2 #include <msp/graphics/image.h>
7 #include "version_1_2.h"
14 Texture3D::Texture3D():
15 Texture(GL_TEXTURE_3D),
21 static RequireVersion _ver(1, 2);
24 void Texture3D::storage(PixelFormat f, unsigned w, unsigned h, unsigned d)
27 throw invalid_operation("Texture3D::storage");
28 if(w==0 || h==0 || d==0)
29 throw invalid_argument("Texture3D::storage");
37 void Texture3D::allocate(unsigned level)
39 if(allocated&(1<<level))
42 image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
45 void Texture3D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
47 if(width==0 || height==0 || depth==0)
48 throw invalid_operation("Texture3D::image");
53 get_level_size(level, w, h, d);
55 Bind _bind(this, true);
56 glTexImage3D(target, level, ifmt, width, height, depth, 0, fmt, type, data);
58 allocated |= 1<<level;
59 if(gen_mipmap && level==0)
61 for(; (w || h || d); w>>=1, h>>=1, d>>=1, ++level) ;
62 allocated |= (1<<level)-1;
66 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, PixelFormat fmt, DataType type, const void *data)
68 if(width==0 || height==0 || depth==0)
69 throw invalid_operation("Texture3D::image");
73 Bind _bind(this, true);
74 glTexSubImage3D(target, level, x, y, z, wd, ht, dp, fmt, type, data);
77 void Texture3D::load_image(const string &fn, int dp)
82 unsigned w = img.get_width();
83 unsigned h = img.get_height();
89 throw incompatible_data("Texture3D::load_image");
95 for(d=h; d*d>h; d>>=2) ;
98 throw incompatible_data("Texture3D::load_image");
104 PixelFormat fmt = pixelformat_from_graphics(img.get_format());
106 storage(fmt, w, h, d);
107 else if(w!=width || h!=height || d!=depth)
108 throw incompatible_data("Texture3D::load_image");
110 image(0, fmt, UNSIGNED_INT, img.get_data());
113 void Texture3D::get_level_size(unsigned level, unsigned &w, unsigned &h, unsigned &d)