mengjunxu

mengjunxu / Quaternion.hlsl

Created November 30, 2022 02:14 — forked from mattatz/Quaternion.hlsl

Quaternion structure for HLSL

	#ifndef __QUATERNION_INCLUDED__
	#define __QUATERNION_INCLUDED__

	#define QUATERNION_IDENTITY float4(0, 0, 0, 1)

	#ifndef PI
	#define PI 3.14159265359f
	#endif

	// Quaternion multiplication

mengjunxu / Matrix.hlsl

Created November 30, 2022 02:14 — forked from mattatz/Matrix.hlsl

Matrix operations for HLSL

	#ifndef __MATRIX_INCLUDED__
	#define __MATRIX_INCLUDED__

	#define IDENTITY_MATRIX float4x4(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)

	float4x4 inverse(float4x4 m) {
	float n11 = m[0][0], n12 = m[1][0], n13 = m[2][0], n14 = m[3][0];
	float n21 = m[0][1], n22 = m[1][1], n23 = m[2][1], n24 = m[3][1];
	float n31 = m[0][2], n32 = m[1][2], n33 = m[2][2], n34 = m[3][2];
	float n41 = m[0][3], n42 = m[1][3], n43 = m[2][3], n44 = m[3][3];