void OpenGLTexture3D::allocate()
{
- unsigned width = static_cast<const Texture3D *>(this)->width;
- unsigned height = static_cast<const Texture3D *>(this)->height;
- unsigned depth = static_cast<const Texture3D *>(this)->depth;
- unsigned levels = static_cast<const Texture3D *>(this)->levels;
+ const Texture3D &self = *static_cast<const Texture3D *>(this);
+
+ if(!id)
+ create();
GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
if(ARB_texture_storage)
{
if(ARB_direct_state_access)
- glTextureStorage3D(id, levels, gl_fmt, width, height, depth);
+ glTextureStorage3D(id, n_levels, gl_fmt, self.width, self.height, self.depth);
else
{
bind_scratch();
- glTexStorage3D(target, levels, gl_fmt, width, height, depth);
+ glTexStorage3D(target, n_levels, gl_fmt, self.width, self.height, self.depth);
}
}
else
bind_scratch();
GLenum comp = get_gl_components(get_components(storage_fmt));
GLenum type = get_gl_type(get_component_type(storage_fmt));
- for(unsigned i=0; i<levels; ++i)
+ for(unsigned i=0; i<n_levels; ++i)
{
- auto lv_size = static_cast<const Texture3D *>(this)->get_level_size(i);
+ auto lv_size = self.get_level_size(i);
glTexImage3D(target, i, gl_fmt, lv_size.x, lv_size.y, lv_size.z, 0, comp, type, 0);
}
- glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+ glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, n_levels-1);
}
apply_swizzle();
return target==GL_TEXTURE_2D_ARRAY;
}
+size_t OpenGLTexture3D::get_data_size() const
+{
+ if(!id)
+ return 0;
+
+ const Texture3D &self = *static_cast<const Texture3D *>(this);
+
+ size_t level_size = self.width*self.height*self.depth*get_pixel_size(format);
+ size_t total_size = level_size;
+ for(unsigned i=0; i<n_levels; ++i, level_size>>=2)
+ total_size += level_size;
+ return total_size;
+}
+
} // namespace GL
} // namespace Msp