Add new example with implementation of Perlin Noise
~4.2x speedup versus serial on OSX / gcc. ~2.9x speedup versus serial on Windows / MSVC.
This commit is contained in:
Matt Pharr
16
builtins.m4
16
builtins.m4
@@ -1431,26 +1431,24 @@ pl_done:
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define(`gen_gather', `
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;; Define the utility function to do the gather operation for a single element
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;; of the type
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define internal <$1 x $2> @__gather_elt_$2(i64 %ptr64, <$1 x i32> %offsets, <$1 x $2> %ret,
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define internal <$1 x $2> @__gather_elt_$2(i8 * %ptr, <$1 x i32> %offsets, <$1 x $2> %ret,
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i32 %lane) nounwind readonly alwaysinline {
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; compute address for this one from the base
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%offset32 = extractelement <$1 x i32> %offsets, i32 %lane
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%offset64 = zext i32 %offset32 to i64
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%ptrdelta = add i64 %ptr64, %offset64
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%ptr = inttoptr i64 %ptrdelta to $2 *
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%ptroffset = getelementptr i8 * %ptr, i32 %offset32
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%ptrcast = bitcast i8 * %ptroffset to $2 *
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; load value and insert into returned value
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%val = load $2 *%ptr
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%val = load $2 *%ptrcast
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%updatedret = insertelement <$1 x $2> %ret, $2 %val, i32 %lane
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ret <$1 x $2> %updatedret
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}
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define <$1 x $2> @__gather_base_offsets_$2(i8*, <$1 x i32> %offsets,
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define <$1 x $2> @__gather_base_offsets_$2(i8 * %ptr, <$1 x i32> %offsets,
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<$1 x i32> %vecmask) nounwind readonly alwaysinline {
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entry:
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%mask = call i32 @__movmsk(<$1 x i32> %vecmask)
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%ptr64 = ptrtoint i8 * %0 to i64
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%maskKnown = call i1 @__is_compile_time_constant_mask(<$1 x i32> %vecmask)
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br i1 %maskKnown, label %known_mask, label %unknown_mask
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@@ -1474,10 +1472,10 @@ unknown_mask:
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<$1 x i32> %vecmask)
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%newOffsets = load <$1 x i32> * %offsetsPtr
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%ret0 = call <$1 x $2> @__gather_elt_$2(i64 %ptr64, <$1 x i32> %newOffsets,
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%ret0 = call <$1 x $2> @__gather_elt_$2(i8 * %ptr, <$1 x i32> %newOffsets,
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<$1 x $2> undef, i32 0)
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forloop(lane, 1, eval($1-1),
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`patsubst(patsubst(`%retLANE = call <$1 x $2> @__gather_elt_$2(i64 %ptr64,
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`patsubst(patsubst(`%retLANE = call <$1 x $2> @__gather_elt_$2(i8 * %ptr,
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<$1 x i32> %newOffsets, <$1 x $2> %retPREV, i32 LANE)
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', `LANE', lane), `PREV', eval(lane-1))')
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ret <$1 x $2> %ret`'eval($1-1)
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@@ -57,6 +57,13 @@ Linux, a pthreads-based task system is used (tasks_pthreads.cpp). When
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using tasks with ispc, no task system is mandated; the user is free to plug
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in any task system they want, for ease of interoperating with existing task
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systems.
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Noise
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=====
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This example has an implementation of Ken Perlin's procedural "noise"
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function, as described in his 2002 "Improving Noise" SIGGRAPH paper.
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Options
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=======
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@@ -48,19 +48,19 @@ static void __cpuid(int info[4], int infoType) {
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inline bool CPUSupportsSSE2() {
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int info[4];
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__cpuid(info, 1);
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return (info[3] & (1 << 26));
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return (info[3] & (1 << 26)) != 0;
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}
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inline bool CPUSupportsSSE4() {
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int info[4];
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__cpuid(info, 1);
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return (info[2] & (1 << 19));
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return (info[2] & (1 << 19)) != 0;
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}
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inline bool CPUSupportsAVX() {
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int info[4];
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__cpuid(info, 1);
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return (info[2] & (1 << 28));
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return (info[2] & (1 << 28)) != 0;
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}
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#endif // ISPC_CPUID_H
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@@ -15,6 +15,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "mandelbrot_tasks", "mandelb
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "aobench_instrumented", "aobench_instrumented\aobench_instrumented.vcxproj", "{B3B4AE3D-6D5A-4CF9-AF5B-43CF2131B958}"
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "noise", "noise\noise.vcxproj", "{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Win32 = Debug|Win32
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@@ -79,6 +81,14 @@ Global
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{B3B4AE3D-6D5A-4CF9-AF5B-43CF2131B958}.Release|Win32.Build.0 = Release|Win32
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{B3B4AE3D-6D5A-4CF9-AF5B-43CF2131B958}.Release|x64.ActiveCfg = Release|x64
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{B3B4AE3D-6D5A-4CF9-AF5B-43CF2131B958}.Release|x64.Build.0 = Release|x64
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Debug|Win32.ActiveCfg = Debug|Win32
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Debug|Win32.Build.0 = Debug|Win32
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Debug|x64.ActiveCfg = Debug|x64
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Debug|x64.Build.0 = Debug|x64
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Release|Win32.ActiveCfg = Release|Win32
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Release|Win32.Build.0 = Release|Win32
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Release|x64.ActiveCfg = Release|x64
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{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}.Release|x64.Build.0 = Release|x64
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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3
examples/noise/.gitignore
vendored
Normal file
3
examples/noise/.gitignore
vendored
Normal file
@@ -0,0 +1,3 @@
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noise
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*.ppm
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objs
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26
examples/noise/Makefile
Normal file
26
examples/noise/Makefile
Normal file
@@ -0,0 +1,26 @@
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CXX=g++ -m64
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CXXFLAGS=-Iobjs/ -O3 -Wall
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ISPC=ispc
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ISPCFLAGS=-O2 --target=sse4 --arch=x86-64
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default: noise
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.PHONY: dirs clean
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dirs:
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/bin/mkdir -p objs/
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clean:
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/bin/rm -rf objs *~ noise
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noise: dirs objs/noise.o objs/noise_serial.o objs/noise_ispc.o
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$(CXX) $(CXXFLAGS) -o $@ objs/noise.o objs/noise_ispc.o objs/noise_serial.o -lm
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objs/%.o: %.cpp
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$(CXX) $< $(CXXFLAGS) -c -o $@
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objs/noise.o: objs/noise_ispc.h
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objs/%_ispc.h objs/%_ispc.o: %.ispc
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$(ISPC) $(ISPCFLAGS) $< -o objs/$*_ispc.o -h objs/$*_ispc.h
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150
examples/noise/noise.cpp
Normal file
150
examples/noise/noise.cpp
Normal file
@@ -0,0 +1,150 @@
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/*
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Copyright (c) 2010-2011, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#define NOMINMAX
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#pragma warning (disable: 4244)
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#pragma warning (disable: 4305)
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#endif
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#include <stdio.h>
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#include <algorithm>
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#include "../timing.h"
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#include "../cpuid.h"
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#include "noise_ispc.h"
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using namespace ispc;
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extern void noise_serial(float x0, float y0, float x1, float y1,
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int width, int height, float output[]);
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/* Write a PPM image file with the image */
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static void
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writePPM(float *buf, int width, int height, const char *fn) {
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FILE *fp = fopen(fn, "wb");
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fprintf(fp, "P6\n");
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fprintf(fp, "%d %d\n", width, height);
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fprintf(fp, "255\n");
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for (int i = 0; i < width*height; ++i) {
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float v = buf[i] * 255.f;
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if (v < 0) v = 0;
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if (v > 255) v = 255;
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for (int j = 0; j < 3; ++j)
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fputc((char)v, fp);
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}
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fclose(fp);
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}
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// Make sure that the vector ISA used during compilation is supported by
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// the processor. The ISPC_TARGET_* macro is set in the ispc-generated
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// header file that we include above.
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static void
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ensureTargetISAIsSupported() {
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#if defined(ISPC_TARGET_SSE2)
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bool isaSupported = CPUSupportsSSE2();
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const char *target = "SSE2";
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#elif defined(ISPC_TARGET_SSE4)
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bool isaSupported = CPUSupportsSSE4();
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const char *target = "SSE4";
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#elif defined(ISPC_TARGET_AVX)
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bool isaSupported = CPUSupportsAVX();
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const char *target = "AVX";
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#else
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#error "Unknown ISPC_TARGET_* value"
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#endif
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if (!isaSupported) {
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fprintf(stderr, "***\n*** Error: the ispc-compiled code uses the %s instruction "
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"set, which isn't\n*** supported by this computer's CPU!\n", target);
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fprintf(stderr, "***\n*** Please modify the "
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#ifdef _MSC_VER
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"MSVC project file "
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#else
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"Makefile "
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#endif
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"to select another target (e.g. sse2)\n***\n");
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exit(1);
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}
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}
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int main() {
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unsigned int width = 768;
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unsigned int height = 768;
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float x0 = -10;
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float x1 = 10;
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float y0 = -10;
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float y1 = 10;
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float *buf = new float[width*height];
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ensureTargetISAIsSupported();
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//
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// Compute the image using the ispc implementation; report the minimum
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// time of three runs.
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//
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double minISPC = 1e30;
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for (int i = 0; i < 3; ++i) {
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reset_and_start_timer();
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noise_ispc(x0, y0, x1, y1, width, height, buf);
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double dt = get_elapsed_mcycles();
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minISPC = std::min(minISPC, dt);
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}
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printf("[noise ispc]:\t\t\t[%.3f] million cycles\n", minISPC);
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writePPM(buf, width, height, "noise-ispc.ppm");
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// Clear out the buffer
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for (unsigned int i = 0; i < width * height; ++i)
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buf[i] = 0;
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//
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// And run the serial implementation 3 times, again reporting the
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// minimum time.
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//
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double minSerial = 1e30;
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for (int i = 0; i < 3; ++i) {
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reset_and_start_timer();
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noise_serial(x0, y0, x1, y1, width, height, buf);
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double dt = get_elapsed_mcycles();
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minSerial = std::min(minSerial, dt);
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}
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printf("[noise serial]:\t\t\t[%.3f] millon cycles\n", minSerial);
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writePPM(buf, width, height, "noise-serial.ppm");
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printf("\t\t\t\t(%.2fx speedup from ISPC)\n", minSerial/minISPC);
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return 0;
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}
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164
examples/noise/noise.ispc
Normal file
164
examples/noise/noise.ispc
Normal file
@@ -0,0 +1,164 @@
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/*
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Copyright (c) 2010-2011, Intel Corporation
|
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All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the name of Intel Corporation nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
||||
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
||||
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
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#define NOISE_PERM_SIZE 256
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static uniform int NoisePerm[2 * NOISE_PERM_SIZE] = {
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151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140,
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36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120,
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234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33,
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88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71,
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134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133,
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230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161,
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1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130,
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116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250,
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124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227,
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47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, 44,
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154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9, 129, 22, 39, 253, 19,
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98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228, 251,
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34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145, 235, 249,
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14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176, 115,
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121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72,
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243, 141, 128, 195, 78, 66, 215, 61, 156, 180, 151, 160, 137, 91, 90, 15,
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131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99,
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37, 240, 21, 10, 23, 190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252,
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219, 203, 117, 35, 11, 32, 57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125,
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136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158,
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231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245,
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40, 244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187,
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208, 89, 18, 169, 200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109,
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198, 173, 186, 3, 64, 52, 217, 226, 250, 124, 123, 5, 202, 38, 147, 118,
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126, 255, 82, 85, 212, 207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42,
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223, 183, 170, 213, 119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155,
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167, 43, 172, 9, 129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232,
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178, 185, 112, 104, 218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144,
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12, 191, 179, 162, 241, 81, 51, 145, 235, 249, 14, 239, 107, 49, 192, 214,
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31, 181, 199, 106, 157, 184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150,
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254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72, 243, 141, 128, 195, 78,
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66, 215, 61, 156, 180
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};
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inline float SmoothStep(float low, float high, float value) {
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float v = clamp((value - low) / (high - low), 0.f, 1.f);
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return v * v * (-2.f * v + 3.f);
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}
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|
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|
||||
inline int Floor2Int(float val) {
|
||||
return (int)floor(val);
|
||||
}
|
||||
|
||||
|
||||
inline float Grad(int x, int y, int z, float dx, float dy, float dz) {
|
||||
int h = NoisePerm[NoisePerm[NoisePerm[x]+y]+z];
|
||||
h &= 15;
|
||||
float u = h<8 || h==12 || h==13 ? dx : dy;
|
||||
float v = h<4 || h==12 || h==13 ? dy : dz;
|
||||
return ((h&1) ? -u : u) + ((h&2) ? -v : v);
|
||||
}
|
||||
|
||||
|
||||
inline float NoiseWeight(float t) {
|
||||
float t3 = t*t*t;
|
||||
float t4 = t3*t;
|
||||
return 6.f*t4*t - 15.f*t4 + 10.f*t3;
|
||||
}
|
||||
|
||||
|
||||
inline float Lerp(float t, float low, float high) {
|
||||
return (1. - t) * low + t * high;
|
||||
}
|
||||
|
||||
|
||||
static float Noise(float x, float y, float z) {
|
||||
// Compute noise cell coordinates and offsets
|
||||
int ix = Floor2Int(x), iy = Floor2Int(y), iz = Floor2Int(z);
|
||||
float dx = x - ix, dy = y - iy, dz = z - iz;
|
||||
|
||||
// Compute gradient weights
|
||||
ix &= (NOISE_PERM_SIZE-1);
|
||||
iy &= (NOISE_PERM_SIZE-1);
|
||||
iz &= (NOISE_PERM_SIZE-1);
|
||||
float w000 = Grad(ix, iy, iz, dx, dy, dz);
|
||||
float w100 = Grad(ix+1, iy, iz, dx-1, dy, dz);
|
||||
float w010 = Grad(ix, iy+1, iz, dx, dy-1, dz);
|
||||
float w110 = Grad(ix+1, iy+1, iz, dx-1, dy-1, dz);
|
||||
float w001 = Grad(ix, iy, iz+1, dx, dy, dz-1);
|
||||
float w101 = Grad(ix+1, iy, iz+1, dx-1, dy, dz-1);
|
||||
float w011 = Grad(ix, iy+1, iz+1, dx, dy-1, dz-1);
|
||||
float w111 = Grad(ix+1, iy+1, iz+1, dx-1, dy-1, dz-1);
|
||||
|
||||
// Compute trilinear interpolation of weights
|
||||
float wx = NoiseWeight(dx), wy = NoiseWeight(dy), wz = NoiseWeight(dz);
|
||||
float x00 = Lerp(wx, w000, w100);
|
||||
float x10 = Lerp(wx, w010, w110);
|
||||
float x01 = Lerp(wx, w001, w101);
|
||||
float x11 = Lerp(wx, w011, w111);
|
||||
float y0 = Lerp(wy, x00, x10);
|
||||
float y1 = Lerp(wy, x01, x11);
|
||||
return Lerp(wz, y0, y1);
|
||||
}
|
||||
|
||||
|
||||
static float Turbulence(float x, float y, float z, int octaves) {
|
||||
float omega = 0.6;
|
||||
|
||||
float sum = 0., lambda = 1., o = 1.;
|
||||
for (int i = 0; i < octaves; ++i) {
|
||||
sum += abs(o * Noise(lambda * x, lambda * y, lambda * z));
|
||||
lambda *= 1.99f;
|
||||
o *= omega;
|
||||
}
|
||||
return sum * 0.5;
|
||||
}
|
||||
|
||||
|
||||
export void noise_ispc(uniform float x0, uniform float y0, uniform float x1,
|
||||
uniform float y1, uniform int width, uniform int height,
|
||||
uniform float output[])
|
||||
{
|
||||
uniform float dx = (x1 - x0) / width;
|
||||
uniform float dy = (y1 - y0) / height;
|
||||
|
||||
for (uniform int j = 0; j < height; j++) {
|
||||
for (uniform int i = 0; i < width; i += programCount) {
|
||||
float x = x0 + (i + programIndex) * dx;
|
||||
float y = y0 + j * dy;
|
||||
|
||||
int index = (j * width + i + programIndex);
|
||||
output[index] = Turbulence(x, y, 0.6, 8);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
167
examples/noise/noise.vcxproj
Executable file
167
examples/noise/noise.vcxproj
Executable file
@@ -0,0 +1,167 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||
<ItemGroup Label="ProjectConfigurations">
|
||||
<ProjectConfiguration Include="Debug|Win32">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Debug|x64">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|Win32">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>Win32</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|x64">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectGuid>{0E0886D8-8B5E-4EAF-9A21-91E63DAF81FD}</ProjectGuid>
|
||||
<Keyword>Win32Proj</Keyword>
|
||||
<RootNamespace>noise</RootNamespace>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>true</UseDebugLibraries>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>true</UseDebugLibraries>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>false</UseDebugLibraries>
|
||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
|
||||
<ConfigurationType>Application</ConfigurationType>
|
||||
<UseDebugLibraries>false</UseDebugLibraries>
|
||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
|
||||
<ImportGroup Label="ExtensionSettings">
|
||||
</ImportGroup>
|
||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
</ImportGroup>
|
||||
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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||||
</ImportGroup>
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||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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||||
</ImportGroup>
|
||||
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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||||
</ImportGroup>
|
||||
<PropertyGroup Label="UserMacros" />
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<LinkIncremental>true</LinkIncremental>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
|
||||
<LinkIncremental>true</LinkIncremental>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<LinkIncremental>false</LinkIncremental>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
|
||||
<LinkIncremental>false</LinkIncremental>
|
||||
</PropertyGroup>
|
||||
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<ClCompile>
|
||||
<PrecompiledHeader>
|
||||
</PrecompiledHeader>
|
||||
<WarningLevel>Level3</WarningLevel>
|
||||
<Optimization>Disabled</Optimization>
|
||||
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<IntrinsicFunctions>true</IntrinsicFunctions>
|
||||
<FloatingPointModel>Fast</FloatingPointModel>
|
||||
</ClCompile>
|
||||
<Link>
|
||||
<SubSystem>Console</SubSystem>
|
||||
<GenerateDebugInformation>true</GenerateDebugInformation>
|
||||
</Link>
|
||||
</ItemDefinitionGroup>
|
||||
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
|
||||
<ClCompile>
|
||||
<PrecompiledHeader>
|
||||
</PrecompiledHeader>
|
||||
<WarningLevel>Level3</WarningLevel>
|
||||
<Optimization>Disabled</Optimization>
|
||||
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<IntrinsicFunctions>true</IntrinsicFunctions>
|
||||
<FloatingPointModel>Fast</FloatingPointModel>
|
||||
</ClCompile>
|
||||
<Link>
|
||||
<SubSystem>Console</SubSystem>
|
||||
<GenerateDebugInformation>true</GenerateDebugInformation>
|
||||
</Link>
|
||||
</ItemDefinitionGroup>
|
||||
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<ClCompile>
|
||||
<WarningLevel>Level3</WarningLevel>
|
||||
<PrecompiledHeader>
|
||||
</PrecompiledHeader>
|
||||
<Optimization>MaxSpeed</Optimization>
|
||||
<FunctionLevelLinking>true</FunctionLevelLinking>
|
||||
<IntrinsicFunctions>true</IntrinsicFunctions>
|
||||
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<FloatingPointModel>Fast</FloatingPointModel>
|
||||
</ClCompile>
|
||||
<Link>
|
||||
<SubSystem>Console</SubSystem>
|
||||
<GenerateDebugInformation>true</GenerateDebugInformation>
|
||||
<EnableCOMDATFolding>true</EnableCOMDATFolding>
|
||||
<OptimizeReferences>true</OptimizeReferences>
|
||||
</Link>
|
||||
</ItemDefinitionGroup>
|
||||
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
|
||||
<ClCompile>
|
||||
<WarningLevel>Level3</WarningLevel>
|
||||
<PrecompiledHeader>
|
||||
</PrecompiledHeader>
|
||||
<Optimization>MaxSpeed</Optimization>
|
||||
<FunctionLevelLinking>true</FunctionLevelLinking>
|
||||
<IntrinsicFunctions>true</IntrinsicFunctions>
|
||||
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
<FloatingPointModel>Fast</FloatingPointModel>
|
||||
</ClCompile>
|
||||
<Link>
|
||||
<SubSystem>Console</SubSystem>
|
||||
<GenerateDebugInformation>true</GenerateDebugInformation>
|
||||
<EnableCOMDATFolding>true</EnableCOMDATFolding>
|
||||
<OptimizeReferences>true</OptimizeReferences>
|
||||
</Link>
|
||||
</ItemDefinitionGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="noise.cpp" />
|
||||
<ClCompile Include="noise_serial.cpp" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<CustomBuild Include="noise.ispc">
|
||||
<FileType>Document</FileType>
|
||||
<Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">ispc -O2 %(Filename).ispc -o %(Filename).obj -h %(Filename)_ispc.h --arch=x86 --target=sse4
|
||||
</Command>
|
||||
<Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">ispc -O2 %(Filename).ispc -o %(Filename).obj -h %(Filename)_ispc.h --target=sse4
|
||||
</Command>
|
||||
<Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(Filename).obj;%(Filename)_ispc.h</Outputs>
|
||||
<Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(Filename).obj;%(Filename)_ispc.h</Outputs>
|
||||
<Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">ispc -O2 %(Filename).ispc -o %(Filename).obj -h %(Filename)_ispc.h --arch=x86 --target=sse4
|
||||
</Command>
|
||||
<Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">ispc -O2 %(Filename).ispc -o %(Filename).obj -h %(Filename)_ispc.h --target=sse4
|
||||
</Command>
|
||||
<Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">%(Filename).obj;%(Filename)_ispc.h</Outputs>
|
||||
<Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(Filename).obj;%(Filename)_ispc.h</Outputs>
|
||||
</CustomBuild>
|
||||
</ItemGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
|
||||
<ImportGroup Label="ExtensionTargets">
|
||||
</ImportGroup>
|
||||
</Project>
|
||||
170
examples/noise/noise_serial.cpp
Normal file
170
examples/noise/noise_serial.cpp
Normal file
@@ -0,0 +1,170 @@
|
||||
/*
|
||||
Copyright (c) 2010-2011, Intel Corporation
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the name of Intel Corporation nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
||||
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
||||
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <math.h>
|
||||
|
||||
#define NOISE_PERM_SIZE 256
|
||||
|
||||
static int NoisePerm[2 * NOISE_PERM_SIZE] = {
|
||||
151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140,
|
||||
36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120,
|
||||
234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33,
|
||||
88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71,
|
||||
134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133,
|
||||
230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161,
|
||||
1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130,
|
||||
116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250,
|
||||
124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227,
|
||||
47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, 44,
|
||||
154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9, 129, 22, 39, 253, 19,
|
||||
98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228, 251,
|
||||
34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145, 235, 249,
|
||||
14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176, 115,
|
||||
121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72,
|
||||
243, 141, 128, 195, 78, 66, 215, 61, 156, 180, 151, 160, 137, 91, 90, 15,
|
||||
131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99,
|
||||
37, 240, 21, 10, 23, 190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252,
|
||||
219, 203, 117, 35, 11, 32, 57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125,
|
||||
136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158,
|
||||
231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245,
|
||||
40, 244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187,
|
||||
208, 89, 18, 169, 200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109,
|
||||
198, 173, 186, 3, 64, 52, 217, 226, 250, 124, 123, 5, 202, 38, 147, 118,
|
||||
126, 255, 82, 85, 212, 207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42,
|
||||
223, 183, 170, 213, 119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155,
|
||||
167, 43, 172, 9, 129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232,
|
||||
178, 185, 112, 104, 218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144,
|
||||
12, 191, 179, 162, 241, 81, 51, 145, 235, 249, 14, 239, 107, 49, 192, 214,
|
||||
31, 181, 199, 106, 157, 184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150,
|
||||
254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72, 243, 141, 128, 195, 78,
|
||||
66, 215, 61, 156, 180
|
||||
};
|
||||
|
||||
|
||||
inline float Clamp(float v, float low, float high) {
|
||||
return v < low ? low : ((v > high) ? high : v);
|
||||
}
|
||||
|
||||
|
||||
inline float SmoothStep(float low, float high, float value) {
|
||||
float v = Clamp((value - low) / (high - low), 0.f, 1.f);
|
||||
return v * v * (-2.f * v + 3.f);
|
||||
}
|
||||
|
||||
|
||||
inline int Floor2Int(float val) {
|
||||
return (int)floorf(val);
|
||||
}
|
||||
|
||||
|
||||
inline float Grad(int x, int y, int z, float dx, float dy, float dz) {
|
||||
int h = NoisePerm[NoisePerm[NoisePerm[x]+y]+z];
|
||||
h &= 15;
|
||||
float u = h<8 || h==12 || h==13 ? dx : dy;
|
||||
float v = h<4 || h==12 || h==13 ? dy : dz;
|
||||
return ((h&1) ? -u : u) + ((h&2) ? -v : v);
|
||||
}
|
||||
|
||||
|
||||
inline float NoiseWeight(float t) {
|
||||
float t3 = t*t*t;
|
||||
float t4 = t3*t;
|
||||
return 6.f*t4*t - 15.f*t4 + 10.f*t3;
|
||||
}
|
||||
|
||||
|
||||
inline float Lerp(float t, float low, float high) {
|
||||
return (1. - t) * low + t * high;
|
||||
}
|
||||
|
||||
|
||||
static float Noise(float x, float y, float z) {
|
||||
// Compute noise cell coordinates and offsets
|
||||
int ix = Floor2Int(x), iy = Floor2Int(y), iz = Floor2Int(z);
|
||||
float dx = x - ix, dy = y - iy, dz = z - iz;
|
||||
|
||||
// Compute gradient weights
|
||||
ix &= (NOISE_PERM_SIZE-1);
|
||||
iy &= (NOISE_PERM_SIZE-1);
|
||||
iz &= (NOISE_PERM_SIZE-1);
|
||||
float w000 = Grad(ix, iy, iz, dx, dy, dz);
|
||||
float w100 = Grad(ix+1, iy, iz, dx-1, dy, dz);
|
||||
float w010 = Grad(ix, iy+1, iz, dx, dy-1, dz);
|
||||
float w110 = Grad(ix+1, iy+1, iz, dx-1, dy-1, dz);
|
||||
float w001 = Grad(ix, iy, iz+1, dx, dy, dz-1);
|
||||
float w101 = Grad(ix+1, iy, iz+1, dx-1, dy, dz-1);
|
||||
float w011 = Grad(ix, iy+1, iz+1, dx, dy-1, dz-1);
|
||||
float w111 = Grad(ix+1, iy+1, iz+1, dx-1, dy-1, dz-1);
|
||||
|
||||
// Compute trilinear interpolation of weights
|
||||
float wx = NoiseWeight(dx), wy = NoiseWeight(dy), wz = NoiseWeight(dz);
|
||||
float x00 = Lerp(wx, w000, w100);
|
||||
float x10 = Lerp(wx, w010, w110);
|
||||
float x01 = Lerp(wx, w001, w101);
|
||||
float x11 = Lerp(wx, w011, w111);
|
||||
float y0 = Lerp(wy, x00, x10);
|
||||
float y1 = Lerp(wy, x01, x11);
|
||||
return Lerp(wz, y0, y1);
|
||||
}
|
||||
|
||||
|
||||
static float Turbulence(float x, float y, float z, int octaves) {
|
||||
float omega = 0.6;
|
||||
|
||||
float sum = 0., lambda = 1., o = 1.;
|
||||
for (int i = 0; i < octaves; ++i) {
|
||||
sum += fabsf(o * Noise(lambda * x, lambda * y, lambda * z));
|
||||
lambda *= 1.99f;
|
||||
o *= omega;
|
||||
}
|
||||
return sum * 0.5;
|
||||
}
|
||||
|
||||
|
||||
void noise_serial(float x0, float y0, float x1, float y1,
|
||||
int width, int height, float output[])
|
||||
{
|
||||
float dx = (x1 - x0) / width;
|
||||
float dy = (y1 - y0) / height;
|
||||
|
||||
for (int j = 0; j < height; j++) {
|
||||
for (int i = 0; i < width; ++i) {
|
||||
float x = x0 + i * dx;
|
||||
float y = y0 + j * dy;
|
||||
|
||||
int index = (j * width + i);
|
||||
output[index] = Turbulence(x, y, 0.6, 8);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user