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>
4 #include <msp/gl/extensions/msp_texture1d.h>
14 Texture1D::Texture1D():
15 Texture(GL_TEXTURE_1D),
19 static Require _req(MSP_texture1D);
22 void Texture1D::storage(PixelFormat fmt, unsigned wd, unsigned lv)
25 throw invalid_operation("Texture1D::storage");
27 throw invalid_argument("Texture1D::storage");
29 set_internal_format(fmt);
31 levels = get_n_levels();
33 levels = min(levels, lv);
36 void Texture1D::allocate(unsigned level)
39 throw invalid_operation("Texture1D::allocate");
41 throw invalid_argument("Texture1D::allocate");
42 if(allocated&(1<<level))
45 if(ARB_texture_storage)
47 Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
48 if(ARB_direct_state_access)
49 glTextureStorage1D(id, levels, ifmt, width);
51 glTexStorage1D(target, levels, ifmt, width);
53 allocated |= (1<<levels)-1;
56 image(level, get_components(ifmt), get_component_type(ifmt), 0);
59 void Texture1D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
62 throw invalid_operation("Texture1D::image");
64 unsigned w = get_level_size(level);
66 if(ARB_texture_storage)
67 return sub_image(level, 0, w, comp, type, data);
69 BindRestore _bind(this);
73 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
76 glTexImage1D(target, level, ifmt, w, 0, get_upload_components(comp), type, data);
78 allocated |= 1<<level;
79 if(auto_gen_mipmap && level==0)
82 allocated |= (1<<levels)-1;
86 void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelComponents comp, DataType type, const void *data)
89 throw invalid_operation("Texture3D::image");
91 Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
94 comp = get_upload_components(comp);
95 if(ARB_direct_state_access)
96 glTextureSubImage1D(id, level, x, wd, comp, type, data);
98 glTexSubImage1D(target, level, x, wd, comp, type, data);
100 if(auto_gen_mipmap && level==0)
104 void Texture1D::image(const Graphics::Image &img, unsigned lv, bool srgb)
106 if(img.get_height()!=1)
107 throw incompatible_data("Texture1D::image");
109 unsigned w = img.get_width();
110 PixelFormat fmt = pixelformat_from_image(img);
111 PixelComponents comp = get_components(fmt);
112 DataType type = get_component_type(fmt);
114 storage(make_pixelformat(comp, type, srgb), w, lv);
116 throw incompatible_data("Texture1D::image");
118 image(0, comp, type, img.get_data());
121 unsigned Texture1D::get_n_levels() const
124 for(unsigned s=width; s; s>>=1, ++n) ;
128 unsigned Texture1D::get_level_size(unsigned level) const
133 UInt64 Texture1D::get_data_size() const
135 return id ? width*get_pixel_size(ifmt) : 0;
139 Texture1D::Loader::Loader(Texture1D &t):
140 DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t)
145 Texture1D::Loader::Loader(Texture1D &t, Collection &c):
146 DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t, c)
151 void Texture1D::Loader::init()
153 add("raw_data", &Loader::raw_data);
154 add("storage", &Loader::storage);
155 add("storage", &Loader::storage_levels);
158 void Texture1D::Loader::raw_data(const string &data)
160 obj.image(0, get_components(obj.ifmt), get_component_type(obj.ifmt), data.data());
163 void Texture1D::Loader::storage(PixelFormat fmt, unsigned w)
168 void Texture1D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned l)
170 obj.storage(fmt, w, l);