NV2A/Vertex Shader - Revision history

Thrimbor: Add pipeline diagram

2025-12-19T21:34:40Z

Add pipeline diagram

2020-05-04T23:42:50Z

nvidia is having issues or taking files down; using archive.org links where possible

2019-12-30T18:51:10Z

Add an interesting nvidia paper which describes some vertex shader tricks

2018-12-29T15:57:53Z

2017-07-13T23:46:38Z

‎Related links

2017-07-13T23:46:11Z

‎Related links

2017-07-13T23:45:52Z

2017-04-22T10:45:59Z

Table headers

2017-04-22T09:13:25Z

Added opcodes

2017-04-21T21:57:38Z

‎Temporary registers

@@ Line 8: / Line 8: @@
 * Low-constants only / all constants
 * Vertex processing / State program
 == Registers ==

@@ Line 402: / Line 402: @@
 * nvidia resources
-** [https://www.nvidia.com/attach/6559 WhereIsThatVertexShaderInstruction.pdf] / [https://www.nvidia.com/attach/6560 WhereIsThatVertexShaderInstruction.doc]
+** [https://web.archive.org/web/20191214200729/https://www.nvidia.com/attach/6559 WhereIsThatVertexShaderInstruction.pdf] / [https://web.archive.org/web/20191214200738/https://www.nvidia.com/attach/6560 WhereIsThatVertexShaderInstruction.doc]
 * [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME|reason=Unconfirmed, needs testing}}
 [[Category:NV2A]]

@@ Line 401: / Line 401: @@
 == Related links ==
 * [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME|reason=Unconfirmed, needs testing}}
 [[Category:NV2A]]

← Older revision		Revision as of 15:57, 29 December 2018
Line 402:		Line 402:

	* [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME\|reason=Unconfirmed, needs testing}}		* [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME\|reason=Unconfirmed, needs testing}}
		+
		+	[[Category:NV2A]]

← Older revision		Revision as of 23:46, 13 July 2017
Line 401:		Line 401:
	== Related links ==		== Related links ==

−	- [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME\|reason=Unconfirmed, needs testing}}	+	* [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions]{{FIXME\|reason=Unconfirmed, needs testing}}

← Older revision		Revision as of 23:45, 13 July 2017
Line 398:		Line 398:
	\|ARL		\|ARL
	\|}		\|}
		+
		+	== Related links ==
		+
		+	- [https://github.com/envytools/envytools/blob/master/nvhw/pgraph_celsius_xfrm.c Code which appears to implement bit-accurate emulation of some instructions{{FIXME\|reason=Unconfirmed, needs testing}}]

@@ Line 24: / Line 24: @@
 |+Output registers
 |-
-|Index
+!Index
-|GL Name
+!GL Name
-|D3D Name
+!D3D Name
-|Meaning
+!Meaning
 |-
 |0
@@ Line 112: / Line 112: @@
 |+Fields
 |-
-|Meaning
+!Meaning
-|Word
+!Word
-|Offset (bits)
+!Offset (bits)
-|Size (bits)
+!Size (bits)
 |-
 |ILU Operation
@@ Line 296: / Line 296: @@
 |+Swizzle table
 |-
-|Value
+!Value
-|Meaning
+!Meaning
 |-
 |0
@@ Line 320: / Line 320: @@
 |+ILU Operations
 |-
-|Value
+!Value
-|Meaning
+!Meaning
 |-
 |0
@@ Line 353: / Line 353: @@
 |+MAC Operations
 |-
-|Value
+!Value
-|Meaning
+!Meaning
 |-
 |0

@@ Line 310: / Line 310: @@
 |3
 |W
 |}

@@ Line 92: / Line 92: @@
 There are 12 temporary registers: R0 to R11 (initialized to XYZW=0x00000000), as documented in the GL extension.
-Additionally, o[POS] is mirrored as R12 and can be used as source operand; so effectively you have 13 temporaries
+Additionally, o[HPOS] is mirrored as R12 and can be used as source operand; so effectively you have 13 temporaries
 === Constant space ===