almost first rendering, fixing renderer issues

third_party/glm/gtx/mixed_product.hpp

@@ -0,0 +1,41 @@
+/// @ref gtx_mixed_product
+/// @file glm/gtx/mixed_product.hpp
+///
+/// @see core (dependence)
+///
+/// @defgroup gtx_mixed_product GLM_GTX_mixed_producte
+/// @ingroup gtx
+///
+/// Include <glm/gtx/mixed_product.hpp> to use the features of this extension.
+///
+/// Mixed product of 3 vectors.
+
+#pragma once
+
+// Dependency:
+#include "../glm.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	ifndef GLM_ENABLE_EXPERIMENTAL
+#		pragma message("GLM: GLM_GTX_mixed_product is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it.")
+#	else
+#		pragma message("GLM: GLM_GTX_mixed_product extension included")
+#	endif
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_mixed_product
+	/// @{
+
+	/// @brief Mixed product of 3 vectors (from GLM_GTX_mixed_product extension)
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T mixedProduct(
+		vec<3, T, Q> const& v1,
+		vec<3, T, Q> const& v2,
+		vec<3, T, Q> const& v3);
+
+	/// @}
+}// namespace glm
+
+#include "mixed_product.inl"