Backend Instructions

Name	Format	Backend Phase	Description
UVSW	UVSW dest, source	UVSW.writeOp (W0|W1), (S0|S1|S2|S3|S4|S5|_|0…255)	UVS data write. See below this table for code examples.
TESSW	TESSW dest, source	TESSW.tessOp (W0|W1), immediateAddress	Tessellator data write.
ATST	ATST dest, sourceRef, sourceData, sourceStateWord	ATST{.IFB} (P0|_), S0, S1, S2	Alpha Test
DEPTHF	DEPTHF dest	DEPTHF W0	Depth Feedback
FITR	FITR dest, sourceDRC, sourceCoeffPtr, sourceCount	FITR.mode{.SAT} S3, (DRC0|DRC1), S0, (1…maxItrCount)	Iterate value(s). See below this table for code examples.
FITRP	FITRP dest, sourceDRC, sourceCoeffPtr, sourceWCoeffPtr, sourceCount	FITRP.mode{.SAT} S3, (DRC0|DRC1), S0, S2, (1…maxItrCount)	All values should be multiplied by 1/W
IDF	IDF sourceDRC, sourceSelect	IDF{.DIRECT} (DRC0|DRC1), (S0|S1|S2|S3|S4|S5)	Issue data fence through memory subsystem. The fence is issued for the first valid instance in a task, in the following order: {16, …, 31, 0, …, 15}.
LD	LD dest, sourceDRC, sourceBurstLen, sourceAddress	LD{.DIRECT} S3, (DRC0|DRC1), (S0|S1|S2|S3|S4|S5|1…16), (S0|S1|S2|S3|S4|S5)	Loads data from memory into supplied destination
ST	ST sourceData, sourceDataSize, sourceDRC, sourceBurstLen, sourceAddress, sourceCoverageMask	ST{.TILED} {.DIRECT} (S0|S1|S2|S3|S4|S5), (0…2), (DRC0|DRC1), (S0|S1|S2|S3|S4|S5|1…16), (S0|S1|S2|S3|S4|S5), (S0|S1|S2|S3|S4|S5|_)	Stores data from supplied source to memory.
ST.TEXELMODE	ST.TEXELMODE sourceData, source, sourceDRC	ST.TEXELMODE S2, W1, (DRC0|DRC1)	Stores data to memory, texel mode
SMP (SMP1D SMP2D SMP3D)	SMP1D sourceDRC, sourceTextureState, sourceData, sourceSamplerState, sourceSharedLOD, sourceDestPtr, chan	SMP1D{.PROJ}{.FCNORM}{.NNCOORDS}{.LODM}{.PPLOD}{.TAO}{.SOO}{.SNO}{.WRT}{.SBMode}{.ARRAY}{.INTEGER}{.COMPARISON}{.SCHEDSWAP}{.DIRECT} (DRC0|DRC1), S0, S1, S2, (S3|_), S4, chan	Sample Texture. One, two or three dimensions. See below this table for code examples.
ATOM	ATOM.opCode sourceDestSelect, sourceDRC, sourceSelect	ATOM.opCode {.DIRECT} (S0|S1|S2|S3|S4|S5), (DRC0|DRC1), (S0|S1|S2|S3|S4|S5)	Loads data from memory which is operated on with supplied data and operation type is written back to memory and supplied destination

UVSW code example:

void main()
{
  gl_Position = inVertex;
}

0 : mov ft0, vi3
    mov ft0.e0.e1.e2.e3,
    ft0
    uvsw.write ft0, 3;

FITR code example:

in vec2 textureCoordinate;
out vec4 fragColor;

void main()
{
  fragColor = vec4(textureCoordinate,  0.0, 1.0);
}

0 : fitr.pixel r0,
    drc0, cf4,
    cf0, 2;

SMP code example:

in vec2 textureCoordinate;
out vec4 fragColor;

void main()
{
    fragColor =  texelFetch(sampler,ivec2(gl_FragCoord.xy), 0);
}

3    : smp2d.fcnorm.replace.integer drc0, sh4, r1, sh0, sh11, r0, 4;