diff options
author | Brian Paul <[email protected]> | 2009-04-18 12:57:13 -0600 |
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committer | Brian Paul <[email protected]> | 2009-04-18 12:57:13 -0600 |
commit | dfd69a27f8c3db3d90e2334237bf4a8eabb17e9e (patch) | |
tree | 12b1d120309dae6e59b0fce7105b4dc87a582a95 /progs/tests/glutfx.c | |
parent | 6a495d26af54011ff1ec0597b38db2ce162c7d50 (diff) |
demos: move glutfx demo to tests/
Diffstat (limited to 'progs/tests/glutfx.c')
-rw-r--r-- | progs/tests/glutfx.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/progs/tests/glutfx.c b/progs/tests/glutfx.c new file mode 100644 index 00000000000..8bf55823897 --- /dev/null +++ b/progs/tests/glutfx.c @@ -0,0 +1,189 @@ + +/* + * Example of how one might use GLUT with the 3Dfx driver in full-screen mode. + * Note: this only works with X since we're using Mesa's GLX "hack" for + * using Glide. + * + * Goals: + * easy setup and input event handling with GLUT + * use 3Dfx hardware + * automatically set MESA environment variables + * don't lose mouse input focus + * + * Brian Paul This file is in the public domain. + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <GL/glut.h> + + +#define WIDTH 640 +#define HEIGHT 480 + + +static int Window = 0; +static int ScreenWidth, ScreenHeight; +static GLuint Torus = 0; +static GLfloat Xrot = 0.0, Yrot = 0.0; + + + +static void Display( void ) +{ + static GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0}; + static GLfloat red[4] = {1.0, 0.2, 0.2, 1.0}; + static GLfloat green[4] = {0.2, 1.0, 0.2, 1.0}; + + glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); + + glPushMatrix(); + glRotatef(Xrot, 1, 0, 0); + glRotatef(Yrot, 0, 1, 0); + + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue); + glCallList(Torus); + + glRotatef(90.0, 1, 0, 0); + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red); + glCallList(Torus); + + glRotatef(90.0, 0, 1, 0); + glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green); + glCallList(Torus); + + glPopMatrix(); + + glutSwapBuffers(); +} + + +static void Reshape( int width, int height ) +{ + float ratio = (float) width / (float) height; + + ScreenWidth = width; + ScreenHeight = height; + + /* + * The 3Dfx driver is limited to 640 x 480 but the X window may be larger. + * Enforce that here. + */ + if (width > WIDTH) + width = WIDTH; + if (height > HEIGHT) + height = HEIGHT; + + glViewport( 0, 0, width, height ); + glMatrixMode( GL_PROJECTION ); + glLoadIdentity(); + glFrustum( -ratio, ratio, -1.0, 1.0, 5.0, 30.0 ); + glMatrixMode( GL_MODELVIEW ); + glLoadIdentity(); + glTranslatef( 0.0, 0.0, -20.0 ); +} + + +static void Key( unsigned char key, int x, int y ) +{ + (void) x; + (void) y; + switch (key) { + case 27: + glutDestroyWindow(Window); + exit(0); + break; + } + glutPostRedisplay(); +} + + +static void SpecialKey( int key, int x, int y ) +{ + (void) x; + (void) y; + switch (key) { + case GLUT_KEY_UP: + break; + case GLUT_KEY_DOWN: + break; + case GLUT_KEY_LEFT: + break; + case GLUT_KEY_RIGHT: + break; + } + glutPostRedisplay(); +} + + +static void MouseMove( int x, int y ) +{ + Xrot = y - ScreenWidth / 2; + Yrot = x - ScreenHeight / 2; + glutPostRedisplay(); +} + + +static void Init( void ) +{ + Torus = glGenLists(1); + glNewList(Torus, GL_COMPILE); + glutSolidTorus(0.5, 2.0, 10, 20); + glEndList(); + + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + + glEnable(GL_DEPTH_TEST); + glEnable(GL_CULL_FACE); +} + + +int main( int argc, char *argv[] ) +{ +#ifndef _WIN32 + printf("NOTE: if you've got 3Dfx VooDoo hardware you must run this"); + printf(" program as root.\n\n"); + printf("Move the mouse. Press ESC to exit.\n\n"); +#endif + + /* Tell Mesa GLX to use 3Dfx driver in fullscreen mode. */ + putenv("MESA_GLX_FX=fullscreen"); + + /* Disable 3Dfx Glide splash screen */ + putenv("FX_GLIDE_NO_SPLASH="); + + /* Give an initial size and position so user doesn't have to place window */ + glutInitWindowPosition(0, 0); + glutInitWindowSize(WIDTH, HEIGHT); + glutInit( &argc, argv ); + + glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH ); + + Window = glutCreateWindow(argv[0]); + if (!Window) { + printf("Error, couldn't open window\n"); + exit(1); + } + + /* + * Want the X window to fill the screen so that we don't have to + * worry about losing the mouse input focus. + * Note that we won't actually see the X window since we never draw + * to it, hence, the original X screen's contents aren't disturbed. + */ + glutFullScreen(); + + Init(); + + glutReshapeFunc( Reshape ); + glutKeyboardFunc( Key ); + glutSpecialFunc( SpecialKey ); + glutDisplayFunc( Display ); + glutPassiveMotionFunc( MouseMove ); + + glutMainLoop(); + return 0; +} |