#include <string>
#include <msp/linal/vector.h>
-#include "texture.h"
+#include "texture3d_backend.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].
+Three-dimensional texture, consisting of a cuboid-shaped array of texels.
*/
-class Texture3D: public Texture
+class Texture3D: public Texture3DBackend
{
+ friend Texture3DBackend;
+
public:
class Loader: public Msp::DataFile::DerivedObjectLoader<Texture3D, Texture::Loader>
{
private:
void init();
- void raw_data(const std::string &);
void storage(PixelFormat, unsigned, unsigned, unsigned);
void storage_levels(PixelFormat, unsigned, unsigned, unsigned, unsigned);
};
protected:
- unsigned width;
- unsigned height;
- unsigned depth;
- unsigned levels;
- unsigned allocated;
+ unsigned width = 0;
+ unsigned height = 0;
+ unsigned depth = 0;
+ unsigned levels = 0;
- Texture3D(GLenum);
+ Texture3D(unsigned);
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);
-
- DEPRECATED void storage(PixelComponents c, unsigned w, unsigned h, unsigned d, unsigned l = 0)
- { storage(make_pixelformat(c, UNSIGNED_BYTE), w, h, d, l); }
-
- /** Allocates storage for the texture. The contents are initially
- undefined. If storage has already been allocated, does nothing. */
- void allocate(unsigned level);
-
- /** Updates the contents of the entire texture. Storage must be defined
- beforehand. The image data must have dimensions and format matching the
- defined storage. */
- void image(unsigned level, const void *data);
-
- DEPRECATED void image(unsigned level, PixelComponents comp, DataType type, const void *data);
-
- /** Updates a cuboid-shaped region of the texture. Storage must be defined
- beforehand. The image data must be in a format mathing the defined storage
- and 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, const void *data);
-
- DEPRECATED void sub_image(unsigned level,
- int x, int y, int z, unsigned wd, unsigned ht, unsigned dp,
- PixelComponents comp, DataType type, const void *data);
-
- /** Updates the contents of the entire texture from an image. 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 match the defined
- storage. */
+ Texture3D() = default;
+
+ /** Sets storage format and dimensions and allocates memory for the texture.
+ If lv is zero, a complete mipmap pyramid is automatically created. Storage
+ cannot be changed once set. */
+ void storage(PixelFormat, unsigned wd, unsigned ht, unsigned dp, unsigned lv = 0);
+
+ /** Replaces contents of an entire mipmap level. Allocated storage must
+ exist. The image data is interpreted according to the storage format and
+ must have size matching the selected mipmap level. */
+ void image(unsigned level, const void *);
+
+ /** Replaces a cuboid-shaped region of the texture. Allocated storage must
+ exist. The image data is interpreted according to the storage format and
+ the region must be fully inside the texture. */
+ void sub_image(unsigned level, unsigned x, unsigned y, unsigned z, unsigned wd, unsigned ht, unsigned dp, const void *);
+
+ /** Sets the texture's contents from an image. The image is treated as a
+ stack of square layers and its height must be divisible by its width. If
+ storage has not been allocated yet, it will be set to match the image.
+ Otherwise the image must be compatible with the existing storage. */
virtual void image(const Graphics::Image &, unsigned = 0);
- using Texture::image;
-
unsigned get_width() const { return width; }
unsigned get_height() const { return height; }
unsigned get_depth() const { return depth; }
public:
virtual AsyncLoader *load(IO::Seekable &, const Resources * = 0) { return 0; }
- virtual UInt64 get_data_size() const;
+ virtual std::size_t get_data_size() const;
virtual void unload() { }
};