tgsi: correct handling of return value from util_vsnprintf

[mesa.git] / src / gallium / auxiliary / tgsi / tgsi-instruction-set.txt

diff --git a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
index d19dfcade32800652af41c9c37f2f5227afe5764..a3f4947c734f2aca96cac763dd70d7b0494b0612 100644 (file)
--- a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
+++ b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
@@ -262,7 +262,7 @@ TGSI Instruction Specification
   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)
@@ -382,7 +382,7 @@ TGSI Instruction Specification
 
 1.5.7  KILP - Predicated Discard
 
-  TBD
+  discard
 
 
 1.5.8  LG2 - Logarithm Base 2
@@ -546,7 +546,7 @@ TGSI Instruction Specification
 
 1.6.3  BRA - Branch
 
-  TBD
+  pc = target
 
 
 1.6.4  CAL - Subroutine Call
@@ -599,7 +599,9 @@ TGSI Instruction Specification
 
 1.8.2  KIL - Conditional Discard
 
-  TBD
+  if (src.x < 0.0 || src.y < 0.0 || src.z < 0.0 || src.w < 0.0)
+    discard
+  endif
 
 
 1.8.3  SCS - Sine Cosine
@@ -1020,3 +1022,88 @@ TGSI Instruction Specification
 
   Alias for LG2.
 
+
+1.19  vs_2_0
+------------
+
+
+1.19.1  SGN - Set Sign
+
+  Alias for SSG.
+
+
+1.19.2  MOVA - Move Address Register
+
+  Alias for ARR.
+
+
+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.
+