带显示列表的java OpenGL照明
我正在使用JOGL库开发一些OpenGL游戏
当我定期绘制对象时,例如在显示方法中直接使用GL_四边形,场景照明将显示在对象上
但是,当我在init方法中准备对象并在显示列表中使用glCallList加载时,这些对象似乎不会受到照明的影响
准确地说,它们在某些方面受到影响:更改MaterialCV函数参数或环境参数会使场景变亮或变暗,但我尝试漫反射的颜色不起作用(仅适用于没有列表的常规绘制对象)
代码
以下是照明代码:
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
gl.glShadeModel(GL2.GL_SMOOTH); // Enable Smooth Shading
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Black Background
gl.glClearDepth(1.0f); // Depth Buffer Setup
gl.glEnable(GL2.GL_DEPTH_TEST); // Enables Depth Testing
gl.glDepthFunc(GL2.GL_LEQUAL); // The Type Of Depth Testing To Do
glu = new GLU();
// Really Nice Perspective Calculations
gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST);
// Light
float ambient[] = {0.1f,0.1f,0.1f,1.0f};
float diffuse0[] = {1f,0f,0f,1.0f};
float diffuse1[] = {0f,0f,1f,1.0f};
gl.glShadeModel(GL2.GL_SMOOTH);
gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_AMBIENT, ambient, 0);
gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_DIFFUSE, diffuse0, 0);
gl.glEnable(GL2.GL_LIGHT0);
gl.glLightfv(GL2.GL_LIGHT1, GL2.GL_AMBIENT, ambient, 0);
gl.glLightfv(GL2.GL_LIGHT1, GL2.GL_DIFFUSE, diffuse1, 0);
gl.glEnable(GL2.GL_LIGHT1);
gl.glEnable(GL2.GL_LIGHTING);
// make display lists here...
显示器的照明部分:
// display method...
// apply light
float position0[] = {500, 300, 3500,1.0f};
float position1[] = {500, 300, 500,1.0f};
gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_POSITION, position0, 0);
gl.glLightfv(GL2.GL_LIGHT1, GL2.GL_POSITION, position1, 0);
// draw objects directly
// draw objects using glCallLists
下面是我如何在显示方法中绘制常规对象的示例:
gl.glPushMatrix();
gl.glTranslatef(1000, 500, 2000);
gl.glTexParameteri ( GL.GL_TEXTURE_2D,GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT );
gl.glTexParameteri( GL.GL_TEXTURE_2D,GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT );
float material[] = {0.8f,0.8f,0.8f,1.0f};
gl.glMaterialfv(GL2.GL_FRONT_AND_BACK, GL2.GL_AMBIENT_AND_DIFFUSE, material, 0);
gl.glBegin(GL2.GL_QUADS);
// Front Face
gl.glNormal3f(0,0,1);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(2f, 0.0f);
gl.glVertex3f(1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(2f, 1.0f);
gl.glVertex3f(1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(-1.0f, 1.0f, 1.0f);
// Back Face
gl.glNormal3f(0,0,-1);
gl.glTexCoord2f(1.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 1.0f);
gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(1.0f, -1.0f, -1.0f);
// Top Face
gl.glNormal3f(0,1,0);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f);
gl.glVertex3f(1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f);
gl.glVertex3f(1.0f, 1.0f, -1.0f);
// Bottom Face
gl.glNormal3f(0,-1,0);
gl.glTexCoord2f(1.0f, 1.0f);
gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, 1.0f);
// Right face
gl.glNormal3f(1,0,0);
gl.glTexCoord2f(1.0f, 0.0f);
gl.glVertex3f(1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 1.0f);
gl.glVertex3f(1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(1.0f, -1.0f, 1.0f);
// Left Face
gl.glNormal3f(-1,0,0);
gl.glTexCoord2f(0.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f);
gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f);
gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glEnd();
gl.glPopMatrix();
Here's the class I use to load obj files.
我使用loadWavefrontObjectAsDisplayList方法,它接受obj文件的路径,然后返回列表整数
另一编辑:
场景(灯亮,板条箱不亮):
# 1 楼答案
板条箱模型的波前OBJ文件中可能缺少法线
然后,您使用的OBJ导入器生成坐标为(0,0,0)的完全错误的法线,它没有机会使用闪电