From f98bdfca574478837b33c97d131dad4833e3ee12 Mon Sep 17 00:00:00 2001 From: Xavier Bachelot Date: Fri, 6 Jul 2007 12:56:21 -0600 Subject: call glutInit(), bug 11486 --- progs/demos/geartrain.c | 1 + progs/demos/gltestperf.c | 1 + progs/demos/isosurf.c | 1 + progs/demos/morph3d.c | 9 ++------- progs/demos/winpos.c | 1 + 5 files changed, 6 insertions(+), 7 deletions(-) (limited to 'progs') diff --git a/progs/demos/geartrain.c b/progs/demos/geartrain.c index 3feb2a0524..8363f2abc6 100644 --- a/progs/demos/geartrain.c +++ b/progs/demos/geartrain.c @@ -1053,6 +1053,7 @@ main (int argc, char *argv[]) else file = argv[1]; + glutInit(&argc, argv); glutInitWindowPosition (0, 0); glutInitWindowSize(640,480); glutInitDisplayMode (GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE ); diff --git a/progs/demos/gltestperf.c b/progs/demos/gltestperf.c index be95390101..2188b02419 100644 --- a/progs/demos/gltestperf.c +++ b/progs/demos/gltestperf.c @@ -569,6 +569,7 @@ main(int ac, char **av) if (ac == 2) frontbuffer = 0; + glutInit(&ac, av); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); glutInitWindowPosition(0, 0); glutInitWindowSize(640, 480); diff --git a/progs/demos/isosurf.c b/progs/demos/isosurf.c index 0710bc6047..10f94b6ace 100644 --- a/progs/demos/isosurf.c +++ b/progs/demos/isosurf.c @@ -1042,6 +1042,7 @@ int main(int argc, char **argv) read_surface( "isosurf.dat" ); + glutInit( &argc, argv); glutInitWindowPosition(0, 0); glutInitWindowSize(400, 400); diff --git a/progs/demos/morph3d.c b/progs/demos/morph3d.c index 162a6ff847..6aca8270ff 100644 --- a/progs/demos/morph3d.c +++ b/progs/demos/morph3d.c @@ -826,7 +826,7 @@ static void pinit(void) } -static void INIT(void) +int main(int argc, char **argv) { printf("Morph 3D - Shows morphing platonic polyhedra\n"); printf("Author: Marcelo Fernandes Vianna (vianna@cat.cbpf.br)\n\n"); @@ -841,6 +841,7 @@ static void INIT(void) object=1; + glutInit(&argc, argv); glutInitWindowPosition(0,0); glutInitWindowSize(640,480); @@ -888,9 +889,3 @@ static void INIT(void) glutMainLoop(); } - -int main(int argc, char **argv) -{ - INIT(); - return(0); -} diff --git a/progs/demos/winpos.c b/progs/demos/winpos.c index 3a1a19ecdb..b58e330864 100644 --- a/progs/demos/winpos.c +++ b/progs/demos/winpos.c @@ -100,6 +100,7 @@ static void init( void ) int main( int argc, char *argv[] ) { + glutInit(&argc, argv); glutInitWindowPosition(0, 0); glutInitWindowSize(500, 500); glutInitDisplayMode( GLUT_RGB ); -- cgit v1.2.3 From 34f6243beff6a66a76814638db68897eb719dd30 Mon Sep 17 00:00:00 2001 From: Brian Date: Wed, 11 Jul 2007 13:11:47 -0600 Subject: Improve this demo in a few ways. 1. Use more reasonable hither/yon clip planes to make better use of shallow (16-bit) z buffers. 2. Use different colors on cube faces to help detect Z fighting if it occurs. 3. Report GL_DEPTH_BITS on start-up. --- progs/xdemos/offset.c | 34 ++++++++++++++++++++++------------ 1 file changed, 22 insertions(+), 12 deletions(-) (limited to 'progs') diff --git a/progs/xdemos/offset.c b/progs/xdemos/offset.c index 3e92e68daa..0ad9147aea 100644 --- a/progs/xdemos/offset.c +++ b/progs/xdemos/offset.c @@ -71,12 +71,12 @@ typedef Vertex Quad[4]; /* data to define the six faces of a unit cube */ Quad quads[MAXQUAD] = { - { {0,0,0}, {1,0,0}, {1,1,0}, {0,1,0} }, - { {0,0,1}, {1,0,1}, {1,1,1}, {0,1,1} }, - { {0,0,0}, {1,0,0}, {1,0,1}, {0,0,1} }, - { {0,1,0}, {1,1,0}, {1,1,1}, {0,1,1} }, - { {0,0,0}, {0,0,1}, {0,1,1}, {0,1,0} }, - { {1,0,0}, {1,0,1}, {1,1,1}, {1,1,0} } + { {0,0,0}, {0,0,1}, {0,1,1}, {0,1,0} }, /* x = 0 */ + { {0,0,0}, {1,0,0}, {1,0,1}, {0,0,1} }, /* y = 0 */ + { {0,0,0}, {1,0,0}, {1,1,0}, {0,1,0} }, /* z = 0 */ + { {1,0,0}, {1,0,1}, {1,1,1}, {1,1,0} }, /* x = 1 */ + { {0,1,0}, {1,1,0}, {1,1,1}, {0,1,1} }, /* y = 1 */ + { {0,0,1}, {1,0,1}, {1,1,1}, {0,1,1} } /* z = 1 */ }; #define WIREFRAME 0 @@ -86,7 +86,7 @@ static void error(const char* prog, const char* msg); static void cubes(int mx, int my, int mode); static void fill(Quad quad); static void outline(Quad quad); -static void draw_hidden(Quad quad, int mode); +static void draw_hidden(Quad quad, int mode, int face); static void process_input(Display *dpy, Window win); static int query_extension(char* extName); @@ -101,6 +101,7 @@ int main(int argc, char** argv) { XSetWindowAttributes swa; Window win; GLXContext cx; + GLint z; dpy = XOpenDisplay(0); if (!dpy) error(argv[0], "can't open display"); @@ -134,13 +135,16 @@ int main(int argc, char** argv) { /* set up viewing parameters */ glMatrixMode(GL_PROJECTION); - gluPerspective(20, 1, 0.1, 20); + gluPerspective(20, 1, 10, 20); glMatrixMode(GL_MODELVIEW); glTranslatef(0, 0, -15); /* set other relevant state information */ glEnable(GL_DEPTH_TEST); + glGetIntegerv(GL_DEPTH_BITS, &z); + printf("GL_DEPTH_BITS = %d\n", z); + #ifdef GL_EXT_polygon_offset printf("using 1.0 offset extension\n"); glPolygonOffsetEXT( 1.0, 0.00001 ); @@ -160,6 +164,7 @@ int main(int argc, char** argv) { static void draw_scene(int mx, int my) { + glClearColor(0.25, 0.25, 0.25, 0); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); @@ -206,7 +211,7 @@ cubes(int mx, int my, int mode) { glTranslatef(x, y, z); glScalef(0.8, 0.8, 0.8); for (i = 0; i < MAXQUAD; i++) - draw_hidden(quads[i], mode); + draw_hidden(quads[i], mode, i); glPopMatrix(); } } @@ -236,13 +241,18 @@ outline(Quad quad) { } static void -draw_hidden(Quad quad, int mode) { +draw_hidden(Quad quad, int mode, int face) { + static const GLfloat colors[3][3] = { + {0.5, 0.5, 0.0}, + {0.8, 0.5, 0.0}, + {0.0, 0.5, 0.8} + }; if (mode == HIDDEN_LINE) { - glColor3f(0, 0, 0); + glColor3fv(colors[face % 3]); fill(quad); } - /* draw the outline using white, optionally fill the interior with black */ + /* draw the outline using white */ glColor3f(1, 1, 1); outline(quad); } -- cgit v1.2.3