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