diff options
Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 80 |
1 files changed, 45 insertions, 35 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 1df0e98a411..4fd9247c498 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -14,13 +14,13 @@ ARL - Address Register Load .. math:: - dst.x = floor(src.x) + dst.x = \lfloor src.x\rfloor - dst.y = floor(src.y) + dst.y = \lfloor src.y\rfloor - dst.z = floor(src.z) + dst.z = \lfloor src.z\rfloor - dst.w = floor(src.w) + dst.w = \lfloor src.w\rfloor MOV - Move @@ -79,9 +79,9 @@ EXP - Approximate Exponential Base 2 .. math:: - dst.x = pow(2.0, floor(src.x)) + dst.x = pow(2.0, \lfloor src.x\rfloor) - dst.y = src.x - floor(src.x) + dst.y = src.x - \lfloor src.x\rfloor dst.z = pow(2.0, src.x) @@ -92,9 +92,9 @@ LOG - Approximate Logarithm Base 2 .. math:: - dst.x = floor(lg2(abs(src.x))) + dst.x = \lfloor lg2(abs(src.x)))\rfloor - dst.y = abs(src.x) / pow(2.0, floor(lg2(abs(src.x)))) + dst.y = abs(src.x) / pow(2.0, \lfloor lg2(abs(src.x))\rfloor ) dst.z = lg2(abs(src.x)) @@ -287,13 +287,13 @@ FRAC - Fraction .. math:: - dst.x = src.x - floor(src.x) + dst.x = src.x - \lfloor src.x\rfloor - dst.y = src.y - floor(src.y) + dst.y = src.y - \lfloor src.y\rfloor - dst.z = src.z - floor(src.z) + dst.z = src.z - \lfloor src.z\rfloor - dst.w = src.w - floor(src.w) + dst.w = src.w - \lfloor src.w\rfloor CLAMP - Clamp @@ -306,14 +306,19 @@ CLAMP - Clamp dst.w = clamp(src0.w, src1.w, src2.w) -1.3.8 FLR - Floor +FLR - Floor + +This is identical to ARL. .. math:: - dst.x = floor(src.x) - dst.y = floor(src.y) - dst.z = floor(src.z) - dst.w = floor(src.w) + dst.x = \lfloor src.x\rfloor + + dst.y = \lfloor src.y\rfloor + + dst.z = \lfloor src.z\rfloor + + dst.w = \lfloor src.w\rfloor 1.3.9 ROUND - Round @@ -395,14 +400,17 @@ CLAMP - Clamp dst.w = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src1.w -1.5.1 COS - Cosine +COS - Cosine .. math:: - dst.x = cos(src.x) - dst.y = cos(src.x) - dst.z = cos(src.x) - dst.w = cos(src.w) + dst.x = \cos{src.x} + + dst.y = \cos{src.x} + + dst.z = \cos{src.x} + + dst.w = \cos{src.w} 1.5.2 DDX - Derivative Relative To X @@ -495,14 +503,17 @@ Considered for removal. dst.w = (src0.w > src1.w) ? 1.0 : 0.0 -1.5.19 SIN - Sine +SIN - Sine .. math:: - dst.x = sin(src.x) - dst.y = sin(src.x) - dst.z = sin(src.x) - dst.w = sin(src.w) + dst.x = \sin{src.x} + + dst.y = \sin{src.x} + + dst.z = \sin{src.x} + + dst.w = \sin{src.w} 1.5.20 SLE - Set On Less Equal Than @@ -654,13 +665,16 @@ Considered for removal. endif -1.8.3 SCS - Sine Cosine +SCS - Sine Cosine .. math:: - dst.x = cos(src.x) - dst.y = sin(src.x) + dst.x = \cos{src.x} + + dst.y = \sin{src.x} + dst.z = 0.0 + dst.y = 1.0 @@ -1002,9 +1016,7 @@ Support for these opcodes indicated by a special pipe capability bit (TBD). clamp(x,y,z) Clamp x between y and z. (x < y) ? y : (x > z) ? z : x - cos(x) Cosine of x. - - floor(x) Floor of x. + :math:`\lfloor x\rfloor` Floor of x. lg2(x) Logarithm base 2 of x. @@ -1026,8 +1038,6 @@ Support for these opcodes indicated by a special pipe capability bit (TBD). round(x) Round x. - sin(x) Sine of x. - sqrt(x) Square root of x. trunc(x) Truncate x. |