Reiners (reiners@igd.fhg.de) made some modifications to this code.
|
||||
* Mark Kilgard (April 1997)
|
||||
* Brian Paul (April 2000 - added keyboard d/s options)
|
||||
*/
|
||||
|
||||
/*
|
||||
* April, 1997 - Added Mark Kilgard's changes.
|
||||
*/
|
||||
|
||||
/*
|
||||
* $Log: reflect.c,v $
|
||||
* Revision 1.1 1999/08/19 00:55:40 jtg
|
||||
* Initial revision
|
||||
*
|
||||
* Revision 3.4 1999/03/28 18:22:05 brianp
|
||||
* minor clean-up
|
||||
*
|
||||
* Revision 3.3 1998/11/22 02:54:29 brianp
|
||||
* only draw one stack for gluCylinders
|
||||
*
|
||||
* Revision 3.2 1998/11/19 02:53:48 brianp
|
||||
* changed texture image and background color
|
||||
*
|
||||
* Revision 3.1 1998/11/05 04:34:04 brianp
|
||||
* moved image files to ../images/ directory
|
||||
*
|
||||
* Revision 3.0 1998/02/14 18:42:29 brianp
|
||||
* initial rev
|
||||
*
|
||||
*/
|
||||
|
||||
|
||||
#define USE_ZBUFFER
|
||||
|
||||
|
||||
/* OK, without hardware support this is overkill. */
|
||||
#define USE_TEXTURE
|
||||
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include "GL/glut.h"
|
||||
|
||||
#include "../util/readtex.c" /* a hack, I know */
|
||||
#include "../util/showbuffer.c"
|
||||
#include "../util/readtex.c"
|
||||
|
||||
|
||||
#define DEG2RAD (3.14159/180.0)
|
||||
|
||||
|
||||
#define TABLE_TEXTURE "../images/tile.rgb"
|
||||
|
||||
static int ImgWidth, ImgHeight;
|
||||
static GLint ImgWidth, ImgHeight;
|
||||
static GLenum ImgFormat;
|
||||
static GLubyte *Image = NULL;
|
||||
|
||||
#define MAX_OBJECTS 2
|
||||
|
||||
static GLint table_list;
|
||||
static GLint objects_list[MAX_OBJECTS];
|
||||
|
||||
|
||||
static GLfloat xrot, yrot;
|
||||
static GLfloat spin;
|
||||
|
||||
static GLint Width = 400, Height = 300;
|
||||
static GLenum ShowBuffer = GL_NONE;
|
||||
|
||||
|
||||
|
||||
static void make_table( void )
|
||||
|
|
@ -146,16 +116,11 @@ static void make_objects( void )
|
|||
}
|
||||
|
||||
|
||||
static GLfloat light_pos[] = { 0.0, 20.0, 0.0, 1.0 };
|
||||
|
||||
static void init( void )
|
||||
{
|
||||
make_table();
|
||||
make_objects();
|
||||
|
||||
/* Setup texture */
|
||||
#ifdef USE_TEXTURE
|
||||
|
||||
Image = LoadRGBImage( TABLE_TEXTURE, &ImgWidth, &ImgHeight, &ImgFormat );
|
||||
if (!Image) {
|
||||
printf("Couldn't read %s\n", TABLE_TEXTURE);
|
||||
|
|
@ -169,17 +134,11 @@ static void init( void )
|
|||
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
|
||||
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
|
||||
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
|
||||
#endif
|
||||
|
||||
|
||||
xrot = 30.0;
|
||||
yrot = 50.0;
|
||||
spin = 0.0;
|
||||
|
||||
#ifndef USE_ZBUFFER
|
||||
glEnable( GL_CULL_FACE );
|
||||
#endif
|
||||
|
||||
glShadeModel( GL_FLAT );
|
||||
|
||||
glEnable( GL_LIGHT0 );
|
||||
|
|
@ -194,12 +153,14 @@ static void init( void )
|
|||
|
||||
static void reshape(int w, int h)
|
||||
{
|
||||
GLfloat aspect = (float) w / (float) h;
|
||||
|
||||
GLfloat yAspect = 2.5;
|
||||
GLfloat xAspect = yAspect * (float) w / (float) h;
|
||||
Width = w;
|
||||
Height = h;
|
||||
glViewport(0, 0, w, h);
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glFrustum( -aspect, aspect, -1.0, 1.0, 4.0, 300.0 );
|
||||
glFrustum( -xAspect, xAspect, -yAspect, yAspect, 10.0, 30.0 );
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
}
|
||||
|
|
@ -212,8 +173,7 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
|
|||
(void) eyey;
|
||||
(void) eyez;
|
||||
#ifndef USE_ZBUFFER
|
||||
if (eyex<0.5)
|
||||
{
|
||||
if (eyex<0.5) {
|
||||
#endif
|
||||
glPushMatrix();
|
||||
glTranslatef( 1.0, 1.5, 0.0 );
|
||||
|
|
@ -230,9 +190,8 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
|
|||
glCallList( objects_list[1] );
|
||||
glPopMatrix();
|
||||
#ifndef USE_ZBUFFER
|
||||
}
|
||||
else
|
||||
{
|
||||
}
|
||||
else {
|
||||
glPushMatrix();
|
||||
glTranslatef( -1.0, 0.85+3.0*fabs( cos(0.01*spin) ), 0.0 );
|
||||
glRotatef( 0.5*spin, 0.0, 0.5, 1.0 );
|
||||
|
|
@ -247,7 +206,7 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
|
|||
glRotatef( 0.5*spin, 0.0, 0.5, 1.0 );
|
||||
glCallList( objects_list[0] );
|
||||
glPopMatrix();
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
|
@ -262,6 +221,7 @@ static void draw_table( void )
|
|||
|
||||
static void draw_scene( void )
|
||||
{
|
||||
static GLfloat light_pos[] = { 0.0, 20.0, 0.0, 1.0 };
|
||||
GLfloat dist = 20.0;
|
||||
GLfloat eyex, eyey, eyez;
|
||||
|
||||
|
|
@ -279,20 +239,15 @@ static void draw_scene( void )
|
|||
glLightfv( GL_LIGHT0, GL_POSITION, light_pos );
|
||||
|
||||
/* draw table into stencil planes */
|
||||
glEnable( GL_STENCIL_TEST );
|
||||
#ifdef USE_ZBUFFER
|
||||
glDisable( GL_DEPTH_TEST );
|
||||
#endif
|
||||
glEnable( GL_STENCIL_TEST );
|
||||
glStencilFunc( GL_ALWAYS, 1, 0xffffffff );
|
||||
glStencilOp( GL_REPLACE, GL_REPLACE, GL_REPLACE );
|
||||
glColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
|
||||
draw_table();
|
||||
glColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
|
||||
|
||||
#ifdef USE_ZBUFFER
|
||||
glEnable( GL_DEPTH_TEST );
|
||||
#endif
|
||||
|
||||
|
||||
/* render view from below (reflected viewport) */
|
||||
/* only draw where stencil==1 */
|
||||
|
|
@ -318,9 +273,7 @@ static void draw_scene( void )
|
|||
glEnable( GL_BLEND );
|
||||
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
|
||||
|
||||
#ifdef USE_TEXTURE
|
||||
glEnable( GL_TEXTURE_2D );
|
||||
#endif
|
||||
draw_table();
|
||||
glDisable( GL_TEXTURE_2D );
|
||||
glDisable( GL_BLEND );
|
||||
|
|
@ -334,43 +287,34 @@ static void draw_scene( void )
|
|||
|
||||
glPopMatrix();
|
||||
|
||||
glutSwapBuffers();
|
||||
}
|
||||
|
||||
|
||||
|
||||
#if 0
|
||||
void draw_scene(void)
|
||||
{
|
||||
GLfloat dist = 20.0;
|
||||
GLfloat eyex, eyey, eyez;
|
||||
|
||||
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
||||
|
||||
|
||||
eyex = dist * cos(yrot*DEG2RAD) * cos(xrot*DEG2RAD);
|
||||
eyez = dist * sin(yrot*DEG2RAD) * cos(xrot*DEG2RAD);
|
||||
eyey = dist * sin(xrot*DEG2RAD);
|
||||
|
||||
/* view from top */
|
||||
glPushMatrix();
|
||||
gluLookAt( eyex, eyey, eyez, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0 );
|
||||
|
||||
draw_table();
|
||||
|
||||
glPopMatrix();
|
||||
if (ShowBuffer == GL_DEPTH) {
|
||||
ShowDepthBuffer(Width, Height, 1.0, 0.0);
|
||||
}
|
||||
else if (ShowBuffer == GL_STENCIL) {
|
||||
ShowStencilBuffer(Width, Height, 255.0, 0.0);
|
||||
}
|
||||
|
||||
glutSwapBuffers();
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
static void Key( unsigned char key, int x, int y )
|
||||
{
|
||||
(void) x;
|
||||
(void) y;
|
||||
if (key==27)
|
||||
if (key == 'd') {
|
||||
ShowBuffer = GL_DEPTH;
|
||||
}
|
||||
else if (key == 's') {
|
||||
ShowBuffer = GL_STENCIL;
|
||||
}
|
||||
else if (key==27) {
|
||||
exit(0);
|
||||
}
|
||||
else {
|
||||
ShowBuffer = GL_NONE;
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -381,15 +325,13 @@ static void SpecialKey( int key, int x, int y )
|
|||
switch (key) {
|
||||
case GLUT_KEY_UP:
|
||||
xrot += 3.0;
|
||||
#ifndef USE_ZBUFFER
|
||||
if ( xrot > 180 ) xrot = 180;
|
||||
#endif
|
||||
if ( xrot > 85 )
|
||||
xrot = 85;
|
||||
break;
|
||||
case GLUT_KEY_DOWN:
|
||||
xrot -= 3.0;
|
||||
#ifndef USE_ZBUFFER
|
||||
if ( xrot < 0 ) xrot = 0;
|
||||
#endif
|
||||
if ( xrot < 5 )
|
||||
xrot = 5;
|
||||
break;
|
||||
case GLUT_KEY_LEFT:
|
||||
yrot += 3.0;
|
||||
|
|
@ -414,22 +356,16 @@ static void idle( void )
|
|||
|
||||
int main( int argc, char *argv[] )
|
||||
{
|
||||
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB
|
||||
#ifdef USE_ZBUFFER
|
||||
| GLUT_DEPTH
|
||||
#endif
|
||||
| GLUT_STENCIL);
|
||||
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL);
|
||||
glutInitWindowPosition( 0, 0 );
|
||||
glutInitWindowSize(400, 300 );
|
||||
glutInitWindowSize( Width, Height );
|
||||
glutCreateWindow(argv[0]);
|
||||
glutReshapeFunc(reshape);
|
||||
glutDisplayFunc(draw_scene);
|
||||
glutKeyboardFunc(Key);
|
||||
glutSpecialFunc(SpecialKey);
|
||||
glutIdleFunc(idle);
|
||||
|
||||
init();
|
||||
|
||||
glutMainLoop();
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue