1 #include <msp/gl/extensions/arb_direct_state_access.h>
2 #include <msp/gl/extensions/arb_texture_storage.h>
3 #include <msp/gl/extensions/arb_vertex_buffer_object.h>
4 #include <msp/graphics/imageloader.h>
14 class Texture2D::AsyncLoader: public Resource::AsyncLoader
21 Graphics::Image image;
22 Graphics::ImageLoader *img_loader;
27 AsyncLoader(Texture2D &, IO::Seekable &);
30 virtual bool needs_sync() const;
31 virtual bool process();
35 Texture2D::Texture2D(ResourceManager *m):
36 Texture(GL_TEXTURE_2D, m),
41 Texture2D::~Texture2D()
46 void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned lv)
50 if(fmt!=format || wd!=width || ht!=height || (lv && lv!=levels))
51 throw incompatible_data("Texture2D::storage");
55 throw invalid_argument("Texture2D::storage");
60 levels = get_n_levels();
62 levels = min(levels, lv);
64 GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
65 if(ARB_texture_storage)
67 if(ARB_direct_state_access)
68 glTextureStorage2D(id, levels, gl_fmt, width, height);
72 glTexStorage2D(target, levels, gl_fmt, width, height);
78 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
79 GLenum comp = get_gl_components(get_components(storage_fmt));
80 GLenum type = get_gl_type(get_component_type(storage_fmt));
81 for(unsigned i=0; i<levels; ++i)
83 LinAl::Vector<unsigned, 2> lv_size = get_level_size(i);
84 glTexImage2D(target, i, gl_fmt, lv_size.x, lv_size.y, 0, comp, type, 0);
91 void Texture2D::image(unsigned level, const void *data)
93 LinAl::Vector<unsigned, 2> size = get_level_size(level);
94 return sub_image(level, 0, 0, size.x, size.y, data);
97 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
99 if(width==0 || height==0)
100 throw invalid_operation("Texture2D::sub_image");
102 throw out_of_range("Texture2D::sub_image");
104 GLenum comp = get_gl_components(get_components(storage_fmt));
105 GLenum type = get_gl_type(get_component_type(storage_fmt));
106 if(ARB_direct_state_access)
107 glTextureSubImage2D(id, level, x, y, wd, ht, comp, type, data);
111 glTexSubImage2D(target, level, x, y, wd, ht, comp, type, data);
115 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const Buffer &buffer, unsigned offset)
117 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer.id);
118 sub_image(level, x, y, wd, ht, reinterpret_cast<void *>(offset));
119 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
122 void Texture2D::image(const Graphics::Image &img, unsigned lv)
124 storage(pixelformat_from_image(img, use_srgb_format), img.get_width(), img.get_height(), lv);
125 image(0, img.get_pixels());
128 unsigned Texture2D::get_n_levels() const
131 for(unsigned s=max(width, height); s; s>>=1, ++n) ;
135 LinAl::Vector<unsigned, 2> Texture2D::get_level_size(unsigned level) const
137 unsigned w = width>>level;
138 unsigned h = height>>level;
145 return LinAl::Vector<unsigned, 2>(w, h);
148 Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *)
150 AsyncLoader *ldr = new AsyncLoader(*this, io);
154 uint64_t Texture2D::get_data_size() const
156 return id ? width*height*get_pixel_size(format) : 0;
159 void Texture2D::unload()
161 glDeleteTextures(1, &id);
166 Texture2D::Loader::Loader(Texture2D &t):
167 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
172 Texture2D::Loader::Loader(Texture2D &t, Collection &c):
173 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t, c)
178 void Texture2D::Loader::init()
180 add("raw_data", &Loader::raw_data);
181 add("storage", &Loader::storage);
182 add("storage", &Loader::storage_levels);
185 void Texture2D::Loader::raw_data(const string &data)
193 obj.image(0, data.data());
196 void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
198 obj.storage(fmt, w, h);
201 void Texture2D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned l)
203 obj.storage(fmt, w, h, l);
207 Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
211 img_loader(Graphics::ImageLoader::open_io(io)),
215 Texture2D::AsyncLoader::~AsyncLoader()
218 pixel_buffer.unmap();
222 bool Texture2D::AsyncLoader::needs_sync() const
227 bool Texture2D::AsyncLoader::process()
231 image.load_headers(*img_loader);
232 n_bytes = image.get_stride()*image.get_height();
236 pixel_buffer.storage(n_bytes);
237 mapped_address = reinterpret_cast<char *>(pixel_buffer.map());
240 image.load_into(*img_loader, mapped_address);
244 if(!pixel_buffer.unmap())
251 texture.generate_id();
253 unsigned w = image.get_width();
254 unsigned h = image.get_height();
255 texture.storage(pixelformat_from_image(image, texture.use_srgb_format), w, h);
256 texture.sub_image(0, 0, 0, w, h, pixel_buffer, 0);
258 if(texture.auto_gen_mipmap)
259 texture.generate_mipmap();