material20_zfill.psh

// This file is distributed under a BSD license. See LICENSE.txt for details.

ps.2.0
// material 2.0: zfill pass (pixel shader)

// flag data layout, constants
flags
	Flags
	_pad[7]
	
	TexFlags[4]
	TexScale[4]
	
	LgtFlags[4]
	LgtScale[4]
	
	SRT1[9]
	SRT2[5]
	ColC[4]
	
	TexUsed[4]
	LgtUsed[4]
	SrcScale[4]
	SrcScale2[4]
	LgtType
endflags

def c1,0,0,0,1

if TexUsed[3][0]
  dcl     t0.xy
  dcl_2d  s0
  
  temp    color
  texld   color,t0,s0
  if Flags[8] // alpha burn
    add_sat color.a,color,-c0.x
    pow     color.a,color.a,c0.y
    mul_sat color.a,color,c0.z
  endif
  
  mov     oC0,color
else
  mov     oC0,c1
endif