1.2.6 CND0 - Condition Zero
- dst.x = (src2.x >= 0.0) ? src0.x : src1.x
- dst.y = (src2.y >= 0.0) ? src0.y : src1.y
- dst.z = (src2.z >= 0.0) ? src0.z : src1.z
- dst.w = (src2.w >= 0.0) ? src0.w : src1.w
-
+ Removed. Use (CMP src2, src1, src0) instead.
1.2.7 DOT2ADD - 2-component Dot Product And Add
dst.w = round(src.w)
-1.3.10 EXPBASE2 - Exponent Base 2
+1.3.10 EXPBASE2 - Exponential Base 2
dst.x = pow(2.0, src.x)
dst.y = pow(2.0, src.x)
1.5.7 KILP - Predicated Discard
- if (cc.x || cc.y || cc.z || cc.w)
- discard
- endif
+ discard
1.5.8 LG2 - Logarithm Base 2
1.6.3 BRA - Branch
- TBD
+ pc = target
1.6.4 CAL - Subroutine Call
TBD
-1.9.8 LOOP - Loop
+1.9.8 BGNFOR - Begin a For-Loop
- TBD
+ dst.x = floor(src.x)
+ dst.y = floor(src.y)
+ dst.z = floor(src.z)
+
+ if (dst.y <= 0)
+ pc = [matching ENDFOR] + 1
+ endif
+
+ Note: The destination must be a loop register.
+ The source must be a constant register.
1.9.9 REP - Repeat
TBD
-1.9.12 ENDLOOP - End Loop
+1.9.12 ENDFOR - End a For-Loop
- TBD
+ dst.x = dst.x + dst.z
+ dst.y = dst.y - 1.0
+
+ if (dst.y > 0)
+ pc = [matching BGNFOR instruction] + 1
+ endif
+
+ Note: The destination must be a loop register.
1.9.13 ENDREP - End Repeat
----------
-1.13.1 BGNLOOP2 - Begin Loop
+1.13.1 BGNLOOP - Begin a Loop
TBD
TBD
-1.13.3 ENDLOOP2 - End Loop
+1.13.3 ENDLOOP - End a Loop
TBD
1.18.1 EXPP - Approximate Exponential Base 2
- Alias for EXP.
+ Use EXP. See also 1.19.3.
1.18.2 LOGP - Logarithm Base 2
- Alias for LG2.
+ Use LOG. See also 1.19.4.
1.19 vs_2_0
Alias for ARR.
+
+1.19.3 EXPP - Approximate Exponential Base 2
+
+ Use EX2.
+
+
+1.19.4 LOGP - Logarithm Base 2
+
+ Use LG2.
+
+
+2 Explanation of symbols used
+==============================
+
+
+2.1 Functions
+--------------
+
+
+ abs(x) Absolute value of x.
+ |x|
+ (x < 0.0) ? -x : x
+
+ ceil(x) Ceiling of x.
+
+ 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.
+
+ lg2(x) Logarithm base 2 of x.
+
+ max(x,y) Maximum of x and y.
+ (x > y) ? x : y
+
+ min(x,y) Minimum of x and y.
+ (x < y) ? x : y
+
+ partialx(x) Derivative of x relative to fragment's X.
+
+ partialy(x) Derivative of x relative to fragment's Y.
+
+ pop() Pop from stack.
+
+ pow(x,y) Raise x to power of y.
+
+ push(x) Push x on stack.
+
+ round(x) Round x.
+
+ sin(x) Sine of x.
+
+ sqrt(x) Square root of x.
+
+ trunc(x) Truncate x.
+
+
+2.2 Keywords
+-------------
+
+
+ discard Discard fragment.
+
+ dst First destination register.
+
+ dst0 First destination register.
+
+ pc Program counter.
+
+ src First source register.
+
+ src0 First source register.
+
+ src1 Second source register.
+
+ src2 Third source register.
+
+ target Label of target instruction.
+