2 #include <msp/core/raii.h>
3 #include <msp/gl/extensions/arb_direct_state_access.h>
4 #include <msp/gl/extensions/arb_texture_storage.h>
5 #include <msp/gl/extensions/ext_texture3d.h>
6 #include <msp/gl/extensions/ext_texture_array.h>
7 #include <msp/graphics/image.h>
16 Texture3D::Texture3D(GLenum t):
24 Texture3D::Texture3D():
25 Texture(GL_TEXTURE_3D),
31 static Require _req(EXT_texture3D);
34 void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
38 if(fmt!=format || wd!=width || ht!=height || dp!=depth || (lv && lv!=levels))
39 throw incompatible_data("Texture3D::storage");
42 if(wd==0 || ht==0 || dp==0)
43 throw invalid_argument("Texture3D::storage");
49 levels = get_n_levels();
51 levels = min(levels, lv);
54 void Texture3D::allocate(unsigned level)
56 if(width==0 || height==0 || depth==0)
57 throw invalid_operation("Texture3D::allocate");
59 throw invalid_argument("Texture3D::allocate");
61 bool direct = ARB_texture_storage && ARB_direct_state_access;
64 glActiveTexture(GL_TEXTURE0);
65 glBindTexture(target, id);
71 glBindTexture(target, 0);
74 void Texture3D::allocate_(unsigned level)
76 if(allocated&(1<<level))
79 if(ARB_texture_storage)
81 GLenum fmt = get_gl_pixelformat(storage_fmt);
82 if(ARB_direct_state_access)
83 glTextureStorage3D(id, levels, fmt, width, height, depth);
85 glTexStorage3D(target, levels, fmt, width, height, depth);
87 allocated |= (1<<levels)-1;
93 void Texture3D::image(unsigned level, const void *data)
95 if(width==0 || height==0 || depth==0)
96 throw invalid_operation("Texture3D::image");
98 throw out_of_range("Texture3D::image");
100 if(ARB_texture_storage)
102 LinAl::Vector<unsigned, 3> size = get_level_size(level);
103 return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
106 glActiveTexture(GL_TEXTURE0);
107 glBindTexture(target, id);
111 if(auto_gen_mipmap && level==0)
114 allocated |= (1<<levels)-1;
117 glBindTexture(target, 0);
120 void Texture3D::image_(unsigned level, const void *data)
124 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
128 LinAl::Vector<unsigned, 3> size = get_level_size(level);
129 GLenum fmt = get_gl_pixelformat(storage_fmt);
130 GLenum comp = get_gl_components(get_components(storage_fmt));
131 GLenum type = get_gl_type(get_component_type(storage_fmt));
132 glTexImage3D(target, level, fmt, size.x, size.y, size.z, 0, comp, type, data);
134 allocated |= 1<<level;
137 void Texture3D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
139 if(comp!=get_components(format) || type!=get_component_type(format))
140 throw incompatible_data("Texture3D::image");
144 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
146 if(width==0 || height==0 || depth==0)
147 throw invalid_operation("Texture3D::sub_image");
149 throw out_of_range("Texture3D::sub_image");
151 bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
154 glActiveTexture(GL_TEXTURE0);
155 glBindTexture(target, id);
160 GLenum comp = get_gl_components(get_components(storage_fmt));
161 GLenum type = get_gl_type(get_component_type(storage_fmt));
162 if(ARB_direct_state_access)
163 glTextureSubImage3D(id, level, x, y, z, wd, ht, dp, comp, type, data);
165 glTexSubImage3D(target, level, x, y, z, wd, ht, dp, comp, type, data);
167 if(auto_gen_mipmap && level==0)
171 glBindTexture(target, 0);
174 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, PixelComponents comp, DataType type, const void *data)
176 if(comp!=get_components(format) || type!=get_component_type(format))
177 throw incompatible_data("Texture3D::sub_image");
178 sub_image(level, x, y, z, wd, ht, dp, data);
181 void Texture3D::image(const Graphics::Image &img, unsigned lv)
183 unsigned w = img.get_width();
184 unsigned h = img.get_height();
187 throw incompatible_data("Texture3D::load_image");
191 PixelFormat fmt = pixelformat_from_image(img);
192 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, d, lv);
194 image(0, img.get_pixels());
197 unsigned Texture3D::get_n_levels() const
199 unsigned s = max(width, height);
200 if(target!=GL_TEXTURE_2D_ARRAY)
203 for(; s; s>>=1, ++n) ;
207 LinAl::Vector<unsigned, 3> Texture3D::get_level_size(unsigned level) const
209 unsigned w = width>>level;
210 unsigned h = height>>level;
212 if(target!=GL_TEXTURE_2D_ARRAY)
222 return LinAl::Vector<unsigned, 3>(w, h, d);
225 UInt64 Texture3D::get_data_size() const
227 return id ? width*height*depth*get_pixel_size(storage_fmt) : 0;
231 Texture3D::Loader::Loader(Texture3D &t):
232 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t)
237 Texture3D::Loader::Loader(Texture3D &t, Collection &c):
238 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t, c)
243 void Texture3D::Loader::init()
245 add("raw_data", &Loader::raw_data);
246 add("storage", &Loader::storage);
247 add("storage", &Loader::storage_levels);
250 void Texture3D::Loader::raw_data(const string &data)
252 obj.image(0, data.data());
255 void Texture3D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned d)
257 obj.storage(fmt, w, h, d);
260 void Texture3D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned d, unsigned l)
262 obj.storage(fmt, w, h, d, l);