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