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mat4x2: fix multiplication functions

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Signed-off-by: Vincent Davis Jr <vince@underview.tech>
This commit is contained in:
Vincent Davis Jr
2024-03-31 13:09:02 -04:00
parent 929963c6eb
commit 3445f93fbc
5 changed files with 40 additions and 56 deletions
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4
include/cglm/call/mat4x2.h
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@@ -27,11 +27,11 @@ glmc_mat4x2_make(const float * __restrict src, mat4x2 dest);
CGLM_EXPORT
void
glmc_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest);
glmc_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat2 dest);
CGLM_EXPORT
void
glmc_mat4x2_mulv(mat4x2 m, vec2 v, vec4 dest);
glmc_mat4x2_mulv(mat4x2 m, vec4 v, vec2 dest);
CGLM_EXPORT
void

44
include/cglm/mat4x2.h
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@@ -14,8 +14,8 @@
CGLM_INLINE void glm_mat4x2_copy(mat4x2 mat, mat4x2 dest);
CGLM_INLINE void glm_mat4x2_zero(mat4x2 mat);
CGLM_INLINE void glm_mat4x2_make(const float * __restrict src, mat4x2 dest);
CGLM_INLINE void glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest);
CGLM_INLINE void glm_mat4x2_mulv(mat4x2 m, vec2 v, vec4 dest);
CGLM_INLINE void glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat2 dest);
CGLM_INLINE void glm_mat4x2_mulv(mat4x2 m, vec4 v, vec2 dest);
CGLM_INLINE void glm_mat4x2_transpose(mat4x2 m, mat2x4 dest);
CGLM_INLINE void glm_mat4x2_scale(mat4x2 m, float s);
*/
@@ -90,16 +90,16 @@ glm_mat4x2_make(const float * __restrict src, mat4x2 dest) {
* @brief multiply m1 and m2 to dest
*
* @code
* glm_mat4x2_mul(mat4x2, mat2x4, mat4);
* glm_mat4x2_mul(mat4x2, mat2x4, mat2);
* @endcode
*
* @param[in] m1 left matrix (mat4x2)
* @param[in] m2 right matrix (mat2x4)
* @param[out] dest destination matrix (mat4)
* @param[out] dest destination matrix (mat2)
*/
CGLM_INLINE
void
glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest) {
glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat2 dest) {
float a00 = m1[0][0], a01 = m1[0][1],
a10 = m1[1][0], a11 = m1[1][1],
a20 = m1[2][0], a21 = m1[2][1],
@@ -108,29 +108,15 @@ glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest) {
b00 = m2[0][0], b01 = m2[0][1], b02 = m2[0][2], b03 = m2[0][3],
b10 = m2[1][0], b11 = m2[1][1], b12 = m2[1][2], b13 = m2[1][3];
dest[0][0] = a00 * b00 + a01 * b10;
dest[0][1] = a00 * b01 + a01 * b11;
dest[0][2] = a00 * b02 + a01 * b12;
dest[0][3] = a00 * b03 + a01 * b13;
dest[0][0] = a00 * b00 + a10 * b01 + a20 * b02 + a30 * b03;
dest[0][1] = a01 * b00 + a11 * b01 + a21 * b02 + a31 * b03;
dest[1][0] = a10 * b00 + a11 * b10;
dest[1][1] = a10 * b01 + a11 * b11;
dest[1][2] = a10 * b02 + a11 * b12;
dest[1][3] = a10 * b03 + a11 * b13;
dest[2][0] = a20 * b00 + a21 * b10;
dest[2][1] = a20 * b01 + a21 * b11;
dest[2][2] = a20 * b02 + a21 * b12;
dest[2][3] = a20 * b03 + a21 * b13;
dest[3][0] = a30 * b00 + a31 * b10;
dest[3][1] = a30 * b01 + a31 * b11;
dest[3][2] = a30 * b02 + a31 * b12;
dest[3][3] = a30 * b03 + a31 * b13;
dest[1][0] = a00 * b10 + a10 * b11 + a20 * b12 + a30 * b13;
dest[1][1] = a01 * b10 + a11 * b11 + a21 * b12 + a31 * b13;
}
/*!
* @brief multiply matrix with column vector and store in dest vector
* @brief multiply matrix with column vector and store in dest column vector
*
* @param[in] m matrix (left)
* @param[in] v vector (right, column vector)
@@ -138,13 +124,11 @@ glm_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest) {
*/
CGLM_INLINE
void
glm_mat4x2_mulv(mat4x2 m, vec2 v, vec4 dest) {
float v0 = v[0], v1 = v[1];
glm_mat4x2_mulv(mat4x2 m, vec4 v, vec2 dest) {
float v0 = v[0], v1 = v[1], v2 = v[2], v3 = v[3];
dest[0] = m[0][0] * v0 + m[0][1] * v1;
dest[1] = m[1][0] * v0 + m[1][1] * v1;
dest[2] = m[2][0] * v0 + m[2][1] * v1;
dest[3] = m[3][0] * v0 + m[3][1] * v1;
dest[0] = m[0][0] * v0 + m[1][0] * v1 + m[2][0] * v2 + m[3][0] * v3;
dest[1] = m[0][1] * v0 + m[1][1] * v1 + m[2][1] * v2 + m[3][1] * v3;
}
/*!

20
include/cglm/struct/mat4x2.h
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@@ -13,8 +13,8 @@
Functions:
CGLM_INLINE mat4x2s glms_mat4x2_zero(void);
CGLM_INLINE mat4x2s glms_mat4x2_make(const float * __restrict src);
CGLM_INLINE mat4s glms_mat4x2_mul(mat4x2s m1, mat2x4s m2);
CGLM_INLINE vec4s glms_mat4x2_mulv(mat4x2s m, vec2s v);
CGLM_INLINE mat2s glms_mat4x2_mul(mat4x2s m1, mat2x4s m2);
CGLM_INLINE vec2s glms_mat4x2_mulv(mat4x2s m, vec4s v);
CGLM_INLINE mat2x4s glms_mat4x2_transpose(mat4x2s m);
CGLM_INLINE mat4x2s glms_mat4x2_scale(mat4x2s m, float s);
*/
@@ -71,27 +71,27 @@ glms_mat4x2_(make)(const float * __restrict src) {
*
* @param[in] m1 left matrix (mat4x2s)
* @param[in] m2 right matrix (mat2x4s)
* @returns destination matrix (mat4s)
* @returns destination matrix (mat2s)
*/
CGLM_INLINE
mat4s
mat2s
glms_mat4x2_(mul)(mat4x2s m1, mat2x4s m2) {
mat4s r;
mat2s r;
glm_mat4x2_mul(m1.raw, m2.raw, r.raw);
return r;
}
/*!
* @brief multiply matrix with column vector and store in dest vector
* @brief multiply matrix with column vector and store in dest column vector
*
* @param[in] m matrix (left)
* @param[in] v vector (right, column vector)
* @param[out] dest result vector
* @returns destination vector (vec2s)
*/
CGLM_INLINE
vec4s
glms_mat4x2_(mulv)(mat4x2s m, vec2s v) {
vec4s r;
vec2s
glms_mat4x2_(mulv)(mat4x2s m, vec4s v) {
vec2s r;
glm_mat4x2_mulv(m.raw, v.raw, r.raw);
return r;
}

4
src/mat4x2.c
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@@ -28,13 +28,13 @@ glmc_mat4x2_make(const float * __restrict src, mat4x2 dest) {
CGLM_EXPORT
void
glmc_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat4 dest) {
glmc_mat4x2_mul(mat4x2 m1, mat2x4 m2, mat2 dest) {
glm_mat4x2_mul(m1, m2, dest);
}
CGLM_EXPORT
void
glmc_mat4x2_mulv(mat4x2 m, vec2 v, vec4 dest) {
glmc_mat4x2_mulv(mat4x2 m, vec4 v, vec2 dest) {
glm_mat4x2_mulv(m, v, dest);
}

24
test/src/test_mat4x2.h
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@@ -87,40 +87,40 @@ TEST_IMPL(GLM_PREFIX, mat4x2_mul) {
mat4x2 m1 = GLM_MAT4X2_ZERO_INIT;
mat2x4 m2 = GLM_MAT2X4_ZERO_INIT;
mat4 m3 = GLM_MAT4_ZERO_INIT;
mat4 m4 = GLM_MAT4_ZERO_INIT;
mat2 m3 = GLM_MAT2_ZERO_INIT;
mat2 m4 = GLM_MAT2_ZERO_INIT;
int i, j, k;
int c, r, k;
test_rand_mat4x2(m1);
test_rand_mat2x4(m2);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
for (k = 0; k < 2; k++) {
m4[i][j] += m1[i][k] * m2[k][j];
for (r = 0; r < 2; r++) {
for (c = 0; c < 2; c++) {
for (k = 0; k < 4; k++) {
m4[c][r] += m1[k][r] * m2[c][k];
}
}
}
GLM(mat4x2_mul)(m1, m2, m3);
ASSERTIFY(test_assert_mat4_eq(m3, m4))
ASSERTIFY(test_assert_mat2_eq(m3, m4))
TEST_SUCCESS
}
TEST_IMPL(GLM_PREFIX, mat4x2_mulv) {
mat4x2 mat = A_MATRIX4X2;
vec2 v = {11.0f, 21.0f};
vec4 v = {11.0f, 21.0f, 31.0f, 41.0f};
int i;
vec4 dest;
vec2 dest;
float res = 0.0;
GLM(mat4x2_mulv)(mat, v, dest);
for (i = 0; i < 4; i++) {
res = mat[i][0] * v[0] + mat[i][1] * v[1];
for (i = 0; i < 2; i++) {
res = mat[0][i] * v[0] + mat[1][i] * v[1] + mat[2][i] * v[2] + mat[3][i] * v[3];
ASSERT(test_eq(dest[i], res))
}