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         load_sub(*mat);
 106         obj.material = mat;
 107 }
 108
 109 void RenderPass::Loader::material(const string &name)
 110 {
 111         obj.material = &get_collection().get<Material>(name);
 112         obj.material.keep();
 113 }
 114
 115 void RenderPass::Loader::texunit(unsigned i)
 116 {
 117         if(!obj.texturing)
 118                 obj.texturing = new Texturing;
 119         TextureLoader ldr(*obj.texturing, i, coll);
 120         load_sub_with(ldr);
 121 }
 122
 123 void RenderPass::Loader::texunit_named(unsigned i, const string &n)
 124 {
 125         texunit(i);
 126         obj.tex_names[n] = i;
 127 }
 128
 129 void RenderPass::Loader::uniforms()
 130 {
 131         if(!obj.shprog)
 132                 throw invalid_operation("RenderPass::Loader::uniforms");
 133         RefPtr<ProgramData> shd = new ProgramData;
 134         load_sub(*shd);
 135         obj.shdata = shd;
 136 }
 137
 138
 139 RenderPass::TextureLoader::TextureLoader(Texturing &t, unsigned i, Collection *c):
 140         DataFile::CollectionObjectLoader<Texturing>(t, c),
 141         index(i)
 142 {
 143         add("texture",   &TextureLoader::texture);
 144         add("texture2d", &TextureLoader::texture2d);
 145 }
 146
 147 void RenderPass::TextureLoader::finish()
 148 {
 149         if(tex)
 150         {
 151                 if(env)
 152                         obj.attach(index, *tex, *env);
 153                 else
 154                         obj.attach(index, *tex);
 155                 tex.release();
 156                 env.release();
 157         }
 158 }
 159
 160 void RenderPass::TextureLoader::texenv()
 161 {
 162         throw runtime_error("TexEnvs can't be loaded yet");
 163         /*env = new TexEnv;
 164         load_sub(*env);*/
 165 }
 166
 167 void RenderPass::TextureLoader::texture(const string &name)
 168 {
 169         tex = &get_collection().get<Texture>(name);
 170         tex.keep();
 171 }
 172
 173 void RenderPass::TextureLoader::texture2d()
 174 {
 175         tex = new Texture2D;
 176         load_sub(static_cast<Texture2D &>(*tex));
 177 }
 178
 179 } // namespace GL
 180 } // namespace Msp