Attachment 10950 Details for Bug 11804 – test case

test case

pointsprite.c (text/plain), 2.46 KB, created by WuNian on 2007-08-01 19:48:29 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: WuNian

Created: 2007-08-01 19:48:29 UTC

Size: 2.46 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, j;
>   GLint texID;
>   GLfloat   texImage[2][2][4];
>
>   for (i = 0; i < 2; i++)
>   {
>      for (j = 0; j < 2; j++)
>      {
>          if (i == 0)
>          {
>            texImage[i][j][0] = 1.0;
>            texImage[i][j][1] = 0.0;
>            texImage[i][j][2] = 0.0;
>            texImage[i][j][3] = 0.0;
>           }
>           else
>           {
>            texImage[i][j][0] = 0.0;
>            texImage[i][j][1] = 0.0;
>            texImage[i][j][2] = 1.0;
>            texImage[i][j][3] = 0.0;
>           }
>      }
>   }
>
>   glEnable(GL_TEXTURE_2D);
>
>   glGenTextures(1, &texID);
>
>   glBindTexture(GL_TEXTURE_2D, texID);
>
>   glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>   glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_FLOAT,
>         texImage);
>
>   glTexEnvf(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
> 
>   glEnable(GL_POINT_SPRITE);
>
>   GLfloat maxSize;
>   glGetFloatv(GL_POINT_SIZE_MAX, &maxSize);
>   printf ("max point size: %f\n", maxSize);
>}
>
>#define TEX_WIDTH 2
>static void test(void)
>{    
>   GLfloat buf[(TEX_WIDTH+2)*(TEX_WIDTH+2)*3];
>   int i, j;
>
>   glClear(GL_COLOR_BUFFER_BIT);
>
>   glPointSize(TEX_WIDTH);
>   glPolygonMode (GL_FRONT_AND_BACK, GL_POINT);
>   glBegin(GL_TRIANGLES);
>      glVertex2f(TEX_WIDTH/2+1, TEX_WIDTH/2+1);
>      glVertex2f(20, 8);
>      glVertex2f(40, 80);
>   glEnd();
>
>
>   glReadPixels(0, 0, TEX_WIDTH+2, TEX_WIDTH+2, GL_RGB, GL_FLOAT, buf);
>   for (i=0; i<TEX_WIDTH+2; i++)
>   {
>      printf ("row %d: ", i);
>      for (j=0; j<TEX_WIDTH+2; j++){
>          printf("(%f %f %f) ", buf[(i*(TEX_WIDTH+2)+j)*3], buf[(i*(TEX_WIDTH+2)+j)*3+1], buf[(i*(TEX_WIDTH+2)+j)*3+2]);
>      }
>      printf("\n");
>   }
>}
>
>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)
>{
>   printf ("Please check the support to point_sprite yourself!\n");
>
>   glutInit(&argc, argv);
>   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
>   glutInitWindowSize(WINDSIZEX, WINDSIZEY);
>   glutInitWindowPosition(100, 100);
>   glutCreateWindow(argv[0]);
>   init();
>   glutDisplayFunc(display);
>   glutMainLoop();
>   return 0; 
>}

Actions: View

Attachments on bug 11804: 10950

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.