;------------------------------------------------------------------------------
; Filter to get extract "hot" parts of the image
;
; Copyright (C) 2002 Microsoft Corporation
; All rights reserved.
;------------------------------------------------------------------------------
xps.1.1

; source textures
tex t0
tex t1

#include "../win32/shader_constants.h"

; We've set our original depth/stencil as an ARGB texture, put stencil in A:
mov r0, t1.b

; Remove low end
sub r1, t0, c[CP_EXTRACT_CUTOFF]	; Remove low end

; Throw out pixels that weren't stenciled:
cnd r0, r0.a, r1, zero

; Output = r0 + SCALE*r0 = (1+SCALE) * r0
xfc c[CP_EXTRACT_SCALE], r0_sat, zero, r0_sat, zero, zero, r0_sat.a