Attachment 13054 Details for Bug 13614 – test case

test case

drawbitmap.c (text/plain), 1.86 KB, created by Shuang He on 2007-12-11 23:40:26 UTC

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Creator: Shuang He

Created: 2007-12-11 23:40:26 UTC

Size: 1.86 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);
>}
>
>#define SIZE 8
>static void
>test (void)
>{
>    GLubyte t[SIZE * SIZE * 4];
>    int i, j;
>    GLfloat buf[3];
>    GLubyte bitmap[1] = {0xAA};
>
>    glClearColor (0.0, 0.0, 0.0, 1.0);
>    glClear (GL_COLOR_BUFFER_BIT);
>
>    for (i=0; i<SIZE; i++)
>        for (j=0; j<SIZE; j++)
>        {
>            t[4*(i*SIZE+j)] = i % 256;
>            t[4*(i*SIZE+j)+1] = i % 256;
>            t[4*(i*SIZE+j)+2] = i % 256;
>            t[4*(i*SIZE+j)+3] = 0;
>        }
>
>
>    glRasterPos2f (0.0, 0.0);
>    glDrawPixels (SIZE, SIZE, GL_BGRA, GL_UNSIGNED_BYTE, t);
>    glReadPixels (0, 0, 1, 1, GL_RGB, GL_FLOAT, buf);
>    printf ("after drawpixel, read out pixels: (0, 0) = (%f, %f, %f)\n", buf[0], buf[1],
>            buf[2]);
>
>
>    glClear (GL_COLOR_BUFFER_BIT);
>    glColor3f (1.0, 1.0, 1.0);
>    glRasterPos2f(0.0, 0.0);
>    glBitmap(8, 1, 0, 0, 0, 0, bitmap);
>    glReadPixels (0, 0, 1, 1, GL_RGB, GL_FLOAT, buf);
>    printf ("after glBitmap, read out pixels: (0, 0) = (%f, %f, %f), ", buf[0], buf[1],
>            buf[2]);
>    printf ("should be (%f, %f, %f)\n", 1.0, 1.0, 1.0);
>}
>
>void
>display (void)
>{
>    glMatrixMode (GL_PROJECTION);
>    glLoadIdentity ();
>    glOrtho (0, WINDSIZEX, 0, WINDSIZEY, 0, -1.0);
>    test ();
>}
>
>int
>main (int argc, char **argv)
>{
>    glutInit (&argc, argv);
>    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGBA);
>    glutInitWindowSize (WINDSIZEX, WINDSIZEY);
>    glutInitWindowPosition (100, 100);
>    glutCreateWindow (argv[0]);
>    init ();
>    glutDisplayFunc (display);
>    glutMainLoop ();
>    return 0;
>}

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Attachments on bug 13614: 13054 | 13055

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