source/renderpass.cpp

   1 #include <msp/datafile/collection.h>
   2 #include <msp/strings/format.h>
   3 #include "error.h"
   4 #include "material.h"
   5 #include "renderpass.h"
   6 #include "program.h"
   7 #include "programdata.h"
   8 #include "renderer.h"
   9 #include "texture.h"
  10 #include "texture2d.h"
  11 #include "texturing.h"
  12
  13 using namespace std;
  14
  15 namespace Msp {
  16 namespace GL {
  17
  18 RenderPass::RenderPass():
  19         shprog(0),
  20         shdata(0),
  21         material(0),
  22         texturing(0),
  23         back_faces(false)
  24 { }
  25
  26 RenderPass::RenderPass(const RenderPass &other):
  27         shprog(other.shprog),
  28         shdata(other.shdata),
  29         uniform_slots(other.uniform_slots),
  30         material(other.material),
  31         material_slot(other.material_slot),
  32         texturing(other.texturing ? new Texturing(*other.texturing) : 0),
  33         tex_names(other.tex_names),
  34         back_faces(other.back_faces)
  35 { }
  36
  37 RenderPass &RenderPass::operator=(const RenderPass &other)
  38 {
  39         shprog = other.shprog;
  40         shdata = other.shdata;
  41         uniform_slots = other.uniform_slots;
  42         material = other.material;
  43         material_slot = other.material_slot;
  44         texturing = other.texturing ? new Texturing(*other.texturing) : 0;
  45         tex_names = other.tex_names;
  46         back_faces = other.back_faces;
  47         return *this;
  48 }
  49
  50 RenderPass::~RenderPass()
  51 {
  52         delete texturing;
  53 }
  54
  55 void RenderPass::set_shader_program(const Program *prog, const ProgramData *data)
  56 {
  57         shprog = prog;
  58         shdata = (data ? new ProgramData(*data) : 0);
  59 }
  60
  61 const string &RenderPass::get_slotted_uniform_name(const string &slot) const
  62 {
  63         map<string, string>::const_iterator i = uniform_slots.find(slot);
  64         if(i==uniform_slots.end())
  65         {
  66                 static string empty;
  67                 return empty;
  68         }
  69         return i->second;
  70 }
  71
  72 void RenderPass::set_material(const Material *mat)
  73 {
  74         material = mat;
  75         material.keep();
  76 }
  77
  78 void RenderPass::set_texture(unsigned index, const Texture *tex)
  79 {
  80         if(!texturing)
  81                 texturing = new Texturing;
  82
  83         texturing->attach(index, *tex);
  84 }
  85
  86 int RenderPass::get_texture_index(const string &n) const
  87 {
  88         map<string, unsigned>::const_iterator i = tex_names.find(n);
  89         if(i==tex_names.end())
  90                 return -1;
  91         return i->second;
  92 }
  93
  94 void RenderPass::apply(Renderer &renderer) const
  95 {
  96         renderer.set_texturing(texturing);
  97         renderer.set_material(material.get());
  98         renderer.set_shader_program(shprog, shdata.get());
  99         renderer.set_reverse_winding(back_faces);
 100 }
 101
 102
 103 RenderPass::Loader::Loader(RenderPass &p):
 104         DataFile::CollectionObjectLoader<RenderPass>(p, 0)
 105 {
 106         init();
 107 }
 108
 109 RenderPass::Loader::Loader(RenderPass &p, Collection &c):
 110         DataFile::CollectionObjectLoader<RenderPass>(p, &c)
 111 {
 112         init();
 113 }
 114
 115 void RenderPass::Loader::init()
 116 {
 117         add("shader",   &RenderPass::shprog);
 118         add("material", &Loader::material_inline);
 119         add("material", &Loader::material);
 120         add("material_slot", &RenderPass::material_slot);
 121         add("back_faces",&RenderPass::back_faces);
 122         add("texunit",  &Loader::texunit);
 123         add("texunit",  &Loader::texunit_named);
 124         add("uniforms", &Loader::uniforms);
 125         add("uniform_slot", &Loader::uniform_slot);
 126 }
 127
 128 void RenderPass::Loader::material_inline()
 129 {
 130         RefPtr<Material> mat = new Material;
 131         if(coll)
 132                 load_sub(*mat, get_collection());
 133         else
 134                 load_sub(*mat);
 135         obj.material = mat;
 136 }
 137
 138 void RenderPass::Loader::material(const string &name)
 139 {
 140         obj.material = &get_collection().get<Material>(name);
 141         obj.material.keep();
 142 }
 143
 144 void RenderPass::Loader::texunit(unsigned i)
 145 {
 146         if(!obj.texturing)
 147                 obj.texturing = new Texturing;
 148         TextureLoader ldr(*obj.texturing, i, coll);
 149         load_sub_with(ldr);
 150 }
 151
 152 void RenderPass::Loader::texunit_named(unsigned i, const string &n)
 153 {
 154         texunit(i);
 155         obj.tex_names[n] = i;
 156 }
 157
 158 void RenderPass::Loader::uniforms()
 159 {
 160         if(!obj.shprog)
 161                 throw invalid_operation("RenderPass::Loader::uniforms");
 162         RefPtr<ProgramData> shd = new ProgramData(obj.shprog);
 163         load_sub(*shd);
 164         obj.shdata = shd.release();
 165 }
 166
 167 void RenderPass::Loader::uniform_slot(const string &name)
 168 {
 169         uniform_slot2(name, name);
 170 }
 171
 172 void RenderPass::Loader::uniform_slot2(const string &name, const string &slot)
 173 {
 174         obj.uniform_slots[slot] = name;
 175 }
 176
 177
 178 RenderPass::TextureLoader::TextureLoader(Texturing &t, unsigned i, Collection *c):
 179         DataFile::CollectionObjectLoader<Texturing>(t, c),
 180         index(i)
 181 {
 182         add("texture",   &TextureLoader::texture);
 183         add("texture2d", &TextureLoader::texture2d);
 184 }
 185
 186 void RenderPass::TextureLoader::finish()
 187 {
 188         if(tex)
 189         {
 190                 obj.attach(index, *tex);
 191                 tex.release();
 192         }
 193 }
 194
 195 void RenderPass::TextureLoader::texture(const string &name)
 196 {
 197         tex = &get_collection().get<Texture>(name);
 198         tex.keep();
 199 }
 200
 201 void RenderPass::TextureLoader::texture2d()
 202 {
 203         tex = new Texture2D;
 204         if(coll)
 205                 load_sub(static_cast<Texture2D &>(*tex), get_collection());
 206         else
 207                 load_sub(static_cast<Texture2D &>(*tex));
 208 }
 209
 210 } // namespace GL
 211 } // namespace Msp