Instructions - ps_2_0

This section contains reference information for the pixel shader version 2_0 instructions.

There are several types of pixel shader instructions, as shown in the table. Columns to the right mean the following:

Instruction slots - Number of instruction slots used by each instruction.
Setup - A pixel shader must have a version instruction and it must be the first instruction.
Arithmetic - These instructions provide the mathematical operations in a shader.
Macro-ops - These instructions combine arithmetic instructions to provide higher level functionality. The use of macro-ops is optional. It is preferable to use macro-ops, especially the matrix multiply instructions (m3x2, m3x3, m3x4, m4x3, m4x4), because they provide optimization opportunities to the underlying implementation.
Texture - These instructions are used to load and sample texture data, and to modify texture coordinates.
New - These instructions are new to this version.

Instruction Set

Name	Description	Instruction slots	Setup	Arithmetic	Macro-ops	Texture	New
abs	Absolute value	1			x		x
add	Add two vectors	1		x
cmp	Compare source to 0	1		x
crs	Cross product	2			x		x
dcl	Map a vertex element type to an input vertex register	0	x				x
dcl_textureType	Declare the texture coordinate dimension for a sampler register	0	x				x
def	Define constants	0	x
dp2add	2-D dot product and add	2		x			x
dp3	3-D dot product	1		x
dp4	4-D dot product	1		x
exp	Full precision 2^x	1			x		x
frc	Fractional component	1			x		x
log	Full precision log₂(x)	1			x		x
lrp	Linear interpolate	2			x		x
m3x2	3x2 multiply	2			x		x
m3x3	3x3 multiply	3			x		x
m3x4	3x4 multiply	4			x		x
m4x3	4x3 multiply	3			x		x
m4x4	4x4 multiply	4			x		x
mad	Multiply and add	1		x
max	Maximum	1			x
min	Minimum	1			x
mov	Move	1		x
mul	Multiply	1		x
nop	No operation	1		x
nrm	Normalize	3			x		x
pow	2^x	3			x		x
ps	Version	0	x				x
rcp	Reciprocal	1		x			x
rsq	Reciprocal square root	1		x			x
sincos	Sine and cosine	8			x		x
sub	Subtract	1		x
texkill	Kill pixel render	1(tex)				x
texld	Sample a texture	1 + 3CUBE				x	x
texldb	Texture sampling with level of detail (LOD) bias from w-component	1(tex)				x	x
texldp	Texture sampling with projective divide by w-component	1(tex)				x	x

Where:

tex - 1 texture instruction slot. However, if D3DPS20CAPS_NOTEXINSTRUCTIONLIMIT is set, this instruction is counted against the instruction ( non texture) count.
1 + 3CUBE means 1 + 3 if the texture is a cube map.
3 + 1CUBE means 3 + 1 if the texture is a cube map.