Attachment 13632 Details for Bug 14002 – test case

test case

shadow.c (text/plain), 3.33 KB, created by Shuang He on 2008-01-09 18:54:52 UTC

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Creator: Shuang He

Created: 2008-01-09 18:54:52 UTC

Size: 3.33 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 r1[4], r2[4];
>    int texName;
>
>    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>
>    glGenTextures (1, &texName);
>    glBindTexture (GL_TEXTURE_1D, texName);
>    glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S,
>                     GL_CLAMP_TO_BORDER_ARB);
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_T,
>                     GL_CLAMP_TO_BORDER_ARB);
>
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_COMPARE_MODE_ARB,
>                     GL_COMPARE_R_TO_TEXTURE_ARB);
>    glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_COMPARE_FUNC_ARB,
>                     GL_LEQUAL);
>
>    glEnable (GL_DEPTH_TEST);
>    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>    glDisable (GL_TEXTURE_1D);
>    glColor3f (0.0, 0.0, 1.0);
>
>    glBegin (GL_QUAD_STRIP);
>    glVertex3f (10.0, 20.0, -0.25);
>    glVertex3f (10.0, 40.0, -0.25);
>    glVertex3f (20.0, 20.0, -0.25);
>    glVertex3f (20.0, 40.0, -0.25);
>    glEnd ();
>
>    glBegin (GL_QUAD_STRIP);
>    glVertex3f (40.0, 20.0, -0.5);
>    glVertex3f (40.0, 40.0, -0.5);
>    glVertex3f (50.0, 20.0, -0.5);
>    glVertex3f (50.0, 40.0, -0.5);
>    glEnd ();
>
>    glCopyTexImage1D (GL_TEXTURE_1D, 0, GL_DEPTH_COMPONENT, 0, 30, 64, 0);
>    glTexParameteri (GL_TEXTURE_1D, GL_DEPTH_TEXTURE_MODE_ARB,
>                     GL_LUMINANCE);
>    glEnable (GL_TEXTURE_1D);
>    glDisable (GL_DEPTH_TEST);
>
>
>    glClear (GL_COLOR_BUFFER_BIT);
>    glClear (GL_DEPTH_BUFFER_BIT);
>    glColor3f (1.0, 0.0, 0.0);
>
>    GLfloat z = 0.3;
>
>    glBegin (GL_QUAD_STRIP);
>    glTexCoord4f (0.0, 0.0, z, 1.0);
>    glVertex2f (0.0, 0.0);
>    glTexCoord4f (0.0, 1.0, z, 1.0);
>    glVertex2f (0.0, 63.0);
>    glTexCoord4f (1.0, 0.0, z, 1.0);
>    glVertex2f (63.0, 00.0);
>    glTexCoord4f (1.0, 1.0, z, 1.0);
>    glVertex2f (63.0, 63.0);
>    glEnd ();
>
>    glReadPixels (15, 30, 1, 1, GL_RGBA, GL_FLOAT, &r1);
>    glReadPixels (45, 30, 1, 1, GL_RGBA, GL_FLOAT, &r2);
>
>    printf
>        ("(15, 30) = (%f, %f, %f, %f), should be (0.000000, 0.000000, 0.000000, 1.000000)\n",
>         r1[0], r1[1], r1[2], r1[3]);
>    printf
>        ("(45, 30) = (%f, %f, %f, %f), should be (1.000000, 1.000000, 1.000000, 1.000000)\n",
>         r2[0], r2[1], r2[2], r2[3]);
>
>    glDisable (GL_TEXTURE_1D);
>    glDisable (GL_DEPTH_TEST);
>
>    glFlush ();
>}
>
>void
>display (void)
>{
>    glMatrixMode (GL_PROJECTION);
>    glLoadIdentity ();
>    glOrtho (0, 63, 0, 63, 0, 1.0);
>    glViewport (0, 0, 63, 63);
>    test ();
>}
>
>
>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 14002: 13632

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