+++ /dev/null
-#include <cmath>
-#include <msp/graphics/image.h>
-#include "bindable.h"
-#include "error.h"
-#include "extension.h"
-#include "texture3d.h"
-#include "version_1_2.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Texture3D::Texture3D():
- Texture(GL_TEXTURE_3D),
- width(0),
- height(0),
- depth(0),
- allocated(0)
-{
- static RequireVersion _ver(1, 2);
-}
-
-void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp)
-{
- if(width>0)
- throw invalid_operation("Texture3D::storage");
- if(wd==0 || ht==0 || dp==0)
- throw invalid_argument("Texture3D::storage");
-
- width = wd;
- height = ht;
- depth = dp;
- ifmt = fmt;
-}
-
-void Texture3D::allocate(unsigned level)
-{
- if(allocated&(1<<level))
- return;
-
- image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
-}
-
-void Texture3D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
-{
- if(width==0 || height==0 || depth==0)
- throw invalid_operation("Texture3D::image");
-
- unsigned w = width;
- unsigned h = height;
- unsigned d = depth;
- get_level_size(level, w, h, d);
-
- Bind _bind(this, true);
- glTexImage3D(target, level, ifmt, width, height, depth, 0, fmt, type, data);
-
- allocated |= 1<<level;
- if(gen_mipmap && level==0)
- {
- for(; (w || h || d); w>>=1, h>>=1, d>>=1, ++level) ;
- allocated |= (1<<level)-1;
- }
-}
-
-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)
-{
- if(width==0 || height==0 || depth==0)
- throw invalid_operation("Texture3D::image");
-
- allocate(level);
-
- Bind _bind(this, true);
- glTexSubImage3D(target, level, x, y, z, wd, ht, dp, fmt, type, data);
-}
-
-void Texture3D::load_image(const string &fn, int dp)
-{
- Graphics::Image img;
- img.load_file(fn);
-
- unsigned w = img.get_width();
- unsigned h = img.get_height();
- unsigned d = 1;
-
- if(dp==-1)
- {
- if(h%w)
- throw incompatible_data("Texture3D::load_image");
- d = h/w;
- h = w;
- }
- else if(dp==-2)
- {
- for(d=h; d*d>h; d>>=2) ;
- for(; d*d<h; ++d) ;
- if(d*d!=h)
- throw incompatible_data("Texture3D::load_image");
- h = d;
- }
- else if(dp>0)
- {
- d = dp;
- if(h%d)
- throw incompatible_data("Texture3D::load_image");
- h /= d;
- }
- else
- throw invalid_argument("Texture3D::load_image");
-
- PixelFormat fmt = pixelformat_from_graphics(img.get_format());
- if(width==0)
- storage(fmt, w, h, d);
- else if(w!=width || h!=height || d!=depth)
- throw incompatible_data("Texture3D::load_image");
-
- image(0, fmt, UNSIGNED_INT, img.get_data());
-}
-
-void Texture3D::get_level_size(unsigned level, unsigned &w, unsigned &h, unsigned &d)
-{
- w >>= level;
- h >>= level;
- d >>= level;
-
- if(!w && (h || d))
- w = 1;
- if(!h && (w || d))
- h = 1;
- if(!d && (w || h))
- d = 1;
-}
-
-} // namespace GL
-} // namespace Msp