vs_2_0
dcl_position	v0
dcl_normal		v1
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
;------------------------------------------------------------------------------

; Initialize diffuse light
mov		rFinalDiffuse, C_AMBIENT_DIFFUSE

; Add diffuse spot and point lights
AddDiffuseSpotLight(C_LIGHT_POSITION_1, C_LIGHT_COLOR_1, C_LIGHT_ATTEN_1, C_LIGHT_DIRECTION_1, C_LIGHT_CONE_1, rFinalDiffuse)
AddDiffuseSpotLight(C_LIGHT_POSITION_2, C_LIGHT_COLOR_2, C_LIGHT_ATTEN_2, C_LIGHT_DIRECTION_2, C_LIGHT_CONE_2, rFinalDiffuse)
AddDiffusePointLight(C_LIGHT_POSITION_3, C_LIGHT_COLOR_3, C_LIGHT_ATTEN_3, rFinalDiffuse)
AddDiffusePointLight(C_LIGHT_POSITION_4, C_LIGHT_COLOR_4, C_LIGHT_ATTEN_4, rFinalDiffuse)
AddDiffusePointLight(C_LIGHT_POSITION_5, C_LIGHT_COLOR_5, C_LIGHT_ATTEN_5, rFinalDiffuse)
AddDiffusePointLight(C_LIGHT_POSITION_6, C_LIGHT_COLOR_6, C_LIGHT_ATTEN_6, rFinalDiffuse)
#if defined(_XBOX) || defined(_VS_2_0)
AddDiffusePointLight(C_LIGHT_POSITION_7, C_LIGHT_COLOR_7, C_LIGHT_ATTEN_7, rFinalDiffuse)
AddDiffusePointLight(C_LIGHT_POSITION_8, C_LIGHT_COLOR_8, C_LIGHT_ATTEN_8, rFinalDiffuse)
#endif

; Combine final diffuse light and material color
mul		oD0, rFinalDiffuse, C_MATERIAL_COLOR
#include "..\..\VertexShader.h"

;------------------------------------------------------------------------------
; Fog calculation
;------------------------------------------------------------------------------

; Calculate fog factor and copy to fog register
CalculateLayeredFog(pPos, oFog)
#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