Function main

cli/source/cli.cpp:8–159

using namespace IBLLib;

int main(int argc, char* argv[])
{
	const char* pathIn = nullptr;
	const char* pathOutCubeMap = nullptr;
	const char* pathOutLUT = nullptr;
	unsigned int sampleCount = 1024u;
	unsigned int mipLevelCount = 0u;
	unsigned int cubeMapResolution = 0u;
	OutputFormat targetFormat = OutputFormat::R16G16B16A16_SFLOAT;
	Distribution distribution = Distribution::GGX;
	float lodBias = 0.0f;
	bool enableDebugOutput = false;

	const char* targetFormatString = "R16G16B16A16_SFLOAT";
	const char* distributionString = "GGX";

	if (argc == 1 ||
		strcmp(argv[1], "-h") == 0 ||
		strcmp(argv[1], "-help") == 0)
	{
		printf("glTF-IBL-Sampler usage:\n");

		printf("-inputPath: path to panorama image (default) or cube map (if inputIsCubeMap flag ist set) \n");
		printf("-outCubeMap: output path for filtered cube map\n");
		printf("-outLUT output path for BRDF LUT\n");
		printf("-distribution NDF to sample (Lambertian, GGX, Charlie)\n");
		printf("-sampleCount: number of samples used for filtering (default = 1024)\n");
		printf("-mipLevelCount: number of mip levels of specular cube map. If omitted, an optimal mipmap level is chosen, based on the input panorama's resolution.\n");
		printf("-cubeMapResolution: resolution of output cube map.  If omitted, an optimal resolution is chosen, based on the input panorama's resolution.\n");
		printf("-targetFormat: specify output texture format (R8G8B8A8_UNORM, R16G16B16A16_SFLOAT, R32G32B32A32_SFLOAT)  \n");
		printf("-lodBias: level of detail bias applied to filtering (default = 0) \n");


		return 0;
	}

	for (int i = 1; i < argc; ++i)
	{
		const char* nextArg = i + 1 < argc ? argv[i+1] : nullptr;
		if (strcmp(argv[i], "-inputPath") == 0)
		{
			pathIn = nextArg;
		}
		else if (strcmp(argv[i], "-outCubeMap") == 0)
		{
			pathOutCubeMap = nextArg;
		}
		else if (strcmp(argv[i], "-outLUT") == 0)
		{
			pathOutLUT = nextArg;
		}
		else if (strcmp(argv[i], "-sampleCount") == 0)
		{
			sampleCount = strtoul(nextArg, NULL, 0);
		}
		else if (strcmp(argv[i], "-mipLevelCount") == 0)
		{
			mipLevelCount = strtoul(nextArg, NULL, 0);