MAMEWorld Forums - EmuChat - HLSL Scanlines not visible when pincushion =0

This HLSL code will not display scanlines for me until I change pincushion to 0.010000 or greater.

mame 0.145
resolution 640x480 for Rtype (test game)

same situation for any other game

Code:

hlsl_enable            1
hlsl_prescale_x        0
hlsl_prescale_y        0
hlsl_preset            -1
hlsl_snap_width        2048
hlsl_snap_height       1536
shadow_mask_alpha      0.000000
shadow_mask_texture    ApertureMRES_j4.png
shadow_mask_x_count    320
shadow_mask_y_count    240
shadow_mask_usize      0.093750
shadow_mask_vsize      0.109375
curvature              0.000000
pincushion             0.000000
scanline_alpha         1.000000
scanline_size          1.000000
scanline_height        1.000000
scanline_bright_scale  1.600000
scanline_bright_offset 0.600000
scanline_jitter        0.000000
defocus                0.000000,0.000000
converge_x             0.000000,0.000000,0.000000
converge_y             0.000000,0.000000,0.000000
radial_converge_x      0.000000,0.000000,0.000000
radial_converge_y      0.000000,0.000000,0.000000
red_ratio              1.000000,0.000000,0.000000
grn_ratio              0.000000,1.000000,0.000000
blu_ratio              0.000000,0.000000,1.100000
saturation             1.000000
offset                 0.000000,0.000000,0.000000
scale                  1.000000,1.000000,1.000000
power                  1.000000,1.000000,1.000000
floor                  0.000000,0.000000,0.000000
phosphor_life          0.000000,0.000000,0.000000
yiq_enable             0
yiq_cc                 3.597545
yiq_a                  0.500000
yiq_b                  0.500000
yiq_o                  0.000000
yiq_p                  1.000000
yiq_n                  1.000000
yiq_y                  6.000000
yiq_i                  1.200000
yiq_q                  0.600000
yiq_scan_time          52.599998
yiq_phase_count        2