Loop counter register (HLSL PS reference)

The only register in this bank is the current loop counter (aL) register. It automatically gets incremented in each execution of the loop - ps/endloop - ps block. So it can be used in the block for relative addressing if needed and is invalid to use it outside the loop.

Pixel shader versions 1_1 1_2 1_3 1_4 2_0 2_sw 2_x 3_0 3_sw
Loop Counter Register x x

 

Registers