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copied!<p>As a side project I've had for a while now I've been trying to create some Voxel terrain. However, to my dismay the textures seems to not be working properly. I'm mapping the texture with GL_REPEAT and GL_NEAREST. The texture is found in a sprite sheet and is 16x16. I'm currently using the minecraft textures for debugging. I've tried fixing it by moving the texture 1 texel in but this didn't work either. </p> <p><img src="https://i.stack.imgur.com/6Ucyi.jpg" alt="enter image description here"></p> <p>Here is the code that handles it: </p> <pre><code>void Chunk::CreateCube(int x, int y, int z, bool activeStates[], int ID) { double TEXTURE_SIZE = 256; glm::vec3 p1(x-BLOCK_RENDER_SIZE, y-BLOCK_RENDER_SIZE, z+BLOCK_RENDER_SIZE); //left bottom front glm::vec2 t1(0.5/TEXTURE_SIZE, 0.5/TEXTURE_SIZE); glm::vec3 p2(x+BLOCK_RENDER_SIZE, y-BLOCK_RENDER_SIZE, z+BLOCK_RENDER_SIZE); //right bottom front glm::vec2 t2(1-(0.5/TEXTURE_SIZE), 0.5/TEXTURE_SIZE); glm::vec3 p3(x+BLOCK_RENDER_SIZE, y+BLOCK_RENDER_SIZE, z+BLOCK_RENDER_SIZE); // right top front glm::vec2 t3(1-(0.5/TEXTURE_SIZE), 1-(0.5/TEXTURE_SIZE)); glm::vec3 p4(x-BLOCK_RENDER_SIZE, y+BLOCK_RENDER_SIZE, z+BLOCK_RENDER_SIZE); // left top front glm::vec2 t4(0.5/TEXTURE_SIZE, 1-(0.5/TEXTURE_SIZE)); glm::vec3 p5(x+BLOCK_RENDER_SIZE, y-BLOCK_RENDER_SIZE, z-BLOCK_RENDER_SIZE); // right bottom back glm::vec2 t5(0.5/TEXTURE_SIZE, 0.5/TEXTURE_SIZE); glm::vec3 p6(x-BLOCK_RENDER_SIZE, y-BLOCK_RENDER_SIZE, z-BLOCK_RENDER_SIZE); // left bottom back glm::vec2 t6(1-(0.5/TEXTURE_SIZE), 0.5/TEXTURE_SIZE); glm::vec3 p7(x-BLOCK_RENDER_SIZE, y+BLOCK_RENDER_SIZE, z-BLOCK_RENDER_SIZE); // left top back glm::vec2 t7(1-(0.5/TEXTURE_SIZE), 1-(0.5/TEXTURE_SIZE)); glm::vec3 p8(x+BLOCK_RENDER_SIZE, y+BLOCK_RENDER_SIZE, z-BLOCK_RENDER_SIZE); // right top back glm::vec2 t8(0.5/TEXTURE_SIZE, 1-(0.5/TEXTURE_SIZE)); int numCols = 16; int numRows = 16; double u = ((double)(ID % numCols) / (double)numCols); double v = ((double)(ID / numRows) / (double)numRows); double TILE_TEXTURE_SIZE = 16; glm::vec3 n1; if(activeStates[5] == false) { // Front Face Normal n1 = glm::vec3(0.0f, 0.0f, 1.0f); //Triangle 1 vertexData.push_back(p1); uvData.push_back(glm::vec2(t1.x/TILE_TEXTURE_SIZE + u, t1.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p2); uvData.push_back(glm::vec2(t2.x/TILE_TEXTURE_SIZE + u, t2.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p3); uvData.push_back(glm::vec2(t3.x/TILE_TEXTURE_SIZE + u, t3.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p1); uvData.push_back(glm::vec2(t1.x/TILE_TEXTURE_SIZE + u, t1.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p3); uvData.push_back(glm::vec2(t3.x/TILE_TEXTURE_SIZE + u, t3.y/TILE_TEXTURE_SIZE + v )); normalData.push_back(n1); vertexData.push_back(p4); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } if(activeStates[4] == false) { // Back n1 = glm::vec3(0.0f, 0.0f, -1.0f); //Triangle 1 vertexData.push_back(p5); uvData.push_back(glm::vec2(t5.x/TILE_TEXTURE_SIZE + u, t5.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p6); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p7); uvData.push_back(glm::vec2(t7.x/TILE_TEXTURE_SIZE + u, t7.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p5); uvData.push_back(glm::vec2(t5.x/TILE_TEXTURE_SIZE + u, t5.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p7); uvData.push_back(glm::vec2(t7.x/TILE_TEXTURE_SIZE + u, t7.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p8); uvData.push_back(glm::vec2(t8.x/TILE_TEXTURE_SIZE + u, t8.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } if(activeStates[1] == false) { // Right n1 = glm::vec3(1.0f, 0.0f, 0.0f); //Triangle 1 vertexData.push_back(p2); uvData.push_back(glm::vec2(t2.x/TILE_TEXTURE_SIZE + u, t2.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p5); uvData.push_back(glm::vec2(t5.x/TILE_TEXTURE_SIZE + u, t5.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p8); uvData.push_back(glm::vec2(t8.x/TILE_TEXTURE_SIZE + u, t8.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p2); uvData.push_back(glm::vec2(t2.x/TILE_TEXTURE_SIZE + u, t2.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p8); uvData.push_back(glm::vec2(t8.x/TILE_TEXTURE_SIZE + u, t8.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p3); uvData.push_back(glm::vec2(t3.x/TILE_TEXTURE_SIZE + u, t3.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } if(activeStates[0] == false) { // left n1 = glm::vec3(-1.0f, 0.0f, 0.0f); //Triangle 1 vertexData.push_back(p6); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p1); uvData.push_back(glm::vec2(t1.x/TILE_TEXTURE_SIZE + u, t1.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p4); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p6); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p4); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p7); uvData.push_back(glm::vec2(t7.x/TILE_TEXTURE_SIZE + u, t7.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } if(activeStates[3] == false) { // Top n1 = glm::vec3(0.0f, 1.0f, 0.0f); //Triangle 1 vertexData.push_back(p4); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p3); uvData.push_back(glm::vec2(t1.x/TILE_TEXTURE_SIZE + u, t1.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p8); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p4); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p8); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p7); uvData.push_back(glm::vec2(t7.x/TILE_TEXTURE_SIZE + u, t7.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } if(activeStates[2] == false) { // Bottom n1 = glm::vec3(0.0f, -1.0f, 0.0f); //Triangle 1 vertexData.push_back(p6); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p5); uvData.push_back(glm::vec2(t1.x/TILE_TEXTURE_SIZE + u, t1.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p2); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); //Triangle 2 vertexData.push_back(p6); uvData.push_back(glm::vec2(t6.x/TILE_TEXTURE_SIZE + u, t6.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p2); uvData.push_back(glm::vec2(t4.x/TILE_TEXTURE_SIZE + u, t4.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); vertexData.push_back(p1); uvData.push_back(glm::vec2(t7.x/TILE_TEXTURE_SIZE + u, t7.y/TILE_TEXTURE_SIZE + v)); normalData.push_back(n1); } /*glm::vec2 t1(0.5/256, 0.5/256); glm::vec2 t2(1-(0.5/256), 0.5/256); glm::vec2 t3(1-(0.5/256), 1-(0.5/256)); glm::vec2 t4(0.5/256, 1-(0.5/256)); glm::vec2 t5(0.5/256, 0.5/256); glm::vec2 t6(1-(0.5/256), 0.5/256); glm::vec2 t7(1-(0.5/256), 1-(0.5/256)); glm::vec2 t8(0.5/256, 1-(0.5/256)); */ /* for(int i = 0; i < vertexData.size(); i+=3) { // get the three vertices that make the faces glm::vec3 p1 = vertexData[i+0]; glm::vec3 p2 = vertexData[i+1]; glm::vec3 p3 = vertexData[i+2]; glm::vec3 v1 = p2 - p1; glm::vec3 v2 = p3 - p1; glm::vec3 normal = glm::cross( v1,v2 ); normal = glm::normalize(normal); normalData[i+0] = normal; normalData[i+1] = normal; normalData[i+2] = normal; } */ } GLuint Graphics3D::loadTexture(const char* theFileName) { ILuint imageID; GLuint textureID; ILboolean success; ILenum error; ilGenImages(1, &imageID); ilBindImage(imageID); success = ilLoadImage(theFileName); if (success) { ILinfo ImageInfo; iluGetImageInfo(&ImageInfo); if (ImageInfo.Origin == IL_ORIGIN_UPPER_LEFT) { // iluFlipImage(); } success = ilConvertImage(IL_RGB, IL_UNSIGNED_BYTE); if (!success) { error = ilGetError(); std::cout << "Image conversion failed - IL reports error: " << error << " - " << iluErrorString(error) << std::endl; } glGenTextures(1, &textureID); glBindTexture(GL_TEXTURE_2D, textureID); glTexImage2D(GL_TEXTURE_2D, // Type of texture 0, // Pyramid level (for mip-mapping) - 0 is the top level ilGetInteger(IL_IMAGE_BPP), // Image colour depth ilGetInteger(IL_IMAGE_WIDTH), // Image width ilGetInteger(IL_IMAGE_HEIGHT), // Image height 0, // Border width in pixels (can either be 1 or 0) ilGetInteger(IL_IMAGE_FORMAT), // Image format (i.e. RGB, RGBA, BGR etc.) GL_UNSIGNED_BYTE, // Image data type ilGetData()); // The actual image data itself /* glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); */ // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); if(GLEW_EXT_texture_filter_anisotropic) { GLfloat maximumAnisotropy; //get the value glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maximumAnisotropy); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, maximumAnisotropy); } glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR); // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); glGenerateMipmap(GL_TEXTURE_2D); } else { error = ilGetError(); std::cout << "Image load failed - IL reports error: " << error << " - " << iluErrorString(error) << std::endl; } ilDeleteImages(1, &imageID); std::cout << "Texture creation successful." << std::endl; return textureID; } </code></pre> <p>It seems the further away I am the more visible the lines are. So I tried removing mipmaps. This didn't help either. I'm at a loss on how to deal with this. Any ideas? This is the texture: <img src="https://i.stack.imgur.com/skUPS.png" alt="enter image description here"></p>

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