X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fsampler.h;h=c79068775b144499943196b316dc0f8f0406f75b;hp=f68f1a16183545c315a224017bd7b1ddd292adae;hb=38712d8ecc57d043a2419ffbaeeb57f7a6586f14;hpb=fcde8390ad577fe434dcd4b29e0f410d29f867c9

diff --git a/source/core/sampler.h b/source/core/sampler.h
index f68f1a16..c7906877 100644
--- a/source/core/sampler.h
+++ b/source/core/sampler.h
@@ -3,8 +3,8 @@
 
 #include <msp/datafile/objectloader.h>
 #include "color.h"
-#include "gl.h"
 #include "predicate.h"
+#include "sampler_backend.h"
 
 namespace Msp {
 namespace GL {
@@ -12,42 +12,40 @@ namespace GL {
 enum TextureFilter
 {
 	/// No filtering
-	NEAREST = GL_NEAREST,
+	NEAREST,
 
 	/// Bilinear filtering
-	LINEAR = GL_LINEAR,
+	LINEAR,
 
 	/// Mipmapping without filtering
-	NEAREST_MIPMAP_NEAREST = GL_NEAREST_MIPMAP_NEAREST,
+	NEAREST_MIPMAP_NEAREST,
 
 	/// Linear filtering between two mipmap levels
-	NEAREST_MIPMAP_LINEAR = GL_NEAREST_MIPMAP_LINEAR,
+	NEAREST_MIPMAP_LINEAR,
 
 	/// Bilinear filtering on the closest mipmap level
-	LINEAR_MIPMAP_NEAREST = GL_LINEAR_MIPMAP_NEAREST,
+	LINEAR_MIPMAP_NEAREST,
 
 	/// Trilinear filtering between two mipmap levels
-	LINEAR_MIPMAP_LINEAR = GL_LINEAR_MIPMAP_LINEAR
+	LINEAR_MIPMAP_LINEAR
 };
 
 
 enum TextureWrap
 {
 	/// Tile the texture infinitely
-	REPEAT = GL_REPEAT,
+	REPEAT,
 
 	/// Extend the texels at the edge of the texture to infinity
-	CLAMP_TO_EDGE = GL_CLAMP_TO_EDGE,
+	CLAMP_TO_EDGE,
 
 	/// Sampling outside the texture will return border color
-	CLAMP_TO_BORDER = GL_CLAMP_TO_BORDER,
+	CLAMP_TO_BORDER,
 
 	/// Tile the texture, with every other repetition mirrored
-	MIRRORED_REPEAT = GL_MIRRORED_REPEAT
+	MIRRORED_REPEAT
 };
 
-class Texture;
-
 
 /**
 Samplers are used to access texture data in shaders.  To use a sampler with a
@@ -63,8 +61,10 @@ for magnification and NEAREST_MIPMAP_LINEAR for minification.
 If texture coordinates fall outside of the principal range of the texture,
 wrapping is applied.  The default for all directions is REPEAT.
 */
-class Sampler
+class Sampler: public SamplerBackend
 {
+	friend SamplerBackend;
+
 public:
 	class Loader: public DataFile::ObjectLoader<Sampler>
 	{
@@ -98,29 +98,18 @@ private:
 		COMPARE = 128
 	};
 
-	unsigned id;
-	const Texture *owner;
-	TextureFilter min_filter;
-	TextureFilter mag_filter;
-	float max_anisotropy;
-	TextureWrap wrap_s;
-	TextureWrap wrap_t;
-	TextureWrap wrap_r;
-	Color border_color;
-	bool compare;
-	Predicate cmp_func;
-	mutable int dirty_params;
+	TextureFilter min_filter = NEAREST_MIPMAP_LINEAR;
+	TextureFilter mag_filter = LINEAR;
+	float max_anisotropy = 1.0f;
+	TextureWrap wrap_s = REPEAT;
+	TextureWrap wrap_t = REPEAT;
+	TextureWrap wrap_r = REPEAT;
+	Color border_color = { 0.0f, 0.0f, 0.0f, 0.0f };
+	bool compare = false;
+	Predicate cmp_func = LEQUAL;
+	mutable int dirty_params = 0;
 
-public:
-	Sampler();
-	Sampler(const Texture &);
-private:
-	void init();
-
-	void update_parameter(int) const;
-	void set_parameter_i(unsigned, int) const;
-	void set_parameter_f(unsigned, float) const;
-	void set_parameter_fv(unsigned, const float *) const;
+	void update() const;
 
 public:
 	void set_min_filter(TextureFilter);
@@ -158,16 +147,9 @@ public:
 	bool is_compare_enabled() const { return compare; }
 	Predicate get_compare_function() const { return cmp_func; }
 
-	void bind() const { bind_to(0); }
-	void bind_to(unsigned) const;
-
-	static const Sampler *current(unsigned = 0);
-	static void unbind() { unbind_from(0); }
-	static void unbind_from(unsigned);
-
-	void unload();
+	void refresh() const { if(dirty_params) update(); }
 
-	void set_debug_name(const std::string &);
+	using SamplerBackend::set_debug_name;
 };