Getting maximum possible texture size and GPU memory available
Getting maximum possible texture size Material is based on OpenGL Wiki page: https://www.khronos.org/opengl/wiki/Textures_-_more int max_tex_size; glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size); cout << "GPU maximal 2D texture size: " << max_tex_size << endl; For 3D texture: GL_MAX_3D_TEXTURE_SIZE For cubemap texture:GL_MAX_CUBE_MAP_TEXTURE_SIZE Getting total and available GPU memory for NVidia cards Material is based on the article How to Know the Graphics Memory Size and Usage In OpenGL by JEGX: https://www.geeks3d.com/20100531/programming-tips-how-to-know-the-graphics-memory-size-and-usage-in-opengl/ #define GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX 0x9048 #define GL_GPU_MEM_INFO_CURRENT_AVAILABLE_MEM_NVX 0x9049 GLint total_mem_kb = 0; glGetIntegerv(GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX, &total_mem_kb); cout << "Nvidia GPU total memory: " << total_mem_kb / 1024