Test/hlsl.matpack-pragma-global.frag - third_party/glslang - Git at Google

 #pragma pack_matrix(row_major)

 float4x4 g_GlobalMat1;

 float4 main() : SV_Target0
 {
     return g_GlobalMat1[0];
 }
	#pragma pack_matrix(row_major)

	float4x4 g_GlobalMat1;

	float4 main() : SV_Target0
	{
	return g_GlobalMat1[0];
	}