////////////////////////
// Set UV coordinates 4 envbumping //
////////////////////////



;add r0, v0, -c9				// DirFromCamera = Vector - CameraPos
;
;// normalize direction from camera
;dp3 r1.x, r0, r0			// DirFromCameraLenSquared = DirFromCamera | DirFromCamera
;rsq r1.y, r1.x				// OneOverDirFromCameraLen = 1.0f / sqrt(DirFromCameraLenSquared)
;mul r0, r0, r1.y			// DirFromCamera *= OneOverDirFromCameraLen
;
;
;// produce S n T vectors from vertex normal
;mov oT1, v1
;mul r3, v1.zxyw, c11.xyzw
;mad r4.xyz, v1.yzxw, c11.zxyw, -r3    //  S
;mul r3, v1.zxyw, c11.xyzw
;mad r5.xyz, v1.yzxw, c11.zxyw, -r3    //  T
;
;
;// normalize s n t
;
;dp3 r4.w, r4, r4
;rsq r4.w, r4.w
;mul r4, r4, r4.w
;
;dp3 r5.w, r5, r5
;rsq r5.w, r5.w
;mul r5, r5, r5.w
;
;// scale bumps
;
;mul r4,r4,c37
;mul r5,r5,c37
;
;// rotate s n t by world(model) orlientation basis
;
;dp3 oT1.x, r4, c10
;dp3 oT1.y, r5, c10
;dp3 oT1.z, v1, c10
;
;dp3 oT2.x, r4, c11
;dp3 oT2.y, r5, c11
;dp3 oT2.z, v1, c11
;
;dp3 oT3.x, r4, c12
;dp3 oT3.y, r5, c12
;dp3 oT3.z, v1, c12
;
;
;mov oT1.w,r0.x
;mov oT2.w,r0.y
;mov oT3.w,r0.z   // update dynamic eye vector for vspec PS
;
;

add r0, v0, -c9				// DirFromCamera = Vector - CameraPos
dp3 r1.x, r0, r0			// DirFromCameraLenSquared = DirFromCamera | DirFromCamera
rsq r1.y, r1.x				// OneOverDirFromCameraLen = 1.0f / sqrt(DirFromCameraLenSquared)
mul r0, r0, r1.y			// DirFromCamera *= OneOverDirFromCameraLen

dp3 r1.z, r0, v1			// Mul = DirFromCamera | Normal
mul r1.w, r1.z, -c94.x		// Mul *= -2.0f
mad r2, v1, r1.w, r0		// dir = Normal * Mul + DirFromCamera

dp3 oT0.x, r2, c12			// u = dir | ModelMatrixRight
dp3 oT0.y, r2, c13			// v = dir | ModelMatrixUp
dp3 oT0.z, r2, c14			// w = dir | ModelMatrixLook

// copy base UV's

mov oT1, v3
;mov oT2, v3