void generate_geometries(vector<Geometry*>& geometries) {
num_triangles = 0;
num_object = geometries.size();
for (int i = 0; i < num_object; ++i)
num_triangles += geometries[i]->vertex.size() / 3;
float* vertex_buffer = new float[num_triangles * 9];
float* normal_buffer = new float[num_triangles * 9];
float* tex_buffer = new float[num_triangles * 6];
float* index_buffer = new float[num_triangles];
float* material = new float[21 * num_object];
float* v_ptr = vertex_buffer, *n_ptr = normal_buffer, *m_ptr = material, *t_ptr = tex_buffer;
int s = 0;
for (int i = 0; i < num_object; ++i) {
if (use_bvh) {
geometries[i]->applyTransform();
memcpy(v_ptr, geometries[i]->t_vertex.data(), geometries[i]->t_vertex.size() * 3 * sizeof(float));
v_ptr += geometries[i]->vertex.size() * 3;
memcpy(n_ptr, geometries[i]->t_normal.data(), geometries[i]->t_normal.size() * 3 * sizeof(float));
n_ptr += geometries[i]->t_normal.size() * 3;
} else {
memcpy(v_ptr, geometries[i]->vertex.data(), geometries[i]->vertex.size() * 3 * sizeof(float));
v_ptr += geometries[i]->vertex.size() * 3;
memcpy(n_ptr, geometries[i]->normal.data(), geometries[i]->normal.size() * 3 * sizeof(float));
n_ptr += geometries[i]->normal.size() * 3;
}
memcpy(t_ptr, geometries[i]->uv.data(), geometries[i]->uv.size() * 2 * sizeof(float));
t_ptr += geometries[i]->uv.size() * 2;
*m_ptr++ = geometries[i]->kd;
*m_ptr++ = geometries[i]->ks;
*m_ptr++ = geometries[i]->tex;
*m_ptr++ = geometries[i]->offset.x;
*m_ptr++ = geometries[i]->offset.y;
*m_ptr++ = geometries[i]->offset.z;
*m_ptr++ = geometries[i]->x_axis.x;
*m_ptr++ = geometries[i]->x_axis.y;
*m_ptr++ = geometries[i]->x_axis.z;
*m_ptr++ = geometries[i]->y_axis.x;
*m_ptr++ = geometries[i]->y_axis.y;
*m_ptr++ = geometries[i]->y_axis.z;
*m_ptr++ = geometries[i]->s.x;
*m_ptr++ = geometries[i]->s.y;
*m_ptr++ = geometries[i]->s.z;
for (int j = s / 3; j < s / 3 + geometries[i]->vertex.size() / 3; ++j)
index_buffer[j] = i;
s += geometries[i]->vertex.size();
*m_ptr++ = s;
*m_ptr++ = geometries[i]->ka;
*m_ptr++ = geometries[i]->kr;
*m_ptr++ = geometries[i]->kf;
*m_ptr++ = geometries[i]->nr;
*m_ptr++ = geometries[i]->alpha;
}
BVH* bvh = new BVH(vertex_buffer, normal_buffer, tex_buffer, index_buffer, num_triangles);
vector<float> bvh_buffer;
bvh->genBuffer(bvh_buffer);
mesh_texture = create_texture_2D(vertex_buffer, 9, num_triangles, mesh_texture);
normal_texture = create_texture_2D(normal_buffer, 9, num_triangles, normal_texture);
material_texture = create_texture_2D(material, 21, num_object, material_texture);
tex_texture = create_texture_2D(tex_buffer, 6, num_triangles, tex_texture);
index_texture = create_texture(index_buffer, num_triangles, index_texture);
bvh_texture = create_texture_2D(bvh_buffer.data(), 11, bvh_buffer.size() / 11, bvh_texture);
sampler_texture = create_texture(samples, 2 * SAMPLE_SIZE * SAMPLE_SIZE + 2, sampler_texture);
num_bvh = bvh_buffer.size() / 11;
delete[] vertex_buffer;
delete[] normal_buffer;
delete[] tex_buffer;
delete[] material;
}
