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