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gallium/docs: line up some of the equations

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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Ilia Mirkin 2014-03-31 18:19:18 -04:00
parent 05d0223da3
commit b4cf180695
1 changed files with 16 additions and 28 deletions
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44
src/gallium/docs/source/tgsi.rst
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@ -74,13 +74,10 @@ used.
.. math::
dst.x = 1
dst.y = max(src.x, 0)
dst.z = (src.x > 0) ? max(src.y, 0)^{clamp(src.w, -128, 128))} : 0
dst.w = 1
dst.x &= 1 \\
dst.y &= max(src.x, 0) \\
dst.z &= (src.x > 0) ? max(src.y, 0)^{clamp(src.w, -128, 128))} : 0 \\
dst.w &= 1
.. opcode:: RCP - Reciprocal
@ -114,26 +111,20 @@ This instruction replicates its result. The results are undefined for src < 0.
.. math::
dst.x = 2^{\lfloor src.x\rfloor}
dst.y = src.x - \lfloor src.x\rfloor
dst.z = 2^{src.x}
dst.w = 1
dst.x &= 2^{\lfloor src.x\rfloor} \\
dst.y &= src.x - \lfloor src.x\rfloor \\
dst.z &= 2^{src.x} \\
dst.w &= 1
.. opcode:: LOG - Approximate Logarithm Base 2
.. math::
dst.x = \lfloor\log_2{|src.x|}\rfloor
dst.y = \frac{|src.x|}{2^{\lfloor\log_2{|src.x|}\rfloor}}
dst.z = \log_2{|src.x|}
dst.w = 1
dst.x &= \lfloor\log_2{|src.x|}\rfloor \\
dst.y &= \frac{|src.x|}{2^{\lfloor\log_2{|src.x|}\rfloor}} \\
dst.z &= \log_2{|src.x|} \\
dst.w &= 1
.. opcode:: MUL - Multiply
@ -184,13 +175,10 @@ This instruction replicates its result.
.. math::
dst.x = 1
dst.y = src0.y \times src1.y
dst.z = src0.z
dst.w = src1.w
dst.x &= 1\\
dst.y &= src0.y \times src1.y\\
dst.z &= src0.z\\
dst.w &= src1.w
.. opcode:: MIN - Minimum