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tgsi: Begin documenting NV_vertex_program2 instruction set operations.

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This commit is contained in:
Michal Krol 2009-03-12 11:20:05 +01:00
parent f16da8d509
commit 8823d01f14
1 changed files with 42 additions and 0 deletions
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42
src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt
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@ -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