200 lines
6.5 KiB
C++
200 lines
6.5 KiB
C++
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2011-04-21
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// Updated : 2011-04-26
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// Licence : This source is under MIT licence
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// File : test/gtx/noise.cpp
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include <glm/glm.hpp>
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#include <glm/gtx/noise.hpp>
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#include <gli/gli.hpp>
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#include <gli/gtx/loader.hpp>
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#include <iostream>
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int test_simplex()
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{
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std::size_t const Size = 256;
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::simplex(glm::vec2(x / 64.f, y / 64.f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_simplex2d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::simplex(glm::vec3(x / 64.f, y / 64.f, 0.5f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_simplex3d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::simplex(glm::vec4(x / 64.f, y / 64.f, 0.5f, 0.5f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_simplex4d_256.dds");
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}
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return 0;
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}
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int test_perlin()
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{
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std::size_t const Size = 256;
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec2(x / 64.f, y / 64.f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin2d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec3(x / 64.f, y / 64.f, 0.5f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin3d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec4(x / 64.f, y / 64.f, 0.5f, 0.5f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin4d_256.dds");
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}
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return 0;
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}
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int test_perlin_pedioric()
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{
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std::size_t const Size = 256;
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec2(x / 64.f, y / 64.f), glm::vec2(2.0f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin_pedioric_2d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec3(x / 64.f, y / 64.f, 0.5f), glm::vec3(2.0f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin_pedioric_3d_256.dds");
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}
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{
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std::vector<glm::byte> ImageData(Size * Size * 3);
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for(std::size_t y = 0; y < Size; ++y)
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for(std::size_t x = 0; x < Size; ++x)
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{
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ImageData[(x + y * Size) * 3 + 0] = glm::byte(glm::perlin(glm::vec4(x / 64.f, y / 64.f, 0.5f, 0.5f), glm::vec4(2.0f)) * 128.f + 127.f);
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ImageData[(x + y * Size) * 3 + 1] = ImageData[(x + y * Size) * 3 + 0];
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ImageData[(x + y * Size) * 3 + 2] = ImageData[(x + y * Size) * 3 + 0];
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}
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gli::texture2D Texture(1);
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Texture[0] = gli::image2D(glm::uvec2(Size), gli::RGB8U);
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memcpy(Texture[0].data(), &ImageData[0], ImageData.size());
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gli::saveDDS9(Texture, "texture_perlin_pedioric_4d_256.dds");
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}
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return 0;
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}
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int main()
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{
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int Error = 0;
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Error += test_simplex();
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Error += test_perlin();
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Error += test_perlin_pedioric();
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return Error;
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}
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