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>
13 Texture1D::Texture1D():
14 Texture(GL_TEXTURE_1D),
18 static Require _req(MSP_texture1D);
21 void Texture1D::storage(PixelFormat fmt, unsigned wd, unsigned lv)
25 if(fmt!=format || wd!=width || (lv && lv!=levels))
26 throw incompatible_data("Texture1D::storage");
30 throw invalid_argument("Texture1D::storage");
34 levels = get_n_levels();
36 levels = min(levels, lv);
39 void Texture1D::allocate(unsigned level)
42 throw invalid_operation("Texture1D::allocate");
44 throw invalid_argument("Texture1D::allocate");
46 bool direct = ARB_texture_storage && ARB_direct_state_access;
49 glActiveTexture(GL_TEXTURE0);
50 glBindTexture(target, id);
56 glBindTexture(target, 0);
59 void Texture1D::allocate_(unsigned level)
61 if(allocated&(1<<level))
64 if(ARB_texture_storage)
66 GLenum fmt = get_gl_pixelformat(storage_fmt);
67 if(ARB_direct_state_access)
68 glTextureStorage1D(id, levels, fmt, width);
70 glTexStorage1D(target, levels, fmt, width);
72 allocated |= (1<<levels)-1;
78 void Texture1D::image(unsigned level, const void *data)
81 throw invalid_operation("Texture1D::image");
83 throw out_of_range("Texture1D::image");
85 if(ARB_texture_storage)
86 return sub_image(level, 0, get_level_size(level), data);
88 glActiveTexture(GL_TEXTURE0);
89 glBindTexture(target, id);
93 if(auto_gen_mipmap && level==0)
96 allocated |= (1<<levels)-1;
99 glBindTexture(target, 0);
102 void Texture1D::image_(unsigned level, const void *data)
106 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
110 GLenum fmt = get_gl_pixelformat(storage_fmt);
111 GLenum comp = get_gl_components(get_components(storage_fmt));
112 GLenum type = get_gl_type(get_component_type(storage_fmt));
113 glTexImage1D(target, level, fmt, get_level_size(level), 0, comp, type, data);
115 allocated |= 1<<level;
118 void Texture1D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
120 if(comp!=get_components(format) || type!=get_component_type(format))
121 throw incompatible_data("Texture1D::image");
125 void Texture1D::sub_image(unsigned level, int x, unsigned wd, const void *data)
128 throw invalid_operation("Texture1D::sub_image");
130 throw out_of_range("Texture1D::sub_image");
132 bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
135 glActiveTexture(GL_TEXTURE0);
136 glBindTexture(target, id);
141 GLenum comp = get_gl_components(get_components(storage_fmt));
142 GLenum type = get_gl_type(get_component_type(storage_fmt));
143 if(ARB_direct_state_access)
144 glTextureSubImage1D(id, level, x, wd, comp, type, data);
146 glTexSubImage1D(target, level, x, wd, comp, type, data);
148 if(auto_gen_mipmap && level==0)
152 glBindTexture(target, 0);
155 void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelComponents comp, DataType type, const void *data)
157 if(comp!=get_components(format) || type!=get_component_type(format))
158 throw incompatible_data("Texture1D::sub_image");
159 sub_image(level, x, wd, data);
162 void Texture1D::image(const Graphics::Image &img, unsigned lv)
164 if(img.get_height()!=1)
165 throw incompatible_data("Texture1D::image");
167 unsigned w = img.get_width();
168 PixelFormat fmt = pixelformat_from_image(img);
169 storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
171 image(0, img.get_pixels());
174 unsigned Texture1D::get_n_levels() const
177 for(unsigned s=width; s; s>>=1, ++n) ;
181 unsigned Texture1D::get_level_size(unsigned level) const
186 UInt64 Texture1D::get_data_size() const
188 return id ? width*get_pixel_size(storage_fmt) : 0;
192 Texture1D::Loader::Loader(Texture1D &t):
193 DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t)
198 Texture1D::Loader::Loader(Texture1D &t, Collection &c):
199 DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t, c)
204 void Texture1D::Loader::init()
206 add("raw_data", &Loader::raw_data);
207 add("storage", &Loader::storage);
208 add("storage", &Loader::storage_levels);
211 void Texture1D::Loader::raw_data(const string &data)
213 obj.image(0, data.data());
216 void Texture1D::Loader::storage(PixelFormat fmt, unsigned w)
221 void Texture1D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned l)
223 obj.storage(fmt, w, l);