re-organise files, remove cglm prefix from file to make them more clean

include/cglm/simd/sse2/mat3.h

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef cglm_mat3_sse_h
+#define cglm_mat3_sse_h
+#if defined( __SSE__ ) || defined( __SSE2__ )
+
+#include "../../common.h"
+#include "../intrin.h"
+
+CGLM_INLINE
+void
+glm_mat3_mul_sse2(mat3 m1, mat3 m2, mat3 dest) {
+  __m128 l0, l1, l2;
+  __m128 r0, r1, r2;
+  __m128 x0, x1, x2;
+
+  l0 = _mm_loadu_ps(m1[0]);
+  l1 = _mm_loadu_ps(&m1[1][1]);
+  l2 = _mm_set1_ps(m1[2][2]);
+
+  r0 = _mm_loadu_ps(m2[0]);
+  r1 = _mm_loadu_ps(&m2[1][1]);
+  r2 = _mm_set1_ps(m2[2][2]);
+
+  x1 = _mm_shuffle2_ps(l0, l1, 1, 0, 3, 3, 0, 3, 2, 0);
+  x2 = _mm_shuffle2_ps(l1, l2, 0, 0, 3, 2, 0, 2, 1, 0);
+
+  x0 = _mm_add_ps(_mm_mul_ps(_mm_shuffle1_ps(l0, 0, 2, 1, 0),
+                             _mm_shuffle1_ps(r0, 3, 0, 0, 0)),
+                  _mm_mul_ps(x1,
+                             _mm_shuffle2_ps(r0, r1, 0, 0, 1, 1, 2, 0, 0, 0)));
+
+  x0 = _mm_add_ps(x0,
+                  _mm_mul_ps(x2,
+                             _mm_shuffle2_ps(r0, r1, 1, 1, 2, 2, 2, 0, 0, 0)));
+
+  _mm_storeu_ps(dest[0], x0);
+
+  x0 = _mm_add_ps(_mm_mul_ps(_mm_shuffle1_ps(l0, 1, 0, 2, 1),
+                             _mm_shuffle_ps(r0, r1, _MM_SHUFFLE(2, 2, 3, 3))),
+                  _mm_mul_ps(_mm_shuffle1_ps(x1, 1, 0, 2, 1),
+                             _mm_shuffle1_ps(r1, 3, 3, 0, 0)));
+
+  x0 = _mm_add_ps(x0,
+                  _mm_mul_ps(_mm_shuffle1_ps(x2, 1, 0, 2, 1),
+                             _mm_shuffle_ps(r1, r2, _MM_SHUFFLE(0, 0, 1, 1))));
+
+  _mm_storeu_ps(&dest[1][1], x0);
+
+  dest[2][2] = m1[0][2] * m2[2][0]
+             + m1[1][2] * m2[2][1]
+             + m1[2][2] * m2[2][2];
+}
+
+#endif
+#endif /* cglm_mat3_sse_h */