Question

I’m trying to make a simple textured rectangular in OpenGL using SOIL and GLUT.

This is my Display function (executed in main by glutDisplayFunc(Display)):

void Display () {     GLuint tex_2d;      glMatrixMode (GL_MODELVIEW);     glLoadIdentity ();     glClear (GL_COLOR_BUFFER_BIT);     glClearColor (1.0,1.0,1.0,1.0);     gluLookAt (eyex,eyey,eyez,centerx,centery,centerz,0,1,0);      glEnable(GL_TEXTURE_2D);      tex_2d = SOIL_load_OGL_texture     (         'img.png',         SOIL_LOAD_AUTO,         SOIL_CREATE_NEW_ID,         SOIL_FLAG_MIPMAPS | SOIL_FLAG_INVERT_Y | SOIL_FLAG_NTSC_SAFE_RGB | SOIL_FLAG_COMPRESS_TO_DXT     );      if( 0 == tex_2d )     {         printf( 'SOIL loading error: '%s'\n', SOIL_last_result() );         exit(1);     }     glBindTexture(GL_TEXTURE_2D, tex_2d);      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);       glColor3f (0.0,0.0,0.0);     glBegin(GL_POLYGON);                         glTexCoord2f(0.0f, 0.0f); glVertex2f(0.0f, 0.0f);                        glTexCoord2f(1.0f, 0.0f); glVertex2f(1.0f, 0.0f);                        glTexCoord2f(1.0f, 1.0f); glVertex2f(1.0f, 1.0f);                        glTexCoord2f(0.0f, 1.0f); glVertex2f(0.0f, 1.0f);       glEnd();        glDisable(GL_TEXTURE_2D);     glFlush ();     glutSwapBuffers(); } 

With this is see only a black rectangular without any texture. I’m trying to do something with this for a few hours. Please help, thanks in advance.

Answer 1

Could it be that you set the color to black just before you draw the rectangle? The line

glColor3f (0.0,0.0,0.0); 

Try white instead…

glColor3f (1.0,1.0,1.0);