UPDATED: example texture creation by baldurk

1

void Draw() {     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);     glLoadIdentity();     glTranslatef(0.0f, 0.0f, -6.0f);     glEnable(GL_TEXTURE_2D);     glBindTexture(GL_TEXTURE_2D, texture);     glBegin(GL_QUADS);     {         glColor3f(1.0f, 1.0f, 1.0f);         glTexCoord2f(0.0f, 1.0f);glVertex3f(-1.0f,  1.0f, 0.0f);         glTexCoord2f(1.0f, 1.0f);glVertex3f( 1.0f,  1.0f, 0.0f);         glTexCoord2f(1.0f, 0.0f);glVertex3f( 1.0f, -1.0f, 0.0f);         glTexCoord2f(0.0f, 0.0f);glVertex3f(-1.0f, -1.0f, 0.0f);     }     glEnd(); } void Init() { #define SIZE 64     float texarray[3 * SIZE * SIZE];     for(int i=0; i < SIZE; i++)     {         for(int j=0; j < SIZE*3; j += 3) // notice you must stride by 3, to a 3*SIZE limit                                          // otherwise you get problems. I think this was                                          // what you're doing wrong.         {             // notice also you must multiply i*SIZE by 3, for each pixel.             texarray[j + (i*SIZE*3)] = float(rand()) / float(RAND_MAX);             texarray[j + (i*SIZE*3) + 1] = float(rand()) / float(RAND_MAX);             texarray[j + (i*SIZE*3) + 2] = float(rand()) / float(RAND_MAX);         }     }     glBindTexture(GL_TEXTURE_2D, texture);     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, SIZE, SIZE, 0, GL_RGB, GL_FLOAT, texarray);     glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);     glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); }