1 #include <msp/datafile/collection.h>
2 #include <msp/gl/extensions/arb_direct_state_access.h>
3 #include <msp/gl/extensions/arb_seamless_cube_map.h>
4 #include <msp/gl/extensions/arb_texture_cube_map.h>
5 #include <msp/gl/extensions/arb_texture_storage.h>
6 #include <msp/io/memory.h>
7 #include <msp/strings/format.h>
9 #include "texturecube.h"
16 TextureCubeFace TextureCube::face_order[6] =
26 Vector3 TextureCube::directions[6] =
36 unsigned TextureCube::orientations[12] =
46 TextureCube::TextureCube():
47 Texture(GL_TEXTURE_CUBE_MAP),
51 static Require _req(ARB_texture_cube_map);
52 if(ARB_seamless_cube_map)
53 glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
56 void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
60 if(fmt!=format || sz!=size || (lv && lv!=levels))
61 throw incompatible_data("TextureCube::storage");
65 throw invalid_argument("TextureCube::storage");
69 levels = get_n_levels();
71 levels = min(levels, lv);
74 void TextureCube::allocate(unsigned level)
77 throw invalid_operation("TextureCube::allocate");
79 throw invalid_argument("TextureCube::allocate");
80 if(allocated&(64<<level))
83 if(ARB_texture_storage)
85 GLenum fmt = get_gl_pixelformat(storage_fmt);
86 if(ARB_direct_state_access)
87 glTextureStorage2D(id, levels, fmt, size, size);
91 glTexStorage2D(target, levels, fmt, size, size);
94 allocated |= (64<<levels)-1;
98 for(unsigned i=0; i<6; ++i)
99 image(enumerate_faces(i), level, 0);
103 void TextureCube::image(TextureCubeFace face, unsigned level, const void *data)
106 throw invalid_operation("TextureCube::image");
108 throw out_of_range("TextureCube::image");
110 unsigned lsz = get_level_size(level);
112 if(ARB_texture_storage)
113 return sub_image(face, level, 0, 0, lsz, lsz, data);
117 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
121 GLenum fmt = get_gl_pixelformat(storage_fmt);
122 GLenum comp = get_gl_components(get_components(storage_fmt));
123 GLenum type = get_gl_type(get_component_type(storage_fmt));
124 glTexImage2D(face, level, fmt, lsz, lsz, 0, comp, type, data);
128 allocated |= 1<<get_face_index(face);
129 if((allocated&63)==63)
132 if(auto_gen_mipmap && level==0 && (allocated&63)==63)
135 allocated |= (64<<levels)-1;
139 else if(!(allocated&(64<<level)))
141 for(unsigned i=0; i<6; ++i)
142 if(enumerate_faces(i)!=face)
143 glTexImage2D(enumerate_faces(i), level, fmt, lsz, lsz, 0, comp, type, 0);
145 allocated |= 64<<level;
149 void TextureCube::image(TextureCubeFace face, unsigned level, PixelComponents comp, DataType type, const void *data)
151 if(comp!=get_components(format) || type!=get_component_type(format))
152 throw incompatible_data("TextureCube::image");
153 image(face, level, data);
156 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
159 throw invalid_operation("TextureCube::sub_image");
161 throw out_of_range("TextureCube::sub_image");
165 GLenum comp = get_gl_components(get_components(storage_fmt));
166 GLenum type = get_gl_type(get_component_type(storage_fmt));
167 if(ARB_direct_state_access)
168 glTextureSubImage3D(id, level, x, y, get_face_index(face), wd, ht, 1, comp, type, data);
172 glTexSubImage2D(face, level, x, y, wd, ht, comp, type, data);
175 if(auto_gen_mipmap && level==0)
179 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
181 if(comp!=get_components(format) || type!=get_component_type(format))
182 throw incompatible_data("TextureCube::subimage");
183 sub_image(face, level, x, y, wd, ht, data);
186 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img)
188 unsigned w = img.get_width();
189 unsigned h = img.get_height();
191 throw incompatible_data("TextureCube::image");
193 PixelFormat fmt = pixelformat_from_image(img);
194 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w);
196 image(face, 0, img.get_pixels());
199 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool)
204 void TextureCube::image(const Graphics::Image &img, unsigned lv)
206 unsigned w = img.get_width();
207 unsigned h = img.get_height();
210 throw incompatible_data("TextureCube::image");
213 PixelFormat fmt = pixelformat_from_image(img);
215 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
216 else if(w!=size || h!=size)
217 throw incompatible_data("TextureCube::image");
219 const char *pixels = reinterpret_cast<const char *>(img.get_pixels());
220 unsigned face_size = img.get_stride()*size;
221 for(unsigned i=0; i<6; ++i)
222 image(enumerate_faces(i), 0, pixels+i*face_size);
225 unsigned TextureCube::get_n_levels() const
228 for(unsigned s=size; s; s>>=1, ++n) ;
232 unsigned TextureCube::get_level_size(unsigned level) const
237 TextureCubeFace TextureCube::enumerate_faces(unsigned i)
240 throw out_of_range("TextureCube::enumerate_faces");
241 return face_order[i];
244 unsigned TextureCube::get_face_index(TextureCubeFace face)
248 case POSITIVE_X: return 0;
249 case NEGATIVE_X: return 1;
250 case POSITIVE_Y: return 2;
251 case NEGATIVE_Y: return 3;
252 case POSITIVE_Z: return 4;
253 case NEGATIVE_Z: return 5;
254 default: throw invalid_argument("TextureCube::get_face_index");
258 const Vector3 &TextureCube::get_face_direction(TextureCubeFace face)
260 return directions[get_face_index(face)];
263 const Vector3 &TextureCube::get_s_direction(TextureCubeFace face)
265 return directions[orientations[get_face_index(face)*2]];
268 const Vector3 &TextureCube::get_t_direction(TextureCubeFace face)
270 return directions[orientations[get_face_index(face)*2+1]];
273 Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsigned v)
275 float s = (u+0.5f)*2.0f/size-1.0f;
276 float t = (v+0.5f)*2.0f/size-1.0f;
277 const Vector3 &fv = get_face_direction(face);
278 const Vector3 &sv = get_s_direction(face);
279 const Vector3 &tv = get_t_direction(face);
283 UInt64 TextureCube::get_data_size() const
285 return id ? size*size*6*get_pixel_size(storage_fmt) : 0;
289 TextureCube::Loader::Loader(TextureCube &t):
290 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t)
295 TextureCube::Loader::Loader(TextureCube &t, Collection &c):
296 DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t, c)
301 void TextureCube::Loader::init()
303 add("external_image", &Loader::external_image);
304 add("image_data", &Loader::image_data);
305 add("raw_data", &Loader::raw_data);
306 add("storage", &Loader::storage);
307 add("storage", &Loader::storage_levels);
310 void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
313 RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
316 obj.image(face, img);
319 void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
322 IO::Memory mem(data.data(), data.size());
325 obj.image(face, img);
328 void TextureCube::Loader::raw_data(TextureCubeFace face, const string &data)
330 obj.image(face, 0, data.data());
333 void TextureCube::Loader::storage(PixelFormat fmt, unsigned s)
338 void TextureCube::Loader::storage_levels(PixelFormat fmt, unsigned s, unsigned l)
340 obj.storage(fmt, s, l);
344 void operator>>(const LexicalConverter &conv, TextureCubeFace &face)
346 const string &str = conv.get();
347 if(str=="POSITIVE_X")
349 else if(str=="NEGATIVE_X")
351 else if(str=="POSITIVE_Y")
353 else if(str=="NEGATIVE_Y")
355 else if(str=="POSITIVE_Z")
357 else if(str=="NEGATIVE_Z")
360 throw lexical_error(format("conversion of '%s' to TextureCubeFace", str));