Attachment 16865 Details for Bug 16194 – test case

test case

fog.c (text/plain), 1.61 KB, created by WuNian on 2008-06-02 01:46:36 UTC

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Creator: WuNian

Created: 2008-06-02 01:46:36 UTC

Size: 1.61 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>#define X1   5.5
>#define Y1   6.5
>#define X2  10.5
>#define Y2  12.5
>
>void init(void)
>{
>   GLfloat fragColor[] = {0.8, 0.5, 0.2, 1.0};
>   GLfloat fogColor[] = {0.1, 0.1, 0.8, 1.0};
>
>   glDisable (GL_DITHER);
>
>   glEnable(GL_FOG);
>   glFogfv (GL_FOG_COLOR,      fogColor);
>   glFogf  (GL_FOG_START,      0.1);
>   glFogf  (GL_FOG_END,       0.9);
>   glFogf  (GL_FOG_COORDINATE_SOURCE, GL_FOG_COORDINATE);
>
>   glColor4fv(fragColor);
>   glFogf(GL_FOG_MODE, GL_LINEAR);
>
>}
>
>static void test(void)
>{    
>   GLfloat buf[3];
>   GLubyte bitmap[] = {0xFF};
>
>   glClear (GL_COLOR_BUFFER_BIT);
>
>   glFogCoordf(0.2);
>   glRasterPos2f (X1, Y1);
>   glBitmap (1, 1, 0.0, 0.0, 0.0, 0.0, bitmap);
>
>   glFogCoordf(0.8);
>   glRasterPos2f (X2, Y2);
>   glBitmap (1, 1, 0.0, 0.0, 0.0, 0.0, bitmap);
>
>   glReadPixels(X1, Y1, 1, 1, GL_RGB, GL_FLOAT, buf);
>   printf("pixel: %f %f %f\n", buf[0], buf[1], buf[2]);
>
>   glReadPixels(X2, Y2, 1, 1, GL_RGB, GL_FLOAT, buf);
>   printf("pixel: %f %f %f\n", buf[0], buf[1], buf[2]);
>}
>
>void display(void)
>{
>   glViewport(0, 0, WINDSIZEX, WINDSIZEY);
>   glMatrixMode(GL_PROJECTION);
>   glLoadIdentity();
>   gluOrtho2D(0, WINDSIZEX, 0, WINDSIZEY);
>   glMatrixMode(GL_MODELVIEW);
>   glLoadIdentity();
>
>   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 16194: 16865 | 17021 | 17024

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