Updated GLI version used in GLM tests

test/external/gli/texture_cube.hpp

@@ -0,0 +1,68 @@
+/// @brief Include to use cube map textures.
+/// @file gli/texture_cube.hpp
+
+#pragma once
+
+#include "texture2d.hpp"
+
+namespace gli
+{
+	/// Cube map texture
+	class texture_cube : public texture
+	{
+	public:
+		typedef extent2d extent_type;
+
+	public:
+		/// Create an empty texture cube
+		texture_cube();
+
+		/// Create a texture_cube and allocate a new storage_linear
+		texture_cube(
+			format_type Format,
+			extent_type const & Extent,
+			size_type Levels,
+			swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));
+
+		/// Create a texture_cube and allocate a new storage_linear with a complete mipmap chain
+		texture_cube(
+			format_type Format,
+			extent_type const & Extent,
+			swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));
+
+		/// Create a texture_cube view with an existing storage_linear
+		explicit texture_cube(
+			texture const& Texture);
+
+		/// Create a texture_cube view with an existing storage_linear
+		texture_cube(
+			texture const& Texture,
+			format_type Format,
+			size_type BaseLayer, size_type MaxLayer,
+			size_type BaseFace, size_type MaxFace,
+			size_type BaseLevel, size_type MaxLevel,
+			swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));
+
+		/// Create a texture_cube view, reference a subset of an existing texture_cube instance
+		texture_cube(
+			texture_cube const& Texture,
+			size_type BaseFace, size_type MaxFace,
+			size_type BaseLevel, size_type MaxLevel);
+
+		/// Create a view of the texture identified by Face in the texture cube
+		texture2d operator[](size_type Face) const;
+
+		/// Return the dimensions of a texture instance: width and height where both should be equal.
+		extent_type extent(size_type Level = 0) const;
+
+		/// Fetch a texel from a texture. The texture format must be uncompressed.
+		template <typename gen_type>
+		gen_type load(extent_type const& TexelCoord, size_type Face, size_type Level) const;
+
+		/// Write a texel to a texture. The texture format must be uncompressed.
+		template <typename gen_type>
+		void store(extent_type const& TexelCoord, size_type Face, size_type Level, gen_type const& Texel);
+	};
+}//namespace gli
+
+#include "./core/texture_cube.inl"