2 #include <msp/strings/format.h>
16 Bloom::Bloom(unsigned w, unsigned h):
17 blur_shader("bloom_blur.glsl"),
18 combine_shader("bloom_combine.glsl"),
19 quad(get_fullscreen_quad()),
20 nearest_sampler(get_nearest_sampler()),
21 linear_sampler(get_linear_sampler())
23 blur_shdata[0].uniform("delta", 1.0f/w, 0.0f);
24 blur_shdata[1].uniform("delta", 0.0f, 1.0f/h);
26 for(unsigned i=0; i<2; ++i)
27 target[i] = new RenderTarget(w, h, (RENDER_COLOR,RGB16F));
29 common_shdata.uniform("source", 0);
30 common_shdata.uniform("blurred", 1);
32 combine_texturing.attach(1, target[1]->get_target_texture(RENDER_COLOR), linear_sampler.get());
40 for(unsigned i=0; i<2; ++i)
44 void Bloom::set_radius(float r)
47 throw invalid_argument("Bloom::set_radius");
49 int size = min(static_cast<int>(r*3.0f), 9);
50 common_shdata.uniform("size", size);
52 vector<float> factors(size*2+1);
55 for(int i=-size; i<=size; ++i)
56 sum += (factors[size+i] = exp(-i*i/r));
57 for(int i=0; i<=size*2; ++i)
60 common_shdata.uniform1_array("factors", size*2+1, &factors.front());
63 void Bloom::set_strength(float s)
66 throw invalid_argument("Bloom::set_strength");
67 common_shdata.uniform("strength", s);
70 void Bloom::render(Renderer &renderer, const Texture2D &src, const Texture2D &)
72 Renderer::Push push(renderer);
73 renderer.set_shader_program(&blur_shader, &common_shdata);
74 for(unsigned i=0; i<2; ++i)
76 BindRestore bind_fbo(target[i]->get_framebuffer());
77 Renderer::Push push2(renderer);
78 renderer.set_texture(i ? &target[0]->get_target_texture(RENDER_COLOR) : &src, nearest_sampler.get());
79 renderer.add_shader_data(blur_shdata[i]);
83 combine_texturing.attach(0, src, nearest_sampler.get());
84 renderer.set_texturing(&combine_texturing);
85 renderer.set_shader_program(&combine_shader);
90 Bloom::Template::Template():
95 Bloom *Bloom::Template::create(unsigned width, unsigned height) const
97 RefPtr<Bloom> bloom = new Bloom(width/size_divisor, height/size_divisor);
98 bloom->set_radius(radius);
99 bloom->set_strength(strength);
100 return bloom.release();
104 Bloom::Template::Loader::Loader(Template &t):
105 DataFile::DerivedObjectLoader<Template, PostProcessor::Template::Loader>(t)
107 add("strength", &Template::strength);
108 add("radius", &Template::radius);