Implement loading functionality for texture classes that were missing it

[libs/gl.git] / source / texture3d.cpp

diff --git a/source/texture3d.cpp b/source/texture3d.cpp
index 3d322d4b9bd9c14834097c81773c085e9bda7584..8b014aee0c262fb811444c1c44a1fba0083df21e 100644 (file)
--- a/source/texture3d.cpp
+++ b/source/texture3d.cpp
@@ -13,6 +13,7 @@ namespace GL {
 
 Texture3D::Texture3D():
        Texture(GL_TEXTURE_3D),
+       ifmt(RGB),
        width(0),
        height(0),
        depth(0),
@@ -40,7 +41,8 @@ void Texture3D::allocate(unsigned level)
        if(allocated&(1<<level))
                return;
 
-       image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
+       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)
@@ -53,12 +55,13 @@ void Texture3D::image(unsigned level, PixelFormat fmt, DataType type, const void
        unsigned d = depth;
        get_level_size(level, w, h, d);
 
-       Bind _bind(this, true);
+       BindRestore _bind(this);
        glTexImage3D(target, level, ifmt, width, height, depth, 0, fmt, type, data);
 
        allocated |= 1<<level;
        if(gen_mipmap && level==0)
        {
+               auto_generate_mipmap();
                for(; (w || h || d); w>>=1, h>>=1, d>>=1, ++level) ;
                allocated |= (1<<level)-1;
        }
@@ -71,7 +74,7 @@ void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsi
 
        allocate(level);
 
-       Bind _bind(this, true);
+       BindRestore _bind(this);
        glTexSubImage3D(target, level, x, y, z, wd, ht, dp, fmt, type, data);
 }
 
@@ -116,7 +119,40 @@ void Texture3D::load_image(const string &fn, int dp)
                throw incompatible_data("Texture3D::load_image");
 
        PixelStore pstore = PixelStore::from_image(img);
-       Bind _bind_ps(pstore, true);
+       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;
+
+       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);
+       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());
 }
@@ -135,5 +171,41 @@ void Texture3D::get_level_size(unsigned level, unsigned &w, unsigned &h, unsigne
                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)
+{
+       if(srgb)
+               fmt = get_srgb_pixelformat(fmt);
+       obj.storage(fmt, w, h, d);
+}
+
 } // namespace GL
 } // namespace Msp