2 #include <msp/gl/extensions/arb_direct_state_access.h>
3 #include <msp/gl/extensions/arb_texture_storage.h>
4 #include <msp/gl/extensions/ext_texture3d.h>
5 #include <msp/gl/extensions/ext_texture_array.h>
6 #include <msp/graphics/image.h>
15 Texture3D::Texture3D(GLenum t):
23 Texture3D::Texture3D():
24 Texture(GL_TEXTURE_3D),
30 static Require _req(EXT_texture3D);
33 void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
37 if(fmt!=format || wd!=width || ht!=height || dp!=depth || (lv && lv!=levels))
38 throw incompatible_data("Texture3D::storage");
41 if(wd==0 || ht==0 || dp==0)
42 throw invalid_argument("Texture3D::storage");
48 levels = get_n_levels();
50 levels = min(levels, lv);
53 void Texture3D::allocate(unsigned level)
55 if(width==0 || height==0 || depth==0)
56 throw invalid_operation("Texture3D::allocate");
58 throw invalid_argument("Texture3D::allocate");
59 if(allocated&(1<<level))
62 if(ARB_texture_storage)
64 GLenum fmt = get_gl_pixelformat(storage_fmt);
65 if(ARB_direct_state_access)
66 glTextureStorage3D(id, levels, fmt, width, height, depth);
70 glTexStorage3D(target, levels, fmt, width, height, depth);
73 allocated |= (1<<levels)-1;
79 void Texture3D::image(unsigned level, const void *data)
81 if(width==0 || height==0 || depth==0)
82 throw invalid_operation("Texture3D::image");
84 throw out_of_range("Texture3D::image");
86 LinAl::Vector<unsigned, 3> size = get_level_size(level);
88 if(ARB_texture_storage)
89 return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
95 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
99 GLenum fmt = get_gl_pixelformat(storage_fmt);
100 GLenum comp = get_gl_components(get_components(storage_fmt));
101 GLenum type = get_gl_type(get_component_type(storage_fmt));
102 glTexImage3D(target, level, fmt, size.x, size.y, size.z, 0, comp, type, data);
104 allocated |= 1<<level;
107 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
109 if(width==0 || height==0 || depth==0)
110 throw invalid_operation("Texture3D::sub_image");
112 throw out_of_range("Texture3D::sub_image");
116 GLenum comp = get_gl_components(get_components(storage_fmt));
117 GLenum type = get_gl_type(get_component_type(storage_fmt));
118 if(ARB_direct_state_access)
119 glTextureSubImage3D(id, level, x, y, z, wd, ht, dp, comp, type, data);
123 glTexSubImage3D(target, level, x, y, z, wd, ht, dp, comp, type, data);
127 void Texture3D::image(const Graphics::Image &img, unsigned lv)
129 unsigned w = img.get_width();
130 unsigned h = img.get_height();
133 throw incompatible_data("Texture3D::load_image");
137 PixelFormat fmt = pixelformat_from_image(img);
138 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, d, lv);
140 image(0, img.get_pixels());
143 unsigned Texture3D::get_n_levels() const
145 unsigned s = max(width, height);
146 if(target!=GL_TEXTURE_2D_ARRAY)
149 for(; s; s>>=1, ++n) ;
153 LinAl::Vector<unsigned, 3> Texture3D::get_level_size(unsigned level) const
155 unsigned w = width>>level;
156 unsigned h = height>>level;
158 if(target!=GL_TEXTURE_2D_ARRAY)
168 return LinAl::Vector<unsigned, 3>(w, h, d);
171 uint64_t Texture3D::get_data_size() const
173 return id ? width*height*depth*get_pixel_size(storage_fmt) : 0;
177 Texture3D::Loader::Loader(Texture3D &t):
178 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t)
183 Texture3D::Loader::Loader(Texture3D &t, Collection &c):
184 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t, c)
189 void Texture3D::Loader::init()
191 add("raw_data", &Loader::raw_data);
192 add("storage", &Loader::storage);
193 add("storage", &Loader::storage_levels);
196 void Texture3D::Loader::raw_data(const string &data)
198 obj.image(0, data.data());
201 void Texture3D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned d)
203 obj.storage(fmt, w, h, d);
206 void Texture3D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned d, unsigned l)
208 obj.storage(fmt, w, h, d, l);