Attachment 14498 Details for Bug 14617 – test case

test case

testcase.c (text/plain), 3.83 KB, created by WuNian on 2008-02-21 23:43:56 UTC

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Creator: WuNian

Created: 2008-02-21 23:43:56 UTC

Size: 3.83 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>GLfloat t[] = {
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>        0.0, 1.0, 0.0, 0.0, 1.0, 0.0,   0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
>    };
>
>void draw_first(void)
>{
>    glClear(GL_COLOR_BUFFER_BIT);
>
>    glTexImage2D(GL_TEXTURE_2D, 0, 3, 8, 8, 0, GL_RGB, GL_FLOAT,
>                 (unsigned char *)t);
>    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
>    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
>    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
>
>    glEnable(GL_TEXTURE_2D);
>    glBegin(GL_QUAD_STRIP);
>        glTexCoord2f(0.25, 0.25);
>        glVertex2i(25, 25);
>        glTexCoord2f(0.25, 0.75);
>        glVertex2i(25, 75);
>        glTexCoord2f(0.75, 0.25);
>        glVertex2i(75, 25);
>        glTexCoord2f(0.75, 0.75);
>        glVertex2i(75, 75);
>    glEnd();
>
>    glDisable(GL_TEXTURE_2D);
>}
>
>void test()
>{
>    GLfloat buf[3];
>
>    glTexImage2D(GL_TEXTURE_2D, 0, 3, 8, 8, 0, GL_RGB, GL_FLOAT,
>                 (unsigned char *)t);
>    glClear(GL_COLOR_BUFFER_BIT);
>
>    glColor3f(1.0, 1.0, 1.0);
>    glBegin(GL_QUAD_STRIP);
>        glTexCoord2f(0.25, 0.25);
>        glVertex2i(25, 25);
>        glTexCoord2f(0.25, 0.75);
>        glVertex2i(25, 75);
>        glTexCoord2f(0.75, 0.25);
>        glVertex2i(75, 25);
>        glTexCoord2f(0.75, 0.75);
>        glVertex2i(75, 75);
>    glEnd();
>    glFlush();
>
>    glEnable(GL_TEXTURE_2D);
>    glBegin(GL_QUAD_STRIP);
>        glTexCoord2f(0.25, 0.25);
>        glVertex2i(25, 25);
>        glTexCoord2f(0.25, 0.75);
>        glVertex2i(25, 75);
>        glTexCoord2f(0.75, 0.25);
>        glVertex2i(75, 25);
>        glTexCoord2f(0.75, 0.75);
>        glVertex2i(75, 75);
>    glEnd();
>
>
>    glReadPixels(35, 50, 1, 1, GL_RGB, GL_FLOAT, buf);
>
>    printf("get color: %f %f %f\n", buf[0], buf[1], buf[2]);
>    if (fabs(buf[0] - 0.0) > 0.49 ||
>        fabs(buf[1] - 1.0) > 0.49 ||
>        fabs(buf[2] - 0.0) > 0.49) {
>        printf("expect color: 0 1 0 \n");
>    //    exit(-1);
>    }else
>        printf("success\n");
>}
>
>void init(void)
>{
>    glDisable(GL_DITHER);
>    glClearColor(0.0, 0.0, 0.0, 0.0);
>}
>
>void display(void)
>{
>    glViewport(0, 0, WINDSIZEX, WINDSIZEY);
>        glMatrixMode(GL_PROJECTION);
>        glLoadIdentity();
>    gluOrtho2D(0, WINDSIZEX, 0, WINDSIZEY);
>        glMatrixMode(GL_MODELVIEW);
>        glLoadIdentity();
>
>//    draw_first();
>    test();
>}
>
>int main(int argc, char** argv)
>{
>   glutInit(&argc, argv);
>   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
>   glutInitWindowSize(WINDSIZEX, WINDSIZEY);
>   glutInitWindowPosition(100, 100);
>   glutCreateWindow(argv[0]);
>   init();
>   glutDisplayFunc(display);
>   glutMainLoop();
>   return 0; 
>}

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Attachments on bug 14617: 14498 | 14504 | 14682

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