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/*
Copyright (c) 2011-2023, Intel Corporation
SPDX-License-Identifier: BSD-3-Clause
*/
#ifdef _MSC_VER
#define ISPC_IS_WINDOWS
#define NOMINMAX
#elif defined(__linux__)
#define ISPC_IS_LINUX
#elif defined(__APPLE__)
#define ISPC_IS_APPLE
#endif
#include <algorithm>
#include <assert.h>
#include <fcntl.h>
#include <float.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <vector>
#ifdef ISPC_IS_WINDOWS
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include "../../common/timing.h"
#include "deferred.h"
#include "kernels_ispc.h"
///////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv) {
if (argc < 2) {
printf(
"usage: deferred_shading <input_file (e.g. data/pp1280x720.bin)> [tasks iterations] [serial iterations]\n");
return 1;
}
static unsigned int test_iterations[] = {5, 3, 500}; // last value is for nframes, it is scale.
if (argc == 5) {
for (int i = 0; i < 3; i++) {
test_iterations[i] = atoi(argv[2 + i]);
}
}
InputData *input = CreateInputDataFromFile(argv[1]);
if (!input) {
printf("Failed to load input file \"%s\"!\n", argv[1]);
return 1;
}
Framebuffer framebuffer(input->header.framebufferWidth, input->header.framebufferHeight);
InitDynamicC(input);
int nframes = test_iterations[2];
double ispcCycles = 1e30;
for (unsigned int i = 0; i < test_iterations[0]; ++i) {
framebuffer.clear();
reset_and_start_timer();
for (int j = 0; j < nframes; ++j)
ispc::RenderStatic(input->header, input->arrays, VISUALIZE_LIGHT_COUNT, framebuffer.r, framebuffer.g,
framebuffer.b);
double mcycles = get_elapsed_mcycles() / nframes;
printf("@time of ISPC + TASKS run:\t\t\t[%.3f] million cycles\n", mcycles);
ispcCycles = std::min(ispcCycles, mcycles);
}
printf("[ispc static + tasks]:\t\t[%.3f] million cycles to render "
"%d x %d image\n",
ispcCycles, input->header.framebufferWidth, input->header.framebufferHeight);
WriteFrame("deferred-ispc-static.ppm", input, framebuffer);
nframes = 3;
double serialCycles = 1e30;
for (unsigned int i = 0; i < test_iterations[1]; ++i) {
framebuffer.clear();
reset_and_start_timer();
for (int j = 0; j < nframes; ++j)
DispatchDynamicC(input, &framebuffer);
double mcycles = get_elapsed_mcycles() / nframes;
printf("@time of serial run:\t\t\t[%.3f] million cycles\n", mcycles);
serialCycles = std::min(serialCycles, mcycles);
}
printf("[C++ serial dynamic, 1 core]:\t[%.3f] million cycles to render image\n", serialCycles);
WriteFrame("deferred-serial-dynamic.ppm", input, framebuffer);
printf("\t\t\t\t(%.2fx speedup from ISPC + tasks)\n", serialCycles / ispcCycles);
DeleteInputData(input);
return 0;
}
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