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authorMichal Krol <michal@vmware.com>2009-03-08 19:15:47 +0100
committerMichal Krol <michal@vmware.com>2009-03-08 19:16:36 +0100
commit8766677ac49c7430576ba4598dfe56c1c2655852 (patch)
tree51a6a475cfef7f32d15a7940d279a1f4b3deda5e
parent2305642b2e8edcebdc727f1181f7dbfcc78e8028 (diff)
tgsi: Document NV_vertex_program instruction set operations.
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt145
1 files changed, 145 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
new file mode 100644
index 0000000000..d9eeb2676b
--- /dev/null
+++ b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
@@ -0,0 +1,145 @@
+TGSI Instruction Specification
+==============================
+==============================
+
+
+1 Instruction Set Operations
+=============================
+
+
+1.1 GL_NV_vertex_program
+-------------------------
+
+
+1.1.1 ARL - Address Register Load
+
+ dst.x = floor(src.x)
+
+
+1.1.2 MOV - Move
+
+ dst.x = src.x
+ dst.y = src.y
+ dst.z = src.z
+ dst.w = src.w
+
+
+1.1.3 LIT - Light Coefficients
+
+ dst.x = 1.0
+ 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.w = 1.0
+
+
+1.1.4 RCP - Reciprocal
+
+ dst.x = 1.0 / src.x
+ dst.y = 1.0 / src.x
+ dst.z = 1.0 / src.x
+ dst.w = 1.0 / src.x
+
+
+1.1.5 RSQ - Reciprocal Square Root
+
+ dst.x = 1.0 / sqrt(abs(src.x))
+ dst.y = 1.0 / sqrt(abs(src.x))
+ dst.z = 1.0 / sqrt(abs(src.x))
+ dst.w = 1.0 / sqrt(abs(src.x))
+
+
+1.1.6 EXP - Exponential Base 2
+
+ dst.x = pow(2.0, floor(src.x))
+ dst.y = src.x - floor(src.x)
+ dst.z = pow(2.0, src.x)
+ dst.w = 1.0
+
+
+1.1.7 LOG - Logarithm Base 2
+
+ dst.x = floor(lg2(abs(src.x)))
+ dst.y = abs(src.x) / pow(2.0, floor(lg2(abs(src.x))))
+ dst.z = lg2(abs(src.x))
+ dst.w = 1.0
+
+
+1.1.8 MUL - Multiply
+
+ dst.x = src0.x * src1.x
+ dst.y = src0.y * src1.y
+ dst.z = src0.z * src1.z
+ dst.w = src0.w * src1.w
+
+
+1.1.9 ADD - Add
+
+ dst.x = src0.x + src1.x
+ dst.y = src0.y + src1.y
+ dst.z = src0.z + src1.z
+ dst.w = src0.w + src1.w
+
+
+1.1.10 DP3 - 3-component Dot Product
+
+ dst.x = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z
+ dst.y = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z
+ dst.z = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z
+ dst.w = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z
+
+
+1.1.11 DP4 - 4-component Dot Product
+
+ dst.x = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w
+ dst.y = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w
+ dst.z = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w
+ dst.w = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w
+
+
+1.1.12 DST - Distance Vector
+
+ dst.x = 1.0
+ dst.y = src0.y * src1.y
+ dst.z = src0.z
+ dst.w = src1.w
+
+
+1.1.13 MIN - Minimum
+
+ dst.x = min(src0.x, src1.x)
+ dst.y = min(src0.y, src1.y)
+ dst.z = min(src0.z, src1.z)
+ dst.w = min(src0.w, src1.w)
+
+
+1.1.14 MAX - Maximum
+
+ dst.x = max(src0.x, src1.x)
+ dst.y = max(src0.y, src1.y)
+ dst.z = max(src0.z, src1.z)
+ dst.w = max(src0.w, src1.w)
+
+
+1.1.15 SLT - Set On Less Than
+
+ dst.x = (src0.x < src1.x) ? 1.0 : 0.0
+ dst.y = (src0.y < src1.y) ? 1.0 : 0.0
+ dst.z = (src0.z < src1.z) ? 1.0 : 0.0
+ dst.w = (src0.w < src1.w) ? 1.0 : 0.0
+
+
+1.1.16 SGE - Set On Greater Equal Than
+
+ dst.x = (src0.x >= src1.x) ? 1.0 : 0.0
+ dst.y = (src0.y >= src1.y) ? 1.0 : 0.0
+ dst.z = (src0.z >= src1.z) ? 1.0 : 0.0
+ dst.w = (src0.w >= src1.w) ? 1.0 : 0.0
+
+
+1.1.17 MAD - Multiply And Add
+
+ dst.x = src0.x * src1.x + src2.x
+ dst.y = src0.y * src1.y + src2.y
+ dst.z = src0.z * src1.z + src2.z
+ dst.w = src0.w * src1.w + src2.w
+