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>
7 #include "pixelstore.h"
16 class Texture2D::AsyncLoader: public Resource::AsyncLoader
24 Graphics::Image image;
29 AsyncLoader(Texture2D &, IO::Seekable &);
31 void set_srgb_conversion(bool);
32 virtual bool needs_sync() const;
33 virtual bool process();
37 Texture2D::Texture2D(ResourceManager *m):
38 Texture(GL_TEXTURE_2D, m),
45 Texture2D::~Texture2D()
50 void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht)
53 throw invalid_operation("Texture2D::storage");
55 throw invalid_argument("Texture2D::storage");
57 if(MSP_sized_internal_formats)
58 fmt = get_sized_pixelformat(fmt);
59 require_pixelformat(fmt);
66 void Texture2D::allocate(unsigned level)
68 if(allocated&(1<<level))
71 if(ARB_texture_storage)
73 unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
74 if(ARB_direct_state_access)
75 glTextureStorage2D(id, n_levels, ifmt, width, height);
78 BindRestore _bind(this);
79 glTexStorage2D(target, n_levels, ifmt, width, height);
81 allocated |= (1<<n_levels)-1;
85 PixelFormat base_fmt = get_base_pixelformat(ifmt);
86 image(level, base_fmt, get_alloc_type(base_fmt), 0);
90 void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
92 if(width==0 || height==0)
93 throw invalid_operation("Texture2D::image");
97 get_level_size(level, w, h);
99 if(ARB_texture_storage)
100 return sub_image(level, 0, 0, w, h, fmt, type, data);
102 BindRestore _bind(this);
103 glTexImage2D(target, level, ifmt, w, h, 0, fmt, type, data);
105 allocated |= 1<<level;
106 if(gen_mipmap && level==0)
108 auto_generate_mipmap();
109 allocated |= (1<<get_n_levels())-1;
113 void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data)
115 if(width==0 || height==0)
116 throw invalid_operation("Texture2D::sub_image");
118 Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
121 if(ARB_direct_state_access)
122 glTextureSubImage2D(id, level, x, y, wd, ht, fmt, type, data);
124 glTexSubImage2D(target, level, x, y, wd, ht, fmt, type, data);
126 if(gen_mipmap && level==0)
127 auto_generate_mipmap();
130 void Texture2D::image(const Graphics::Image &img, bool srgb)
132 image(img, srgb, false);
135 void Texture2D::image(const Graphics::Image &img, bool srgb, bool from_buffer)
137 unsigned w = img.get_width();
138 unsigned h = img.get_height();
139 PixelFormat fmt = pixelformat_from_graphics(img.get_format());
141 storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h);
142 else if(w!=width || h!=height)
143 throw incompatible_data("Texture2D::image");
145 PixelStore pstore = PixelStore::from_image(img);
146 BindRestore _bind_ps(pstore);
148 image(0, fmt, UNSIGNED_BYTE, from_buffer ? 0 : img.get_data());
151 unsigned Texture2D::get_n_levels() const
154 for(unsigned s=max(width, height); s; s>>=1, ++n) ;
158 void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h) const
169 Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *res)
171 AsyncLoader *ldr = new AsyncLoader(*this, io);
173 ldr->set_srgb_conversion(res->get_srgb_conversion());
177 UInt64 Texture2D::get_data_size() const
179 return id ? width*height*get_component_count(ifmt) : 0;
182 void Texture2D::unload()
184 glDeleteTextures(1, &id);
186 // TODO check which params actually need refreshing
191 Texture2D::Loader::Loader(Texture2D &t):
192 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
197 Texture2D::Loader::Loader(Texture2D &t, Collection &c):
198 DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t, c)
203 void Texture2D::Loader::init()
205 add("raw_data", &Loader::raw_data);
206 add("storage", &Loader::storage);
209 void Texture2D::Loader::raw_data(const string &data)
211 obj.image(0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
214 void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
217 fmt = get_srgb_pixelformat(fmt);
218 obj.storage(fmt, w, h);
222 Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
225 srgb_conversion(false),
226 pixel_buffer(PIXEL_UNPACK_BUFFER),
231 void Texture2D::AsyncLoader::set_srgb_conversion(bool c)
236 bool Texture2D::AsyncLoader::needs_sync() const
241 bool Texture2D::AsyncLoader::process()
245 /* TODO Enhance the ImageLoader system so that the image can be loaded
246 directly to the buffer */
248 n_bytes = image.get_stride()*image.get_height();
252 pixel_buffer.data(n_bytes, 0);
253 mapped_address = reinterpret_cast<char *>(pixel_buffer.map(WRITE_ONLY));
257 const char *data = reinterpret_cast<const char *>(image.get_data());
258 copy(data, data+n_bytes, mapped_address);
262 Bind _bind_buf(pixel_buffer, PIXEL_UNPACK_BUFFER);
263 if(!pixel_buffer.unmap())
270 glGenTextures(1, &texture.id);
271 texture.image(image, srgb_conversion, true);