Difference between revisions of "NV2A/Vertex attributes"
(Very rough info) |
m |
||
| 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. | ||
| − | === Normalized unsigned | + | === 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]). | 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 | FIXME: Verify | ||
| − | === Normalized unsigned | + | === Normalized unsigned byte (GL) === |
Unsigned bytes arranged as XYZW (RGBA) in memory. | Unsigned bytes arranged as XYZW (RGBA) in memory. | ||
Revision as of 21:58, 21 April 2017
This article documents the attribute types which are supported by the Xbox GPU.
Contents
Normalized unsigned byte (D3D)
Unsigned bytes aranged as ZYXW (BGRA) in memory (Also see 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?
