diff options
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 389 |
1 files changed, 231 insertions, 158 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 69c29e77d13..de27d8a0050 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -40,13 +40,13 @@ LIT - Light Coefficients .. math:: - dst.x = 1.0 + dst.x = 1 - dst.y = max(src.x, 0.0) + dst.y = max(src.x, 0) - dst.z = (src.x > 0.0) ? max(src.y, 0.0)^{clamp(src.w, -128.0, 128.0))} : 0.0 + dst.z = (src.x > 0) ? max(src.y, 0)^{clamp(src.w, -128, 128))} : 0 - dst.w = 1.0 + dst.w = 1 RCP - Reciprocal @@ -85,7 +85,7 @@ EXP - Approximate Exponential Base 2 dst.z = 2^{src.x} - dst.w = 1.0 + dst.w = 1 LOG - Approximate Logarithm Base 2 @@ -157,7 +157,7 @@ DST - Distance Vector .. math:: - dst.x = 1.0 + dst.x = 1 dst.y = src0.y \times src1.y @@ -196,26 +196,26 @@ SLT - Set On Less Than .. math:: - dst.x = (src0.x < src1.x) ? 1.0 : 0.0 + dst.x = (src0.x < src1.x) ? 1 : 0 - dst.y = (src0.y < src1.y) ? 1.0 : 0.0 + dst.y = (src0.y < src1.y) ? 1 : 0 - dst.z = (src0.z < src1.z) ? 1.0 : 0.0 + dst.z = (src0.z < src1.z) ? 1 : 0 - dst.w = (src0.w < src1.w) ? 1.0 : 0.0 + dst.w = (src0.w < src1.w) ? 1 : 0 SGE - Set On Greater Equal Than .. math:: - dst.x = (src0.x >= src1.x) ? 1.0 : 0.0 + dst.x = (src0.x >= src1.x) ? 1 : 0 - dst.y = (src0.y >= src1.y) ? 1.0 : 0.0 + dst.y = (src0.y >= src1.y) ? 1 : 0 - dst.z = (src0.z >= src1.z) ? 1.0 : 0.0 + dst.z = (src0.z >= src1.z) ? 1 : 0 - dst.w = (src0.w >= src1.w) ? 1.0 : 0.0 + dst.w = (src0.w >= src1.w) ? 1 : 0 MAD - Multiply And Add @@ -301,8 +301,11 @@ CLAMP - Clamp .. math:: dst.x = clamp(src0.x, src1.x, src2.x) + dst.y = clamp(src0.y, src1.y, src2.y) + dst.z = clamp(src0.z, src1.z, src2.z) + dst.w = clamp(src0.w, src1.w, src2.w) @@ -321,13 +324,16 @@ This is identical to ARL. dst.w = \lfloor src.w\rfloor -1.3.9 ROUND - Round +ROUND - Round .. math:: dst.x = round(src.x) + dst.y = round(src.y) + dst.z = round(src.z) + dst.w = round(src.w) @@ -369,14 +375,17 @@ POW - Power dst.w = src0.x^{src1.x} -1.3.15 XPD - Cross Product +XPD - Cross Product .. math:: dst.x = src0.y \times src1.z - src1.y \times src0.z + dst.y = src0.z \times src1.x - src1.z \times src0.x + dst.z = src0.x \times src1.y - src1.x \times src0.y - dst.w = 1.0 + + dst.w = 1 ABS - Absolute @@ -392,23 +401,31 @@ ABS - Absolute dst.w = |src.w| -1.4.2 RCC - Reciprocal Clamped +RCC - Reciprocal Clamped + +XXX cleanup on aisle three .. math:: - dst.x = (1.0 / src.x) > 0.0 ? clamp(1.0 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1.0 / src.x, -1.884467e+019, -5.42101e-020) - dst.y = (1.0 / src.x) > 0.0 ? clamp(1.0 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1.0 / src.x, -1.884467e+019, -5.42101e-020) - dst.z = (1.0 / src.x) > 0.0 ? clamp(1.0 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1.0 / src.x, -1.884467e+019, -5.42101e-020) - dst.w = (1.0 / src.x) > 0.0 ? clamp(1.0 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1.0 / src.x, -1.884467e+019, -5.42101e-020) + dst.x = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + + dst.y = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + + dst.z = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + + dst.w = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) -1.4.3 DPH - Homogeneous Dot Product +DPH - Homogeneous Dot Product .. math:: dst.x = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + dst.y = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + dst.z = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + dst.w = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w @@ -425,94 +442,101 @@ COS - Cosine dst.w = \cos{src.w} -1.5.2 DDX - Derivative Relative To X +DDX - Derivative Relative To X .. math:: dst.x = partialx(src.x) + dst.y = partialx(src.y) + dst.z = partialx(src.z) + dst.w = partialx(src.w) -1.5.3 DDY - Derivative Relative To Y +DDY - Derivative Relative To Y .. math:: dst.x = partialy(src.x) + dst.y = partialy(src.y) + dst.z = partialy(src.z) - dst.w = partialy(src.w) + dst.w = partialy(src.w) -1.5.7 KILP - Predicated Discard -.. math:: +KILP - Predicated Discard discard -1.5.10 PK2H - Pack Two 16-bit Floats +PK2H - Pack Two 16-bit Floats TBD -1.5.11 PK2US - Pack Two Unsigned 16-bit Scalars +PK2US - Pack Two Unsigned 16-bit Scalars TBD -1.5.12 PK4B - Pack Four Signed 8-bit Scalars +PK4B - Pack Four Signed 8-bit Scalars TBD -1.5.13 PK4UB - Pack Four Unsigned 8-bit Scalars +PK4UB - Pack Four Unsigned 8-bit Scalars TBD -1.5.15 RFL - Reflection Vector +RFL - Reflection Vector .. math:: - dst.x = 2.0 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.x - src1.x - dst.y = 2.0 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.y - src1.y - dst.z = 2.0 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.z - src1.z - dst.w = 1.0 + dst.x = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.x - src1.x + + dst.y = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.y - src1.y + + dst.z = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.z - src1.z + + dst.w = 1 Considered for removal. -1.5.16 SEQ - Set On Equal +SEQ - Set On Equal .. math:: - dst.x = (src0.x == src1.x) ? 1.0 : 0.0 - dst.y = (src0.y == src1.y) ? 1.0 : 0.0 - dst.z = (src0.z == src1.z) ? 1.0 : 0.0 - dst.w = (src0.w == src1.w) ? 1.0 : 0.0 + dst.x = (src0.x == src1.x) ? 1 : 0 + dst.y = (src0.y == src1.y) ? 1 : 0 + dst.z = (src0.z == src1.z) ? 1 : 0 + dst.w = (src0.w == src1.w) ? 1 : 0 -1.5.17 SFL - Set On False +SFL - Set On False .. math:: - dst.x = 0.0 - dst.y = 0.0 - dst.z = 0.0 - dst.w = 0.0 + dst.x = 0 + dst.y = 0 + dst.z = 0 + dst.w = 0 Considered for removal. -1.5.18 SGT - Set On Greater Than +SGT - Set On Greater Than .. math:: - dst.x = (src0.x > src1.x) ? 1.0 : 0.0 - dst.y = (src0.y > src1.y) ? 1.0 : 0.0 - dst.z = (src0.z > src1.z) ? 1.0 : 0.0 - dst.w = (src0.w > src1.w) ? 1.0 : 0.0 + dst.x = (src0.x > src1.x) ? 1 : 0 + dst.y = (src0.y > src1.y) ? 1 : 0 + dst.z = (src0.z > src1.z) ? 1 : 0 + dst.w = (src0.w > src1.w) ? 1 : 0 SIN - Sine @@ -528,76 +552,76 @@ SIN - Sine dst.w = \sin{src.w} -1.5.20 SLE - Set On Less Equal Than +SLE - Set On Less Equal Than .. math:: - dst.x = (src0.x <= src1.x) ? 1.0 : 0.0 - dst.y = (src0.y <= src1.y) ? 1.0 : 0.0 - dst.z = (src0.z <= src1.z) ? 1.0 : 0.0 - dst.w = (src0.w <= src1.w) ? 1.0 : 0.0 + dst.x = (src0.x <= src1.x) ? 1 : 0 + dst.y = (src0.y <= src1.y) ? 1 : 0 + dst.z = (src0.z <= src1.z) ? 1 : 0 + dst.w = (src0.w <= src1.w) ? 1 : 0 -1.5.21 SNE - Set On Not Equal +SNE - Set On Not Equal .. math:: - dst.x = (src0.x != src1.x) ? 1.0 : 0.0 - dst.y = (src0.y != src1.y) ? 1.0 : 0.0 - dst.z = (src0.z != src1.z) ? 1.0 : 0.0 - dst.w = (src0.w != src1.w) ? 1.0 : 0.0 + dst.x = (src0.x != src1.x) ? 1 : 0 + dst.y = (src0.y != src1.y) ? 1 : 0 + dst.z = (src0.z != src1.z) ? 1 : 0 + dst.w = (src0.w != src1.w) ? 1 : 0 -1.5.22 STR - Set On True +STR - Set On True .. math:: - dst.x = 1.0 - dst.y = 1.0 - dst.z = 1.0 - dst.w = 1.0 + dst.x = 1 + dst.y = 1 + dst.z = 1 + dst.w = 1 -1.5.23 TEX - Texture Lookup +TEX - Texture Lookup TBD -1.5.24 TXD - Texture Lookup with Derivatives +TXD - Texture Lookup with Derivatives TBD -1.5.25 TXP - Projective Texture Lookup +TXP - Projective Texture Lookup TBD -1.5.26 UP2H - Unpack Two 16-Bit Floats +UP2H - Unpack Two 16-Bit Floats TBD Considered for removal. -1.5.27 UP2US - Unpack Two Unsigned 16-Bit Scalars +UP2US - Unpack Two Unsigned 16-Bit Scalars TBD Considered for removal. -1.5.28 UP4B - Unpack Four Signed 8-Bit Values +UP4B - Unpack Four Signed 8-Bit Values TBD Considered for removal. -1.5.29 UP4UB - Unpack Four Unsigned 8-Bit Scalars +UP4UB - Unpack Four Unsigned 8-Bit Scalars TBD Considered for removal. -1.5.30 X2D - 2D Coordinate Transformation +X2D - 2D Coordinate Transformation .. math:: @@ -609,70 +633,79 @@ SIN - Sine Considered for removal. -1.6 GL_NV_vertex_program2 +GL_NV_vertex_program2 -------------------------- -1.6.1 ARA - Address Register Add +ARA - Address Register Add TBD Considered for removal. -1.6.2 ARR - Address Register Load With Round +ARR - Address Register Load With Round .. math:: dst.x = round(src.x) + dst.y = round(src.y) + dst.z = round(src.z) + dst.w = round(src.w) -1.6.3 BRA - Branch +BRA - Branch pc = target Considered for removal. -1.6.4 CAL - Subroutine Call +CAL - Subroutine Call push(pc) pc = target -1.6.5 RET - Subroutine Call Return +RET - Subroutine Call Return pc = pop() Potential restrictions: \times Only occurs at end of function. -1.6.6 SSG - Set Sign +SSG - Set Sign .. math:: - dst.x = (src.x > 0.0) ? 1.0 : (src.x < 0.0) ? -1.0 : 0.0 - dst.y = (src.y > 0.0) ? 1.0 : (src.y < 0.0) ? -1.0 : 0.0 - dst.z = (src.z > 0.0) ? 1.0 : (src.z < 0.0) ? -1.0 : 0.0 - dst.w = (src.w > 0.0) ? 1.0 : (src.w < 0.0) ? -1.0 : 0.0 + dst.x = (src.x > 0) ? 1 : (src.x < 0) ? -1 : 0 + + dst.y = (src.y > 0) ? 1 : (src.y < 0) ? -1 : 0 + dst.z = (src.z > 0) ? 1 : (src.z < 0) ? -1 : 0 -1.8.1 CMP - Compare + dst.w = (src.w > 0) ? 1 : (src.w < 0) ? -1 : 0 + + +CMP - Compare .. math:: - dst.x = (src0.x < 0.0) ? src1.x : src2.x - dst.y = (src0.y < 0.0) ? src1.y : src2.y - dst.z = (src0.z < 0.0) ? src1.z : src2.z - dst.w = (src0.w < 0.0) ? src1.w : src2.w + dst.x = (src0.x < 0) ? src1.x : src2.x + + dst.y = (src0.y < 0) ? src1.y : src2.y + + dst.z = (src0.z < 0) ? src1.z : src2.z + + dst.w = (src0.w < 0) ? src1.w : src2.w -1.8.2 KIL - Conditional Discard +KIL - Conditional Discard .. math:: - if (src.x < 0.0 || src.y < 0.0 || src.z < 0.0 || src.w < 0.0) + if (src.x < 0 || src.y < 0 || src.z < 0 || src.w < 0) discard endif @@ -685,62 +718,71 @@ SCS - Sine Cosine dst.y = \sin{src.x} - dst.z = 0.0 + dst.z = 0 - dst.y = 1.0 + dst.y = 1 -1.8.4 TXB - Texture Lookup With Bias +TXB - Texture Lookup With Bias TBD -1.9.1 NRM - 3-component Vector Normalise +NRM - 3-component Vector Normalise .. math:: dst.x = src.x / (src.x \times src.x + src.y \times src.y + src.z \times src.z) + dst.y = src.y / (src.x \times src.x + src.y \times src.y + src.z \times src.z) + dst.z = src.z / (src.x \times src.x + src.y \times src.y + src.z \times src.z) - dst.w = 1.0 + + dst.w = 1 -1.9.2 DIV - Divide +DIV - Divide .. math:: - dst.x = src0.x / src1.x - dst.y = src0.y / src1.y - dst.z = src0.z / src1.z - dst.w = src0.w / src1.w + dst.x = \frac{src0.x}{src1.x} + + dst.y = \frac{src0.y}{src1.y} + + dst.z = \frac{src0.z}{src1.z} + dst.w = \frac{src0.w}{src1.w} -1.9.3 DP2 - 2-component Dot Product + +DP2 - 2-component Dot Product .. math:: dst.x = src0.x \times src1.x + src0.y \times src1.y + dst.y = src0.x \times src1.x + src0.y \times src1.y + dst.z = src0.x \times src1.x + src0.y \times src1.y + dst.w = src0.x \times src1.x + src0.y \times src1.y -1.9.5 TXL - Texture Lookup With LOD +TXL - Texture Lookup With LOD TBD -1.9.6 BRK - Break +BRK - Break TBD -1.9.7 IF - If +IF - If TBD -1.9.8 BGNFOR - Begin a For-Loop +BGNFOR - Begin a For-Loop dst.x = floor(src.x) dst.y = floor(src.y) @@ -756,22 +798,22 @@ SCS - Sine Cosine Considered for cleanup / removal. -1.9.9 REP - Repeat +REP - Repeat TBD -1.9.10 ELSE - Else +ELSE - Else TBD -1.9.11 ENDIF - End If +ENDIF - End If TBD -1.9.12 ENDFOR - End a For-Loop +ENDFOR - End a For-Loop dst.x = dst.x + dst.z dst.y = dst.y - 1.0 @@ -784,12 +826,12 @@ SCS - Sine Cosine Considered for cleanup / removal. -1.9.13 ENDREP - End Repeat +ENDREP - End Repeat TBD -1.10.1 PUSHA - Push Address Register On Stack +PUSHA - Push Address Register On Stack push(src.x) push(src.y) @@ -798,7 +840,7 @@ SCS - Sine Cosine Considered for cleanup / removal. -1.10.2 POPA - Pop Address Register From Stack +POPA - Pop Address Register From Stack dst.w = pop() dst.z = pop() @@ -808,7 +850,7 @@ SCS - Sine Cosine Considered for cleanup / removal. -1.11 GL_NV_gpu_program4 +GL_NV_gpu_program4 ------------------------ Support for these opcodes indicated by a special pipe capability bit (TBD). @@ -826,93 +868,122 @@ CEIL - Ceiling dst.w = \lceil src.w\rceil -1.11.2 I2F - Integer To Float +I2F - Integer To Float .. math:: dst.x = (float) src.x + dst.y = (float) src.y + dst.z = (float) src.z + dst.w = (float) src.w -1.11.3 NOT - Bitwise Not +NOT - Bitwise Not .. math:: dst.x = ~src.x + dst.y = ~src.y + dst.z = ~src.z + dst.w = ~src.w -1.11.4 TRUNC - Truncate +TRUNC - Truncate + +XXX how is this different from floor? .. math:: dst.x = trunc(src.x) + dst.y = trunc(src.y) + dst.z = trunc(src.z) + dst.w = trunc(src.w) -1.11.5 SHL - Shift Left +SHL - Shift Left .. math:: dst.x = src0.x << src1.x + dst.y = src0.y << src1.x + dst.z = src0.z << src1.x + dst.w = src0.w << src1.x -1.11.6 SHR - Shift Right +SHR - Shift Right .. math:: dst.x = src0.x >> src1.x + dst.y = src0.y >> src1.x + dst.z = src0.z >> src1.x + dst.w = src0.w >> src1.x -1.11.7 AND - Bitwise And +AND - Bitwise And .. math:: dst.x = src0.x & src1.x + dst.y = src0.y & src1.y + dst.z = src0.z & src1.z + dst.w = src0.w & src1.w -1.11.8 OR - Bitwise Or +OR - Bitwise Or .. math:: dst.x = src0.x | src1.x + dst.y = src0.y | src1.y + dst.z = src0.z | src1.z + dst.w = src0.w | src1.w -1.11.9 MOD - Modulus +MOD - Modulus .. math:: - dst.x = src0.x % src1.x - dst.y = src0.y % src1.y - dst.z = src0.z % src1.z - dst.w = src0.w % src1.w + dst.x = src0.x \bmod src1.x + + dst.y = src0.y \bmod src1.y + + dst.z = src0.z \bmod src1.z + dst.w = src0.w \bmod src1.w -1.11.10 XOR - Bitwise Xor + +XOR - Bitwise Xor .. math:: dst.x = src0.x ^ src1.x + dst.y = src0.y ^ src1.y + dst.z = src0.z ^ src1.z + dst.w = src0.w ^ src1.w @@ -929,100 +1000,101 @@ SAD - Sum Of Absolute Differences dst.w = |src0.w - src1.w| + src2.w -1.11.12 TXF - Texel Fetch +TXF - Texel Fetch TBD -1.11.13 TXQ - Texture Size Query +TXQ - Texture Size Query TBD -1.11.14 CONT - Continue +CONT - Continue TBD -1.12 GL_NV_geometry_program4 +GL_NV_geometry_program4 ----------------------------- -1.12.1 EMIT - Emit +EMIT - Emit TBD -1.12.2 ENDPRIM - End Primitive +ENDPRIM - End Primitive TBD -1.13 GLSL +GLSL ---------- -1.13.1 BGNLOOP - Begin a Loop +BGNLOOP - Begin a Loop TBD -1.13.2 BGNSUB - Begin Subroutine +BGNSUB - Begin Subroutine TBD -1.13.3 ENDLOOP - End a Loop +ENDLOOP - End a Loop TBD -1.13.4 ENDSUB - End Subroutine +ENDSUB - End Subroutine TBD -1.13.10 NOP - No Operation +NOP - No Operation - Do nothing. + Do nothing. +NRM4 - 4-component Vector Normalise +.. math:: -1.16.7 NRM4 - 4-component Vector Normalise + dst.x = \frac{src.x}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} -.. math:: + dst.y = \frac{src.y}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} + + dst.z = \frac{src.z}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} - dst.x = src.x / (src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w) - dst.y = src.y / (src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w) - dst.z = src.z / (src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w) - dst.w = src.w / (src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w) + dst.w = \frac{src.w}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} -1.17 ps_2_x +ps_2_x ------------ -1.17.2 CALLNZ - Subroutine Call If Not Zero +CALLNZ - Subroutine Call If Not Zero TBD -1.17.3 IFC - If +IFC - If TBD -1.17.5 BREAKC - Break Conditional +BREAKC - Break Conditional TBD -2 Explanation of symbols used +Explanation of symbols used ============================== -2.1 Functions +Functions -------------- @@ -1058,7 +1130,7 @@ SAD - Sum Of Absolute Differences trunc(x) Truncate x. -2.2 Keywords +Keywords ------------- @@ -1081,11 +1153,11 @@ SAD - Sum Of Absolute Differences target Label of target instruction. -3 Other tokens +Other tokens =============== -3.1 Declaration Semantic +Declaration Semantic ------------------------- @@ -1106,7 +1178,8 @@ SAD - Sum Of Absolute Differences sections. -3.1.1 FACE +FACE +^^^^ Valid only in a fragment shader INPUT declaration. |