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authorMichal Krol <michal@vmware.com>2009-03-12 11:20:05 +0100
committerMichal Krol <michal@vmware.com>2009-03-12 18:32:27 +0100
commit8823d01f14d8522f42475e1daba3c3d73805f386 (patch)
tree31544147b40d27cd40e245541172ed686f831f0e /src/gallium/auxiliary/tgsi
parentf16da8d509e0d67eb2a697d0d566f7213d33f2bb (diff)
tgsi: Begin documenting NV_vertex_program2 instruction set operations.
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
index 9e70b957c7..88771bc909 100644
--- a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
+++ b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
@@ -526,3 +526,45 @@ TGSI Instruction Specification
dst.z = src0.x + src1.x * src2.x + src1.y * src2.y
dst.w = src0.y + src1.x * src2.z + src1.y * src2.w
+
+1.6 GL_NV_vertex_program2
+--------------------------
+
+
+1.6.1 ARA - Address Register Add
+
+ TBD
+
+
+1.6.2 ARR - Address Register Load With Round
+
+ dst.x = round(src.x)
+ dst.y = round(src.y)
+ dst.z = round(src.z)
+ dst.w = round(src.w)
+
+
+1.6.3 BRA - Branch
+
+ TBD
+
+
+1.6.4 CAL - Subroutine Call
+
+ push(pc)
+ pc = target
+
+
+1.6.5 RET - Subroutine Call Return
+
+ pc = pop()
+
+
+1.6.6 SSG - Set Sign
+
+ dst.x = (src.x > 0.0) ? 1.0 : (src.x < 0.0) ? -1.0 : 0.0
+ dst.y = (src.y > 0.0) ? 1.0 : (src.y < 0.0) ? -1.0 : 0.0
+ dst.z = (src.z > 0.0) ? 1.0 : (src.z < 0.0) ? -1.0 : 0.0
+ dst.w = (src.w > 0.0) ? 1.0 : (src.w < 0.0) ? -1.0 : 0.0
+
+