diff options
Diffstat (limited to 'progs/trivial/quad-tex-2d.c')
| -rw-r--r-- | progs/trivial/quad-tex-2d.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/progs/trivial/quad-tex-2d.c b/progs/trivial/quad-tex-2d.c deleted file mode 100644 index 8a886ef578..0000000000 --- a/progs/trivial/quad-tex-2d.c +++ /dev/null @@ -1,189 +0,0 @@ -/* - * 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> - -static GLenum Target = GL_TEXTURE_2D; -static GLenum Filter = GL_NEAREST; -GLenum doubleBuffer; -static float Rot = 0; -static int win = 0; - -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)); - fflush(stderr); - - glClearColor(0.0, 0.0, 1.0, 0.0); - -#define SIZE 32 - { - GLubyte tex2d[SIZE][SIZE][3]; - GLint s, t; - - for (s = 0; s < SIZE; s++) { - for (t = 0; t < SIZE; t++) { -#if 0 - tex2d[t][s][0] = (s < SIZE/2) ? 0 : 255; - tex2d[t][s][1] = (t < SIZE/2) ? 0 : 255; - tex2d[t][s][2] = 0; -#else - tex2d[t][s][0] = s*255/(SIZE-1); - tex2d[t][s][1] = t*255/(SIZE-1); - tex2d[t][s][2] = 0; -#endif - } - } - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - if (Target == GL_TEXTURE_1D) - glTexImage1D(Target, 0, 3, SIZE, 0, GL_RGB, GL_UNSIGNED_BYTE, tex2d); - else - glTexImage2D(Target, 0, 3, SIZE, SIZE, 0, - GL_RGB, GL_UNSIGNED_BYTE, tex2d); - - glEnable(Target); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - glTexParameterf(Target, GL_TEXTURE_WRAP_R, GL_REPEAT); - glTexParameterf(Target, GL_TEXTURE_MIN_FILTER, Filter); - glTexParameterf(Target, GL_TEXTURE_MAG_FILTER, Filter); - - glPixelStorei(GL_UNPACK_ALIGNMENT, 4); - } -} - -static void Reshape(int width, int height) -{ - glViewport(0, 0, (GLint)width, (GLint)height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); -#if 0 - glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); -#else - glFrustum(-1, 1, -1, 1, 10, 20); -#endif - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0, 0, -15); -} - -static void Key(unsigned char key, int x, int y) -{ - switch (key) { - case 'r': - Rot += 10.0; - break; - case 'R': - Rot -= 10.0; - break; - case 27: - glutDestroyWindow(win); - exit(0); - default: - return; - } - glutPostRedisplay(); -} - -static void Draw(void) -{ - glClear(GL_COLOR_BUFFER_BIT); - - glPushMatrix(); - glRotatef(Rot, 0, 1, 0); - - glBegin(GL_QUADS); - glTexCoord2f(1,0); - glVertex3f( 0.9, -0.9, 0.0); - glTexCoord2f(1,1); - glVertex3f( 0.9, 0.9, 0.0); - glTexCoord2f(0,1); - glVertex3f(-0.9, 0.9, 0.0); - glTexCoord2f(0,0); - glVertex3f(-0.9, -0.9, 0.0); - glEnd(); - - glPopMatrix(); - - glFlush(); - - if (doubleBuffer) { - glutSwapBuffers(); - } -} - -static GLenum Args(int argc, char **argv) -{ - GLint i; - - doubleBuffer = 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 { - 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; - 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; -} |