vs_2_0
dcl_position	v0
dcl_normal		v1
dcl_color		v2
dcl_texcoord0	v3
dcl_tangent	v7
dcl_binormal	v8
dcl_texcoord4	v9
#include "..\..\VertexShader.h"

;------------------------------------------------------------------------------
; Geometry transform
;------------------------------------------------------------------------------

; Copy model-space geometry to pipeline registers
mov		pPos, vPos
mov		pNormal, vNormal

; Copy model-space basis vectors to pipeline registers
mov		pBasisU, vBasisU
mov		pBasisV, vBasisV

; Transform position to projection space
m4x4	OPOS, vPos, C_PROJECTION_MATRIX
FIXUP_OPOS
#include "..\..\VertexShader.h"

;------------------------------------------------------------------------------
; Diffuse color
;------------------------------------------------------------------------------

; Combine vertex color and material color
mul		oD0, vDiffuse, C_MATERIAL_COLOR
#include "..\..\VertexShader.h"

;------------------------------------------------------------------------------
; Fog calculation
;------------------------------------------------------------------------------
#include "..\..\VertexShader.h"

;------------------------------------------------------------------------------
; Defines
;------------------------------------------------------------------------------

#define C_LIGHT_POSITION		c10
#define C_INVERSE_RADIUS		c11
#define C_HALF					c12


;------------------------------------------------------------------------------
; Texture coordinates
;------------------------------------------------------------------------------

; Calculate the vertex-to-light vector
add		rVertexToLight, C_LIGHT_POSITION, -pPos

; For light attenuation, store scaled and biased vertex-to-light vector in texture stages
mul		rTemp, rVertexToLight, C_INVERSE_RADIUS
mad		oT0.xy, rTemp.xy, C_HALF, C_HALF
mad		oT1.x, rTemp.z, C_HALF, C_HALF
mov		oT1.y, C_HALF

; Transform L vector into texture space and store as a texture stage
dp3		oT2.x, rVertexToLight, pBasisU
dp3		oT2.y, rVertexToLight, pBasisV
dp3		oT2.z, rVertexToLight, pNormal

; Last texture stage is the normal map
mul		oT3.xy, vTexCoords, C_TEXCOORD_DECOMPRESS