Vertex Format for NV30
(Tested on NV34)
glBegin/glEnd
FIFO Command:
0x1808 (NV30_BEGIN_END)
Arguments:
Always take only one argument. It depends on what type of drawing will be done. STOP means glEnd(). These are the possible values:
STOP 0x00000000 POINTS 0x00000001 LINES 0x00000002 LINE_LOOP 0x00000003 LINE_STRIP 0x00000004 TRIANGLES 0x00000005 TRIANGLE_STRIP 0x00000006 TRIANGLE_FAN 0x00000007 QUADS 0x00000008 QUAD_STRIP 0x00000009 POLYGON 0x0000000a
Vertex Info
Notes
The number of arguments is the minimum needed to reach all types of vertex data that will be set between the glBegin/glEnd. For example, if glVertex3f, glNormal4f and glTexCoord3f are called in between glBegin/glEnd, then the number of arguments will be 9, and it will set arguments 2, 4, 5, 6, 7 and 8 to 0x02, although it could be 0x04 or 0x05 (from doc/vertex_attributes).
FIFO Command:
0x1740 (NV30_VERTEX_FORMAT)
Arguments:
Each argument represents one type of attribute that can be given in a glBegin/glEnd block. The value on the argument represents how much components will be set to the given attribute and the type of this information (for NV20+ it seems to be only float) with this format:
(number_of_components << 4)|2 (always uses float)
These are the 16 arguments (extracted from doc/vertex_format_nv44):
01 vertex position 02 vertex weights 03 normal 04 primary color 05 secondary color 06 fog coord 07 (not used?) 08 (not used?) 09 texture coord 0 10 texture coord 1 11 texture coord 2 12 texture coord 3 13 texture coord 4 14 texture coord 5 15 texture coord 6 16 texture coord 7
Example
(from doc/vertex_format_nv44)
Big vertices (Position + texture coordinates or Position + texture coordinates + normal):
STOP 0x00000000 0x00243740 (max 36 byte vertices, so 9 slots) 0x00000022 (2 coordinates per vertex) or 0x00000032 (3 coordinates per vertex) or 0x00000042 (4 coordinates per vertex) 0x00000002 0x00000032 (3 normal components) 0x00000032 (3 color components [RGB] per vertex) 0x00000002 0x00000002 0x00000002 0x00000002 0x00000022 (2 texture components)
Vertex Data
Notes:
(from doc/vertex_format_nv44)
Restart a batch after 60 vertices. Maximum number of bytes is 2016; restart a batch for more.
FIFO Command:
0x40001818 (NV30_VERTEX_INFO)
Arguments:
(from doc/vertex_format_nv44)
All vertex data is in IEEE floating point format ordered as follows (each property is optional except the first two vertex coordinates):
** vertex coordinates within ]-inf,inf[ X Y Z T ** normal coordinates within [0,1] NX NY NZ ** vertex color within [0,1] R G B A ** texture coordinates within [0,1] TX TY TZ