2 #include "environmentmap.h"
9 EnvironmentMap::EnvironmentMap(unsigned s, Renderable &r, Renderable &e):
15 env_tex.storage(RGB, size);
16 env_tex.set_wrap(CLAMP_TO_EDGE);
17 env_tex.set_min_filter(LINEAR);
18 depth_buf.storage(DEPTH_COMPONENT, size, size);
19 for(unsigned i=0; i<6; ++i)
21 fbo[i].attach(COLOR_ATTACHMENT0, env_tex, TextureCube::enumerate_faces(i), 0);
22 fbo[i].attach(DEPTH_ATTACHMENT, depth_buf);
25 // XXX Make the depth range configurable
26 camera.set_field_of_view(M_PI/2);
28 camera.set_depth_clip(0.1, 100);
30 shdata.uniform("environment", 4);
33 void EnvironmentMap::setup_frame() const
39 renderable.setup_frame();
40 environment.setup_frame();
42 const Matrix *matrix = renderable.get_matrix();
43 Vector3 position = (*matrix)*Vector3();
44 camera.set_position(position);
45 for(unsigned i=0; i<6; ++i)
47 TextureCubeFace face = TextureCube::enumerate_faces(i);
48 Bind _bind_fbo(fbo[i]);
49 fbo[i].clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
50 camera.set_look_direction(env_tex.get_face_direction(face));
51 camera.set_up_direction(env_tex.get_t_direction(face));
52 Renderer env_renderer(&camera);
53 env_renderer.exclude(renderable);
54 env_renderer.render(environment);
58 void EnvironmentMap::finish_frame() const
63 renderable.finish_frame();
64 environment.finish_frame();
68 void EnvironmentMap::render(Renderer &renderer, const Tag &tag) const
70 if(!enabled_passes.count(tag))
71 return renderer.render(renderable, tag);
73 const Matrix &view_matrix = renderer.get_camera()->get_matrix();
74 // XXX The camera should maybe have store its own object matrix
76 env_mdata[0] = view_matrix[0];
77 env_mdata[1] = view_matrix[4];
78 env_mdata[2] = view_matrix[8];
79 env_mdata[3] = view_matrix[1];
80 env_mdata[4] = view_matrix[5];
81 env_mdata[5] = view_matrix[9];
82 env_mdata[6] = view_matrix[2];
83 env_mdata[7] = view_matrix[6];
84 env_mdata[8] = view_matrix[10];
85 shdata.uniform_matrix3("env_eye_matrix", env_mdata);
90 Renderer::Push _push_rend(renderer);
91 renderer.add_shader_data(shdata);
92 renderer.render(renderable, tag);
94 env_tex.unbind_from(4);