我有一个工作顶点缓冲区对象,但我需要添加法线。法线存储在与顶点位置相同的数组中。它们是交错的
Vx Vy Vz Nx Ny Nz
到目前为止,这是我的代码:
GLfloat 值[NUM_POINTS*3 + NUM_POINTS*3];无效初始化场景(){
for(int i = 0; i < (NUM_POINTS) ; i = i+6){
values[i+0] = bunny[i];
values[i+1] = bunny[i+1];
values[i+2] = bunny[i+2];
values[i+3] = normals[i];
values[i+4] = normals[i+1];
values[i+5] = normals[i+2];
}
glGenVertexArrays(1,&bunnyVAO);
glBindVertexArray(bunnyVAO);
glGenBuffers(1, &bunnyVBO);
glBindBuffer(GL_ARRAY_BUFFER, bunnyVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(bunny), bunny, GL_STATIC_DRAW);
glVertexAttribPointer(0,3, GL_FLOAT, GL_FALSE, 0,0);
glEnableVertexAttribArray(0);
glGenBuffers(1, &bunnyIBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bunnyIBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(triangles), triangles, GL_STATIC_DRAW);
// unbind active buffers //
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
void renderScene() {
if (bunnyVBO != 0) {
// x: bind VAO //
glEnableClientState(GL_VERTEX_ARRAY);
glBindVertexArray(bunnyVAO);
glDrawElements(GL_TRIANGLES, NUM_TRIANGLES, GL_UNSIGNED_INT, NULL);
glDisableClientState(GL_VERTEX_ARRAY);
// unbind active buffers //
glBindVertexArray(0);
}
}
我可以在屏幕上看到一些东西,但这是不正确的,因为没有正确使用法线......到目前为止,我如何使用与我的代码正确连接的值数组。