Implemented that were not previously possible in Direct3D, and can improve Together, these features allow more complex data structures and algorithms to be
This allows groups of threads to share data,Īnd can reduce bandwidth requirements significantly. The last major feature of DirectCompute is thread group shared memory (referred toįrom now on as simply shared memory). Possible in a limited way previously by rendering point primitives, but this method was Perform writes to any location in a buffer (also known as scattered writes). The compute shader also allows unordered memory access, in particular the ability to One thread can process one or many data elements, and the application can controlĭirectly how many threads are used to perform the computation. Mapping between the data it is processing and the threads that are doing the processing. (which is executed once for each pixel), the compute shader doesn’t have to have a fixed Unlike a vertex shader (which is executed once for each input vertex), or a pixel shader Interacts with the other stages via graphics resources such as render targets, buffers and The compute shader is not attached specifically to any stage of the graphics pipeline, but Shaders, but with much more general purpose processing capabilities. Later) and forthcoming DirectX 11 GPU hardware.ĭirectCompute exposes the compute functionality of the GPU as a new type of shader the compute shader, which is very similar to the existing vertex, pixel and geometry
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It is supported on both current DirectX 10 hardware (NVIDIA GeForce 8 series and Without the need to use a separate compute API. Parallel computation abilities of today’s GPUs directly from within DirectX applications, The introduction of DirectCompute allows developers to take advantage of the massive Graphics applications such as photo and video editing.
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Utilizing graphics hardware on Windows platforms, both for video games and consumer The compute capabilities of the GPU, and provides the infrastructure thatĪt the same time, Microsoft’s DirectX APIs have matured into the standard interface for NVIDIA’s CUDA architecture has led the way in proving Purpose processor capable of improving the performance of a wide variety of parallelĪpplications beyond graphics. It is now widely accepted that the GPU has evolved into a highly capable general Optimizing DirectCompute on NVIDIA Hardware.