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>
10 #include "texture3d.h"
17 Texture3D::Texture3D(GLenum t):
25 Texture3D::Texture3D():
26 Texture(GL_TEXTURE_3D),
32 static Require _req(EXT_texture3D);
35 void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
39 if(fmt!=format || wd!=width || ht!=height || dp!=depth || (lv && lv!=levels))
40 throw incompatible_data("Texture3D::storage");
43 if(wd==0 || ht==0 || dp==0)
44 throw invalid_argument("Texture3D::storage");
50 levels = get_n_levels();
52 levels = min(levels, lv);
55 void Texture3D::allocate(unsigned level)
57 if(width==0 || height==0 || depth==0)
58 throw invalid_operation("Texture3D::allocate");
60 throw invalid_argument("Texture3D::allocate");
61 if(allocated&(1<<level))
64 bool direct = ARB_texture_storage && ARB_direct_state_access;
67 glActiveTexture(GL_TEXTURE0);
68 glBindTexture(target, id);
74 glBindTexture(target, 0);
77 void Texture3D::allocate_(unsigned level)
79 if(ARB_texture_storage)
81 if(ARB_direct_state_access)
82 glTextureStorage3D(id, levels, storage_fmt, width, height, depth);
84 glTexStorage3D(target, levels, storage_fmt, width, height, depth);
86 allocated |= (1<<levels)-1;
92 void Texture3D::image(unsigned level, const void *data)
94 if(width==0 || height==0 || depth==0)
95 throw invalid_operation("Texture3D::image");
97 throw out_of_range("Texture3D::image");
99 if(ARB_texture_storage)
101 LinAl::Vector<unsigned, 3> size = get_level_size(level);
102 return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
105 glActiveTexture(GL_TEXTURE0);
106 glBindTexture(target, id);
110 if(auto_gen_mipmap && level==0)
113 allocated |= (1<<levels)-1;
116 glBindTexture(target, 0);
119 void Texture3D::image_(unsigned level, const void *data)
123 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
127 LinAl::Vector<unsigned, 3> size = get_level_size(level);
128 PixelComponents comp = get_components(storage_fmt);
129 GLenum type = get_gl_type(get_component_type(storage_fmt));
130 glTexImage3D(target, level, storage_fmt, size.x, size.y, size.z, 0, comp, type, data);
132 allocated |= 1<<level;
135 void Texture3D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
137 if(comp!=get_components(format) || type!=get_component_type(format))
138 throw incompatible_data("Texture3D::image");
142 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
144 if(width==0 || height==0 || depth==0)
145 throw invalid_operation("Texture3D::sub_image");
147 throw out_of_range("Texture3D::sub_image");
149 bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
152 glActiveTexture(GL_TEXTURE0);
153 glBindTexture(target, id);
158 PixelComponents comp = get_components(storage_fmt);
159 GLenum type = get_gl_type(get_component_type(storage_fmt));
160 if(ARB_direct_state_access)
161 glTextureSubImage3D(id, level, x, y, z, wd, ht, dp, comp, type, data);
163 glTexSubImage3D(target, level, x, y, z, wd, ht, dp, comp, type, data);
165 if(auto_gen_mipmap && level==0)
169 glBindTexture(target, 0);
172 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)
174 if(comp!=get_components(format) || type!=get_component_type(format))
175 throw incompatible_data("Texture3D::sub_image");
176 sub_image(level, x, y, z, wd, ht, dp, data);
179 void Texture3D::image(const Graphics::Image &img, unsigned lv)
181 unsigned w = img.get_width();
182 unsigned h = img.get_height();
185 throw incompatible_data("Texture3D::load_image");
189 PixelFormat fmt = pixelformat_from_image(img);
190 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, d, lv);
192 image(0, img.get_pixels());
195 unsigned Texture3D::get_n_levels() const
197 unsigned s = max(width, height);
198 if(target!=GL_TEXTURE_2D_ARRAY)
201 for(; s; s>>=1, ++n) ;
205 LinAl::Vector<unsigned, 3> Texture3D::get_level_size(unsigned level) const
207 unsigned w = width>>level;
208 unsigned h = height>>level;
210 if(target!=GL_TEXTURE_2D_ARRAY)
220 return LinAl::Vector<unsigned, 3>(w, h, d);
223 UInt64 Texture3D::get_data_size() const
225 return id ? width*height*depth*get_pixel_size(storage_fmt) : 0;
229 Texture3D::Loader::Loader(Texture3D &t):
230 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t)
235 Texture3D::Loader::Loader(Texture3D &t, Collection &c):
236 DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t, c)
241 void Texture3D::Loader::init()
243 add("raw_data", &Loader::raw_data);
244 add("storage", &Loader::storage);
245 add("storage", &Loader::storage_levels);
248 void Texture3D::Loader::raw_data(const string &data)
250 obj.image(0, data.data());
253 void Texture3D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned d)
255 obj.storage(fmt, w, h, d);
258 void Texture3D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned d, unsigned l)
260 obj.storage(fmt, w, h, d, l);