tf2/tf2_src/materialsystem/stdshaders/yuv.psh

ps.1.1

;------------------------------------------------------------------------------
; Draw a texture . . woo hoo!
; t0 - texture
;
; The texture coordinates need to be defined as follows:
; tc0 - texcoords
;------------------------------------------------------------------------------

def c0, 0.299f, 0.587f, 0.114f, 1.0f

; Get the color from the texture
tex t0

; FIXME: This can only be implemented in dx9 (or ps1.4)
; need to output max( r, g, b ) in all channels
; Instead, I'm going to do the RGB->YUV conversion
dp3 r1, c0, t0
mov r0.rgb, r1.a
mov r0.a, c0.a