Temporary Register

Pixel shader input temporary registers are used to hold intermediate results.

Syntax

Temporary Register 

Remarks

Syntax

no declaration is required

Remarks

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

• There are 12 pixel-shader temporary registers: r0 to r11.
• These registers are used for storing intermediate results during computations.
• If a temporary register uses components that are not defined in previous code, shader validation will fail.
• These are at least floating-point precision.
• A maximum of three can be used in a single instruction.

Minimum operating system	Windows 98

Instruction Information

Minimum operating systems	Windows 98