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Simplify matrix_4x4_identity

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This commit is contained in:
twinaphex 2017-04-16 03:34:33 +02:00
parent bd63327c3d
commit 793930b352
1 changed files with 4 additions and 5 deletions
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9
libretro-common/include/gfx/math/matrix_4x4.h
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@ -47,26 +47,25 @@ typedef struct math_matrix_4x4
*/ */
static INLINE void matrix_4x4_identity(math_matrix_4x4 *mat) static INLINE void matrix_4x4_identity(math_matrix_4x4 *mat)
{ {
unsigned i; MAT_ELEM_4X4(*mat, 0, 0) = 1.0f;
MAT_ELEM_4X4(*mat, 0, 1) = 0.0f; MAT_ELEM_4X4(*mat, 0, 1) = 0.0f;
MAT_ELEM_4X4(*mat, 0, 2) = 0.0f; MAT_ELEM_4X4(*mat, 0, 2) = 0.0f;
MAT_ELEM_4X4(*mat, 0, 3) = 0.0f; MAT_ELEM_4X4(*mat, 0, 3) = 0.0f;
MAT_ELEM_4X4(*mat, 1, 0) = 0.0f; MAT_ELEM_4X4(*mat, 1, 0) = 0.0f;
MAT_ELEM_4X4(*mat, 1, 1) = 1.0f;
MAT_ELEM_4X4(*mat, 1, 2) = 0.0f; MAT_ELEM_4X4(*mat, 1, 2) = 0.0f;
MAT_ELEM_4X4(*mat, 1, 3) = 0.0f; MAT_ELEM_4X4(*mat, 1, 3) = 0.0f;
MAT_ELEM_4X4(*mat, 2, 0) = 0.0f; MAT_ELEM_4X4(*mat, 2, 0) = 0.0f;
MAT_ELEM_4X4(*mat, 2, 1) = 0.0f; MAT_ELEM_4X4(*mat, 2, 1) = 0.0f;
MAT_ELEM_4X4(*mat, 2, 2) = 1.0f;
MAT_ELEM_4X4(*mat, 2, 3) = 0.0f; MAT_ELEM_4X4(*mat, 2, 3) = 0.0f;
MAT_ELEM_4X4(*mat, 3, 0) = 0.0f; MAT_ELEM_4X4(*mat, 3, 0) = 0.0f;
MAT_ELEM_4X4(*mat, 3, 1) = 0.0f; MAT_ELEM_4X4(*mat, 3, 1) = 0.0f;
MAT_ELEM_4X4(*mat, 3, 2) = 0.0f; MAT_ELEM_4X4(*mat, 3, 2) = 0.0f;
MAT_ELEM_4X4(*mat, 3, 3) = 1.0f;
for (i = 0; i < 4; i++)
MAT_ELEM_4X4(*mat, i, i) = 1.0f;
} }
void matrix_4x4_copy(math_matrix_4x4 *dst, const math_matrix_4x4 *src); void matrix_4x4_copy(math_matrix_4x4 *dst, const math_matrix_4x4 *src);