From 21c1fa14a77ed11591726d8fa4a26915ffcc773a Mon Sep 17 00:00:00 2001
From: Christophe Riccio <g.truc.creation@gmail.com>
Date: Fri, 14 Jan 2011 19:35:39 +0000
Subject: [PATCH] Updated GLM_GTC_swizzle extension + tests

---
 glm/gtc/swizzle.hpp      |  7 +++-
 glm/gtc/swizzle.inl      | 88 ++++++++++++++++++++++++++++++++++++++--
 test/gtc/CMakeLists.txt  |  1 +
 test/gtc/gtc-swizzle.cpp | 46 +++++++++++++++++++++
 4 files changed, 138 insertions(+), 4 deletions(-)
 create mode 100644 test/gtc/gtc-swizzle.cpp

diff --git a/glm/gtc/swizzle.hpp b/glm/gtc/swizzle.hpp
index e71210eb..7af4b4f6 100644
--- a/glm/gtc/swizzle.hpp
+++ b/glm/gtc/swizzle.hpp
@@ -42,10 +42,15 @@ namespace glm
 			comp x, comp y, comp z);
 
 		template <typename T>
-		inline detail::tref4<T> swizzle(
+		detail::tvec4<T> swizzle(
 			detail::tvec4<T> const & v,
 			comp x, comp y, comp z, comp w);
 
+		template <typename T>
+		detail::tref4<T> swizzle(
+			detail::tvec4<T> & v,
+			comp x, comp y, comp z, comp w);
+
 	}//namespace swizzle
 	}//namespace gtc
 }//namespace glm
diff --git a/glm/gtc/swizzle.inl b/glm/gtc/swizzle.inl
index b072df20..79519df1 100644
--- a/glm/gtc/swizzle.inl
+++ b/glm/gtc/swizzle.inl
@@ -1,6 +1,6 @@
 namespace glm{
 namespace gtc{
-namespace glm_gtc_swizzle
+namespace swizzle
 {
 	template <typename T>
 	inline T swizzle
@@ -38,15 +38,97 @@ namespace glm_gtc_swizzle
 	}
 
 	template <typename T>
-	inline detail::tref4<T> swizzle
+	inline detail::tvec4<T> swizzle
 	(
 		detail::tvec4<T> const & v,
 		comp x, comp y, comp z, comp w
 	)
+	{
+		return detail::tvec4<T>(v[x], v[y],	v[z], v[w]);
+	}
+
+	template <typename T>
+	inline detail::tref4<T> swizzle
+	(
+		detail::tvec4<T> & v,
+		comp x, comp y, comp z, comp w
+	)
 	{
 		return detail::tref4<T>(v[x], v[y],	v[z], v[w]);
 	}
 
-}//namespace glm_gtc_swizzle
+	template <comp X>
+	inline int swizzle
+	(
+		detail::tvec4<int> const & v
+	)
+	{
+		return v[X];
+	}
+
+	template <comp X>
+	inline float swizzle
+	(
+		detail::tvec4<float> const & v
+	)
+	{
+		return v[X];
+	}
+
+	template <comp X, comp Y>
+	inline detail::tvec2<int> swizzle
+	(
+		detail::tvec4<int> const & v
+	)
+	{
+		return detail::tvec2<int>(v[X], v[Y]);
+	}
+
+	template <comp X, comp Y>
+	inline detail::tvec2<float> swizzle
+	(
+		detail::tvec4<float> const & v
+	)
+	{
+		return detail::tvec2<float>(v[X], v[Y]);
+	}
+
+	template <comp X, comp Y, comp Z>
+	inline detail::tvec3<int> swizzle
+	(
+		detail::tvec4<int> const & v
+	)
+	{
+		return detail::tvec3<int>(v[X], v[Y], v[Z]);
+	}
+
+	template <comp X, comp Y, comp Z>
+	inline detail::tvec3<float> swizzle
+	(
+		detail::tvec4<float> const & v
+	)
+	{
+		return detail::tvec3<float>(v[X], v[Y],	v[Z]);
+	}
+
+	template <comp X, comp Y, comp Z, comp W>
+	inline detail::tvec4<int> swizzle
+	(
+		detail::tvec4<int> const & v
+	)
+	{
+		return detail::tvec4<int>(v[X], v[Y], v[Z], v[W]);
+	}
+
+	template <comp X, comp Y, comp Z, comp W>
+	inline detail::tvec4<float> swizzle
+	(
+		detail::tvec4<float> const & v
+	)
+	{
+		return detail::tvec4<float>(v[X], v[Y],	v[Z], v[W]);
+	}
+
+}//namespace swizzle
 }//namespace gtc
 }//namespace glm
diff --git a/test/gtc/CMakeLists.txt b/test/gtc/CMakeLists.txt
index e69de29b..3cbcd7fa 100644
--- a/test/gtc/CMakeLists.txt
+++ b/test/gtc/CMakeLists.txt
@@ -0,0 +1 @@
+glmCreateTestGTC(gtc-swizzle)
\ No newline at end of file
diff --git a/test/gtc/gtc-swizzle.cpp b/test/gtc/gtc-swizzle.cpp
new file mode 100644
index 00000000..c2d51d99
--- /dev/null
+++ b/test/gtc/gtc-swizzle.cpp
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2010 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2010-09-16
+// Updated : 2010-09-16
+// Licence : This source is under MIT licence
+// File    : test/gtx/simd-mat4.cpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#define GLM_INSTRUCTION_SET GLM_PLATFORM_SSE3 | GLM_PLATFORM_SSE2
+#include <glm/glm.hpp>
+#include <glm/gtc/swizzle.hpp>
+
+int test_swizzle_vec4_dynamic()
+{
+	glm::ivec4 A(0, 1, 2, 3);
+	glm::ivec4 B = glm::swizzle(A, glm::B, glm::G, glm::R, glm::A);
+	glm::ivec3 C = glm::swizzle(A, glm::W, glm::Y, glm::Z);
+	glm::ivec2 D = glm::swizzle(A, glm::W, glm::X);
+	assert(D.x == A.w && D.y == A.x);
+	int E = glm::swizzle(A, glm::Q);
+	assert(E == A.q);
+
+	return 0;
+}
+
+int test_swizzle_vec4_static()
+{
+	glm::ivec4 A(0, 1, 2, 3);
+	glm::ivec4 B = glm::swizzle<glm::B, glm::G, glm::R, glm::A>(A);
+	glm::ivec3 C = glm::swizzle<glm::W, glm::Y, glm::Z>(A);
+	glm::ivec2 D = glm::swizzle<glm::W, glm::X>(A);
+	int E = glm::swizzle<glm::Q>(A);
+	assert(E == A.q);
+
+	return 0;
+}
+
+int main(int argc, void* argv[])
+{
+	int Failed = 0;
+	Failed += test_swizzle_vec4_dynamic();
+	Failed += test_swizzle_vec4_static();
+
+	return Failed;
+}