SEGA SATURN DEVELOPER'S MANUAL

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6.2 Function list Function Function name number 3D sprite work area definition macro SPR_3DefineWork 1 Initialize 3D sprite display SPR_3Initial 2 Set clipping mode SPR_3SetClipLevel 3 Set unit pixel count SPR_3SetPixelCount 4 Light source set SPR_3SetLight 5 Set of viewpoints SPR_3SetView 6 Move cluster SPR_3MoveCluster 7 Model registration SPR_3DrawModel 8 Draw model SPR_3Flush 9 Set of textures SPR_3SetTexture 10 Release texture area SPR_3ClrTexture 11 Function call for all clusters SPR_3CallAllCluster 12 Change texture color data SPR_3ChangeTexColor 13 Set minimum / maximum value of Z sort range SPR_3SetZSortMinMax 14 Get current 3D environment data SPR_3GetStatus 15 Surface normal vector calculation of object SPR_3SetSurfNormVect 16 High-speed drawing parameter set for VDP1 SPR_3SetDrawSpeed 17

6.3 Function specification

Title
Function specifications

Function
VDP1 3D work area definition macro

Function Name
SPR_3DefineWork

No
1

Function	Function name	number
3D sprite work area definition macro	SPR_3DefineWork	1
Initialize 3D sprite display	SPR_3Initial	2
Set clipping mode	SPR_3SetClipLevel	3
Set unit pixel count	SPR_3SetPixelCount	4
Light source set	SPR_3SetLight	5
Set of viewpoints	SPR_3SetView	6
Move cluster	SPR_3MoveCluster	7
Model registration	SPR_3DrawModel	8
Draw model	SPR_3Flush	9
Set of textures	SPR_3SetTexture	10
Release texture area	SPR_3ClrTexture	11
Function call for all clusters	SPR_3CallAllCluster	12
Change texture color data	SPR_3ChangeTexColor	13
Set minimum / maximum value of Z sort range	SPR_3SetZSortMinMax	14
Get current 3D environment data	SPR_3GetStatus	15
Surface normal vector calculation of object	SPR_3SetSurfNormVect	16
High-speed drawing parameter set for VDP1	SPR_3SetDrawSpeed	17

  format  [# define SPR_3USE_DOUBLE_BUF]
  [# define SPR_3NEED_WORLD_VERT]
  #include "sega_spr.h"
 S  SPR_3DefineWork (WORK3D, OBJ_SURF_MAX, OBJ_VERT_MAX)
 Input  WORK3D: Work area name
  OBJ_SURF_MAX: Maximum number of objects
  OBJ_VERT_MAX: Maximum number of vertices of the object
 Function  VDP1 Defines the work area used in 3D display as the data area in the AP.
:  #define SPR_3USE_DOUBLE_BUF can be omitted. If specified, the vertex coordinates and surface of the object
.  Uses two brightness tables to parallelize processing such as coordinate conversion by DSP and SH processing, and execute
 Raise .
 #  #define SPR_3NEED_WORLD_VERT can be omitted.
 Notify the vertex coordinate table in the  field coordinate system.
 #  #define SPR_3USE_DOUBLE_BUF and # definePR_3NEED_WORD_VERTH
  #define Must be defined before defining "sega_spr.h".

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