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 "texenv.h"
  10 #include "texture.h"
  11 #include "texture2d.h"
  12 #include "texturing.h"
  13
  14 using namespace std;
  15
  16 namespace Msp {
  17 namespace GL {
  18
  19 RenderPass::RenderPass():
  20         shprog(0),
  21         shdata(0),
  22         material(0),
  23         texturing(0),
  24         back_faces(false)
  25 { }
  26
  27 RenderPass::RenderPass(const RenderPass &other):
  28         shprog(other.shprog),
  29         shdata(other.shdata ? new ProgramData(*other.shdata) : 0),
  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()
  37 {
  38         delete texturing;
  39 }
  40
  41 void RenderPass::set_shader_program(const Program *prog, const ProgramData *data)
  42 {
  43         shprog = prog;
  44         shdata = data;
  45         shdata.keep();
  46 }
  47
  48 void RenderPass::set_material(const Material *mat)
  49 {
  50         material = mat;
  51         material.keep();
  52 }
  53
  54 void RenderPass::set_texture(unsigned index, const Texture *tex)
  55 {
  56         if(!texturing)
  57                 texturing = new Texturing;
  58
  59         texturing->attach(index, *tex);
  60 }
  61
  62 int RenderPass::get_texture_index(const string &n) const
  63 {
  64         map<string, unsigned>::const_iterator i = tex_names.find(n);
  65         if(i==tex_names.end())
  66                 return -1;
  67         return i->second;
  68 }
  69
  70 void RenderPass::apply(Renderer &renderer) const
  71 {
  72         renderer.set_texturing(texturing);
  73         renderer.set_material(material.get());
  74         renderer.set_shader_program(shprog, shdata.get());
  75         renderer.set_reverse_winding(back_faces);
  76 }
  77
  78
  79 RenderPass::Loader::Loader(RenderPass &p):
  80         DataFile::CollectionObjectLoader<RenderPass>(p, 0)
  81 {
  82         init();
  83 }
  84
  85 RenderPass::Loader::Loader(RenderPass &p, Collection &c):
  86         DataFile::CollectionObjectLoader<RenderPass>(p, &c)
  87 {
  88         init();
  89 }
  90
  91 void RenderPass::Loader::init()
  92 {
  93         add("shader",   &RenderPass::shprog);
  94         add("material", &Loader::material_inline);
  95         add("material", &Loader::material);
  96         add("back_faces",&RenderPass::back_faces);
  97         add("texunit",  &Loader::texunit);
  98         add("texunit",  &Loader::texunit_named);
  99         add("uniforms", &Loader::uniforms);
 100 }
 101
 102 void RenderPass::Loader::material_inline()
 103 {
 104         RefPtr<Material> mat = new Material;
 105         if(coll)
 106                 load_sub(*mat, get_collection());
 107         else
 108                 load_sub(*mat);
 109         obj.material = mat;
 110 }
 111
 112 void RenderPass::Loader::material(const string &name)
 113 {
 114         obj.material = &get_collection().get<Material>(name);
 115         obj.material.keep();
 116 }
 117
 118 void RenderPass::Loader::texunit(unsigned i)
 119 {
 120         if(!obj.texturing)
 121                 obj.texturing = new Texturing;
 122         TextureLoader ldr(*obj.texturing, i, coll);
 123         load_sub_with(ldr);
 124 }
 125
 126 void RenderPass::Loader::texunit_named(unsigned i, const string &n)
 127 {
 128         texunit(i);
 129         obj.tex_names[n] = i;
 130 }
 131
 132 void RenderPass::Loader::uniforms()
 133 {
 134         if(!obj.shprog)
 135                 throw invalid_operation("RenderPass::Loader::uniforms");
 136         RefPtr<ProgramData> shd = new ProgramData;
 137         load_sub(*shd);
 138         obj.shdata = shd;
 139 }
 140
 141
 142 RenderPass::TextureLoader::TextureLoader(Texturing &t, unsigned i, Collection *c):
 143         DataFile::CollectionObjectLoader<Texturing>(t, c),
 144         index(i)
 145 {
 146         add("texture",   &TextureLoader::texture);
 147         add("texture2d", &TextureLoader::texture2d);
 148 }
 149
 150 void RenderPass::TextureLoader::finish()
 151 {
 152         if(tex)
 153         {
 154                 if(env)
 155                         obj.attach(index, *tex, *env);
 156                 else
 157                         obj.attach(index, *tex);
 158                 tex.release();
 159                 env.release();
 160         }
 161 }
 162
 163 void RenderPass::TextureLoader::texenv()
 164 {
 165         throw runtime_error("TexEnvs can't be loaded yet");
 166         /*env = new TexEnv;
 167         load_sub(*env);*/
 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