From c473f9193d3e5088772b6e5ebf53b710e2976a92 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 15 Sep 2010 19:06:58 +0000
Subject: [PATCH] Remove non-OO access to blending Make Bind constructible from
 a reference again Use RAII binding for texture in Font

---
 source/bindable.h | 10 ++++++++++
 source/blend.cpp  | 22 +++++-----------------
 source/blend.h    | 11 ++---------
 source/font.cpp   |  3 ++-
 4 files changed, 19 insertions(+), 27 deletions(-)

diff --git a/source/bindable.h b/source/bindable.h
index d85ec78d..00023451 100644
--- a/source/bindable.h
+++ b/source/bindable.h
@@ -98,11 +98,21 @@ private:
 	Base *binder;
 
 public:
+	template<typename T>
+	Bind(const T &o, bool r = false):
+		binder(r ? create(&o, T::current()) : create(&o))
+	{ }
+
 	template<typename T>
 	Bind(const T *o, bool r = false):
 		binder(r ? create(o, T::current()) : create(o))
 	{ }
 
+	template<typename T>
+	Bind(T *o, bool r = false):
+		binder(r ? create(o, T::current()) : create(o))
+	{ }
+
 private:
 	Bind(const Bind &);
 	Bind &operator=(const Bind &);
diff --git a/source/blend.cpp b/source/blend.cpp
index 8b82772f..b2f59e17 100644
--- a/source/blend.cpp
+++ b/source/blend.cpp
@@ -38,34 +38,22 @@ void Blend::bind() const
 	if(set_current(this))
 	{
 		glEnable(GL_BLEND);
-		// XXX Don't try to set equation if version < 1.2
-		glBlendEquation(eq);
+		if(glBlendEquation)
+			glBlendEquation(eq);
 		glBlendFunc(src_factor, dst_factor);
 	}
 }
 
-const Blend &Blend::alpha()
-{
-	static Blend blend(SRC_ALPHA, ONE_MINUS_SRC_ALPHA);
-	return blend;
-}
-
 void Blend::unbind()
 {
 	if(set_current(0))
 		glDisable(GL_BLEND);
 }
 
-
-void blend_equation(BlendEquation eq)
-{
-	static RequireVersion _ver(1, 2);
-	glBlendEquation(eq);
-}
-
-void blend_func(BlendFactor src, BlendFactor dst)
+const Blend &Blend::alpha()
 {
-	glBlendFunc(src, dst);
+	static Blend blend(SRC_ALPHA, ONE_MINUS_SRC_ALPHA);
+	return blend;
 }
 
 } // namespace GL
diff --git a/source/blend.h b/source/blend.h
index c4c78d7d..3d7368bb 100644
--- a/source/blend.h
+++ b/source/blend.h
@@ -14,11 +14,6 @@ Distributed under the LGPL
 namespace Msp {
 namespace GL {
 
-enum
-{
-	BLEND = GL_BLEND
-};
-
 enum BlendEquation
 {
 	ADD              = GL_FUNC_ADD,
@@ -63,12 +58,10 @@ public:
 
 	void bind() const;
 
-	static const Blend &alpha();
 	static void unbind();
-};
 
-void blend_equation(BlendEquation eq);
-void blend_func(BlendFactor src, BlendFactor dst);
+	static const Blend &alpha();
+};
 
 } // namespace GL
 } // namespace Msp
diff --git a/source/font.cpp b/source/font.cpp
index 44e3d241..bbbc40ed 100644
--- a/source/font.cpp
+++ b/source/font.cpp
@@ -6,6 +6,7 @@ Distributed under the LGPL
 */
 
 #include <msp/datafile/collection.h>
+#include "bindable.h"
 #include "gl.h"
 #include "font.h"
 #include "immediate.h"
@@ -84,7 +85,7 @@ void Font::draw_string(const string &str, Codecs::Decoder &dec, PrimitiveBuilder
 	if(!tex)
 		throw InvalidState("No texture");
 
-	tex->bind();
+	Bind bind_tex(tex, true);
 
 	float x = 0;
 	unsigned count = 0;
-- 
2.43.0