文章中提到的Persistent-mapped Buffer就是<flags>设置为GL_MAP_PERSISTENT_BIT和GL_MAP_COHERENT_BIT的Immutable Buffer Storage,其减少驱动开销的办法是在创建Buffer Object之后就使用glMapBufferRange获得Map Pointer并存储起来,因为Map Pointer的持久有效性,程序
Applications should avoid commands that need synchronization between the treads, such as glGets or map/unmap (prefer persistent mapped, or BufferSubData). Bindless or Binding Less on NVIDIA drivers will also improve the performance in threaded shared OpenGL contexts. To ensure consistency of objects...
The requirements of these devices are small memory footprint, modest to medium processing power, and a need for a wide range of 3D rendering features including lighted, texture mapped, alpha blended, depth-buffered triangles, lines, and points. To span this broad range of devices, there are ...
如果每个字符的每组命令都包含在一个显示列表中,并且用 于描述纹理图像本身的命令(以及列表库的设置)包含在另 一个名为 TEX 的显示列表中,那么字符串“Texturemappedtex t!!”可以通过以下方式显示: glCallList(TEX); glCallLists("Texture mapped text!!",21,GL_BYTE); 这种方法的一个优点是,通过简单地使用适当...
Batch buffer updates to reduce the likelihood of orphaning. If buffers are updated at different frequencies, e.g. cloth simulation vertex positions and texture coordinates, consider splitting into separate buffers. When loading data from files, prefer mapped buffer updates (minimal copy overhead). ...
Then I’ve described usage of persistence mapped buffers. Should you use persistent mapped buffers? Here is the short summary about that: Pros Easy to use Obtained pointer can be passed around in the app In most cases gives performance boost for very frequent buffer updates (when data comes...
Learn more about the Android.Opengl.GLES30.GlFlushMappedBufferRange in the Android.Opengl namespace.
glBufferStorage和glBufferData的区别就是提供了更多的精细控制:GL_DYNAMIC_STORAGE_BIT提供了开启/关闭Client端更新Server端的功能;GL_MAP_READ_BIT和GL_MAP_WRITE_BIT提供了CPU读取/写入数据的功能;GL_MAP_PERSISTENT_BIT提供了当数据仍然在Mapped状态时也能够被读取/写入数据的功能;GL_MAP_COHERENT_BIT提供了服务端...
BUFFER OBJECTS 33 Name BUFFER_SIZE BUFFER_USAGE BUFFER_ACCESS_FLAGS BUFFER_MAPPED BUFFER_MAP_POINTER BUFFER_MAP_OFFSET BUFFER_MAP_LENGTH Type int64 enum int boolean void* int64 int64 Initial Value 0 STATIC_DRAW 0 FALSE NULL 0 0 Legal Values any non-negative integer STREAM_DRAW, STREAM_READ, ...
WebGL allows us to embed demos in a website, like thedemoforThe Compact YCoCg Frame Bufferby Pavlos Mavridis and Georgios Papaioannou. A demo gives readers a better understanding than a video alone, allows them to reproduce performance results on their hardware, and enables them to experiment ...