No more default initialization of vector, matrix and quaternion types

glm/detail/setup.hpp

@@ -692,14 +692,8 @@
 
 #if GLM_HAS_DEFAULTED_FUNCTIONS
 #	define GLM_DEFAULT = default
-#	ifdef GLM_FORCE_NO_CTOR_INIT
-#		define GLM_DEFAULT_CTOR = default
-#	else
-#		define GLM_DEFAULT_CTOR
-#	endif
 #else
 #	define GLM_DEFAULT
-#	define GLM_DEFAULT_CTOR
 #endif
 
 #if GLM_HAS_CONSTEXPR || GLM_HAS_CONSTEXPR_PARTIAL

glm/detail/type_mat2x2.hpp

@@ -34,7 +34,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<2, 2, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<2, 2, T, Q> const & m);

glm/detail/type_mat2x2.inl

@@ -7,15 +7,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<2, 2, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0);
-				this->value[1] = col_type(0, 1);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat2x3.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<2, 3, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<2, 3, T, Q> const & m);

glm/detail/type_mat2x3.inl

@@ -5,15 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
-		template<typename T, precision P> 
+		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<2, 3, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0);
-				this->value[1] = col_type(0, 1, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat2x4.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<2, 4, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<2, 4, T, Q> const & m);

glm/detail/type_mat2x4.inl

@@ -5,15 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<2, 4, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0, 0);
-				this->value[1] = col_type(0, 1, 0, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat3x2.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<3, 2, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<3, 2, T, Q> const & m);

glm/detail/type_mat3x2.inl

@@ -5,16 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P> 
 		GLM_FUNC_QUALIFIER mat<3, 2, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0);
-				this->value[1] = col_type(0, 1);
-				this->value[2] = col_type(0, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat3x3.hpp

@@ -34,7 +34,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<3, 3, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<3, 3, T, Q> const & m);

glm/detail/type_mat3x3.inl

@@ -7,16 +7,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<3, 3, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0);
-				this->value[1] = col_type(0, 1, 0);
-				this->value[2] = col_type(0, 0, 1);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat3x4.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<3, 4, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<3, 4, T, Q> const & m);

glm/detail/type_mat3x4.inl

@@ -5,16 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<3, 4, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0, 0);
-				this->value[1] = col_type(0, 1, 0, 0);
-				this->value[2] = col_type(0, 0, 1, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat4x2.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<4, 2, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<4, 2, T, Q> const & m);

glm/detail/type_mat4x2.inl

@@ -5,17 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P> 
 		GLM_FUNC_QUALIFIER mat<4, 2, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0);
-				this->value[1] = col_type(0, 1);
-				this->value[2] = col_type(0, 0);
-				this->value[3] = col_type(0, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat4x3.hpp

@@ -35,7 +35,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<4, 3, T, P> const & m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<4, 3, T, Q> const & m);

glm/detail/type_mat4x3.inl

@@ -5,17 +5,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<4, 3, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0);
-				this->value[1] = col_type(0, 1, 0);
-				this->value[2] = col_type(0, 0, 1);
-				this->value[3] = col_type(0, 0, 0);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_mat4x4.hpp

@@ -34,7 +34,7 @@ namespace glm
 
 		// -- Constructors --
 
-		GLM_FUNC_DECL mat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL mat() GLM_DEFAULT;
 		GLM_FUNC_DECL mat(mat<4, 4, T, P> const& m) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL mat(mat<4, 4, T, Q> const& m);

glm/detail/type_mat4x4.inl

@@ -7,17 +7,10 @@ namespace glm
 {
 	// -- Constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER mat<4, 4, T, P>::mat()
-		{
+		{}
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				this->value[0] = col_type(1, 0, 0, 0);
-				this->value[1] = col_type(0, 1, 0, 0);
-				this->value[2] = col_type(0, 0, 1, 0);
-				this->value[3] = col_type(0, 0, 0, 1);
-#			endif
-		}
 #	endif
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS

glm/detail/type_vec1.hpp

@@ -85,7 +85,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const& v) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, T, Q> const& v);

glm/detail/type_vec1.inl

@@ -5,12 +5,9 @@ namespace glm
 {
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec()
-#			ifndef GLM_FORCE_NO_CTOR_INIT
-				: x(0)
-#			endif
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 

glm/detail/type_vec2.hpp

@@ -86,7 +86,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const& v) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, T, Q> const& v);

glm/detail/type_vec2.inl

@@ -5,12 +5,9 @@ namespace glm
 {
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec()
-#			ifndef GLM_FORCE_NO_CTOR_INIT
-				: x(0), y(0)
-#			endif
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 

glm/detail/type_vec3.hpp

@@ -86,7 +86,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const & v) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<3, T, Q> const & v);

glm/detail/type_vec3.inl

@@ -5,12 +5,9 @@ namespace glm
 {
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec()
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				: x(0), y(0), z(0)
-#			endif
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 

glm/detail/type_vec4.hpp

@@ -89,7 +89,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD vec() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD vec(vec<4, T, P> const& v) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD vec(vec<4, T, Q> const& v);

glm/detail/type_vec4.inl

@@ -154,12 +154,9 @@ namespace detail
 
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD vec<4, T, P>::vec()
-#			ifndef GLM_FORCE_NO_CTOR_INIT
-				: x(0), y(0), z(0), w(0)
-#			endif
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 

glm/gtc/quaternion.hpp

@@ -77,7 +77,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR tquat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR tquat() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR tquat(tquat<T, P> const& q) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR tquat(tquat<T, Q> const& q);

glm/gtc/quaternion.inl

@@ -83,12 +83,9 @@ namespace detail
 
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR tquat<T, P>::tquat()
-#			ifndef GLM_FORCE_NO_CTOR_INIT
-				: x(0), y(0), z(0), w(1)
-#			endif
 		{}
 #	endif
 
@@ -294,19 +291,19 @@ namespace detail
 	// -- Binary operators --
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER tquat<T, P> operator+(tquat<T, P> const & q,	tquat<T, P> const & p)
+	GLM_FUNC_QUALIFIER tquat<T, P> operator+(tquat<T, P> const & q, tquat<T, P> const & p)
 	{
 		return tquat<T, P>(q) += p;
 	}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER tquat<T, P> operator*(tquat<T, P> const & q,	tquat<T, P> const & p)
+	GLM_FUNC_QUALIFIER tquat<T, P> operator*(tquat<T, P> const & q, tquat<T, P> const & p)
 	{
 		return tquat<T, P>(q) *= p;
 	}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER vec<3, T, P> operator*(tquat<T, P> const & q,	vec<3, T, P> const & v)
+	GLM_FUNC_QUALIFIER vec<3, T, P> operator*(tquat<T, P> const & q, vec<3, T, P> const & v)
 	{
 		vec<3, T, P> const QuatVector(q.x, q.y, q.z);
 		vec<3, T, P> const uv(glm::cross(QuatVector, v));

glm/gtx/dual_quaternion.hpp

@@ -56,7 +56,7 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR tdualquat() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR tdualquat() GLM_DEFAULT;
 		GLM_FUNC_DECL GLM_CONSTEXPR tdualquat(tdualquat<T, P> const & d) GLM_DEFAULT;
 		template<precision Q>
 		GLM_FUNC_DECL GLM_CONSTEXPR tdualquat(tdualquat<T, Q> const & d);

glm/gtx/dual_quaternion.inl

@@ -24,13 +24,9 @@ namespace glm
 
 	// -- Implicit basic constructors --
 
-#	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
+#	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
 		GLM_FUNC_QUALIFIER GLM_CONSTEXPR tdualquat<T, P>::tdualquat()
-#			ifndef GLM_FORCE_NO_CTOR_INIT 
-				: real(tquat<T, P>())
-				, dual(tquat<T, P>(0, 0, 0, 0))
-#			endif
 		{}
 #	endif
 

manual.md

@@ -22,9 +22,8 @@
 + [3.4. SIMD support](#section3_4)
 + [3.5. Force inline](#section3_5)
 + [3.6. Vector and matrix static size](#section3_6)
-+ [3.7. Disabling default constructor initialization](#section3_7)
++ [3.7. Requiring explicit conversions](#section3_7)
-+ [3.8. Requiring explicit conversions](#section3_8)
++ [3.8. Removing genType restriction](#section3_8)
-+ [3.9. Removing genType restriction](#section3_9)
 + [4. Stable extensions](#section4)
 + [4.1. GLM_GTC_bitfield](#section4_1)
 + [4.2. GLM_GTC_color_space](#section4_2)
@@ -469,49 +468,7 @@ void foo(vec4 const & v)
 }
 ```
 
-### <a name="section3_7"></a> 3.7. Disabling default constructor initialization
+### <a name="section3_7"></a> 3.7. Requiring explicit conversions
-
-By default and following GLSL specifications, vector and matrix default constructors initialize the components to zero. This is a reliable behavior but initialization has a cost and it’s not always necessary.
-This behavior can be disabled at compilation time by define GLM\_FORCE\_NO\_CTOR\_INIT before any inclusion of &lt;glm/glm.hpp&gt; or other GLM include.
-
-GLM default behavior:
-
-```cpp
-#include <glm/glm.hpp>
-
-void foo()
-{
-    glm::vec4 v; // v is (0.0f, 0.0f, 0.0f, 0.0f)
-    ...
-}
-```
-
-GLM behavior using GLM\_FORCE\_NO\_CTOR\_INIT:
-
-```cpp
-#define GLM_FORCE_NO_CTOR_INIT
-#include <glm/glm.hpp>
-
-void foo()
-{
-    glm::vec4 v; // v is filled with garbage
-    ...
-}
-```
-
-Alternatively, GLM allows to explicitly not initialize a variable:
-
-```cpp
-#include <glm/glm.hpp>
-
-void foo()
-{
-    glm::vec4 v(glm::uninitialize);
-    ...
-}
-```
-
-### <a name="section3_8"></a> 3.8. Require explicit conversions
 
 GLSL supports implicit conversions of vector and matrix types. For example, an ivec4 can be implicitly converted into vec4.
 
@@ -548,7 +505,7 @@ void foo()
 }
 ```
 
-### <a name="section3_9"></a> 3.9. Removing genType restriction
+### <a name="section3_8"></a> 3.8. Removing genType restriction
 
 By default GLM only supports basic types as genType for vector, matrix and quaternion types:
 

readme.md

@@ -64,6 +64,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 - Added quatLookAt to GTX_quaternion #659
 
 #### Improvements:
+- No more default initialization of vector, matrix and quaternion types
 - Added lowp variant of GTC_color_space convertLinearToSRGB #419
 - Replaced the manual by a markdown version #458
 - Optimized GTC_packing implementation