+++ /dev/null
-#ifndef MSP_GL_TEXTURE3D_H_
-#define MSP_GL_TEXTURE3D_H_
-
-#include <string>
-#include "datatype.h"
-#include "pixelformat.h"
-#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
-{
-private:
- PixelFormat ifmt;
- unsigned width;
- unsigned height;
- unsigned depth;
- unsigned allocated;
-
-public:
- Texture3D();
-
- /** Defines storage structure for the texture. 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);
-
- /** 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. */
- void load_image(const std::string &fn, int dp = -1);
-
- unsigned get_width() const { return width; }
- unsigned get_height() const { return height; }
- unsigned get_depth() const { return depth; }
-private:
- void get_level_size(unsigned, unsigned &, unsigned &, unsigned &);
-};
-
-} // namespace GL
-} // namespace Msp
-
-#endif