-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#include <cmath>
-#include "except.h"
-#include "extension.h"
-#include "ilwrap.h"
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_texture_storage.h>
+#include <msp/gl/extensions/ext_texture3d.h>
+#include <msp/gl/extensions/ext_texture_array.h>
+#include <msp/graphics/image.h>
+#include "bindable.h"
+#include "error.h"
+#include "pixelstore.h"
#include "texture3d.h"
-#include "version_1_2.h"
using namespace std;
namespace Msp {
namespace GL {
+Texture3D::Texture3D(GLenum t):
+ Texture(t),
+ width(0),
+ height(0),
+ depth(0),
+ allocated(0)
+{ }
+
Texture3D::Texture3D():
+ Texture(GL_TEXTURE_3D),
width(0),
height(0),
- depth(0)
+ depth(0),
+ allocated(0)
{
- require_version(1, 3);
-
- target=GL_TEXTURE_3D;
- bind();
+ static Require _req(EXT_texture3D);
}
-void Texture3D::storage(PixelFormat f, sizei w, sizei h, sizei d, int b)
+void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp)
{
if(width>0)
- throw InvalidState("Textures may only be created once");
- if(w==0 || h==0 || d==0)
- throw InvalidParameterValue("Invalid texture dimensions");
+ throw invalid_operation("Texture3D::storage");
+ if(wd==0 || ht==0 || dp==0)
+ throw invalid_argument("Texture3D::storage");
+
+ set_internal_format(fmt);
+ width = wd;
+ height = ht;
+ depth = dp;
+}
+
+void Texture3D::allocate(unsigned level)
+{
+ if(allocated&(1<<level))
+ return;
+
+ if(ARB_texture_storage)
+ {
+ unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
+ if(ARB_direct_state_access)
+ glTextureStorage3D(id, n_levels, ifmt, width, height, depth);
+ else
+ {
+ BindRestore _bind(this);
+ glTexStorage3D(target, n_levels, ifmt, width, height, depth);
+ }
+ allocated |= (1<<n_levels)-1;
+ }
+ else
+ {
+ PixelFormat base_fmt = get_base_pixelformat(ifmt);
+ image(level, base_fmt, get_alloc_type(base_fmt), 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);
+
+ if(ARB_texture_storage)
+ return sub_image(level, 0, 0, 0, w, h, d, fmt, type, data);
- width=w;
- height=h;
- depth=d;
- ifmt=f;
- border=b;
+ BindRestore _bind(this);
+ glTexImage3D(target, level, ifmt, width, height, depth, 0, get_upload_format(fmt), type, data);
- image(0, ifmt, UNSIGNED_BYTE, 0);
+ allocated |= 1<<level;
+ if(gen_mipmap && level==0)
+ {
+ auto_generate_mipmap();
+ allocated |= (1<<get_n_levels())-1;
+ }
}
-void Texture3D::image(int level, PixelFormat fmt, DataType type, const void *data)
+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)
{
- maybe_bind();
- glTexImage3D(target, level, ifmt, width, height, depth, border, fmt, type, data);
+ if(width==0 || height==0 || depth==0)
+ throw invalid_operation("Texture3D::image");
+
+ Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+ allocate(level);
+
+ fmt = get_upload_format(fmt);
+ if(ARB_direct_state_access)
+ glTextureSubImage3D(id, level, x, y, z, wd, ht, dp, fmt, type, data);
+ else
+ glTexSubImage3D(target, level, x, y, z, wd, ht, dp, fmt, type, data);
+
+ if(gen_mipmap && level==0)
+ auto_generate_mipmap();
}
void Texture3D::load_image(const string &fn, int dp)
{
- Image img;
+ Graphics::Image img;
img.load_file(fn);
- unsigned w=img.get_width();
- unsigned h=img.get_height();
- unsigned d=1;
+ 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;
+ 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);
+ 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;
+ throw incompatible_data("Texture3D::load_image");
+ h = d;
}
else if(dp>0)
- d=dp;
+ {
+ 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(storage_pixelformat_from_graphics(img.get_format()), w, h, d);
+ else if(w!=width || h!=height || d!=depth)
+ throw incompatible_data("Texture3D::load_image");
+
+ PixelStore pstore = PixelStore::from_image(img);
+ BindRestore _bind_ps(pstore);
+
+ image(0, fmt, UNSIGNED_BYTE, img.get_data());
+}
+
+void Texture3D::image(const Graphics::Image &img, bool srgb)
+{
+ unsigned w = img.get_width();
+ unsigned h = img.get_height();
+ unsigned d = 1;
- PixelFormat fmt=img.get_format();
+ if(depth)
+ {
+ if(h%depth)
+ throw incompatible_data("Texture3D::load_image");
+ h /= depth;
+ d = depth;
+ }
+ else
+ {
+ if(h%w)
+ throw incompatible_data("Texture3D::load_image");
+ d = h/w;
+ h = w;
+ }
+
+ PixelFormat fmt = pixelformat_from_graphics(img.get_format());
if(width==0)
- storage(fmt, w, h, d, 0);
+ storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h, d);
else if(w!=width || h!=height || d!=depth)
- throw IncompatibleData("Image does not match texture storage");
+ throw incompatible_data("Texture3D::load_image");
+
+ PixelStore pstore = PixelStore::from_image(img);
+ BindRestore _bind_ps(pstore);
+
+ image(0, fmt, UNSIGNED_BYTE, img.get_data());
+}
+
+unsigned Texture3D::get_n_levels() const
+{
+ unsigned s = max(width, height);
+ if(target!=GL_TEXTURE_2D_ARRAY)
+ s = max(s, depth);
+ unsigned n = 0;
+ for(; s; s>>=1, ++n) ;
+ return n;
+}
+
+void Texture3D::get_level_size(unsigned level, unsigned &w, unsigned &h, unsigned &d) const
+{
+ w >>= level;
+ h >>= level;
+ if(target!=GL_TEXTURE_2D_ARRAY)
+ d >>= level;
+
+ if(!w && (h || d))
+ w = 1;
+ if(!h && (w || d))
+ h = 1;
+ if(!d && (w || h))
+ d = 1;
+}
- image(0, fmt, UNSIGNED_INT, img.get_data());
+UInt64 Texture3D::get_data_size() const
+{
+ return id ? width*height*depth*get_pixel_size(ifmt) : 0;
+}
+
+
+Texture3D::Loader::Loader(Texture3D &t):
+ DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t)
+{
+ init();
+}
+
+Texture3D::Loader::Loader(Texture3D &t, Collection &c):
+ DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>(t, c)
+{
+ init();
+}
+
+void Texture3D::Loader::init()
+{
+ add("raw_data", &Loader::raw_data);
+ add("storage", &Loader::storage);
+}
+
+void Texture3D::Loader::raw_data(const string &data)
+{
+ obj.image(0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
+}
+
+void Texture3D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned d)
+{
+ if(srgb)
+ fmt = get_srgb_pixelformat(fmt);
+ obj.storage(fmt, w, h, d);
}
} // namespace GL
projects / libs / gl.git / blobdiff