X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Ftexture.h;h=71fa34076cb46028c3ac7b440096ea8f9c1b6535;hp=7c29865747e79f6e7972bc329885303ea09fe52e;hb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8;hpb=7adcad3b40a03000a82e32db4523761c218309b8

diff --git a/source/texture.h b/source/texture.h
index 7c298657..71fa3407 100644
--- a/source/texture.h
+++ b/source/texture.h
@@ -1,8 +1,10 @@
 #ifndef MSP_GL_TEXTURE_H_
 #define MSP_GL_TEXTURE_H_
 
-#include <GL/gl.h>
-#include "types.h"
+#include <istream>
+#include <msp/datafile/objectloader.h>
+#include "gl.h"
+#include "predicate.h"
 
 namespace Msp {
 namespace GL {
@@ -17,36 +19,89 @@ enum TextureFilter
 	LINEAR_MIPMAP_LINEAR   = GL_LINEAR_MIPMAP_LINEAR
 };
 
-enum TextureFormat
+std::istream &operator>>(std::istream &, TextureFilter &);
+
+
+enum TextureWrap
 {
-	LUMINANCE8,
-	LUMINANCE8_ALPHA8,
-	RGB8,
-	RGBA8,
-	BGR8,
-	BGRA8
+	REPEAT          = GL_REPEAT,
+	CLAMP_TO_EDGE   = GL_CLAMP_TO_EDGE,
+	MIRRORED_REPEAT = GL_MIRRORED_REPEAT
 };
 
+
+/**
+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.
+*/
 class Texture
 {
+protected:
+	class Loader: public DataFile::ObjectLoader<Texture>
+	{
+	public:
+		Loader(Texture &);
+		void generate_mipmap(bool);
+		void mag_filter(TextureFilter);
+		void min_filter(TextureFilter);
+		void wrap(TextureWrap);
+		void wrap_r(TextureWrap);
+		void wrap_s(TextureWrap);
+		void wrap_t(TextureWrap);
+	};
+
+	enum ParameterMask
+	{
+		MIN_FILTER = 1,
+		MAG_FILTER = 2,
+		WRAP_S = 4,
+		WRAP_T = 8,
+		WRAP_R = 16,
+		GENERATE_MIPMAP = 32,
+		COMPARE = 64,
+		COMPARE_FUNC = 128
+	};
+
+	unsigned id;
+	GLenum target;
+	TextureFilter min_filter;
+	TextureFilter mag_filter;
+	TextureWrap wrap_s;
+	TextureWrap wrap_t;
+	TextureWrap wrap_r;
+	bool gen_mipmap;
+	bool compare;
+	Predicate cmp_func;
+	mutable int dirty_params;
+
+	Texture(GLenum);
+	Texture(const Texture &);
+	Texture &operator=(const Texture &);
 public:
-	void bind() 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); }
-	uint  get_id() const                 { return id; }
-	sizei get_width(int =0) const;
-	sizei get_height(int =0) const;
-	sizei get_depth(int =0) const;
 	~Texture();
+
 protected:
-	uint   id;
-	GLenum target;
+	void update_parameter(int) const;
+public:
+	void set_min_filter(TextureFilter);
+	void set_mag_filter(TextureFilter);
+	void set_wrap(TextureWrap);
+	void set_wrap_s(TextureWrap);
+	void set_wrap_t(TextureWrap);
+	void set_wrap_r(TextureWrap);
+	void set_generate_mipmap(bool);
+	void set_compare_enabled(bool);
+	void set_compare_func(Predicate);
+	GLenum get_target() const { return target; }
+	unsigned get_id() const { return id; }
 
-	Texture();
+	void bind() const;
+	void bind_to(unsigned) const;
 
-	static const Texture *bound;
+	static const Texture *current();
+	static void unbind();
+	static void unbind_from(unsigned);
 };
 
 } // namespace GL