OpenGL LWJGL可調整大小的紋理立方體

Question

我想要製作一個方法來繪製一個具有指定大小和紋理的立方體。問題是，當我調整立方體的大小時，紋理不會隨着它一起調整大小。例如，如果我以大小.5F繪製，則只有8x8像素的16x16紋理繪製。我究竟做錯了什麼？

static void drawCube(float size, Texture tex, int x, int y, int z) { 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 

    glTranslatef(x, y, z); 

    tex.bind(); 
    glPolygonMode(GL_FRONT, GL_FILL); 

    glBegin(GL_QUADS); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, 1.0f * size); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, 1.0f * size); 
    glEnd(); 

    glBegin(GL_QUADS); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, -1.0f * size); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, -1.0f * size); 
    glEnd(); 

    glBegin(GL_QUADS); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, -1.0f * size); 
    glEnd(); 

    glBegin(GL_QUADS); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, 1.0f * size); 
    glEnd(); 

    glBegin(GL_QUADS); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, -1.0f * size); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, -1.0f * size); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(1.0f * size, 1.0f * size, 1.0f * size); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(1.0f * size, -1.0f * size, 1.0f * size); 
    glEnd(); 


    glBegin(GL_QUADS); 
    glTexCoord2d(0.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, -1.0f * size); 
    glTexCoord2d(1.0f * size, 0.0f * size); 
    glVertex3f(-1.0f * size, -1.0f * size, 1.0f * size); 
    glTexCoord2d(1.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, 1.0f * size); 
    glTexCoord2d(0.0f * size, 1.0f * size); 
    glVertex3f(-1.0f * size, 1.0f * size, -1.0f * size); 
    glEnd(); 

    glTranslatef(-x, -y, -z); 
} 

Answer 1

紋理座標總是使用[0..1]座標系。如果要繪製完整紋理，請不要根據大小縮放紋理座標，即，

glTexCoord2d(1.0f * size, 0.0f * size); // Not good! (For this purpose anyway) 
glTexCoord2d(1.0f, 0.0f); // Good!