--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/simd.h	Mon May 05 15:31:14 2008 +0200
@@ -0,0 +1,82 @@
+/*
+ * simd.h: abstraction of Intel SSE instruction set
+ *
+ * This file is part of Pyrit Ray Tracer.
+ *
+ * Copyright 2008  Radek Brich
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef SIMD_H
+#define SIMD_H
+
+#include "common.h"
+
+#ifndef NO_SIMD
+
+#include <xmmintrin.h>
+
+typedef __m128 mfloat4;
+
+#define mZero  _mm_set_ps1(0.0f)
+#define mOne   _mm_set_ps1(1.0f)
+#define mTwo   _mm_set_ps1(2.0f)
+#define mEps   _mm_set_ps1(Eps)
+#define mMEps  _mm_set_ps1(-Eps)
+#define mInf   _mm_set_ps1(Inf)
+#define mMInf  _mm_set_ps1(-Inf)
+#define mAllSet  _mm_cmplt_ps(mZero, mOne)
+
+#define mset1 _mm_set_ps1
+#define mset _mm_set_ps
+
+#define madd _mm_add_ps
+#define msub _mm_sub_ps
+#define mmul _mm_mul_ps
+#define mdiv _mm_div_ps
+#define msqrt _mm_sqrt_ps
+
+#define mand _mm_and_ps
+#define mor  _mm_or_ps
+#define mcmpgt _mm_cmpgt_ps
+#define mcmplt _mm_cmplt_ps
+#define mcmpge _mm_cmpge_ps
+#define mcmple _mm_cmple_ps
+#define mcmpeq _mm_cmpeq_ps
+#define mcmpneq _mm_cmpneq_ps
+#define mmin _mm_min_ps
+#define mmax _mm_max_ps
+#define mmovemask _mm_movemask_ps
+
+inline const mfloat4 mselect(const mfloat4& mask, const mfloat4& a, const mfloat4& b)
+{
+	return _mm_or_ps(_mm_and_ps(mask, a), _mm_andnot_ps(mask, b));
+}
+
+inline const mfloat4 mfastpow(const mfloat4& base, const mfloat4& exponent)
+{
+    __m128 denom = _mm_mul_ps(exponent, base);
+    denom = _mm_sub_ps(exponent, denom);
+    denom = _mm_add_ps(base, denom);
+    return _mm_mul_ps(base, _mm_rcp_ps(denom));
+}
+#endif
+
+#endif