You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.2 KiB
40 lines
1.2 KiB
5 years ago
|
ps.1.4
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; Phase 1
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; Get the 3-vector from the normal map
|
||
|
|
texld r0, t0
|
||
|
|
; Get environment matrix
|
||
|
|
texcrd r1.rgb, t1
|
||
|
|
texcrd r2.rgb, t2
|
||
|
|
texcrd r3.rgb, t3
|
||
|
|
; Normalize eye-ray vector through normalizer cube map
|
||
|
|
texld r4, t4 ; <---- CUBE MAP here!!!
|
||
|
|
|
||
|
|
; Transform normal
|
||
|
|
dp3 r5.r, r1, r0_bx2
|
||
|
|
dp3 r5.g, r2, r0_bx2
|
||
|
|
dp3 r5.b, r3, r0_bx2
|
||
|
|
; Reflection calculatiom
|
||
|
|
dp3_x2 r3.rgb, r5, r4_bx2 ; 2(N.Eye)
|
||
|
|
mul r3.rgb, r5, r3 ; 2N(N.Eye)
|
||
|
|
dp3 r2.rgb, r5, r5 ; N.N
|
||
|
|
mad r2.rgb, -r4_bx2, r2, r3 ; 2N(N.Eye) - Eye(N.N)
|
||
|
|
; Alpha gets lost after phase marker, so store it here
|
||
|
|
mov r5, r0.a
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; Phase 2
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
phase
|
||
|
|
; Sample environment map
|
||
|
|
texld r3, r2
|
||
|
|
; Result goes in output color (multiply by constant color c0)
|
||
|
|
mul r0.rgb, r3, c0
|
||
|
|
+mov r0.a, c0.a
|
||
|
|
|
||
|
|
mul r1.rgb, r0, r0
|
||
|
|
lrp r0.rgb, c1, r1, r0 ; blend between color and color * color
|
||
|
|
dp3 r1.rgb, r0, c3
|
||
|
|
lrp r0.rgb, c2, r0, r1 ; blend between color and greyscale
|
||
|
|
|