1 #include <msp/core/raii.h>
2 #include <msp/gl/extensions/arb_direct_state_access.h>
3 #include <msp/gl/extensions/arb_texture_storage.h>
4 #include <msp/graphics/imageloader.h>
15 class Texture2D::AsyncLoader: public Resource::AsyncLoader
22 Graphics::Image image;
23 Graphics::ImageLoader *img_loader;
28 AsyncLoader(Texture2D &, IO::Seekable &);
31 virtual bool needs_sync() const;
32 virtual bool process();
36 Texture2D::Texture2D(ResourceManager *m):
37 Texture(GL_TEXTURE_2D, m),
43 Texture2D::~Texture2D()
48 void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned lv)
52 if(fmt!=format || wd!=width || ht!=height || (lv && lv!=levels))
53 throw incompatible_data("Texture2D::storage");
57 throw invalid_argument("Texture2D::storage");
62 levels = get_n_levels();
64 levels = min(levels, lv);
67 void Texture2D::allocate(unsigned level)
69 if(width==0 || height==0)
70 throw invalid_operation("Texture2D::allocate");
72 throw invalid_argument("Texture2D::allocate");
74 bool direct = ARB_texture_storage && ARB_direct_state_access;
77 glActiveTexture(GL_TEXTURE0);
78 glBindTexture(target, id);
84 glBindTexture(target, 0);
87 void Texture2D::allocate_(unsigned level)
89 if(allocated&(1<<level))
92 if(ARB_texture_storage)
94 GLenum fmt = get_gl_pixelformat(storage_fmt);
95 if(ARB_direct_state_access)
96 glTextureStorage2D(id, levels, fmt, width, height);
98 glTexStorage2D(target, levels, fmt, width, height);
100 allocated |= (1<<levels)-1;
106 void Texture2D::image(unsigned level, const void *data)
108 if(width==0 || height==0)
109 throw invalid_operation("Texture2D::image");
111 throw out_of_range("Texture2D::image");
113 if(ARB_texture_storage)
115 LinAl::Vector<unsigned, 2> size = get_level_size(level);
116 return sub_image(level, 0, 0, size.x, size.y, data);
119 glActiveTexture(GL_TEXTURE0);
120 glBindTexture(target, id);
124 if(auto_gen_mipmap && level==0)
127 allocated |= (1<<levels)-1;
130 glBindTexture(target, 0);
133 void Texture2D::image_(unsigned level, const void *data)
137 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
141 LinAl::Vector<unsigned, 2> size = get_level_size(level);
142 GLenum fmt = get_gl_pixelformat(storage_fmt);
143 GLenum comp = get_gl_components(get_components(storage_fmt));
144 GLenum type = get_gl_type(get_component_type(storage_fmt));
145 glTexImage2D(target, level, fmt, size.x, size.y, 0, comp, type, data);
147 allocated |= 1<<level;
150 void Texture2D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
152 if(comp!=get_components(format) || type!=get_component_type(format))
153 throw incompatible_data("Texture2D::image");
157 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
159 if(width==0 || height==0)
160 throw invalid_operation("Texture2D::sub_image");
162 throw out_of_range("Texture2D::sub_image");
164 bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
167 glActiveTexture(GL_TEXTURE0);
168 glBindTexture(target, id);
173 GLenum comp = get_gl_components(get_components(storage_fmt));
174 GLenum type = get_gl_type(get_component_type(storage_fmt));
175 if(ARB_direct_state_access)
176 glTextureSubImage2D(id, level, x, y, wd, ht, comp, type, data);
178 glTexSubImage2D(target, level, x, y, wd, ht, comp, type, data);
180 if(auto_gen_mipmap && level==0)
184 glBindTexture(target, 0);
187 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
189 if(comp!=get_components(format) || type!=get_component_type(format))
190 throw incompatible_data("Texture2D::sub_image");
191 sub_image(level, x, y, wd, ht, data);
194 void Texture2D::image(const Graphics::Image &img, unsigned lv)
196 image(img, lv, false);
199 void Texture2D::image(const Graphics::Image &img, unsigned lv, bool from_buffer)
201 unsigned w = img.get_width();
202 unsigned h = img.get_height();
203 PixelFormat fmt = pixelformat_from_image(img);
204 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, lv);
206 image(0, from_buffer ? 0 : img.get_pixels());
209 unsigned Texture2D::get_n_levels() const
212 for(unsigned s=max(width, height); s; s>>=1, ++n) ;
216 LinAl::Vector<unsigned, 2> Texture2D::get_level_size(unsigned level) const
218 unsigned w = width>>level;
219 unsigned h = height>>level;
226 return LinAl::Vector<unsigned, 2>(w, h);
229 Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *)
231 AsyncLoader *ldr = new AsyncLoader(*this, io);
235 UInt64 Texture2D::get_data_size() const
237 return id ? width*height*get_pixel_size(format) : 0;
240 void Texture2D::unload()
242 glDeleteTextures(1, &id);
248 Texture2D::Loader::Loader(Texture2D &t):
249 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
254 Texture2D::Loader::Loader(Texture2D &t, Collection &c):
255 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t, c)
260 void Texture2D::Loader::init()
262 add("raw_data", &Loader::raw_data);
263 add("storage", &Loader::storage);
264 add("storage", &Loader::storage_levels);
267 void Texture2D::Loader::raw_data(const string &data)
275 obj.image(0, data.data());
278 void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
280 obj.storage(fmt, w, h);
283 void Texture2D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned l)
285 obj.storage(fmt, w, h, l);
289 Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
293 img_loader(Graphics::ImageLoader::open_io(io)),
297 Texture2D::AsyncLoader::~AsyncLoader()
300 pixel_buffer.unmap();
304 bool Texture2D::AsyncLoader::needs_sync() const
309 bool Texture2D::AsyncLoader::process()
313 image.load_headers(*img_loader);
314 n_bytes = image.get_stride()*image.get_height();
318 pixel_buffer.storage(n_bytes);
319 mapped_address = reinterpret_cast<char *>(pixel_buffer.map());
322 image.load_into(*img_loader, mapped_address);
326 if(!pixel_buffer.unmap())
333 texture.generate_id();
334 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pixel_buffer.get_id());
335 texture.image(image, 0, true);
336 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);