+++ /dev/null
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <cmath>
-#include <msp/gbase/image.h>
-#include "except.h"
-#include "extension.h"
-#include "texture3d.h"
-#include "version_1_2.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Texture3D::Texture3D():
- width(0),
- height(0),
- depth(0)
-{
- static RequireVersion _ver(1, 3);
-
- target=GL_TEXTURE_3D;
- bind();
-}
-
-void Texture3D::storage(PixelFormat f, sizei w, sizei h, sizei d, int b)
-{
- if(width>0)
- throw InvalidState("Textures may only be created once");
- if(w==0 || h==0 || d==0)
- throw InvalidParameterValue("Invalid texture dimensions");
-
- width=w;
- height=h;
- depth=d;
- ifmt=f;
- border=b;
-
- image(0, ifmt, UNSIGNED_BYTE, 0);
-}
-
-void Texture3D::image(int level, PixelFormat fmt, DataType type, const void *data)
-{
- maybe_bind();
- glTexImage3D(target, level, ifmt, width, height, depth, border, 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 IncompatibleData("Image height is not divisible by its width");
- 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 IncompatibleData("Could not find a square root of texture height");
- h=d;
- }
- else if(dp>0)
- d=dp;
-
- PixelFormat fmt=pixelformat_from_graphics(img.get_format());
- if(width==0)
- storage(fmt, w, h, d, 0);
- else if(w!=width || h!=height || d!=depth)
- throw IncompatibleData("Image does not match texture storage");
-
- image(0, fmt, UNSIGNED_INT, img.get_data());
-}
-
-} // namespace GL
-} // namespace Msp