Add a function to set depth clip of EnvironmentMap

[libs/gl.git] / source / texture2d.h

diff --git a/source/texture2d.h b/source/texture2d.h
index e06ea920a1aff896f7c1c50ed1f87fac75e7b007..1f8b5f7ea557e94abcded7d8f7fd423b7fea7cdd 100644 (file)
--- a/source/texture2d.h
+++ b/source/texture2d.h
@@ -1,31 +1,86 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GL_TEXTURE2D_H_
 #define MSP_GL_TEXTURE2D_H_
 
 #include <string>
+#include <msp/graphics/image.h>
 #include "texture.h"
 
 namespace Msp {
 namespace GL {
 
+/**
+Two-dimensional texture.  Consists of an array of texels in the shape of a
+rectangle.  Texture coordinate have a range of [0, 1].  Coordinates outside of
+this range are subject to wrapping.  This is the most common type of texture.
+*/
 class Texture2D: public Texture
 {
 public:
-       Texture2D();
-       void image(int, int, sizei, sizei, int, GLenum, GLenum, void *);
-       void image(int, sizei, sizei, TextureFormat, void *);
-       void image(const std::string &);
-       sizei get_width() const  { return width_; }
-       sizei get_height() const { return height_; }
+       class Loader: public Msp::DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>
+       {
+       public:
+               Loader(Texture2D &);
+               Loader(Texture2D &, Collection &);
+       private:
+               void init();
+
+               void raw_data(const std::string &);
+               void storage(PixelFormat, unsigned, unsigned);
+       };
+
 private:
-       sizei width_;
-       sizei height_;
+       class AsyncLoader;
+
+       unsigned width;
+       unsigned height;
+       unsigned allocated;
+
+public:
+       Texture2D(ResourceManager * = 0);
+       virtual ~Texture2D();
+
+       /** 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);
+
+       /** 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 rectangular 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, unsigned wd, unsigned ht,
+               PixelFormat fmt, DataType type, const void *data);
+
+       /** Uploads an image to the texture.  If storage has not been defined, it
+       will be set to match the image.  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 &, bool srgb = false);
+
+private:
+       void image(const Graphics::Image &, bool, bool);
+
+public:
+       unsigned get_width() const { return width; }
+       unsigned get_height() const { return height; }
+
+private:
+       unsigned get_n_levels() const;
+       void get_level_size(unsigned, unsigned &, unsigned &) const;
+
+public:
+       virtual Resource::AsyncLoader *load(IO::Seekable &, const Resources * = 0);
+       virtual UInt64 get_data_size() const;
+       virtual void unload();
 };
 
 } // namespace GL