#include <algorithm>
#include <cmath>
+#include <msp/core/raii.h>
+#include <msp/strings/format.h>
#include "environmentmap.h"
+#include "error.h"
+#include "mesh.h"
#include "renderer.h"
#include "resources.h"
-#include "texunit.h"
using namespace std;
namespace Msp {
namespace GL {
-EnvironmentMap::EnvironmentMap(Resources &resources, unsigned s, Renderable &r, Renderable &e):
- Effect(r),
- environment(e),
- sampler(resources.get<Sampler>("_linear_clamp.samp"))
-{
- init(s, RGB8);
-}
+EnvironmentMap::EnvironmentMap(unsigned s, PixelFormat f, Renderable &c, Renderable &e):
+ EnvironmentMap(s, f, 1, c, e)
+{ }
-EnvironmentMap::EnvironmentMap(Resources &resources, unsigned s, PixelFormat f, Renderable &r, Renderable &e):
- Effect(r),
+EnvironmentMap::EnvironmentMap(unsigned s, PixelFormat f, unsigned l, Renderable &c, Renderable &e):
+ Effect(c),
+ size(s),
environment(e),
- sampler(resources.get<Sampler>("_linear_clamp.samp"))
+ irradiance_shprog(Resources::get_global().get<Program>("_envmap_irradiance.glsl.shader")),
+ specular_shprog(Resources::get_global().get<Program>("_envmap_specular.glsl.shader")),
+ fullscreen_mesh(Resources::get_global().get<Mesh>("_fullscreen_quad.mesh")),
+ sampler(Resources::get_global().get<Sampler>("_linear_clamp.samp")),
+ mip_sampler(Resources::get_global().get<Sampler>("_mip_clamp.samp"))
{
- init(s, f);
-}
-
-void EnvironmentMap::init(unsigned s, PixelFormat f)
-{
- size = s;
- rendered = false;
- update_interval = 1;
- update_delay = 0;
+ if(!l || (1U<<(l-1))>=s)
+ throw invalid_argument("EnvironmentMap::EnvironmentMap");
- env_tex.storage(f, size);
- depth_buf.storage(DEPTH_COMPONENT32F, size, size);
+ env_tex.storage(f, size, l);
+ depth_buf.storage(DEPTH_COMPONENT32F, size, size, 1);
for(unsigned i=0; i<6; ++i)
{
- TextureCubeFace face = TextureCube::enumerate_faces(i);
- faces[i].fbo.attach(COLOR_ATTACHMENT0, env_tex, face, 0);
+ TextureCubeFace face = static_cast<TextureCubeFace>(i);
+ faces[i].fbo.set_format((COLOR_ATTACHMENT,f, DEPTH_ATTACHMENT,DEPTH_COMPONENT32F));
+ faces[i].fbo.attach(COLOR_ATTACHMENT, env_tex, face, 0);
faces[i].fbo.attach(DEPTH_ATTACHMENT, depth_buf);
- faces[i].fbo.require_complete();
faces[i].camera.set_look_direction(TextureCube::get_face_direction(face));
faces[i].camera.set_up_direction(TextureCube::get_t_direction(face));
faces[i].camera.set_field_of_view(Geometry::Angle<float>::right());
faces[i].camera.set_aspect_ratio(1);
faces[i].camera.set_depth_clip(0.1, 100);
}
+
+ irradiance.storage(f, size/4, 1);
+ irradiance_fbo.set_format((COLOR_ATTACHMENT,f));
+ irradiance_fbo.attach_layered(COLOR_ATTACHMENT, irradiance);
+
+ if(l>1)
+ {
+ specular_fbos.resize(l-1);
+ for(unsigned i=0; i+1<l; ++i)
+ {
+ specular_fbos[i].set_format((COLOR_ATTACHMENT,f));
+ specular_fbos[i].attach_layered(COLOR_ATTACHMENT, env_tex, i+1);
+ }
+
+ LinAl::Matrix<float, 3, 3> face_matrices[6];
+ for(unsigned i=0; i<6; ++i)
+ {
+ GL::TextureCubeFace face = static_cast<TextureCubeFace>(i);
+ GL::Vector3 columns[3];
+ columns[0] = GL::TextureCube::get_s_direction(face);
+ columns[1] = GL::TextureCube::get_t_direction(face);
+ columns[2] = GL::TextureCube::get_face_direction(face);
+ face_matrices[i] = LinAl::Matrix<float, 3, 3>::from_columns(columns);
+ }
+
+ prefilter_shdata.uniform_array("faces", 6, &face_matrices[0]);
+ prefilter_shdata.uniform("n_samples", 128);
+ prefilter_shdata.uniform("roughness", 1.0f);
+ }
+
+ shdata.uniform("env_world_matrix", LinAl::Matrix<float, 3, 3>::identity());
+}
+
+void EnvironmentMap::set_fixed_position(const Vector3 &p)
+{
+ fixed_position = p;
+ use_fixed_pos = true;
}
void EnvironmentMap::set_depth_clip(float n, float f)
return;
rendered = true;
- renderable.setup_frame(renderer);
+ content.setup_frame(renderer);
if(update_delay)
{
update_delay = update_interval-1;
environment.setup_frame(renderer);
- const Matrix *matrix = renderable.get_matrix();
- if(!matrix)
- return;
+ SetFlag set_in(in_setup_frame);
- Renderer::Push push(renderer);
- Renderer::Exclude exclude1(renderer, renderable);
- Renderer::Exclude exclude2(renderer, *this);
+ Vector3 center;
+ if(use_fixed_pos)
+ center = fixed_position;
+ else
+ {
+ const Matrix *matrix = content.get_matrix();
+ if(!matrix)
+ return;
- Vector3 center = matrix->column(3).slice<3>(0);
+ center = matrix->column(3).slice<3>(0);
+ }
+
+ Renderer::Push push(renderer);
- BindRestore bind_fbo(faces[0].fbo);
for(unsigned i=0; i<6; ++i)
{
faces[i].camera.set_position(center);
- faces[i].fbo.bind();
- faces[i].fbo.clear();
+ renderer.set_framebuffer(&faces[i].fbo);
renderer.set_camera(faces[i].camera);
- renderer.render(environment);
+ environment.render(renderer);
+ }
+
+ renderer.set_pipeline_key(this);
+ renderer.set_framebuffer(&irradiance_fbo);
+ renderer.set_shader_program(&irradiance_shprog, &prefilter_shdata);
+ renderer.set_texture("environment_map", &env_tex, 0, &sampler);
+ fullscreen_mesh.draw(renderer);
+
+ renderer.set_shader_program(&specular_shprog);
+ for(unsigned i=0; i<specular_fbos.size(); ++i)
+ {
+ prefilter_shdata.uniform("roughness", 1.0f-sqrt(1.0f-static_cast<float>(i+1)/specular_fbos.size()));
+ renderer.set_pipeline_key(this, 1+i);
+ renderer.set_framebuffer(&specular_fbos[i]);
+ fullscreen_mesh.draw(renderer);
}
}
if(rendered)
{
rendered = false;
- renderable.finish_frame();
+ content.finish_frame();
environment.finish_frame();
}
}
void EnvironmentMap::render(Renderer &renderer, Tag tag) const
{
- if(!enabled_passes.count(tag))
- return renderer.render(renderable, tag);
+ if(in_setup_frame)
+ return;
+ if(!is_enabled_for_method(tag))
+ return content.render(renderer, tag);
Renderer::Push _push_rend(renderer);
- const Matrix &camera_matrix = renderer.get_camera()->get_object_matrix();
- shdata.uniform("env_eye_matrix", camera_matrix.block<3, 3>(0, 0));
-
- renderer.set_texture("environment_map", &env_tex, &sampler);
+ renderer.set_texture("environment_map", &env_tex, &mip_sampler);
+ renderer.set_texture("irradiance_map", &irradiance, &sampler);
renderer.add_shader_data(shdata);
- renderer.render(renderable, tag);
+ content.render(renderer, tag);
+}
+
+void EnvironmentMap::set_debug_name(const string &name)
+{
+#ifdef DEBUG
+ env_tex.set_debug_name(name+"/environment.tex");
+ depth_buf.set_debug_name(name+"/environment_depth.rbuf");
+ static const char *const face_names[] = { "X+", "X-", "Y+", "Y-", "Z+", "Z-" };
+ for(unsigned i=0; i<6; ++i)
+ {
+ faces[i].fbo.set_debug_name(format("%s [FBO:%s]", name, face_names[i]));
+ faces[i].camera.set_debug_name(format("%s/%s.camera", name, face_names[i]));
+ }
+
+ irradiance.set_debug_name(name+"/irradiance.tex");
+ irradiance_fbo.set_debug_name(name+" [FBO:irradiance]");
+ for(unsigned i=0; i<specular_fbos.size(); ++i)
+ specular_fbos[i].set_debug_name(format("%s [FBO:specular_mip%d]", name, i+1));
+ prefilter_shdata.set_debug_name(name+" [UBO:prefilter]");
+ shdata.set_debug_name(name+" [UBO]");
+#else
+ (void)name;
+#endif
+}
+
+
+EnvironmentMap *EnvironmentMap::Template::create(const map<string, Renderable *> &renderables) const
+{
+ Renderable *content = get_item(renderables, content_name);
+ Renderable *environment = get_item(renderables, environment_name);
+ if(!content || !environment)
+ throw invalid_operation("EnvironmentMap::Template::create");
+
+ RefPtr<EnvironmentMap> env_map = new EnvironmentMap(size, format, roughness_levels, *content, *environment);
+ if(use_fixed_position)
+ env_map->set_fixed_position(fixed_position);
+ env_map->set_depth_clip(near_clip, far_clip);
+
+ create_base(*env_map);
+
+ return env_map.release();
+}
+
+
+DataFile::Loader::ActionMap EnvironmentMap::Template::Loader::shared_actions;
+
+EnvironmentMap::Template::Loader::Loader(Template &t, Collection &c):
+ DerivedObjectLoader<Template, Effect::Template::Loader>(t, c)
+{
+ set_actions(shared_actions);
+}
+
+void EnvironmentMap::Template::Loader::init_actions()
+{
+ Effect::Template::Loader::init_actions();
+ add("depth_clip", &Template::near_clip, &Template::far_clip);
+ add("environment", &Template::environment_name);
+ add("fixed_position", &Loader::fixed_position);
+ add("format", &Template::format);
+ add("roughness_levels", &Template::roughness_levels);
+ add("size", &Template::size);
+}
+
+void EnvironmentMap::Template::Loader::fixed_position(float x, float y, float z)
+{
+ obj.fixed_position = Vector3(x, y, z);
+ obj.use_fixed_position = true;
}
} // namespace GL
projects / libs / gl.git / blobdiff