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//celVS.txt - Vertex shader for cel shading


//c0-c3 worldViewProjection (total) matrix

//c4    color

//c5    light position

//c6    camera position


//v0    position

//v1    normal


vs.1.0

//position=total matrix*v0

m4x4 oPos, v0, c0

//color=c4

mov oD0, c4


//r0=light vector=light position-vertex position (object space)

sub r0, c5, v0

//r1=normalize r0

dp3 r1.w, r0, r0
rsq r1.w, r1.w
mul r1, r1.w, r0.xyz

//tex0.x = r1 dot n

dp3 oT0.x, r1, v1


//r0=view vector=camera position-vertex position (object space)

sub r0, c6, v0

//r1=normalize r0

dp3 r1.w, r0, r0
rsq r1.w, r1.w
mul r1, r1.w, r0.xyz

//tex1.x = r1 dot n

dp3 oT1.x, r1, v1