+++ /dev/null
-#include <cmath>
-#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"
-
-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),
- allocated(0)
-{
- static Require _req(EXT_texture3D);
-}
-
-void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
-{
- if(width>0)
- 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;
- levels = get_n_levels();
- if(lv>0)
- levels = min(levels, lv);
-}
-
-void Texture3D::allocate(unsigned level)
-{
- if(width==0 || height==0 || depth==0)
- throw invalid_operation("Texture3D::allocate");
- if(level>=levels)
- throw invalid_argument("Texture3D::allocate");
- if(allocated&(1<<level))
- return;
-
- if(ARB_texture_storage)
- {
- if(ARB_direct_state_access)
- glTextureStorage3D(id, levels, ifmt, width, height, depth);
- else
- {
- BindRestore _bind(this);
- glTexStorage3D(target, levels, ifmt, width, height, depth);
- }
- allocated |= (1<<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);
-
- BindRestore _bind(this);
-
- if(!allocated)
- glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
- glTexImage3D(target, level, ifmt, width, height, depth, 0, get_upload_format(fmt), type, data);
-
- allocated |= 1<<level;
- if(auto_gen_mipmap && level==0)
- {
- generate_mipmap();
- allocated |= (1<<levels)-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");
-
- 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(auto_gen_mipmap && level==0)
- generate_mipmap();
-}
-
-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(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, unsigned lv, bool srgb)
-{
- unsigned w = img.get_width();
- unsigned h = img.get_height();
- unsigned d = 1;
-
- 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(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h, d, lv);
- 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());
-}
-
-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;
-}
-
-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)
-{
- obj.storage(fmt, w, h, d);
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff