Description: Image sampling is the process of retrieving pixel data from an image based on texture coordinates. This process is fundamental in computer graphics as it allows textures to be applied to 3D models, thereby creating a more realistic and detailed appearance. Image sampling is commonly performed through shaders, which are programs executed on the GPU across various graphics APIs. Shaders use texture coordinates to access pixel data from an image, enabling efficient manipulation and rendering of textures. There are different sampling methods, such as bilinear and trilinear sampling, which determine how the colors of adjacent pixels are interpolated to smooth the appearance of textures. Additionally, image sampling can include advanced techniques like mipmapping, which optimizes performance by using different texture resolutions based on the distance of the object from the camera. In summary, image sampling is an essential component in 3D rendering, allowing developers to create visually appealing and detailed graphics in a wide range of applications and video games.
