pinhole_camera.cu

RT_PROGRAM void env_camera()
{
  size_t2 screen = output_buffer.size();
  float2 d = make_float2(launch_index) /
             make_float2(screen) *
             make_float2(2.0f * M_PIf , M_PIf) +
make_float2(M_PIf, 0);
float3 angle = make_float3( cos(d.x) * sin(d.y),
                             -cos(d.y),
                              sin(d.x) * sin(d.y));
float3 ray_origin = eye;
float3 ray_direction = normalize(angle.x*normalize(U) +
                                   angle.y*normalize(V) +
                                   angle.z*normalize(W));
optix::Ray ray(ray_origin, ray_direction, radiance_ray_type, scene_epsilon);
  PerRayData_radiance prd;
  prd.importance = 1.f;
  prd.depth = 0;
  rtTrace(top_object, ray, prd);
output_buffer[launch_index] = make_color( prd.result ); }