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 if(ARB_direct_state_access)
95 glTextureStorage2D(id, levels, storage_fmt, width, height);
97 glTexStorage2D(target, levels, storage_fmt, width, height);
99 allocated |= (1<<levels)-1;
105 void Texture2D::image(unsigned level, const void *data)
107 if(width==0 || height==0)
108 throw invalid_operation("Texture2D::image");
110 throw out_of_range("Texture2D::image");
112 if(ARB_texture_storage)
114 LinAl::Vector<unsigned, 2> size = get_level_size(level);
115 return sub_image(level, 0, 0, size.x, size.y, data);
118 glActiveTexture(GL_TEXTURE0);
119 glBindTexture(target, id);
123 if(auto_gen_mipmap && level==0)
126 allocated |= (1<<levels)-1;
129 glBindTexture(target, 0);
132 void Texture2D::image_(unsigned level, const void *data)
136 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
140 LinAl::Vector<unsigned, 2> size = get_level_size(level);
141 PixelComponents comp = get_components(storage_fmt);
142 GLenum type = get_gl_type(get_component_type(storage_fmt));
143 glTexImage2D(target, level, storage_fmt, size.x, size.y, 0, comp, type, data);
145 allocated |= 1<<level;
148 void Texture2D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
150 if(comp!=get_components(format) || type!=get_component_type(format))
151 throw incompatible_data("Texture2D::image");
155 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
157 if(width==0 || height==0)
158 throw invalid_operation("Texture2D::sub_image");
160 throw out_of_range("Texture2D::sub_image");
162 bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
165 glActiveTexture(GL_TEXTURE0);
166 glBindTexture(target, id);
171 PixelComponents comp = get_components(storage_fmt);
172 GLenum type = get_gl_type(get_component_type(storage_fmt));
173 if(ARB_direct_state_access)
174 glTextureSubImage2D(id, level, x, y, wd, ht, comp, type, data);
176 glTexSubImage2D(target, level, x, y, wd, ht, comp, type, data);
178 if(auto_gen_mipmap && level==0)
182 glBindTexture(target, 0);
185 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
187 if(comp!=get_components(format) || type!=get_component_type(format))
188 throw incompatible_data("Texture2D::sub_image");
189 sub_image(level, x, y, wd, ht, data);
192 void Texture2D::image(const Graphics::Image &img, unsigned lv)
194 image(img, lv, false);
197 void Texture2D::image(const Graphics::Image &img, unsigned lv, bool from_buffer)
199 unsigned w = img.get_width();
200 unsigned h = img.get_height();
201 PixelFormat fmt = pixelformat_from_image(img);
202 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, lv);
204 image(0, from_buffer ? 0 : img.get_pixels());
207 unsigned Texture2D::get_n_levels() const
210 for(unsigned s=max(width, height); s; s>>=1, ++n) ;
214 LinAl::Vector<unsigned, 2> Texture2D::get_level_size(unsigned level) const
216 unsigned w = width>>level;
217 unsigned h = height>>level;
224 return LinAl::Vector<unsigned, 2>(w, h);
227 Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *)
229 AsyncLoader *ldr = new AsyncLoader(*this, io);
233 UInt64 Texture2D::get_data_size() const
235 return id ? width*height*get_pixel_size(format) : 0;
238 void Texture2D::unload()
240 glDeleteTextures(1, &id);
246 Texture2D::Loader::Loader(Texture2D &t):
247 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
252 Texture2D::Loader::Loader(Texture2D &t, Collection &c):
253 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t, c)
258 void Texture2D::Loader::init()
260 add("raw_data", &Loader::raw_data);
261 add("storage", &Loader::storage);
262 add("storage", &Loader::storage_levels);
265 void Texture2D::Loader::raw_data(const string &data)
273 obj.image(0, data.data());
276 void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
278 obj.storage(fmt, w, h);
281 void Texture2D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned l)
283 obj.storage(fmt, w, h, l);
287 Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
291 img_loader(Graphics::ImageLoader::open_io(io)),
295 Texture2D::AsyncLoader::~AsyncLoader()
298 pixel_buffer.unmap();
302 bool Texture2D::AsyncLoader::needs_sync() const
307 bool Texture2D::AsyncLoader::process()
311 image.load_headers(*img_loader);
312 n_bytes = image.get_stride()*image.get_height();
316 pixel_buffer.storage(n_bytes);
317 mapped_address = reinterpret_cast<char *>(pixel_buffer.map());
320 image.load_into(*img_loader, mapped_address);
324 if(!pixel_buffer.unmap())
331 texture.generate_id();
332 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pixel_buffer.get_id());
333 texture.image(image, 0, true);
334 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);