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