+++ /dev/null
-#ifndef MSP_GL_TEXTURE_H_
-#define MSP_GL_TEXTURE_H_
-
-#include <msp/core/attributes.h>
-#include <msp/datafile/objectloader.h>
-#include <msp/graphics/image.h>
-#include "datatype.h"
-#include "gl.h"
-#include "pixelformat.h"
-#include "predicate.h"
-#include "sampler.h"
-#include "resource.h"
-
-namespace Msp {
-namespace GL {
-
-/**
-Base class for textures. This class only defines operations common for all
-texture types and is not instantiable. For specifying images for textures,
-see one of the dimensioned texture classes.
-
-A texture can consinst of a stack of images, called a mipmap. The dimensions
-of each mipmap level are half that of the previous level. The mipmap stack
-can be used for texture minification; see the Sampler class for details.
-*/
-class Texture: public Resource
-{
-protected:
- class Loader: public DataFile::CollectionObjectLoader<Texture>
- {
- protected:
- unsigned levels;
- bool srgb;
-
- public:
- Loader(Texture &);
- Loader(Texture &, Collection &);
- private:
- void init();
-
- unsigned get_levels() const;
-
- void external_image(const std::string &);
- void filter(TextureFilter);
- void generate_mipmap(bool);
- void image_data(const std::string &);
- void mag_filter(TextureFilter);
- void max_anisotropy(float);
- void min_filter(TextureFilter);
- void mipmap_levels(unsigned);
- void sampler();
- void wrap(TextureWrap);
- void wrap_r(TextureWrap);
- void wrap_s(TextureWrap);
- void wrap_t(TextureWrap);
- };
-
- enum ParameterMask
- {
- FORMAT_SWIZZLE = 512
- };
-
- enum FormatSwizzle
- {
- NO_SWIZZLE,
- R_TO_LUMINANCE,
- RG_TO_LUMINANCE_ALPHA,
- RGB_TO_BGR
- };
-
- unsigned id;
- GLenum target;
- PixelFormat ifmt;
- FormatSwizzle swizzle;
- bool auto_gen_mipmap;
- Sampler default_sampler;
-
- static int swizzle_orders[];
-
- Texture(GLenum, ResourceManager * = 0);
- Texture(const Texture &);
- Texture &operator=(const Texture &);
-public:
- ~Texture();
-
-protected:
- void set_internal_format(PixelFormat);
- PixelComponents get_upload_components(PixelComponents) const;
- void apply_swizzle();
- void set_parameter_i(GLenum, int) const;
-
-public:
- Sampler &get_default_sampler() { return default_sampler; }
- const Sampler &get_default_sampler() const { return default_sampler; }
-
- DEPRECATED void set_min_filter(TextureFilter);
- DEPRECATED void set_mag_filter(TextureFilter);
-
- /** Sets filter for both minification and magnification. Since mipmapping
- is not applicable to magnification, LINEAR is used instead. */
- DEPRECATED void set_filter(TextureFilter);
-
- DEPRECATED void set_mipmap_levels(unsigned) { }
-
- DEPRECATED void set_max_anisotropy(float);
-
- /** Sets the wrapping mode for all coordinates. */
- DEPRECATED void set_wrap(TextureWrap);
-
- DEPRECATED void set_wrap_s(TextureWrap);
- DEPRECATED void set_wrap_t(TextureWrap);
- DEPRECATED void set_wrap_r(TextureWrap);
-
- static bool can_generate_mipmap();
-
- void generate_mipmap();
-
- /** Sets automatic mipmap generation. If enabled, mipmaps are generated
- when a texture image is uploaded. */
- void set_auto_generate_mipmap(bool);
-
- /// Deprecated. Use set_auto_generate_mipmap instead.
- DEPRECATED void set_generate_mipmap(bool g) { set_auto_generate_mipmap(g); }
-
- /** Sets depth texture comparison. Has no effect on other formats. When
- comparison is enabled, the third component of the texture coordinate is
- compared against the texel value, and the result is returned as the texture
- sample. */
- DEPRECATED void set_compare_enabled(bool);
-
- /** Sets the function to use for depth comparison. */
- DEPRECATED void set_compare_func(Predicate);
-
- /// Loads a Graphics::Image from a file and uploads it to the texture.
- virtual void load_image(const std::string &, bool srgb = false);
-
- virtual void load_image(const std::string &, unsigned, bool srgb = false);
-
- /** 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. Semantics depend on the type of texture.
-
- 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);
-
- virtual void image(const Graphics::Image &, unsigned, bool srgb = false) = 0;
-
- GLenum get_target() const { return target; }
- unsigned get_id() const { return id; }
-
- void bind() const { bind_to(0); }
- void bind_to(unsigned) const;
-
- static const Texture *current(unsigned = 0);
- static void unbind() { unbind_from(0); }
- static void unbind_from(unsigned);
-
- virtual UInt64 get_data_size() const { return 0; }
-};
-
-} // namespace GL
-} // namespace Msp
-
-#endif