source/materials/material.cpp

   1 #include <msp/core/hash.h>
   2 #include <msp/strings/format.h>
   3 #include "basicmaterial.h"
   4 #include "gl.h"
   5 #include "pbrmaterial.h"
   6 #include "resources.h"
   7 #include "texturing.h"
   8 #include "uniform.h"
   9 #include "unlitmaterial.h"
  10
  11 using namespace std;
  12
  13 namespace Msp {
  14 namespace GL {
  15
  16 const Program *Material::create_compatible_shader(DataFile::Collection &coll) const
  17 {
  18         string module_name;
  19         map<string, int> spec_values;
  20         fill_program_info(module_name, spec_values);
  21
  22         string info = module_name;
  23         for(map<string, int>::const_iterator i=spec_values.begin(); i!=spec_values.end(); ++i)
  24                 info += format(",%s:%d", i->first, i->second);
  25
  26         string name = format("_material_%016x.shader", hash64(info));
  27         Program *shprog = coll.find<Program>(name);
  28         if(shprog)
  29                 return shprog;
  30
  31         const Module &module = coll.get<Module>(module_name);
  32         shprog = new Program(module, spec_values);
  33         try
  34         {
  35                 coll.add(name, shprog);
  36         }
  37         catch(...)
  38         {
  39                 delete shprog;
  40                 throw;
  41         }
  42
  43         return shprog;
  44 }
  45
  46 void Material::attach_texture_to(const Texture *tex, Texturing &texturing, ProgramData &tex_shdata, const string &name) const
  47 {
  48         if(!tex)
  49                 return;
  50
  51         int unit = -1;
  52
  53         if(const Uniform *uni = tex_shdata.find_uniform(name))
  54                 if(const Uniform1i *uni_int = dynamic_cast<const Uniform1i *>(uni))
  55                         unit = uni_int->get();
  56
  57         if(unit<0)
  58                 unit = texturing.find_free_unit(name);
  59         if(unit<0)
  60                 throw runtime_error("no free texunit");
  61
  62         texturing.attach(unit, *tex, sampler);
  63         tex_shdata.uniform(name, unit);
  64 }
  65
  66 Material::MaterialRegistry &Material::get_material_registry()
  67 {
  68         static MaterialRegistry registry;
  69         static bool initialized = false;
  70         if(!initialized)
  71         {
  72                 initialized = true;
  73                 registry.register_type<BasicMaterial>("basic");
  74                 registry.register_type<PbrMaterial>("pbr");
  75                 registry.register_type<UnlitMaterial>("unlit");
  76         }
  77         return registry;
  78 }
  79
  80
  81 Material::Loader::Loader(Material &m):
  82         CollectionObjectLoader(m, 0)
  83 { }
  84
  85 Material::Loader::Loader(Material &m, Collection &c):
  86         CollectionObjectLoader(m, &c)
  87 { }
  88
  89 void Material::Loader::init_actions()
  90 {
  91         add("sampler", &Loader::sampler);
  92 }
  93
  94 void Material::Loader::sampler(const string &name)
  95 {
  96         obj.sampler = &get_collection().get<Sampler>(name);
  97 }
  98
  99
 100 DataFile::Loader::ActionMap Material::GenericLoader::shared_actions;
 101
 102 Material::GenericLoader::GenericLoader(DataFile::Collection *c):
 103         coll(c)
 104 {
 105         set_actions(shared_actions);
 106 }
 107
 108 void Material::GenericLoader::init_actions()
 109 {
 110         get_material_registry().add_all(*this);
 111 }
 112
 113 } // namespace GL
 114 } // namespace Msp