-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_GL_TEXTURE_H_
#define MSP_GL_TEXTURE_H_
-#include <istream>
+#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 {
-enum TextureFilter
-{
- NEAREST = GL_NEAREST,
- LINEAR = GL_LINEAR,
- NEAREST_MIPMAP_NEAREST = GL_NEAREST_MIPMAP_NEAREST,
- NEAREST_MIPMAP_LINEAR = GL_NEAREST_MIPMAP_LINEAR,
- LINEAR_MIPMAP_NEAREST = GL_LINEAR_MIPMAP_NEAREST,
- LINEAR_MIPMAP_LINEAR = GL_LINEAR_MIPMAP_LINEAR
-};
-
-std::istream &operator>>(std::istream &, TextureFilter &);
-
-
/**
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.
+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
+class Texture: public Resource
{
protected:
- class Loader: public DataFile::ObjectLoader<Texture>
+ class Loader: public DataFile::CollectionObjectLoader<Texture>
{
+ protected:
+ unsigned levels;
+
public:
Loader(Texture &);
- void min_filter(TextureFilter);
- void mag_filter(TextureFilter);
+ Loader(Texture &, Collection &);
+ private:
+ void init();
+
+ unsigned get_levels() const;
+ protected:
+ void load_external_image(Graphics::Image &, const std::string &);
+
+ private:
+ void external_image(const std::string &);
+ void external_image_srgb(const std::string &);
+ void external_image_common(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 format;
+ PixelFormat storage_fmt;
+ FormatSwizzle swizzle;
+ bool use_srgb_format;
+ bool auto_gen_mipmap;
+ Sampler default_sampler;
+
+ static int swizzle_orders[];
+
+ Texture(GLenum, ResourceManager * = 0);
+ Texture(const Texture &);
+ Texture &operator=(const Texture &);
public:
~Texture();
- void bind() const;
+protected:
+ void set_format(PixelFormat);
+ 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 &, unsigned = 0);
+
+ DEPRECATED void load_image(const std::string &, bool srgb);
+
+ /** 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. */
+ virtual void image(const Graphics::Image &, unsigned = 0) = 0;
+
+ DEPRECATED void image(const Graphics::Image &, bool srgb);
+
+ GLenum get_target() const { return target; }
+ unsigned get_id() const { return id; }
+
+ void bind() const { bind_to(0); }
void bind_to(unsigned) const;
- void parameter(GLenum, int);
- void parameter(GLenum, float);
- void set_min_filter(TextureFilter f) { parameter(GL_TEXTURE_MIN_FILTER, f); }
- void set_mag_filter(TextureFilter f) { parameter(GL_TEXTURE_MAG_FILTER, f); }
- GLenum get_target() const { return target; }
- unsigned get_id() const { return id; }
-
- static void unbind();
+
+ static const Texture *current(unsigned = 0);
+ static void unbind() { unbind_from(0); }
static void unbind_from(unsigned);
-protected:
- unsigned id;
- GLenum target;
- Texture();
- Texture(const Texture &);
- Texture &operator=(const Texture &);
- void maybe_bind() const;
+ virtual UInt64 get_data_size() const { return 0; }
};
} // namespace GL
projects / libs / gl.git / blobdiff