diff options
Diffstat (limited to 'progs/trivial/tri-scissor-tri.c')
-rw-r--r-- | progs/trivial/tri-scissor-tri.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/progs/trivial/tri-scissor-tri.c b/progs/trivial/tri-scissor-tri.c deleted file mode 100644 index 1bb15501bb..0000000000 --- a/progs/trivial/tri-scissor-tri.c +++ /dev/null @@ -1,188 +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> - - -#define CI_OFFSET_1 16 -#define CI_OFFSET_2 32 - -GLint Width = 300, Height = 300; - -GLenum doubleBuffer; - -/* scissor bounds */ -static GLint Left, Right, Bottom, Top; - - -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); -} - -static void Reshape(int width, int height) -{ - glViewport(0, 0, (GLint)width, (GLint)height); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); - glMatrixMode(GL_MODELVIEW); - - Width = width; - Height = height; - - Left = Width / 4; - Right = Width * 3 / 4; - Bottom = Height / 4; - Top = Height * 3 / 4; -} - -static void Key(unsigned char key, int x, int y) -{ - int step = 2; - switch (key) { - case 'l': - Left -= step; - break; - case 'L': - Left += step; - break; - case 'r': - Right -= step; - break; - case 'R': - Right += step; - break; - case 'b': - Bottom -= step; - break; - case 'B': - Bottom += step; - break; - case 't': - Top -= step; - break; - case 'T': - Top += step; - break; - case 27: - exit(1); - default: - ; - } - - glutPostRedisplay(); -} - -static void Draw(void) -{ - glClear(GL_COLOR_BUFFER_BIT); - - glBegin(GL_TRIANGLES); - glColor3f(0,0,.7); - glVertex3f( 0.9, -0.9, -30.0); - glColor3f(.8,0,0); - glVertex3f( 0.9, 0.9, -30.0); - glColor3f(0,.9,0); - glVertex3f(-0.9, 0.0, -30.0); - glEnd(); - - printf("Scissor %d, %d .. %d, %d\n", Left, Bottom, Right, Top); - glScissor(Left, Bottom, Right-Left, Top-Bottom); - glEnable(GL_SCISSOR_TEST); - - glBegin(GL_TRIANGLES); - glColor3f(0,0,.7); - glVertex3f(-0.9, -0.9, -30.0); - glColor3f(.8,0,0); - glVertex3f(-0.9, 0.9, -30.0); - glColor3f(0,.9,0); - glVertex3f( 0.9, 0.0, -30.0); - glEnd(); - - glDisable(GL_SCISSOR_TEST); - - 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(100, 0); glutInitWindowSize(Width, Height); - - type = GLUT_RGB; - type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; - glutInitDisplayMode(type); - - if (glutCreateWindow(*argv) == GL_FALSE) { - exit(1); - } - - Init(); - - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutDisplayFunc(Draw); - glutMainLoop(); - return 0; -} |