GRAPHINE | Top Q&A

Stream textures

Stream textures

Structural threading system. 3D render screenshot showing aircraft and terrain with high resolution textures

Load textures

Using high-resolution textures or multiple unique textures in a 3D scene has a big impact on the quality, detail, and sharpness of the final rendered image. To create these images, real-time 3D engines need to load texture data into video memory on the graphics card or game console. Read: what is texture streaming Textures are read from disk (hard drive or Blu-ray disc) and copied to video memory as needed. The simple approach, which has been used for many years, is to load all texture data at the start of an application or game.This approach has two major drawbacks

• First, the user needs to wait for the download to finish. This can sometimes take a few minutes.
• Second, the amount of texture data that can be used in a 3D scene is limited in the amount of video memory available.

Read more: Walmart Grocery Store Closing Time To get around this last limitation, the developers have broken down their game into separately loaded levels. However, similar problems arise with these levels. Due to memory limitations, increasing the size of the virtual environment results in less texture density, or in other words, more opaque textures.

Stream textures

Texture streaming is the process of continuously loading texture data in the background while running an application or playing a game. Streaming is hidden from the end user (no loading screen). One texture online The system allows for more textures to be used in a seemingly continuous 3D environment than the number that fits into video memory. The better system divides the 3D environment into several separate areas. The system will detect when to load data for these zones based on a set of parameters or using a manually set trigger point. While this allows for large open world games, some pieces of this region data need to be loaded into video memory at a given time. This again limits the number of textures or texture resolutions that can be used. The smaller the data blocks, the more that memory can be optimized to increase texture density while keeping memory usage constant.Mipmap . Streaming SystemRead more: the least common multiple of the 5 and 7Mipmap streaming systems that automatically load individual texture mipmaps based on the virtual camera’s distance from a visible object. Keeping only the mipmaps in memory that is really necessary allows to minimize memory usage while having many objects on the remote side. However, this approach can lead to multiple disk searches at a given time. The mipmap streaming also can’t handle high resolution textures (8Kx8K or higher). Such systems also struggle with many subjects close to the camera. Let’s say an object has three 8K textures (BC5/7 compression), suddenly, when the object gets close enough, 192MB of data needs to be read from disk and uploaded to video memory. This results in long locks, blurred textures and artifacts appearing.

Brick-based texture streaming

Finally, the most advanced layer of texture transfer system subdivides each mipmap into small texture tiles. Granite SDK is a tile based texture streaming system. The system will automatically load only the texture cells that are actually visible. In many cases, only parts of the mipmap are displayed at a given time.

• This allows the system to spread large mips loads over multiple frames.
• It also avoids loading data that is never needed, thus minimizing strain on disk.

Combining tile-based streaming with virtual textures Granite combines a tile-based streaming system with virtual texture generation techniques to minimize the amount of video memory required. Tiles are loaded into the GPU cache instead of regular texture resources. As a result, memory usage is completely separate from the number of textures in the scene and the resolution of these textures. For example, increasing all textures from 2K to 4K in a scene would require the same amount of memory. Memory usage depends mainly on output screen resolution and number of channels per texel. These system properties allow the creation of very dense 3D scenes with many unique textures or high texel density per object. It also allows importing very large textures up to 262,144 x 262,144 pixels. Read more: What causes emotional attraction in a man

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