138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
/*
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Copyright (c) 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 ISPC_IS_WINDOWS
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#define NOMINMAX
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#elif defined(__linux__)
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#define ISPC_IS_LINUX
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#elif defined(__APPLE__)
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#define ISPC_IS_APPLE
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#endif
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#include <fcntl.h>
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#include <float.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <algorithm>
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#include <assert.h>
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#include <vector>
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#ifdef ISPC_IS_WINDOWS
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#endif
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#include "deferred.h"
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#include "kernels_ispc.h"
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#include "../timing.h"
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///////////////////////////////////////////////////////////////////////////
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int main(int argc, char** argv) {
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if (argc != 2) {
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printf("usage: deferred_shading <input_file>\n");
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return 1;
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}
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InputData *input = CreateInputDataFromFile(argv[1]);
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if (!input) {
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printf("Failed to load input file \"%s\"!\n", argv[1]);
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return 1;
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}
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Framebuffer framebuffer(input->header.framebufferWidth,
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input->header.framebufferHeight);
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InitDynamicC(input);
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#ifdef __cilkplusplus
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InitDynamicCilk(input);
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#endif // __cilkplusplus
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int nframes = 5;
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double ispcCycles = 1e30;
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for (int i = 0; i < 5; ++i) {
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framebuffer.clear();
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reset_and_start_timer();
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for (int j = 0; j < nframes; ++j)
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ispc::RenderStatic(&input->header, &input->arrays,
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VISUALIZE_LIGHT_COUNT,
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framebuffer.r, framebuffer.g, framebuffer.b);
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double mcycles = get_elapsed_mcycles() / nframes;
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ispcCycles = std::min(ispcCycles, mcycles);
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}
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printf("[ispc static + tasks]:\t\t[%.3f] million cycles to render "
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"%d x %d image\n", ispcCycles,
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input->header.framebufferWidth, input->header.framebufferHeight);
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WriteFrame("deferred-ispc-static.ppm", input, framebuffer);
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double serialCycles = 1e30;
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for (int i = 0; i < 5; ++i) {
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framebuffer.clear();
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reset_and_start_timer();
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for (int j = 0; j < nframes; ++j)
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DispatchDynamicC(input, &framebuffer);
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double mcycles = get_elapsed_mcycles() / nframes;
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serialCycles = std::min(serialCycles, mcycles);
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}
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printf("[C++ serial dynamic, 1 core]:\t[%.3f] million cycles\n",
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serialCycles);
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WriteFrame("deferred-serial-dynamic.ppm", input, framebuffer);
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#ifdef __cilkplusplus
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double dynamicCilkCycles = 1e30;
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for (int i = 0; i < 5; ++i) {
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framebuffer.clear();
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reset_and_start_timer();
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for (int j = 0; j < nframes; ++j)
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DispatchDynamicCilk(input, &framebuffer);
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double mcycles = get_elapsed_mcycles() / nframes;
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dynamicCilkCycles = std::min(dynamicCilkCycles, mcycles);
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}
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printf("[ispc + Cilk dynamic]:\t\t[%.3f] million cycles\n",
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dynamicCilkCycles);
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WriteFrame("deferred-ispc-dynamic.ppm", input, framebuffer);
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printf("\t\t\t\t(%.2fx speedup from static ISPC, %.2fx from Cilk+ISPC)\n",
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serialCycles/ispcCycles, serialCycles/dynamicCilkCycles);
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#else
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printf("\t\t\t\t(%.2fx speedup from ISPC)\n", serialCycles/ispcCycles);
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#endif // __cilkplusplus
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DeleteInputData(input);
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return 0;
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}
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