diff options
| -rw-r--r-- | progs/trivial/.gitignore | 1 | ||||
| -rw-r--r-- | progs/trivial/Makefile | 1 | ||||
| -rw-r--r-- | progs/trivial/SConscript | 1 | ||||
| -rw-r--r-- | progs/trivial/tri-viewport.c | 129 |
4 files changed, 132 insertions, 0 deletions
diff --git a/progs/trivial/.gitignore b/progs/trivial/.gitignore index dadd535591..5159e31aa2 100644 --- a/progs/trivial/.gitignore +++ b/progs/trivial/.gitignore @@ -110,6 +110,7 @@ tri-unfilled-tri-lit tri-unfilled-userclip tri-unfilled-userclip-stip tri-userclip +tri-viewport tri-z tri-z-eq trifan diff --git a/progs/trivial/Makefile b/progs/trivial/Makefile index 6ba41a7895..3300fce636 100644 --- a/progs/trivial/Makefile +++ b/progs/trivial/Makefile @@ -119,6 +119,7 @@ SOURCES = \ tri-unfilled-userclip.c \ tri-unfilled.c \ tri-userclip.c \ + tri-viewport.c \ tri-z-eq.c \ tri-z.c \ tri.c \ diff --git a/progs/trivial/SConscript b/progs/trivial/SConscript index 8a7fb6be30..dc84a0550b 100644 --- a/progs/trivial/SConscript +++ b/progs/trivial/SConscript @@ -114,6 +114,7 @@ progs = [ 'tri-unfilled-userclip', 'tri-unfilled', 'tri-userclip', + 'tri-viewport', 'tri-z-eq', 'tri-z', 'tri', diff --git a/progs/trivial/tri-viewport.c b/progs/trivial/tri-viewport.c new file mode 100644 index 0000000000..3205b9ee9c --- /dev/null +++ b/progs/trivial/tri-viewport.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that (i) the above copyright notices and this permission notice appear in + * all copies of the software and related documentation, and (ii) the name of + * Silicon Graphics may not be used in any advertising or + * publicity relating to the software without the specific, prior written + * permission of Silicon Graphics. + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF + * ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * + * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR + * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <GL/glut.h> + +GLenum doubleBuffer = 1; +int win; + +static void Init(void) +{ + fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); + fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); + fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); + + glClearColor(0.3, 0.1, 0.3, 0.0); +} + +static void Reshape(int width, int height) +{ + glViewport(width / -2.0, height / -2.0, width, height); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); +} + +static void Key(unsigned char key, int x, int y) +{ + switch (key) { + case 27: + exit(0); + default: + glutPostRedisplay(); + return; + } +} + +static void Draw(void) +{ + glClear(GL_COLOR_BUFFER_BIT); + + glBegin(GL_TRIANGLES); + glColor3f(.8,0,0); + glVertex3f(-0.9, 0.9, -30.0); + glColor3f(0,.9,0); + glVertex3f( 0.9, 0.9, -30.0); + glColor3f(0,0,.7); + glVertex3f( 0.0, -0.9, -30.0); + glEnd(); + + glFlush(); + + if (doubleBuffer) { + glutSwapBuffers(); + } +} + +static GLenum Args(int argc, char **argv) +{ + GLint i; + + 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 { + fprintf(stderr, "%s (Bad option).\n", argv[i]); + return GL_FALSE; + } + } + return GL_TRUE; +} + +int main(int argc, char **argv) +{ + GLenum type; + + glutInit(&argc, argv); + + if (Args(argc, argv) == GL_FALSE) { + exit(1); + } + + glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250); + + type = GLUT_RGB | GLUT_ALPHA; + type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; + glutInitDisplayMode(type); + + win = glutCreateWindow(*argv); + if (!win) { + exit(1); + } + + Init(); + + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutDisplayFunc(Draw); + glutMainLoop(); + return 0; +} |