我声明了GLfloat vertices [][3]，GLfloat normals [][3]和GLfloat colors [][3]，然后根据下面的代码声明了立方体和棋盘的结构体。我希望立方体有一个间隙或立方体大小的0.1%，所以将它们缩放0.99倍。失败的是看不到间隙。

typedef struct cube * Cube;
struct cube {
    float x, y, z;
    float scale;
};

Cube cube;     // cube
Cube *board;

void drawBoard()
{
    // Initialize cube and board
    cube = (Cube)malloc(sizeof(struct cube));
    cube->x = 0.0;
    cube->y = 0.0;
    cube->z = 0.0;
    cube->scale = 1;

    board = (Cube*)malloc(sizeof(Cube)*64);
    for(int i=0; i<64; i++) {
        board[i] = (Cube)malloc(sizeof(struct cube));
        board[i]->x = 0.0 + 0.1*(i%8);
        board[i]->y = 0.0 - 0.1*(i/8);
        board[i]->z = 0.0;
        board[i]->scale = 0.99;
    }
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();
    glTranslatef(cube->x, cube->y, cube->z);
    //glScalef(cube->scale, cube->scale, cube->scale);

    // Draw board of cubes
    for(int i=0; i<64; i++) {
        glPushMatrix();
        glTranslatef(board[i]->x, board[i]->y, board[i]->z);
        glScalef(board[i]->scale, board[i]->scale, board[i]->scale);

        drawCube();
        glEnd();
        glPopMatrix();
    }
    glPopMatrix();
    glFlush();
}

我期待看到一个板大小列X行的三维立方体考虑立方体有一个大小= 1，与他们之间的差距为0.1%的大小。板是画，但立方体似乎都并排放置没有差距。