1 #include <msp/datafile/collection.h>
2 #include <msp/gl/extensions/arb_seamless_cube_map.h>
3 #include <msp/gl/extensions/arb_texture_cube_map.h>
4 #include <msp/gl/extensions/arb_texture_storage.h>
5 #include <msp/io/memory.h>
6 #include <msp/strings/format.h>
9 #include "pixelstore.h"
10 #include "texturecube.h"
17 TextureCubeFace TextureCube::face_order[6] =
27 Vector3 TextureCube::directions[6] =
37 unsigned TextureCube::orientations[12] =
47 TextureCube::TextureCube():
48 Texture(GL_TEXTURE_CUBE_MAP),
52 static Require _req(ARB_texture_cube_map);
53 if(ARB_seamless_cube_map)
54 glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
57 void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
61 if(fmt!=format || sz!=size || (lv && lv!=levels))
62 throw incompatible_data("TextureCube::storage");
66 throw invalid_argument("TextureCube::storage");
70 levels = get_n_levels();
72 levels = min(levels, lv);
75 void TextureCube::allocate(unsigned level)
78 throw invalid_operation("TextureCube::allocate");
80 throw invalid_argument("TextureCube::allocate");
81 if(allocated&(64<<level))
84 if(ARB_texture_storage)
86 BindRestore _bind(this);
87 glTexStorage2D(target, levels, storage_fmt, size, size);
89 allocated |= (64<<levels)-1;
93 for(unsigned i=0; i<6; ++i)
94 image(enumerate_faces(i), level, 0);
98 void TextureCube::image(TextureCubeFace face, unsigned level, const void *data)
101 throw invalid_operation("TextureCube::image");
103 unsigned s = get_level_size(level);
105 throw out_of_range("TextureCube::image");
107 if(ARB_texture_storage)
108 return sub_image(face, level, 0, 0, s, s, data);
110 BindRestore _bind(this);
114 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
118 PixelComponents comp = get_components(storage_fmt);
119 GLenum type = get_gl_type(get_component_type(storage_fmt));
120 glTexImage2D(face, level, storage_fmt, s, s, 0, comp, type, data);
124 allocated |= 1<<get_face_index(face);
125 if((allocated&63)==63)
131 allocated |= (64<<levels)-1;
135 else if(!(allocated&(64<<level)))
137 for(unsigned i=0; i<6; ++i)
138 if(enumerate_faces(i)!=face)
139 glTexImage2D(enumerate_faces(i), level, storage_fmt, s, s, 0, comp, type, 0);
141 allocated |= 64<<level;
145 void TextureCube::image(TextureCubeFace face, unsigned level, PixelComponents comp, DataType type, const void *data)
147 if(comp!=get_components(format) || type!=get_component_type(format))
148 throw incompatible_data("TextureCube::image");
149 image(face, level, data);
152 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
155 throw invalid_operation("TextureCube::sub_image");
157 BindRestore _bind(this);
160 PixelComponents comp = get_components(storage_fmt);
161 GLenum type = get_gl_type(get_component_type(storage_fmt));
162 glTexSubImage2D(face, level, x, y, wd, ht, comp, type, data);
164 if(auto_gen_mipmap && level==0)
168 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
170 if(comp!=get_components(format) || type!=get_component_type(format))
171 throw incompatible_data("TextureCube::subimage");
172 sub_image(face, level, x, y, wd, ht, data);
175 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img)
177 unsigned w = img.get_width();
178 unsigned h = img.get_height();
180 throw incompatible_data("TextureCube::image");
182 PixelFormat fmt = pixelformat_from_image(img);
183 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w);
185 PixelStore pstore = PixelStore::from_image(img);
186 BindRestore _bind_ps(pstore);
188 image(face, 0, img.get_pixels());
191 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool)
196 void TextureCube::image(const Graphics::Image &img, unsigned lv)
198 unsigned w = img.get_width();
199 unsigned h = img.get_height();
202 throw incompatible_data("TextureCube::image");
205 PixelFormat fmt = pixelformat_from_image(img);
207 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
208 else if(w!=size || h!=size)
209 throw incompatible_data("TextureCube::image");
211 PixelStore pstore = PixelStore::from_image(img);
212 BindRestore _bind_ps(pstore);
214 const char *pixels = reinterpret_cast<const char *>(img.get_pixels());
215 unsigned face_size = img.get_stride()*size;
216 for(unsigned i=0; i<6; ++i)
217 image(enumerate_faces(i), 0, pixels+i*face_size);
220 unsigned TextureCube::get_n_levels() const
223 for(unsigned s=size; s; s>>=1, ++n) ;
227 unsigned TextureCube::get_level_size(unsigned level) const
232 TextureCubeFace TextureCube::enumerate_faces(unsigned i)
235 throw out_of_range("TextureCube::enumerate_faces");
236 return face_order[i];
239 unsigned TextureCube::get_face_index(TextureCubeFace face)
243 case POSITIVE_X: return 0;
244 case NEGATIVE_X: return 1;
245 case POSITIVE_Y: return 2;
246 case NEGATIVE_Y: return 3;
247 case POSITIVE_Z: return 4;
248 case NEGATIVE_Z: return 5;
249 default: throw invalid_argument("TextureCube::get_face_index");
253 const Vector3 &TextureCube::get_face_direction(TextureCubeFace face)
255 return directions[get_face_index(face)];
258 const Vector3 &TextureCube::get_s_direction(TextureCubeFace face)
260 return directions[orientations[get_face_index(face)*2]];
263 const Vector3 &TextureCube::get_t_direction(TextureCubeFace face)
265 return directions[orientations[get_face_index(face)*2+1]];
268 Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsigned v)
270 float s = (u+0.5f)*2.0f/size-1.0f;
271 float t = (v+0.5f)*2.0f/size-1.0f;
272 const Vector3 &fv = get_face_direction(face);
273 const Vector3 &sv = get_s_direction(face);
274 const Vector3 &tv = get_t_direction(face);
278 UInt64 TextureCube::get_data_size() const
280 return id ? size*size*6*get_pixel_size(storage_fmt) : 0;
284 TextureCube::Loader::Loader(TextureCube &t):
285 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t)
290 TextureCube::Loader::Loader(TextureCube &t, Collection &c):
291 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t, c)
296 void TextureCube::Loader::init()
298 add("external_image", &Loader::external_image);
299 add("image_data", &Loader::image_data);
300 add("raw_data", &Loader::raw_data);
301 add("storage", &Loader::storage);
302 add("storage", &Loader::storage_levels);
305 void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
308 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
311 obj.image(face, img);
314 void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
317 IO::Memory mem(data.data(), data.size());
320 obj.image(face, img);
323 void TextureCube::Loader::raw_data(TextureCubeFace face, const string &data)
325 obj.image(face, 0, data.data());
328 void TextureCube::Loader::storage(PixelFormat fmt, unsigned s)
333 void TextureCube::Loader::storage_levels(PixelFormat fmt, unsigned s, unsigned l)
335 obj.storage(fmt, s, l);
339 void operator>>(const LexicalConverter &conv, TextureCubeFace &face)
341 const string &str = conv.get();
342 if(str=="POSITIVE_X")
344 else if(str=="NEGATIVE_X")
346 else if(str=="POSITIVE_Y")
348 else if(str=="NEGATIVE_Y")
350 else if(str=="POSITIVE_Z")
352 else if(str=="NEGATIVE_Z")
355 throw lexical_error(format("conversion of '%s' to TextureCubeFace", str));