diff options
Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 48 |
1 files changed, 26 insertions, 22 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 4fd9247c498..c62ad6541b1 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -44,7 +44,7 @@ LIT - Light Coefficients dst.y = max(src.x, 0.0) - dst.z = (src.x > 0.0) ? pow(max(src.y, 0.0), clamp(src.w, -128.0, 128.0)) : 0.0 + dst.z = (src.x > 0.0) ? max(src.y, 0.0)^{clamp(src.w, -128.0, 128.0))} : 0.0 dst.w = 1.0 @@ -66,24 +66,24 @@ RSQ - Reciprocal Square Root .. math:: - dst.x = 1.0 / sqrt(abs(src.x)) + dst.x = 1.0 / \sqrt{abs(src.x)} - dst.y = 1.0 / sqrt(abs(src.x)) + dst.y = 1.0 / \sqrt{abs(src.x)} - dst.z = 1.0 / sqrt(abs(src.x)) + dst.z = 1.0 / \sqrt{abs(src.x)} - dst.w = 1.0 / sqrt(abs(src.x)) + dst.w = 1.0 / \sqrt{abs(src.x)} EXP - Approximate Exponential Base 2 .. math:: - dst.x = pow(2.0, \lfloor src.x\rfloor) + dst.x = 2^{\lfloor src.x\rfloor} dst.y = src.x - \lfloor src.x\rfloor - dst.z = pow(2.0, src.x) + dst.z = 2^{src.x} dst.w = 1.0 @@ -94,7 +94,7 @@ LOG - Approximate Logarithm Base 2 dst.x = \lfloor lg2(abs(src.x)))\rfloor - dst.y = abs(src.x) / pow(2.0, \lfloor lg2(abs(src.x))\rfloor ) + dst.y = abs(src.x) / 2^{\lfloor lg2(abs(src.x))\rfloor} dst.z = lg2(abs(src.x)) @@ -331,14 +331,17 @@ This is identical to ARL. dst.w = round(src.w) -1.3.10 EX2 - Exponential Base 2 +EX2 - Exponential Base 2 .. math:: - dst.x = pow(2.0, src.x) - dst.y = pow(2.0, src.x) - dst.z = pow(2.0, src.x) - dst.w = pow(2.0, src.x) + dst.x = 2^{src.x} + + dst.y = 2^{src.x} + + dst.z = 2^{src.x} + + dst.w = 2^{src.x} 1.3.11 LG2 - Logarithm Base 2 @@ -351,14 +354,17 @@ This is identical to ARL. dst.w = lg2(src.x) -1.3.12 POW - Power +POW - Power .. math:: - dst.x = pow(src0.x, src1.x) - dst.y = pow(src0.x, src1.x) - dst.z = pow(src0.x, src1.x) - dst.w = pow(src0.x, src1.x) + dst.x = src0.x^{src1.x} + + dst.y = src0.x^{src1.x} + + dst.z = src0.x^{src1.x} + + dst.w = src0.x^{src1.x} 1.3.15 XPD - Cross Product @@ -1016,7 +1022,7 @@ 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 - :math:`\lfloor x\rfloor` Floor of x. + :math:`\lfloor x\rfloor` Floor of `x`. lg2(x) Logarithm base 2 of x. @@ -1032,14 +1038,12 @@ Support for these opcodes indicated by a special pipe capability bit (TBD). pop() Pop from stack. - pow(x,y) Raise x to power of y. + :math:`x^y` `x` to the power `y`. push(x) Push x on stack. round(x) Round x. - sqrt(x) Square root of x. - trunc(x) Truncate x. |