source/core/texture.cpp

   1 #include <msp/datafile/rawdata.h>
   2 #include <msp/io/memory.h>
   3 #include "error.h"
   4 #include "resourcemanager.h"
   5 #include "texture.h"
   6 #include "texture1d.h"
   7 #include "texture2d.h"
   8 #include "texture2darray.h"
   9 #include "texture3d.h"
  10 #include "texturecube.h"
  11
  12 using namespace std;
  13
  14 namespace Msp {
  15 namespace GL {
  16
  17 Texture::Texture(unsigned t):
  18         TextureBackend(t)
  19 { }
  20
  21 void Texture::set_format(PixelFormat fmt)
  22 {
  23         PixelComponents comp = get_components(fmt);
  24         ComponentSwizzle swiz = get_required_swizzle(comp);
  25         PixelComponents st_comp = unswizzle_components(comp, swiz);
  26
  27         PixelFormat st_fmt = make_pixelformat(st_comp, get_component_type(fmt), is_srgb(fmt));
  28         require_pixelformat(st_fmt);
  29         if(swiz!=NO_SWIZZLE)
  30                 require_swizzle();
  31
  32         format = fmt;
  33         storage_fmt = st_fmt;
  34         swizzle = swiz;
  35 }
  36
  37 void Texture::load_image(const string &fn, unsigned lv)
  38 {
  39         Graphics::Image img;
  40         img.load_file(fn);
  41
  42         image(img, lv);
  43 }
  44
  45 Texture::GenericLoader::TypeRegistry &Texture::get_texture_registry()
  46 {
  47         static GenericLoader::TypeRegistry registry;
  48         static bool initialized = false;
  49         if(!initialized)
  50         {
  51                 initialized = true;
  52                 registry.register_type<Texture1D>("1d");
  53                 registry.register_type<Texture2D>("2d");
  54                 registry.register_type<Texture3D>("3d");
  55                 registry.register_type<Texture2DArray>("2d_array");
  56                 registry.register_type<TextureCube>("cube");
  57         }
  58         return registry;
  59 }
  60
  61
  62 Texture::Loader::Loader(Texture &t, Collection *c):
  63         CollectionObjectLoader<Texture>(t, c),
  64         levels(0)
  65 {
  66         add("external_data", &Loader::external_data);
  67         add("external_image", &Loader::external_image, false);
  68         add("external_image_srgb", &Loader::external_image, true);
  69         add("generate_mipmap", &Loader::generate_mipmap);
  70         add("image_data", &Loader::image_data);
  71         add("mipmap_levels", &Loader::mipmap_levels);
  72         add("raw_data", &Loader::raw_data);
  73 }
  74
  75 void Texture::Loader::finish()
  76 {
  77         if(obj.auto_gen_mipmap)
  78                 obj.generate_mipmap();
  79 }
  80
  81 void Texture::Loader::load_external_image(Graphics::Image &img, const string &fn)
  82 {
  83         RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
  84         if(!io)
  85                 throw IO::file_not_found(fn);
  86         img.load_io(*io);
  87 }
  88
  89 void Texture::Loader::external_data(const string &fn)
  90 {
  91         if(obj.manager)
  92                 obj.manager->set_resource_location(obj, get_collection(), fn);
  93         else
  94         {
  95                 DataFile::RawData rd;
  96                 rd.open_file(get_collection(), fn);
  97                 rd.load();
  98                 obj.image(0, rd.get_data());
  99         }
 100 }
 101
 102 void Texture::Loader::external_image(bool srgb, const string &fn)
 103 {
 104         obj.use_srgb_format = srgb;
 105         if(obj.manager)
 106                 obj.manager->set_resource_location(obj, get_collection(), fn);
 107         else
 108         {
 109                 Graphics::Image img;
 110                 load_external_image(img, fn);
 111                 obj.image(img, levels);
 112         }
 113 }
 114
 115 void Texture::Loader::generate_mipmap(bool gm)
 116 {
 117         obj.auto_gen_mipmap = gm;
 118 }
 119
 120 void Texture::Loader::image_data(const string &data)
 121 {
 122         if(obj.manager)
 123                 obj.set_manager(0);
 124
 125         Graphics::Image img;
 126         IO::Memory mem(data.data(), data.size());
 127         img.load_io(mem);
 128
 129         obj.image(img, levels);
 130 }
 131
 132 void Texture::Loader::mipmap_levels(unsigned l)
 133 {
 134         levels = l;
 135 }
 136
 137 void Texture::Loader::raw_data(const string &data)
 138 {
 139         if(obj.manager)
 140                 obj.set_manager(0);
 141
 142         obj.image(0, data.data());
 143 }
 144
 145 } // namespace GL
 146 } // namespace Msp