• 01/27/2020
  • Public Content

Early Depth/Stencil (Z/STC)

Metric Name
Description
GPU / Rasterizer: Slice <N> Rasterizer Output Ready
Percentage of time that input was available for early depth/stencil evaluation from rasterization unit.
GPU / Rasterizer / Early Depth Test: Slice <N> Post-Early Z Pixel Data Ready
Percentage of time that early depth/stencil had pixel data ready for dispatch.
When
GPU / Rasterizer: Slice <N> Rasterizer Output Ready
is above 80 percent, early depth/stencil throughput is low. A drop between
GPU / Rasterizer: Slice <N> Rasterizer Output Ready
and
GPU / Rasterizer / Early Depth Test: Slice <N> Post-Early Z Pixel Data Ready
of > 10 percent indicates an early depth/stencil could be a hotspot. Evaluating other stencil operations, improving geometry (that is, reducing spatial overlap), and improving memory locality can all improve performance.
 

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804