Attachment 13096 Details for Bug 13649 – test case

test case

depthrange.c (text/plain), 1.55 KB, created by Shuang He on 2007-12-13 18:13:10 UTC

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Creator: Shuang He

Created: 2007-12-13 18:13:10 UTC

Size: 1.55 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>
>void
>init (void)
>{
>    int i;
>    GLfloat white[] = { 1.0, 1.0, 1.0, 1.0 };
>
>    glClearColor (0.0, 0.0, 0.0, 1.0);
>    glColor4fv (white);
>    glDisable (GL_DITHER);
>}
>
>
>static void
>test (void)
>{
>    GLfloat defaultColor[] = { 0.0, 0.0, 0.0, 1.0 };
>    int i, j;
>    GLfloat buf;
>    GLfloat n, f;
>    GLubyte img[1] = {0xff};	
>
>    glClearDepth (0);
>    glClearColor (0.0, 0.0, 0.0, 1.0);
>    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>
>    glEnable (GL_DEPTH_TEST);
>    glDepthFunc (GL_ALWAYS);
>    glColor3f (0.0, 0.0, 0.0);
>
>    n = 0.0;
>    f = 1.0;
>    glDepthRange(n, f);
>    GLfloat nD = 0.25;
>
>    glRasterPos3f (0.2, 0.2, nD);
>    glBitmap(1, 1, 0, 0, 0, 0, img);
>    //glDrawPixels(1, 1, GL_RGB, GL_FLOAT, defaultColor);
>
>    glReadPixels (0, 0, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &buf);
>    printf ("read out pixels: (0, 0) = %f, ", buf);
>    printf ("should be %f\n", (f-n)/2*nD+(f+n)/2);
>}
>
>void
>display (void)
>{
>    glMatrixMode (GL_PROJECTION);
>    glLoadIdentity ();
>    glOrtho (0, WINDSIZEX, 0, WINDSIZEY, 1.0, -1.0);
>    test ();
>}
>
>int
>main (int argc, char **argv)
>{
>    glutInit (&argc, argv);
>    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGBA | GLUT_DEPTH);
>    glutInitWindowSize (WINDSIZEX, WINDSIZEY);
>    glutInitWindowPosition (100, 100);
>    glutCreateWindow (argv[0]);
>    init ();
>    glutDisplayFunc (display);
>    glutMainLoop ();
>    return 0;
>}

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Attachments on bug 13649: 13096

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