1 files changed, 51 insertions, 0 deletions
diff --git a/3rdparty/glm/source/test/gtc/gtc_matrix_inverse.cpp b/3rdparty/glm/source/test/gtc/gtc_matrix_inverse.cpp
new file mode 100644
index 0000000..eaec6e1
--- /dev/null
+++ b/3rdparty/glm/source/test/gtc/gtc_matrix_inverse.cpp
@@ -0,0 +1,51 @@
+#include <glm/gtc/matrix_inverse.hpp>
+#include <glm/gtc/epsilon.hpp>
+
+int test_affine()
+{
+	int Error = 0;
+
+	{
+		glm::mat3 const M(
+			2.f, 0.f, 0.f,
+			0.f, 2.f, 0.f,
+			0.f, 0.f, 1.f);
+		glm::mat3 const A = glm::affineInverse(M);
+		glm::mat3 const I = glm::inverse(M);
+		glm::mat3 const R = glm::affineInverse(A);
+
+		for(glm::length_t i = 0; i < A.length(); ++i)
+		{
+			Error += glm::all(glm::epsilonEqual(M[i], R[i], 0.01f)) ? 0 : 1;
+			Error += glm::all(glm::epsilonEqual(A[i], I[i], 0.01f)) ? 0 : 1;
+		}
+	}
+
+	{
+		glm::mat4 const M(
+			2.f, 0.f, 0.f, 0.f,
+			0.f, 2.f, 0.f, 0.f,
+			0.f, 0.f, 2.f, 0.f,
+			0.f, 0.f, 0.f, 1.f);
+		glm::mat4 const A = glm::affineInverse(M);
+		glm::mat4 const I = glm::inverse(M);
+		glm::mat4 const R = glm::affineInverse(A);
+
+		for(glm::length_t i = 0; i < A.length(); ++i)
+		{
+			Error += glm::all(glm::epsilonEqual(M[i], R[i], 0.01f)) ? 0 : 1;
+			Error += glm::all(glm::epsilonEqual(A[i], I[i], 0.01f)) ? 0 : 1;
+		}
+	}
+
+	return Error;
+}
+
+int main()
+{
+	int Error = 0;
+
+	Error += test_affine();
+
+	return Error;
+}