NV2A/Vertex attributes - Revision history

JayFoxRox: Markup for FIXME

2019-01-22T23:32:19Z

Markup for FIXME

Mborgerson at 23:11, 22 January 2019

2019-01-22T23:11:53Z

JayFoxRox: Categorize

2018-12-29T15:57:15Z

Categorize

JayFoxRox: typo

2017-04-22T10:39:24Z

typo

JayFoxRox: Tried to document draw methods / vertex uploads. Still very wip and unverified

2017-04-22T08:52:51Z

Tried to document draw methods / vertex uploads. Still very wip and unverified

JayFoxRox at 21:58, 21 April 2017

2017-04-21T21:58:38Z

JayFoxRox: Very rough info

2017-04-21T21:41:16Z

Very rough info

New page

This article documents the attribute types which are supported by the Xbox GPU.

=== Normalized unsigned Byte (D3D) ===

Unsigned bytes aranged as ZYXW (BGRA) in memory (Also see [http://www.opengl.org/registry/specs/ARB/vertex_array_bgra.txt this GL extension]).
This is commonly used with an attribute count of 4.
FIXME: Does this still work with attribute count =/= 4 ?
Each byte will be mapped into the range 0.0 to 1.0.
FIXME: Verify

=== Normalized unsigned Byte (GL) ===

Unsigned bytes arranged as XYZW (RGBA) in memory.
Each byte will be mapped into the range 0.0 to 1.0.
FIXME: Verify

=== Normalized short ===

Shorts, arranged as XYZW.
Each short will be mapped into the range -1.0 to 1.0
FIXME: Verify

=== Float ===

IEEE-754 single precision float arranged as XYZW.
FIXME: What happens to NaN or denormals?

=== Short ===

Shorts, arranged as XYZW.
Each short will be mapped into the range -32768.0 to 32767.0
FIXME: Verify

=== Compressed normal ===

Each 32 bit attribute is consisting of 11 bit X, 11 bit Y, 10 bit Z.
Each component is signed and will be mapped into the range -1.0 to 1.0.
FIXME: Verify
FIXME: Is the attribute count ignored?

@@ Line 42: / Line 42: @@
 Unsigned bytes aranged as ZYXW (BGRA) in memory (Also see [http://www.opengl.org/registry/specs/ARB/vertex_array_bgra.txt this GL extension]).
-This is commonly used with an attribute count of 4.
+This is commonly used with an attribute count of 4{{FIXME|reason=Does this still work with attribute count =/= 4 ?}}.
-FIXME: Does this still work with attribute count =/= 4 ?
+Each byte will be mapped into the range{{FIXME|reason=Verify}} 0.0 to 1.0.
 === Normalized unsigned byte (GL) ===

@@ Line 17: / Line 17: @@
 ==== NV097_SET_VERTEX_DATA4F_M ... NV097_SET_VERTEX_DATA4F_M + 0xfc ====
 ==== NV097_SET_VERTEX_DATA2S ... NV097_SET_VERTEX_DATA2S + 0x3c ====
 ==== NV097_SET_VERTEX_DATA4UB ... NV097_SET_VERTEX_DATA4UB + 0x3c ====
 ==== NV097_SET_VERTEX_DATA4S_M ... NV097_SET_VERTEX_DATA4S_M + 0x7c ====

← Older revision		Revision as of 15:57, 29 December 2018
Line 70:		Line 70:
	FIXME: Verify		FIXME: Verify
	FIXME: Is the attribute count ignored?		FIXME: Is the attribute count ignored?
		+
		+
		+	[[Category:NV2A]]

@@ Line 22: / Line 22: @@
 === Inline Array ===
-Data uploaded through PHRAPH method NV097_INLINE_ARRAY.
+Data uploaded through PGRAPH method NV097_INLINE_ARRAY.
 The attributes are tightly packed in that buffer.
 Decoded using the attribute information.

← Older revision		Revision as of 08:52, 22 April 2017
Line 1:		Line 1:
	This article documents the attribute types which are supported by the Xbox GPU.		This article documents the attribute types which are supported by the Xbox GPU.
		+	Please take everything with a grain of salt - it's still being researched.
		+
		+	== Draw methods ==
		+
		+	=== Draw Arrays ===
		+
		+	Data uploaded through DMA.
		+	Each attribute has it's own offset and stride.
		+	Decoded using the attribute information.
		+
		+	=== Inline Buffer ===
		+
		+	Data uploaded and decoded through PGRAPH methods.
		+
		+	==== NV097_SET_VERTEX_DATA2F_M ... NV097_SET_VERTEX_DATA2F_M + 0x7c ====
		+	==== NV097_SET_VERTEX_DATA4F_M ... NV097_SET_VERTEX_DATA4F_M + 0xfc ====
		+	==== NV097_SET_VERTEX_DATA2S ... NV097_SET_VERTEX_DATA2S + 0x3c ====
		+	==== NV097_SET_VERTEX_DATA4UB ... NV097_SET_VERTEX_DATA4UB + 0x3c ====
		+	==== NV097_SET_VERTEX_DATA4S_M ... NV097_SET_VERTEX_DATA4S_M + 0x7c ====
		+
		+	=== Inline Array ===
		+
		+	Data uploaded through PHRAPH method NV097_INLINE_ARRAY.
		+	The attributes are tightly packed in that buffer.
		+	Decoded using the attribute information.
		+
		+	=== Inline Elements ===
		+
		+	Same as "Draw Arrays" but with an extra index buffer.
		+	The index buffer is uploaded through PGRAPH methods NV097_ARRAY_ELEMENT16 and NV097_ARRAY_ELEMENT32.
		+
		+	== Attribute Types ==

	=== Normalized unsigned byte (D3D) ===		=== Normalized unsigned byte (D3D) ===

@@ Line 1: / Line 1: @@
 This article documents the attribute types which are supported by the Xbox GPU.
-=== Normalized unsigned Byte (D3D) ===
+=== Normalized unsigned byte (D3D) ===
 Unsigned bytes aranged as ZYXW (BGRA) in memory (Also see [http://www.opengl.org/registry/specs/ARB/vertex_array_bgra.txt this GL extension]).
@@ Line 9: / Line 9: @@
 FIXME: Verify
-=== Normalized unsigned Byte (GL) ===
+=== Normalized unsigned byte (GL) ===
 Unsigned bytes arranged as XYZW (RGBA) in memory.