1 #include <msp/datafile/collection.h>
2 #include <msp/io/memory.h>
3 #include <msp/strings/format.h>
5 #include "texturecube.h"
12 const Vector3 TextureCube::directions[6] =
22 const unsigned TextureCube::orientations[12] =
32 TextureCube::TextureCube():
36 void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
40 if(fmt!=format || sz!=size || (lv && lv!=levels))
41 throw incompatible_data("TextureCube::storage");
45 throw invalid_argument("TextureCube::storage");
49 levels = get_n_levels();
51 levels = min(levels, lv);
56 void TextureCube::image(TextureCubeFace face, unsigned level, const void *data)
58 unsigned lsz = get_level_size(level);
59 return sub_image(face, level, 0, 0, lsz, lsz, data);
62 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
65 throw invalid_operation("TextureCube::sub_image");
67 throw out_of_range("TextureCube::sub_image");
69 TextureCubeBackend::sub_image(face, level, x, y, wd, ht, data);
72 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img)
74 unsigned w = img.get_width();
75 unsigned h = img.get_height();
77 throw incompatible_data("TextureCube::image");
79 storage(pixelformat_from_image(img, use_srgb_format), w);
80 image(face, 0, img.get_pixels());
83 void TextureCube::image(const Graphics::Image &img, unsigned lv)
85 unsigned w = img.get_width();
86 unsigned h = img.get_height();
89 throw incompatible_data("TextureCube::image");
93 storage(pixelformat_from_image(img, use_srgb_format), w, lv);
94 else if(w!=size || h!=size)
95 throw incompatible_data("TextureCube::image");
97 const char *pixels = reinterpret_cast<const char *>(img.get_pixels());
98 unsigned face_size = img.get_stride()*size;
99 for(unsigned i=0; i<6; ++i)
100 image(static_cast<TextureCubeFace>(i), 0, pixels+i*face_size);
103 unsigned TextureCube::get_n_levels() const
106 for(unsigned s=size; s; s>>=1, ++n) ;
110 unsigned TextureCube::get_level_size(unsigned level) const
115 const Vector3 &TextureCube::get_face_direction(TextureCubeFace face)
117 return directions[face];
120 const Vector3 &TextureCube::get_s_direction(TextureCubeFace face)
122 return directions[orientations[face*2]];
125 const Vector3 &TextureCube::get_t_direction(TextureCubeFace face)
127 return directions[orientations[face*2+1]];
130 Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsigned v)
132 float s = (u+0.5f)*2.0f/size-1.0f;
133 float t = (v+0.5f)*2.0f/size-1.0f;
134 const Vector3 &fv = get_face_direction(face);
135 const Vector3 &sv = get_s_direction(face);
136 const Vector3 &tv = get_t_direction(face);
140 uint64_t TextureCube::get_data_size() const
142 return id ? size*size*6*get_pixel_size(storage_fmt) : 0;
146 TextureCube::Loader::Loader(TextureCube &t):
147 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t)
152 TextureCube::Loader::Loader(TextureCube &t, Collection &c):
153 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t, c)
158 void TextureCube::Loader::init()
160 add("external_image", &Loader::external_image);
161 add("image_data", &Loader::image_data);
162 add("raw_data", &Loader::raw_data);
163 add("storage", &Loader::storage);
164 add("storage", &Loader::storage_levels);
167 void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
170 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
173 obj.image(face, img);
176 void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
179 IO::Memory mem(data.data(), data.size());
182 obj.image(face, img);
185 void TextureCube::Loader::raw_data(TextureCubeFace face, const string &data)
187 obj.image(face, 0, data.data());
190 void TextureCube::Loader::storage(PixelFormat fmt, unsigned s)
195 void TextureCube::Loader::storage_levels(PixelFormat fmt, unsigned s, unsigned l)
197 obj.storage(fmt, s, l);
201 void operator>>(const LexicalConverter &conv, TextureCubeFace &face)
203 const string &str = conv.get();
204 if(str=="POSITIVE_X")
206 else if(str=="NEGATIVE_X")
208 else if(str=="POSITIVE_Y")
210 else if(str=="NEGATIVE_Y")
212 else if(str=="POSITIVE_Z")
214 else if(str=="NEGATIVE_Z")
217 throw lexical_error(format("conversion of '%s' to TextureCubeFace", str));