-#ifndef MSP_GL_TEXTURE3D_H_
-#define MSP_GL_TEXTURE3D_H_
-
-#include <string>
-#include "texture.h"
-
-namespace Msp {
-namespace GL {
-
-/**
-Three-dimensional texture. Consists of an array of texels in the shape of a
-right cuboid. Texture coordinates have a principal range of [0, 1].
-*/
-class Texture3D: public Texture
-{
-public:
- class Loader: public Msp::DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>
- {
- public:
- Loader(Texture3D &);
- Loader(Texture3D &, Collection &);
- private:
- void init();
-
- void raw_data(const std::string &);
- void storage(PixelFormat, unsigned, unsigned, unsigned);
- void storage_levels(PixelFormat, unsigned, unsigned, unsigned, unsigned);
- };
-
-private:
- unsigned width;
- unsigned height;
- unsigned depth;
- unsigned levels;
- unsigned allocated;
-
-protected:
- Texture3D(GLenum);
-public:
- Texture3D();
-
- /** Defines storage structure for the texture. If lv is zero, the number
- of mipmap levels is automatically determined from storage dimensions.
-
- Must be called before an image can be uploaded. Once storage is defined,
- it can't be changed. */
- void storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv = 0);
-
- /** Allocates storage for the texture. The contents are initially
- undefined. If storage has already been allocated, does nothing. */
- void allocate(unsigned level);
-
- /** Uploads an image to the texture. Storage must be defined beforehand.
- The image data must have dimensions and format compatible with the defined
- storage. */
- void image(unsigned level, PixelFormat fmt, DataType type, const void *data);
-
- /** Updates a cuboid-shaped region of the texture. Storage must be defined
- and allocated beforehand. The update region must be fully inside the
- texture. */
- void sub_image(unsigned level,
- int x, int y, int z, unsigned wd, unsigned ht, unsigned dp,
- PixelFormat fmt, DataType type, const void *data);
-
- /** Loads an image from a file and uploads it to the texture. If storage
- has not been defined, it will be set to match the loaded image. To
- construct a three-dimensional texture from a two-dimensional image, the
- image is interpreted as an array of consecutive images. If dp is -1, the
- texture's width and height are equal. If dp is -2, the texture's height and
- depth are equal. Otherwise, dp must be positive and determines the
- texture's depth. In all cases, the image's height must equal the texture's
- height times its depth.
-
- Deprecated in favor of the base class version.*/
- DEPRECATED void load_image(const std::string &fn, int dp = -1);
-
- using Texture::load_image;
-
- /** Uploads an image to the texture. If storage has not been defined, it
- will be set to match the image. In this case the image will be treated as
- a stack of square layers and its height must be divisible by its width.
- Otherwise the image must be compatible with the defined storage.
-
- If srgb is true and storage is determined by this call, then an sRGB pixel
- format will be used. */
- virtual void image(const Graphics::Image &, unsigned, bool = false);
-
- using Texture::image;
-
- unsigned get_width() const { return width; }
- unsigned get_height() const { return height; }
- unsigned get_depth() const { return depth; }
-protected:
- unsigned get_n_levels() const;
- void get_level_size(unsigned, unsigned &, unsigned &, unsigned &) const;
-
-public:
- virtual AsyncLoader *load(IO::Seekable &, const Resources * = 0) { return 0; }
- virtual UInt64 get_data_size() const;
- virtual void unload() { }
-};
-
-} // namespace GL
-} // namespace Msp
-
-#endif