Cycles: Split vectorized math utilities to a dedicated files

This file was even a bigger mess than vectorized types header,
cleaning it up to make it easier to maintain this files and
extend further.

intern/cycles/kernel/CMakeLists.txt

@@ -196,6 +196,12 @@ set(SRC_UTIL_HEADERS
 	../util/util_math.h
 	../util/util_math_fast.h
 	../util/util_math_intersect.h
+	../util/util_math_float2.h
+	../util/util_math_float3.h
+	../util/util_math_float4.h
+	../util/util_math_int2.h
+	../util/util_math_int3.h
+	../util/util_math_int4.h
 	../util/util_static_assert.h
 	../util/util_transform.h
 	../util/util_texture.h

intern/cycles/util/CMakeLists.txt

@@ -53,6 +53,12 @@ set(SRC_HEADERS
 	util_math_cdf.h
 	util_math_fast.h
 	util_math_intersect.h
+	util_math_float2.h
+	util_math_float3.h
+	util_math_float4.h
+	util_math_int2.h
+	util_math_int3.h
+	util_math_int4.h
 	util_md5.h
 	util_opengl.h
 	util_optimization.h

intern/cycles/util/util_math_float2.h

@@ -0,0 +1,227 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_FLOAT2_H__
+#define __UTIL_MATH_FLOAT2_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float2 operator-(const float2& a);
+ccl_device_inline float2 operator*(const float2& a, const float2& b);
+ccl_device_inline float2 operator*(const float2& a, float f);
+ccl_device_inline float2 operator*(float f, const float2& a);
+ccl_device_inline float2 operator/(float f, const float2& a);
+ccl_device_inline float2 operator/(const float2& a, float f);
+ccl_device_inline float2 operator/(const float2& a, const float2& b);
+ccl_device_inline float2 operator+(const float2& a, const float2& b);
+ccl_device_inline float2 operator-(const float2& a, const float2& b);
+ccl_device_inline float2 operator+=(float2& a, const float2& b);
+ccl_device_inline float2 operator*=(float2& a, const float2& b);
+ccl_device_inline float2 operator*=(float2& a, float f);
+ccl_device_inline float2 operator/=(float2& a, const float2& b);
+ccl_device_inline float2 operator/=(float2& a, float f);
+
+ccl_device_inline bool operator==(const float2& a, const float2& b);
+ccl_device_inline bool operator!=(const float2& a, const float2& b);
+
+ccl_device_inline bool is_zero(const float2& a);
+ccl_device_inline float average(const float2& a);
+ccl_device_inline float dot(const float2& a, const float2& b);
+ccl_device_inline float cross(const float2& a, const float2& b);
+ccl_device_inline float len(const float2& a);
+ccl_device_inline float2 normalize(const float2& a);
+ccl_device_inline float2 normalize_len(const float2& a, float *t);
+ccl_device_inline float2 safe_normalize(const float2& a);
+ccl_device_inline float2 min(const float2& a, const float2& b);
+ccl_device_inline float2 max(const float2& a, const float2& b);
+ccl_device_inline float2 clamp(const float2& a, const float2& mn, const float2& mx);
+ccl_device_inline float2 fabs(const float2& a);
+ccl_device_inline float2 as_float2(const float4& a);
+ccl_device_inline float2 interp(const float2& a, const float2& b, float t);
+#endif  /* !__KERNEL_OPENCL__ */
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float2 operator-(const float2& a)
+{
+	return make_float2(-a.x, -a.y);
+}
+
+ccl_device_inline float2 operator*(const float2& a, const float2& b)
+{
+	return make_float2(a.x*b.x, a.y*b.y);
+}
+
+ccl_device_inline float2 operator*(const float2& a, float f)
+{
+	return make_float2(a.x*f, a.y*f);
+}
+
+ccl_device_inline float2 operator*(float f, const float2& a)
+{
+	return make_float2(a.x*f, a.y*f);
+}
+
+ccl_device_inline float2 operator/(float f, const float2& a)
+{
+	return make_float2(f/a.x, f/a.y);
+}
+
+ccl_device_inline float2 operator/(const float2& a, float f)
+{
+	float invf = 1.0f/f;
+	return make_float2(a.x*invf, a.y*invf);
+}
+
+ccl_device_inline float2 operator/(const float2& a, const float2& b)
+{
+	return make_float2(a.x/b.x, a.y/b.y);
+}
+
+ccl_device_inline float2 operator+(const float2& a, const float2& b)
+{
+	return make_float2(a.x+b.x, a.y+b.y);
+}
+
+ccl_device_inline float2 operator-(const float2& a, const float2& b)
+{
+	return make_float2(a.x-b.x, a.y-b.y);
+}
+
+ccl_device_inline float2 operator+=(float2& a, const float2& b)
+{
+	return a = a + b;
+}
+
+ccl_device_inline float2 operator*=(float2& a, const float2& b)
+{
+	return a = a * b;
+}
+
+ccl_device_inline float2 operator*=(float2& a, float f)
+{
+	return a = a * f;
+}
+
+ccl_device_inline float2 operator/=(float2& a, const float2& b)
+{
+	return a = a / b;
+}
+
+ccl_device_inline float2 operator/=(float2& a, float f)
+{
+	float invf = 1.0f/f;
+	return a = a * invf;
+}
+
+ccl_device_inline bool operator==(const float2& a, const float2& b)
+{
+	return (a.x == b.x && a.y == b.y);
+}
+
+ccl_device_inline bool operator!=(const float2& a, const float2& b)
+{
+	return !(a == b);
+}
+
+ccl_device_inline bool is_zero(const float2& a)
+{
+	return (a.x == 0.0f && a.y == 0.0f);
+}
+
+ccl_device_inline float average(const float2& a)
+{
+	return (a.x + a.y)*(1.0f/2.0f);
+}
+
+ccl_device_inline float dot(const float2& a, const float2& b)
+{
+	return a.x*b.x + a.y*b.y;
+}
+
+ccl_device_inline float cross(const float2& a, const float2& b)
+{
+	return (a.x*b.y - a.y*b.x);
+}
+
+ccl_device_inline float len(const float2& a)
+{
+	return sqrtf(dot(a, a));
+}
+
+ccl_device_inline float2 normalize(const float2& a)
+{
+	return a/len(a);
+}
+
+ccl_device_inline float2 normalize_len(const float2& a, float *t)
+{
+	*t = len(a);
+	return a/(*t);
+}
+
+ccl_device_inline float2 safe_normalize(const float2& a)
+{
+	float t = len(a);
+	return (t != 0.0f)? a/t: a;
+}
+
+ccl_device_inline float2 min(const float2& a, const float2& b)
+{
+	return make_float2(min(a.x, b.x), min(a.y, b.y));
+}
+
+ccl_device_inline float2 max(const float2& a, const float2& b)
+{
+	return make_float2(max(a.x, b.x), max(a.y, b.y));
+}
+
+ccl_device_inline float2 clamp(const float2& a, const float2& mn, const float2& mx)
+{
+	return min(max(a, mn), mx);
+}
+
+ccl_device_inline float2 fabs(const float2& a)
+{
+	return make_float2(fabsf(a.x), fabsf(a.y));
+}
+
+ccl_device_inline float2 as_float2(const float4& a)
+{
+	return make_float2(a.x, a.y);
+}
+
+ccl_device_inline float2 interp(const float2& a, const float2& b, float t)
+{
+	return a + t*(b - a);
+}
+#endif  /* !__KERNEL_OPENCL__ */
+
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_FLOAT2_H__ */

intern/cycles/util/util_math_float3.h

@@ -0,0 +1,365 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_FLOAT3_H__
+#define __UTIL_MATH_FLOAT3_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float3 operator-(const float3& a);
+ccl_device_inline float3 operator*(const float3& a, const float3& b);
+ccl_device_inline float3 operator*(const float3& a, const float f);
+ccl_device_inline float3 operator*(const float f, const float3& a);
+ccl_device_inline float3 operator/(const float f, const float3& a);
+ccl_device_inline float3 operator/(const float3& a, const float f);
+ccl_device_inline float3 operator/(const float3& a, const float3& b);
+ccl_device_inline float3 operator+(const float3& a, const float3& b);
+ccl_device_inline float3 operator-(const float3& a, const float3& b);
+ccl_device_inline float3 operator+=(float3& a, const float3& b);
+ccl_device_inline float3 operator*=(float3& a, const float3& b);
+ccl_device_inline float3 operator*=(float3& a, float f);
+ccl_device_inline float3 operator/=(float3& a, const float3& b);
+ccl_device_inline float3 operator/=(float3& a, float f);
+
+ccl_device_inline bool operator==(const float3& a, const float3& b);
+ccl_device_inline bool operator!=(const float3& a, const float3& b);
+
+ccl_device_inline float dot(const float3& a, const float3& b);
+ccl_device_inline float dot_xy(const float3& a, const float3& b);
+ccl_device_inline float3 cross(const float3& a, const float3& b);
+ccl_device_inline float3 normalize(const float3& a);
+ccl_device_inline float3 min(const float3& a, const float3& b);
+ccl_device_inline float3 max(const float3& a, const float3& b);
+ccl_device_inline float3 clamp(const float3& a, const float3& mn, const float3& mx);
+ccl_device_inline float3 fabs(const float3& a);
+ccl_device_inline float3 mix(const float3& a, const float3& b, float t);
+ccl_device_inline float3 rcp(const float3& a);
+#endif  /* !__KERNEL_OPENCL__ */
+
+ccl_device_inline float max3(float3 a);
+ccl_device_inline float len(const float3 a);
+ccl_device_inline float len_squared(const float3 a);
+
+ccl_device_inline float3 saturate3(float3 a);
+ccl_device_inline float3 safe_normalize(const float3 a);
+ccl_device_inline float3 normalize_len(const float3 a, float *t);;
+ccl_device_inline float3 safe_normalize_len(const float3 a, float *t);
+ccl_device_inline float3 interp(float3 a, float3 b, float t);
+
+ccl_device_inline bool is_zero(const float3 a);
+ccl_device_inline float reduce_add(const float3 a);
+ccl_device_inline float average(const float3 a);
+ccl_device_inline bool isequal_float3(const float3 a, const float3 b);
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float3 operator-(const float3& a)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_xor_ps(a.m128, _mm_castsi128_ps(_mm_set1_epi32(0x80000000))));
+#else
+	return make_float3(-a.x, -a.y, -a.z);
+#endif
+}
+
+ccl_device_inline float3 operator*(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_mul_ps(a.m128,b.m128));
+#else
+	return make_float3(a.x*b.x, a.y*b.y, a.z*b.z);
+#endif
+}
+
+ccl_device_inline float3 operator*(const float3& a, const float f)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_mul_ps(a.m128,_mm_set1_ps(f)));
+#else
+	return make_float3(a.x*f, a.y*f, a.z*f);
+#endif
+}
+
+ccl_device_inline float3 operator*(const float f, const float3& a)
+{
+	/* TODO(sergey): Currently disabled, gives speedup but causes precision issues. */
+#if defined(__KERNEL_SSE__) && 0
+	return float3(_mm_mul_ps(_mm_set1_ps(f), a.m128));
+#else
+	return make_float3(a.x*f, a.y*f, a.z*f);
+#endif
+}
+
+ccl_device_inline float3 operator/(const float f, const float3& a)
+{
+	/* TODO(sergey): Currently disabled, gives speedup but causes precision issues. */
+#if defined(__KERNEL_SSE__) && 0
+	__m128 rc = _mm_rcp_ps(a.m128);
+	return float3(_mm_mul_ps(_mm_set1_ps(f),rc));
+#else
+	return make_float3(f / a.x, f / a.y, f / a.z);
+#endif
+}
+
+ccl_device_inline float3 operator/(const float3& a, const float f)
+{
+	float invf = 1.0f/f;
+	return a * invf;
+}
+
+ccl_device_inline float3 operator/(const float3& a, const float3& b)
+{
+	/* TODO(sergey): Currently disabled, gives speedup but causes precision issues. */
+#if defined(__KERNEL_SSE__) && 0
+	__m128 rc = _mm_rcp_ps(b.m128);
+	return float3(_mm_mul_ps(a, rc));
+#else
+	return make_float3(a.x / b.x, a.y / b.y, a.z / b.z);
+#endif
+}
+
+ccl_device_inline float3 operator+(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_add_ps(a.m128, b.m128));
+#else
+	return make_float3(a.x + b.x, a.y + b.y, a.z + b.z);
+#endif
+}
+
+ccl_device_inline float3 operator-(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_sub_ps(a.m128, b.m128));
+#else
+	return make_float3(a.x - b.x, a.y - b.y, a.z - b.z);
+#endif
+}
+
+ccl_device_inline float3 operator+=(float3& a, const float3& b)
+{
+	return a = a + b;
+}
+
+ccl_device_inline float3 operator*=(float3& a, const float3& b)
+{
+	return a = a * b;
+}
+
+ccl_device_inline float3 operator*=(float3& a, float f)
+{
+	return a = a * f;
+}
+
+ccl_device_inline float3 operator/=(float3& a, const float3& b)
+{
+	return a = a / b;
+}
+
+ccl_device_inline float3 operator/=(float3& a, float f)
+{
+	float invf = 1.0f/f;
+	return a = a * invf;
+}
+
+ccl_device_inline bool operator==(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return (_mm_movemask_ps(_mm_cmpeq_ps(a.m128, b.m128)) & 7) == 7;
+#else
+	return (a.x == b.x && a.y == b.y && a.z == b.z);
+#endif
+}
+
+ccl_device_inline bool operator!=(const float3& a, const float3& b)
+{
+	return !(a == b);
+}
+
+ccl_device_inline float dot(const float3& a, const float3& b)
+{
+#if defined(__KERNEL_SSE41__) && defined(__KERNEL_SSE__)
+	return _mm_cvtss_f32(_mm_dp_ps(a, b, 0x7F));
+#else
+	return a.x*b.x + a.y*b.y + a.z*b.z;
+#endif
+}
+
+ccl_device_inline float dot_xy(const float3& a, const float3& b)
+{
+#if defined(__KERNEL_SSE41__) && defined(__KERNEL_SSE__)
+	return _mm_cvtss_f32(_mm_hadd_ps(_mm_mul_ps(a,b),b));
+#else
+	return a.x*b.x + a.y*b.y;
+#endif
+}
+
+ccl_device_inline float3 cross(const float3& a, const float3& b)
+{
+	float3 r = make_float3(a.y*b.z - a.z*b.y, a.z*b.x - a.x*b.z, a.x*b.y - a.y*b.x);
+	return r;
+}
+
+ccl_device_inline float3 normalize(const float3& a)
+{
+#if defined(__KERNEL_SSE41__) && defined(__KERNEL_SSE__)
+	__m128 norm = _mm_sqrt_ps(_mm_dp_ps(a.m128, a.m128, 0x7F));
+	return float3(_mm_div_ps(a.m128, norm));
+#else
+	return a/len(a);
+#endif
+}
+
+ccl_device_inline float3 min(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_min_ps(a.m128, b.m128));
+#else
+	return make_float3(min(a.x, b.x), min(a.y, b.y), min(a.z, b.z));
+#endif
+}
+
+ccl_device_inline float3 max(const float3& a, const float3& b)
+{
+#ifdef __KERNEL_SSE__
+	return float3(_mm_max_ps(a.m128, b.m128));
+#else
+	return make_float3(max(a.x, b.x), max(a.y, b.y), max(a.z, b.z));
+#endif
+}
+
+ccl_device_inline float3 clamp(const float3& a, const float3& mn, const float3& mx)
+{
+	return min(max(a, mn), mx);
+}
+
+ccl_device_inline float3 fabs(const float3& a)
+{
+#ifdef __KERNEL_SSE__
+	__m128 mask = _mm_castsi128_ps(_mm_set1_epi32(0x7fffffff));
+	return float3(_mm_and_ps(a.m128, mask));
+#else
+	return make_float3(fabsf(a.x), fabsf(a.y), fabsf(a.z));
+#endif
+}
+
+ccl_device_inline float3 mix(const float3& a, const float3& b, float t)
+{
+	return a + t*(b - a);
+}
+
+ccl_device_inline float3 rcp(const float3& a)
+{
+#ifdef __KERNEL_SSE__
+	const float4 r(_mm_rcp_ps(a.m128));
+	return float3(_mm_sub_ps(_mm_add_ps(r, r),
+	                         _mm_mul_ps(_mm_mul_ps(r, r), a)));
+#else
+	return make_float3(1.0f/a.x, 1.0f/a.y, 1.0f/a.z);
+#endif
+}
+#endif  /* !__KERNEL_OPENCL__ */
+
+ccl_device_inline float max3(float3 a)
+{
+	return max(max(a.x, a.y), a.z);
+}
+
+ccl_device_inline float len(const float3 a)
+{
+#if defined(__KERNEL_SSE41__) && defined(__KERNEL_SSE__)
+	return _mm_cvtss_f32(_mm_sqrt_ss(_mm_dp_ps(a.m128, a.m128, 0x7F)));
+#else
+	return sqrtf(dot(a, a));
+#endif
+}
+
+ccl_device_inline float len_squared(const float3 a)
+{
+	return dot(a, a);
+}
+
+ccl_device_inline float3 saturate3(float3 a)
+{
+	return make_float3(saturate(a.x), saturate(a.y), saturate(a.z));
+}
+
+ccl_device_inline float3 normalize_len(const float3 a, float *t)
+{
+	*t = len(a);
+	float x = 1.0f / *t;
+	return a*x;
+}
+
+ccl_device_inline float3 safe_normalize(const float3 a)
+{
+	float t = len(a);
+	return (t != 0.0f)? a * (1.0f/t) : a;
+}
+
+ccl_device_inline float3 safe_normalize_len(const float3 a, float *t)
+{
+	*t = len(a);
+	return (*t != 0.0f)? a/(*t): a;
+}
+
+ccl_device_inline float3 interp(float3 a, float3 b, float t)
+{
+	return a + t*(b - a);
+}
+
+ccl_device_inline bool is_zero(const float3 a)
+{
+#ifdef __KERNEL_SSE__
+	return a == make_float3(0.0f);
+#else
+	return (a.x == 0.0f && a.y == 0.0f && a.z == 0.0f);
+#endif
+}
+
+ccl_device_inline float reduce_add(const float3 a)
+{
+	return (a.x + a.y + a.z);
+}
+
+ccl_device_inline float average(const float3 a)
+{
+	return reduce_add(a)*(1.0f/3.0f);
+}
+
+ccl_device_inline bool isequal_float3(const float3 a, const float3 b)
+{
+#ifdef __KERNEL_OPENCL__
+	return all(a == b);
+#else
+	return a == b;
+#endif
+}
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_FLOAT3_H__ */

intern/cycles/util/util_math_float4.h

@@ -0,0 +1,393 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_FLOAT4_H__
+#define __UTIL_MATH_FLOAT4_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float4 operator-(const float4& a);
+ccl_device_inline float4 operator*(const float4& a, const float4& b);
+ccl_device_inline float4 operator*(const float4& a, float f);
+ccl_device_inline float4 operator*(float f, const float4& a);
+ccl_device_inline float4 operator/(const float4& a, float f);
+ccl_device_inline float4 operator/(const float4& a, const float4& b);
+ccl_device_inline float4 operator+(const float4& a, const float4& b);
+ccl_device_inline float4 operator-(const float4& a, const float4& b);
+ccl_device_inline float4 operator+=(float4& a, const float4& b);
+ccl_device_inline float4 operator*=(float4& a, const float4& b);
+ccl_device_inline float4 operator/=(float4& a, float f);
+
+ccl_device_inline int4 operator<(const float4& a, const float4& b);
+ccl_device_inline int4 operator>=(const float4& a, const float4& b);
+ccl_device_inline int4 operator<=(const float4& a, const float4& b);
+ccl_device_inline bool operator==(const float4& a, const float4& b);
+
+ccl_device_inline float dot(const float4& a, const float4& b);
+ccl_device_inline float len_squared(const float4& a);
+ccl_device_inline float4 rcp(const float4& a);
+ccl_device_inline float4 cross(const float4& a, const float4& b);
+ccl_device_inline bool is_zero(const float4& a);
+ccl_device_inline float reduce_add(const float4& a);
+ccl_device_inline float average(const float4& a);
+ccl_device_inline float len(const float4& a);
+ccl_device_inline float4 normalize(const float4& a);
+ccl_device_inline float4 safe_normalize(const float4& a);
+ccl_device_inline float4 min(const float4& a, const float4& b);
+ccl_device_inline float4 max(const float4& a, const float4& b);
+#endif  /* !__KERNEL_OPENCL__*/
+
+#ifdef __KERNEL_SSE__
+template<size_t index_0, size_t index_1, size_t index_2, size_t index_3>
+__forceinline const float4 shuffle(const float4& b);
+
+template<> __forceinline const float4 shuffle<0, 1, 0, 1>(const float4& b);
+
+#  ifdef __KERNEL_SSE3__
+template<> __forceinline const float4 shuffle<0, 0, 2, 2>(const float4& b);
+template<> __forceinline const float4 shuffle<1, 1, 3, 3>(const float4& b);
+#  endif
+#endif  /* __KERNEL_SSE__ */
+
+#ifndef __KERNEL_GPU__
+ccl_device_inline float4 select(const int4& mask,
+                                const float4& a,
+                                const float4& b);
+ccl_device_inline float4 reduce_min(const float4& a);
+ccl_device_inline float4 reduce_max(const float4& a);
+#  if 0
+ccl_device_inline float4 reduce_add(const float4& a);
+#  endif
+#endif  /* !__KERNEL_GPU__ */
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline float4 operator-(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	__m128 mask = _mm_castsi128_ps(_mm_set1_epi32(0x80000000));
+	return float4(_mm_xor_ps(a.m128, mask));
+#else
+	return make_float4(-a.x, -a.y, -a.z, -a.w);
+#endif
+}
+
+ccl_device_inline float4 operator*(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return float4(_mm_mul_ps(a.m128, b.m128));
+#else
+	return make_float4(a.x*b.x, a.y*b.y, a.z*b.z, a.w*b.w);
+#endif
+}
+
+ccl_device_inline float4 operator*(const float4& a, float f)
+{
+#if defined(__KERNEL_SSE__)
+	return a * make_float4(f);
+#else
+	return make_float4(a.x*f, a.y*f, a.z*f, a.w*f);
+#endif
+}
+
+ccl_device_inline float4 operator*(float f, const float4& a)
+{
+	return a * f;
+}
+
+ccl_device_inline float4 operator/(const float4& a, float f)
+{
+	return a * (1.0f/f);
+}
+
+ccl_device_inline float4 operator/(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return a * rcp(b);
+#else
+	return make_float4(a.x/b.x, a.y/b.y, a.z/b.z, a.w/b.w);
+#endif
+
+}
+
+ccl_device_inline float4 operator+(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return float4(_mm_add_ps(a.m128, b.m128));
+#else
+	return make_float4(a.x+b.x, a.y+b.y, a.z+b.z, a.w+b.w);
+#endif
+}
+
+ccl_device_inline float4 operator-(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return float4(_mm_sub_ps(a.m128, b.m128));
+#else
+	return make_float4(a.x-b.x, a.y-b.y, a.z-b.z, a.w-b.w);
+#endif
+}
+
+ccl_device_inline float4 operator+=(float4& a, const float4& b)
+{
+	return a = a + b;
+}
+
+ccl_device_inline float4 operator*=(float4& a, const float4& b)
+{
+	return a = a * b;
+}
+
+ccl_device_inline float4 operator/=(float4& a, float f)
+{
+	return a = a / f;
+}
+
+ccl_device_inline int4 operator<(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	/* TODO(sergey): avoid cvt. */
+	return int4(_mm_cvtps_epi32(_mm_cmplt_ps(a.m128, b.m128)));
+#else
+	return make_int4(a.x < b.x, a.y < b.y, a.z < b.z, a.w < b.w);
+#endif
+}
+
+ccl_device_inline int4 operator>=(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	/* TODO(sergey): avoid cvt. */
+	return int4(_mm_cvtps_epi32(_mm_cmpge_ps(a.m128, b.m128)));
+#else
+	return make_int4(a.x >= b.x, a.y >= b.y, a.z >= b.z, a.w >= b.w);
+#endif
+}
+
+ccl_device_inline int4 operator<=(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	/* TODO(sergey): avoid cvt. */
+	return int4(_mm_cvtps_epi32(_mm_cmple_ps(a.m128, b.m128)));
+#else
+	return make_int4(a.x <= b.x, a.y <= b.y, a.z <= b.z, a.w <= b.w);
+#endif
+}
+
+ccl_device_inline bool operator==(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return (_mm_movemask_ps(_mm_cmpeq_ps(a.m128, b.m128)) & 15) == 15;
+#else
+	return (a.x == b.x && a.y == b.y && a.z == b.z && a.w == b.w);
+#endif
+}
+
+ccl_device_inline float dot(const float4& a, const float4& b)
+{
+#if defined(__KERNEL_SSE41__) && defined(__KERNEL_SSE__)
+	return _mm_cvtss_f32(_mm_dp_ps(a, b, 0xFF));
+#else
+	return (a.x*b.x + a.y*b.y) + (a.z*b.z + a.w*b.w);
+#endif
+}
+
+ccl_device_inline float len_squared(const float4& a)
+{
+	return dot(a, a);
+}
+
+ccl_device_inline float4 rcp(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	float4 r(_mm_rcp_ps(a.m128));
+	return float4(_mm_sub_ps(_mm_add_ps(r, r),
+	                         _mm_mul_ps(_mm_mul_ps(r, r), a)));
+#else
+	return make_float4(1.0f/a.x, 1.0f/a.y, 1.0f/a.z, 1.0f/a.w);
+#endif
+}
+
+ccl_device_inline float4 cross(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return (shuffle<1,2,0,0>(a)*shuffle<2,0,1,0>(b)) -
+	       (shuffle<2,0,1,0>(a)*shuffle<1,2,0,0>(b));
+#else
+	return make_float4(a.y*b.z - a.z*b.y,
+	                   a.z*b.x - a.x*b.z,
+	                   a.x*b.y - a.y*b.x,
+	                   0.0f);
+#endif
+}
+
+ccl_device_inline bool is_zero(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	return a == make_float4(0.0f);
+#else
+	return (a.x == 0.0f && a.y == 0.0f && a.z == 0.0f && a.w == 0.0f);
+#endif
+}
+
+ccl_device_inline float reduce_add(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	float4 h(shuffle<1,0,3,2>(a) + a);
+	/* TODO(sergey): Investigate efficiency. */
+	return _mm_cvtss_f32(shuffle<2,3,0,1>(h) + h);
+#else
+	return ((a.x + a.y) + (a.z + a.w));
+#endif
+}
+
+ccl_device_inline float average(const float4& a)
+{
+	return reduce_add(a) * 0.25f;
+}
+
+ccl_device_inline float len(const float4& a)
+{
+	return sqrtf(dot(a, a));
+}
+
+ccl_device_inline float4 normalize(const float4& a)
+{
+	return a/len(a);
+}
+
+ccl_device_inline float4 safe_normalize(const float4& a)
+{
+	float t = len(a);
+	return (t != 0.0f)? a/t: a;
+}
+
+ccl_device_inline float4 min(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return float4(_mm_min_ps(a.m128, b.m128));
+#else
+	return make_float4(min(a.x, b.x),
+	                   min(a.y, b.y),
+	                   min(a.z, b.z),
+	                   min(a.w, b.w));
+#endif
+}
+
+ccl_device_inline float4 max(const float4& a, const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	return float4(_mm_max_ps(a.m128, b.m128));
+#else
+	return make_float4(max(a.x, b.x),
+	                   max(a.y, b.y),
+	                   max(a.z, b.z),
+	                   max(a.w, b.w));
+#endif
+}
+#endif  /* !__KERNEL_OPENCL__*/
+
+#ifdef __KERNEL_SSE__
+template<size_t index_0, size_t index_1, size_t index_2, size_t index_3>
+__forceinline const float4 shuffle(const float4& b)
+{
+	return float4(_mm_castsi128_ps(
+	        _mm_shuffle_epi32(_mm_castps_si128(b),
+	                          _MM_SHUFFLE(index_3, index_2, index_1, index_0))));
+}
+
+template<> __forceinline const float4 shuffle<0, 1, 0, 1>(const float4& b)
+{
+	return float4(_mm_castpd_ps(_mm_movedup_pd(_mm_castps_pd(b))));
+}
+
+#  ifdef __KERNEL_SSE3__
+template<> __forceinline const float4 shuffle<0, 0, 2, 2>(const float4& b)
+{
+	return float4(_mm_moveldup_ps(b));
+}
+
+template<> __forceinline const float4 shuffle<1, 1, 3, 3>(const float4& b)
+{
+	return float4(_mm_movehdup_ps(b));
+}
+#  endif  /* __KERNEL_SSE3__ */
+#endif  /* __KERNEL_SSE__ */
+
+#ifndef __KERNEL_GPU__
+ccl_device_inline float4 select(const int4& mask,
+                                const float4& a,
+                                const float4& b)
+{
+#ifdef __KERNEL_SSE__
+	/* TODO(sergey): avoid cvt. */
+	return float4(_mm_or_ps(_mm_and_ps(_mm_cvtepi32_ps(mask), a),
+	                        _mm_andnot_ps(_mm_cvtepi32_ps(mask), b)));
+#else
+	return make_float4((mask.x)? a.x: b.x,
+	                   (mask.y)? a.y: b.y,
+	                   (mask.z)? a.z: b.z,
+	                   (mask.w)? a.w: b.w);
+#endif
+}
+
+ccl_device_inline float4 reduce_min(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	float4 h = min(shuffle<1,0,3,2>(a), a);
+	return min(shuffle<2,3,0,1>(h), h);
+#else
+	return make_float4(min(min(a.x, a.y), min(a.z, a.w)));
+#endif
+}
+
+ccl_device_inline float4 reduce_max(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	float4 h = max(shuffle<1,0,3,2>(a), a);
+	return max(shuffle<2,3,0,1>(h), h);
+#else
+	return make_float4(max(max(a.x, a.y), max(a.z, a.w)));
+#endif
+}
+
+#if 0
+ccl_device_inline float4 reduce_add(const float4& a)
+{
+#ifdef __KERNEL_SSE__
+	float4 h = shuffle<1,0,3,2>(a) + a;
+	return shuffle<2,3,0,1>(h) + h;
+#else
+	return make_float4((a.x + a.y) + (a.z + a.w));
+#endif
+}
+#endif
+#endif  /* !__KERNEL_GPU__ */
+
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_FLOAT4_H__ */

intern/cycles/util/util_math_int2.h

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_INT2_H__
+#define __UTIL_MATH_INT2_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline bool operator==(const int2 a, const int2 b);
+ccl_device_inline int2 operator+(const int2 &a, const int2 &b);
+ccl_device_inline int2 operator+=(int2 &a, const int2 &b);
+ccl_device_inline int2 operator-(const int2 &a, const int2 &b);
+ccl_device_inline int2 operator*(const int2 &a, const int2 &b);
+ccl_device_inline int2 operator/(const int2 &a, const int2 &b);
+#endif  /* !__KERNEL_OPENCL__ */
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline bool operator==(const int2 a, const int2 b)
+{
+	return (a.x == b.x && a.y == b.y);
+}
+
+ccl_device_inline int2 operator+(const int2 &a, const int2 &b)
+{
+	return make_int2(a.x + b.x, a.y + b.y);
+}
+
+ccl_device_inline int2 operator+=(int2 &a, const int2 &b)
+{
+	return a = a + b;
+}
+
+ccl_device_inline int2 operator-(const int2 &a, const int2 &b)
+{
+	return make_int2(a.x - b.x, a.y - b.y);
+}
+
+ccl_device_inline int2 operator*(const int2 &a, const int2 &b)
+{
+	return make_int2(a.x * b.x, a.y * b.y);
+}
+
+ccl_device_inline int2 operator/(const int2 &a, const int2 &b)
+{
+	return make_int2(a.x / b.x, a.y / b.y);
+}
+#endif  /* !__KERNEL_OPENCL__ */
+
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_INT2_H__ */

intern/cycles/util/util_math_int3.h

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_INT3_H__
+#define __UTIL_MATH_INT3_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline int3 min(int3 a, int3 b);
+ccl_device_inline int3 max(int3 a, int3 b);
+ccl_device_inline int3 clamp(const int3& a, int mn, int mx);
+ccl_device_inline int3 clamp(const int3& a, int3& mn, int mx);
+#endif  /* !__KERNEL_OPENCL__ */
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_OPENCL__
+ccl_device_inline int3 min(int3 a, int3 b)
+{
+#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
+	return int3(_mm_min_epi32(a.m128, b.m128));
+#else
+	return make_int3(min(a.x, b.x), min(a.y, b.y), min(a.z, b.z));
+#endif
+}
+
+ccl_device_inline int3 max(int3 a, int3 b)
+{
+#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
+	return int3(_mm_max_epi32(a.m128, b.m128));
+#else
+	return make_int3(max(a.x, b.x), max(a.y, b.y), max(a.z, b.z));
+#endif
+}
+
+ccl_device_inline int3 clamp(const int3& a, int mn, int mx)
+{
+#ifdef __KERNEL_SSE__
+	return min(max(a, make_int3(mn)), make_int3(mx));
+#else
+	return make_int3(clamp(a.x, mn, mx), clamp(a.y, mn, mx), clamp(a.z, mn, mx));
+#endif
+}
+
+ccl_device_inline int3 clamp(const int3& a, int3& mn, int mx)
+{
+#ifdef __KERNEL_SSE__
+	return min(max(a, mn), make_int3(mx));
+#else
+	return make_int3(clamp(a.x, mn.x, mx),
+	                 clamp(a.y, mn.y, mx),
+	                 clamp(a.z, mn.z, mx));
+#endif
+}
+#endif  /* !__KERNEL_OPENCL__ */
+
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_INT3_H__ */

intern/cycles/util/util_math_int4.h

@@ -0,0 +1,110 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_MATH_INT4_H__
+#define __UTIL_MATH_INT4_H__
+
+#ifndef __UTIL_MATH_H__
+#  error "Do not include this file directly, include util_types.h instead."
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+/*******************************************************************************
+ * Declaration.
+ */
+
+#ifndef __KERNEL_GPU__
+ccl_device_inline int4 operator+(const int4& a, const int4& b);
+ccl_device_inline int4 operator+=(int4& a, const int4& b);
+ccl_device_inline int4 operator>>(const int4& a, int i);
+ccl_device_inline int4 min(int4 a, int4 b);
+ccl_device_inline int4 max(int4 a, int4 b);
+ccl_device_inline int4 clamp(const int4& a, const int4& mn, const int4& mx);
+ccl_device_inline int4 select(const int4& mask, const int4& a, const int4& b);
+#endif  /* __KERNEL_GPU__ */
+
+/*******************************************************************************
+ * Definition.
+ */
+
+#ifndef __KERNEL_GPU__
+ccl_device_inline int4 operator+(const int4& a, const int4& b)
+{
+#ifdef __KERNEL_SSE__
+	return int4(_mm_add_epi32(a.m128, b.m128));
+#else
+	return make_int4(a.x+b.x, a.y+b.y, a.z+b.z, a.w+b.w);
+#endif
+}
+
+ccl_device_inline int4 operator+=(int4& a, const int4& b)
+{
+	return a = a + b;
+}
+
+ccl_device_inline int4 operator>>(const int4& a, int i)
+{
+#ifdef __KERNEL_SSE__
+	return int4(_mm_srai_epi32(a.m128, i));
+#else
+	return make_int4(a.x >> i, a.y >> i, a.z >> i, a.w >> i);
+#endif
+}
+
+ccl_device_inline int4 min(int4 a, int4 b)
+{
+#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
+	return int4(_mm_min_epi32(a.m128, b.m128));
+#else
+	return make_int4(min(a.x, b.x), min(a.y, b.y), min(a.z, b.z), min(a.w, b.w));
+#endif
+}
+
+ccl_device_inline int4 max(int4 a, int4 b)
+{
+#if defined(__KERNEL_SSE__) && defined(__KERNEL_SSE41__)
+	return int4(_mm_max_epi32(a.m128, b.m128));
+#else
+	return make_int4(max(a.x, b.x), max(a.y, b.y), max(a.z, b.z), max(a.w, b.w));
+#endif
+}
+
+ccl_device_inline int4 clamp(const int4& a, const int4& mn, const int4& mx)
+{
+	return min(max(a, mn), mx);
+}
+
+ccl_device_inline int4 select(const int4& mask, const int4& a, const int4& b)
+{
+#ifdef __KERNEL_SSE__
+	const __m128 m = _mm_cvtepi32_ps(mask);
+	/* TODO(sergey): avoid cvt. */
+	return int4(_mm_castps_si128(
+	        _mm_or_ps(_mm_and_ps(m, _mm_castsi128_ps(a)),
+	                  _mm_andnot_ps(m, _mm_castsi128_ps(b)))));
+#else
+	return make_int4((mask.x)? a.x: b.x,
+	                 (mask.y)? a.y: b.y,
+	                 (mask.z)? a.z: b.z,
+	                 (mask.w)? a.w: b.w);
+#endif
+}
+#endif  /* __KERNEL_GPU__ */
+
+CCL_NAMESPACE_END
+
+#endif /* __UTIL_MATH_INT4_H__ */

intern/cycles/util/util_types_float2.h

@@ -32,6 +32,7 @@ struct float2 {
 };
 
 ccl_device_inline float2 make_float2(float x, float y);
+ccl_device_inline void print_float2(const char *label, const float2& a);
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_float2_impl.h

@@ -21,6 +21,10 @@
 #  error "Do not include this file directly, include util_types.h instead."
 #endif
 
+#ifndef __KERNEL_GPU__
+#  include <cstdio>
+#endif
+
 CCL_NAMESPACE_BEGIN
 
 #ifndef __KERNEL_GPU__
@@ -43,6 +47,11 @@ ccl_device_inline float2 make_float2(float x, float y)
 	float2 a = {x, y};
 	return a;
 }
+
+ccl_device_inline void print_float2(const char *label, const float2& a)
+{
+	printf("%s: %.8f %.8f\n", label, (double)a.x, (double)a.y);
+}
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_float3.h

@@ -49,6 +49,7 @@ struct ccl_try_align(16) float3 {
 
 ccl_device_inline float3 make_float3(float f);
 ccl_device_inline float3 make_float3(float x, float y, float z);
+ccl_device_inline void print_float3(const char *label, const float3& a);
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_float3_impl.h

@@ -21,6 +21,10 @@
 #  error "Do not include this file directly, include util_types.h instead."
 #endif
 
+#ifndef __KERNEL_GPU__
+#  include <cstdio>
+#endif
+
 CCL_NAMESPACE_BEGIN
 
 #ifndef __KERNEL_GPU__
@@ -89,6 +93,11 @@ ccl_device_inline float3 make_float3(float x, float y, float z)
 #endif
 	return a;
 }
+
+ccl_device_inline void print_float3(const char *label, const float3& a)
+{
+	printf("%s: %.8f %.8f %.8f\n", label, (double)a.x, (double)a.y, (double)a.z);
+}
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_float4.h

@@ -53,6 +53,7 @@ struct ccl_try_align(16) float4 {
 ccl_device_inline float4 make_float4(float f);
 ccl_device_inline float4 make_float4(float x, float y, float z, float w);
 ccl_device_inline float4 make_float4(const int4& i);
+ccl_device_inline void print_float4(const char *label, const float4& a);
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_float4_impl.h

@@ -21,6 +21,10 @@
 #  error "Do not include this file directly, include util_types.h instead."
 #endif
 
+#ifndef __KERNEL_GPU__
+#  include <cstdio>
+#endif
+
 CCL_NAMESPACE_BEGIN
 
 #ifndef __KERNEL_GPU__
@@ -99,6 +103,13 @@ ccl_device_inline float4 make_float4(const int4& i)
 #endif
 	return a;
 }
+
+ccl_device_inline void print_float4(const char *label, const float4& a)
+{
+	printf("%s: %.8f %.8f %.8f %.8f\n",
+	       label, 
+	       (double)a.x, (double)a.y, (double)a.z, (double)a.w);
+}
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_int3.h

@@ -49,6 +49,7 @@ struct ccl_try_align(16) int3 {
 
 ccl_device_inline int3 make_int3(int i);
 ccl_device_inline int3 make_int3(int x, int y, int z);
+ccl_device_inline void print_int3(const char *label, const int3& a);
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_int3_impl.h

@@ -21,6 +21,10 @@
 #  error "Do not include this file directly, include util_types.h instead."
 #endif
 
+#ifndef __KERNEL_GPU__
+#  include <cstdio>
+#endif
+
 CCL_NAMESPACE_BEGIN
 
 #ifndef __KERNEL_GPU__
@@ -90,6 +94,11 @@ ccl_device_inline int3 make_int3(int x, int y, int z)
 
 	return a;
 }
+
+ccl_device_inline void print_int3(const char *label, const int3& a)
+{
+	printf("%s: %d %d %d\n", label, a.x, a.y, a.z);
+}
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_int4.h

@@ -53,6 +53,7 @@ struct ccl_try_align(16) int4 {
 ccl_device_inline int4 make_int4(int i);
 ccl_device_inline int4 make_int4(int x, int y, int z, int w);
 ccl_device_inline int4 make_int4(const float3& f);
+ccl_device_inline void print_int4(const char *label, const int4& a);
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END

intern/cycles/util/util_types_int4_impl.h

@@ -21,6 +21,10 @@
 #  error "Do not include this file directly, include util_types.h instead."
 #endif
 
+#ifndef __KERNEL_GPU__
+#  include <cstdio>
+#endif
+
 CCL_NAMESPACE_BEGIN
 
 #ifndef __KERNEL_GPU__
@@ -99,6 +103,11 @@ ccl_device_inline int4 make_int4(const float3& f)
 #endif
 	return a;
 }
+
+ccl_device_inline void print_int4(const char *label, const int4& a)
+{
+	printf("%s: %d %d %d %d\n", label, a.x, a.y, a.z, a.w);
+}
 #endif  /* __KERNEL_GPU__ */
 
 CCL_NAMESPACE_END