New CRT shader from Guest + CRT Guest Advanced updates

[guest.r]

Can you confirm this as a regression compared with the previous version? Color temperature is also in my to-do list, but will ‘prio’ it a bit now.

[Dogway]

You can use a calibrator yes, but if you lack one and assume its calibrated to 2.2 or 2.4 you can test the output of a greyscale ramp from retroarch in DaVinci Resolve (free) with the Parade Scope, or even Avisynth (lighter). Compare it with a gamma ramp of your like. It should measure grade’s CRT gamma given that crt-guest-venom or following shaders don’t alter it.

[Nesguy]

Looks good here…? Color temp 50%.

I’ve noticed that beam shape and scanline parameters have a big effect on this.

shaders = "7"
shader0 = "shaders_slang/misc/grade.slang"
filter_linear0 = "false"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = "StockPass"
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"
scale_type_x0 = "source"
scale_x0 = "1.000000"
scale_type_y0 = "source"
scale_y0 = "1.000000"
shader1 = "shaders_slang/crt/shaders/guest/crt-gdv-new/afterglow0.slang"
filter_linear1 = "false"
wrap_mode1 = "clamp_to_border"
mipmap_input1 = "false"
alias1 = "AfterglowPass"
float_framebuffer1 = "false"
srgb_framebuffer1 = "false"
scale_type_x1 = "source"
scale_x1 = "1.000000"
scale_type_y1 = "source"
scale_y1 = "1.000000"
shader2 = "shaders_slang/crt/shaders/guest/crt-gdv-new/pre-shaders-afterglow.slang"
filter_linear2 = "false"
wrap_mode2 = "clamp_to_border"
mipmap_input2 = "false"
alias2 = "LinearizePass"
float_framebuffer2 = "true"
srgb_framebuffer2 = "false"
scale_type_x2 = "source"
scale_x2 = "1.000000"
scale_type_y2 = "source"
scale_y2 = "1.000000"
shader3 = "shaders_slang/crt/shaders/guest/crt-gdv-new/avg-lum.slang"
filter_linear3 = "true"
wrap_mode3 = "clamp_to_border"
mipmap_input3 = "true"
alias3 = "AvgLumPass"
float_framebuffer3 = "false"
srgb_framebuffer3 = "false"
scale_type_x3 = "source"
scale_x3 = "1.000000"
scale_type_y3 = "source"
scale_y3 = "1.000000"
shader4 = "shaders_slang/crt/shaders/guest/crt-gdv-new/blur_horiz2.slang"
filter_linear4 = "true"
wrap_mode4 = "clamp_to_border"
mipmap_input4 = "false"
alias4 = ""
float_framebuffer4 = "true"
srgb_framebuffer4 = "false"
scale_type_x4 = "absolute"
scale_x4 = "800"
scale_type_y4 = "source"
scale_y4 = "1.000000"
shader5 = "shaders_slang/crt/shaders/guest/crt-gdv-new/blur_vert2.slang"
filter_linear5 = "true"
wrap_mode5 = "clamp_to_border"
mipmap_input5 = "false"
alias5 = "GlowPass"
float_framebuffer5 = "true"
srgb_framebuffer5 = "false"
scale_type_x5 = "absolute"
scale_x5 = "800"
scale_type_y5 = "absolute"
scale_y5 = "600"
shader6 = "shaders_slang/crt/shaders/guest/crt-gdv-new/crt-guest-dr-venom2.slang"
filter_linear6 = "true"
wrap_mode6 = "clamp_to_border"
mipmap_input6 = "false"
alias6 = ""
float_framebuffer6 = "false"
srgb_framebuffer6 = "false"
scale_type_x6 = "viewport"
scale_x6 = "1.000000"
scale_type_y6 = "viewport"
scale_y6 = "1.000000"
parameters = "g_gamma_in;g_signal_type;g_gamma_type;g_crtgamut;g_space_out;g_hue_degrees;g_I_SHIFT;g_Q_SHIFT;g_I_MUL;g_Q_MUL;g_lum_fix;g_vignette;g_vstr;g_vpower;g_lum;g_cntrst;g_mid;wp_temperature;g_sat;g_vibr;g_satr;g_satg;g_satb;g_lift;blr;blg;blb;wlr;wlg;wlb;rg;rb;gr;gb;br;bg;LUT_Size1;LUT1_toggle;LUT_Size2;LUT2_toggle;PR;PG;PB;AS;sat;TNTC;CP;CS;WP;wp_saturation;GAMMA_INPUT;lsmooth;SIZEH;GLOW_FALLOFF_H;SIZEV;GLOW_FALLOFF_V;glow;bloom;TATE;IOS;OS;BLOOM;gamma_c;brightboost;brightboost1;gsl;scanline1;scanline2;beam_min;beam_max;beam_size;vertmask;scans;spike;h_sharp;s_sharp;csize;bsize;warpX;warpY;shadowMask;masksize;maskDark;maskLight;CGWG;mcut;slotmask;slotwidth;double_slot;slotms;mclip;inter;interm;gamma_out"
g_gamma_in = "2.400000"
g_signal_type = "1.000000"
g_gamma_type = "1.000000"
g_crtgamut = "2.000000"
g_space_out = "0.000000"
g_hue_degrees = "0.000000"
g_I_SHIFT = "0.000000"
g_Q_SHIFT = "0.000000"
g_I_MUL = "1.000000"
g_Q_MUL = "1.000000"
g_lum_fix = "0.000000"
g_vignette = "0.000000"
g_vstr = "40.000000"
g_vpower = "0.200000"
g_lum = "0.000000"
g_cntrst = "0.000000"
g_mid = "0.500000"
wp_temperature = "8005.000000"
g_sat = "0.000000"
g_vibr = "0.000000"
g_satr = "0.000000"
g_satg = "0.000000"
g_satb = "0.000000"
g_lift = "0.000000"
blr = "0.000000"
blg = "0.000000"
blb = "0.000000"
wlr = "1.000000"
wlg = "1.000000"
wlb = "1.000000"
rg = "0.000000"
rb = "0.000000"
gr = "0.000000"
gb = "0.000000"
br = "0.000000"
bg = "0.000000"
LUT_Size1 = "16.000000"
LUT1_toggle = "0.000000"
LUT_Size2 = "64.000000"
LUT2_toggle = "0.000000"
PR = "0.140000"
PG = "0.140000"
PB = "0.140000"
AS = "0.080000"
sat = "0.100000"
TNTC = "0.000000"
CP = "0.000000"
CS = "0.000000"
WP = "0.000000"
wp_saturation = "1.000000"
GAMMA_INPUT = "2.400000"
lsmooth = "0.900000"
SIZEH = "4.000000"
GLOW_FALLOFF_H = "0.300000"
SIZEV = "4.000000"
GLOW_FALLOFF_V = "0.300000"
glow = "0.000000"
bloom = "0.000000"
TATE = "0.000000"
IOS = "0.000000"
OS = "1.000000"
BLOOM = "0.000000"
gamma_c = "1.000000"
brightboost = "1.000000"
brightboost1 = "1.500000"
gsl = "0.000000"
scanline1 = "10.000000"
scanline2 = "20.000000"
beam_min = "1.999999"
beam_max = "1.000000"
beam_size = "1.000000"
vertmask = "0.000000"
scans = "0.600000"
spike = "1.000000"
h_sharp = "3.000001"
s_sharp = "1.000000"
csize = "0.000000"
bsize = "600.000000"
warpX = "0.000000"
warpY = "0.000000"
shadowMask = "8.000000"
masksize = "1.000000"
maskDark = "0.500000"
maskLight = "1.000000"
CGWG = "0.500000"
mcut = "1.150000"
slotmask = "0.000000"
slotwidth = "2.000000"
double_slot = "1.000000"
slotms = "1.000000"
mclip = "0.500000"
inter = "350.000000"
interm = "1.000000"
gamma_out = "2.400000"
textures = "SamplerLUT1;SamplerLUT2;SamplerLUT3"
SamplerLUT1 = "shaders_slang/crt/shaders/guest/lut/sony_trinitron1.png"
SamplerLUT1_linear = "true"
SamplerLUT1_wrap_mode = "clamp_to_border"
SamplerLUT1_mipmap = "false"
SamplerLUT2 = "shaders_slang/crt/shaders/guest/lut/sony_trinitron2.png"
SamplerLUT2_linear = "true"
SamplerLUT2_wrap_mode = "clamp_to_border"
SamplerLUT2_mipmap = "false"
SamplerLUT3 = "shaders_slang/crt/shaders/guest/lut/other1.png"
SamplerLUT3_linear = "true"
SamplerLUT3_wrap_mode = "clamp_to_border"
SamplerLUT3_mipmap = "false"

[BendBombBoom]

After some playing around the problem is the grade pass’s white point. If you set the white point to something like 8000 the color settings of venom wash out details in the brights. It probably doesn’t make sense to adjust them if you are using grade anyways.

[Nesguy]

Are you sure this doesn’t have something to do with the scanline/beam shape parameters? Check out the above shot, I don’t see any clipped detail in-game. I have noticed that it can be hard to balance things with all the automatic corrections that occur, takes a bit of trial and error.

[BendBombBoom]

@Nesguy I can’t figure out what it is. Baseline Venom2 I can make adjustments fine. When I push things to try and maximize thick to think scanlines are having strange things happen. Maybe it’s a combo of things I’m pushing to far. Check these settings out. Tweaking the color temp on this shader it blows out the outrun clouds. Also I’m getting rainbowing. These are not good settings but perhaps help with illuminate possible problems/conflicts. (With the shader or me )

shaders = "8"
shader0 = "shaders_slang/sharpen/shaders/fast-sharpen.slang"
filter_linear0 = "true"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = "StockPass"
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"
shader1 = "shaders_slang/crt/shaders/guest/crt-gdv-new/afterglow0.slang"
filter_linear1 = "false"
wrap_mode1 = "clamp_to_border"
mipmap_input1 = "false"
alias1 = "AfterglowPass"
float_framebuffer1 = "false"
srgb_framebuffer1 = "false"
scale_type_x1 = "source"
scale_x1 = "1.000000"
scale_type_y1 = "source"
scale_y1 = "1.000000"
shader2 = "shaders_slang/crt/shaders/guest/crt-gdv-new/pre-shaders-afterglow.slang"
filter_linear2 = "false"
wrap_mode2 = "clamp_to_border"
mipmap_input2 = "false"
alias2 = "LinearizePass"
float_framebuffer2 = "true"
srgb_framebuffer2 = "false"
scale_type_x2 = "source"
scale_x2 = "1.000000"
scale_type_y2 = "source"
scale_y2 = "1.000000"
shader3 = "shaders_slang/crt/shaders/guest/crt-gdv-new/avg-lum.slang"
filter_linear3 = "true"
wrap_mode3 = "clamp_to_border"
mipmap_input3 = "true"
alias3 = "AvgLumPass"
float_framebuffer3 = "false"
srgb_framebuffer3 = "false"
scale_type_x3 = "source"
scale_x3 = "1.000000"
scale_type_y3 = "source"
scale_y3 = "1.000000"
shader4 = "shaders_slang/crt/shaders/guest/crt-gdv-new/blur_horiz2.slang"
filter_linear4 = "true"
wrap_mode4 = "clamp_to_border"
mipmap_input4 = "false"
alias4 = ""
float_framebuffer4 = "true"
srgb_framebuffer4 = "false"
scale_type_x4 = "absolute"
scale_x4 = "800"
scale_type_y4 = "source"
scale_y4 = "1.000000"
shader5 = "shaders_slang/crt/shaders/guest/crt-gdv-new/blur_vert2.slang"
filter_linear5 = "true"
wrap_mode5 = "clamp_to_border"
mipmap_input5 = "false"
alias5 = "GlowPass"
float_framebuffer5 = "true"
srgb_framebuffer5 = "false"
scale_type_x5 = "absolute"
scale_x5 = "800"
scale_type_y5 = "absolute"
scale_y5 = "600"
shader6 = "shaders_slang/crt/shaders/guest/crt-gdv-new/crt-guest-dr-venom2.slang"
filter_linear6 = "true"
wrap_mode6 = "clamp_to_border"
mipmap_input6 = "false"
alias6 = ""
float_framebuffer6 = "false"
srgb_framebuffer6 = "false"
scale_type_x6 = "viewport"
scale_x6 = "1.000000"
scale_type_y6 = "viewport"
scale_y6 = "1.000000"
shader7 = "shaders_slang/misc/glass.slang"
filter_linear7 = "true"
wrap_mode7 = "clamp_to_border"
mipmap_input7 = "false"
alias7 = ""
float_framebuffer7 = "false"
srgb_framebuffer7 = "false"
scale_type_x7 = "source"
scale_x7 = "1.000000"
scale_type_y7 = "source"
scale_y7 = "1.000000"
parameters = "SHARPEN;CONTR;DETAILS;PR;PG;PB;AS;sat;TNTC;CP;CS;WP;wp_saturation;GAMMA_INPUT;lsmooth;SIZEH;GLOW_FALLOFF_H;SIZEV;GLOW_FALLOFF_V;glow;bloom;TATE;IOS;OS;BLOOM;gamma_c;brightboost;brightboost1;gsl;scanline1;scanline2;beam_min;beam_max;beam_size;vertmask;scans;spike;h_sharp;s_sharp;csize;bsize;warpX;warpY;shadowMask;masksize;maskDark;maskLight;CGWG;mcut;slotmask;slotwidth;double_slot;slotms;mclip;inter;interm;gamma_out;g_csize;g_bsize;g_flicker;g_shaker;g_refltog;g_reflgrain;g_reflstr;g_fresnel;g_reflblur;gz;gx;gy;gzr;gzg;gzb;goxr;goyr;goxg;goyg;goxb;goyb;TO;PH;PER;ASAT;temperature;luma_preserve;wp_red;wp_green;wp_blue"
SHARPEN = "1.000000"
CONTR = "0.100000"
DETAILS = "0.000000"
PR = "0.070000"
PG = "0.070000"
PB = "0.070000"
AS = "0.080000"
sat = "0.100000"
TNTC = "0.000000"
CP = "0.000000"
CS = "0.000000"
WP = "0.000000"
wp_saturation = "1.000000"
GAMMA_INPUT = "2.400000"
lsmooth = "0.900000"
SIZEH = "1.000000"
GLOW_FALLOFF_H = "1.000000"
SIZEV = "1.000000"
GLOW_FALLOFF_V = "1.000000"
glow = "0.250000"
bloom = "0.000000"
TATE = "0.000000"
IOS = "0.000000"
OS = "1.000000"
BLOOM = "0.000000"
gamma_c = "1.500000"
brightboost = "1.400000"
brightboost1 = "1.999999"
gsl = "0.000000"
scanline1 = "15.000000"
scanline2 = "3.000000"
beam_min = "3.250000"
beam_max = "1.250000"
beam_size = "1.000000"
vertmask = "0.500000"
scans = "0.600000"
spike = "1.000000"
h_sharp = "5.200000"
s_sharp = "0.500000"
csize = "0.000000"
bsize = "600.000000"
warpX = "0.000000"
warpY = "0.000000"
shadowMask = "7.000000"
masksize = "1.000000"
maskDark = "0.500000"
maskLight = "1.500000"
CGWG = "1.000000"
mcut = "1.150000"
slotmask = "0.000000"
slotwidth = "2.000000"
double_slot = "1.000000"
slotms = "1.000000"
mclip = "0.500000"
inter = "350.000000"
interm = "1.000000"
gamma_out = "2.400000"
g_csize = "0.000000"
g_bsize = "600.000000"
g_flicker = "0.000000"
g_shaker = "0.000000"
g_refltog = "1.000000"
g_reflgrain = "0.000000"
g_reflstr = "0.100000"
g_fresnel = "0.800000"
g_reflblur = "0.600000"
gz = "1.100000"
gx = "0.000000"
gy = "-0.020000"
gzr = "1.020000"
gzg = "1.010000"
gzb = "1.000000"
goxr = "0.030000"
goyr = "-0.020000"
goxg = "0.000000"
goyg = "-0.020000"
goxb = "-0.020000"
goyb = "0.000000"
TO = "1.000000"
PH = "2.000000"
PER = "0.750000"
ASAT = "0.200000"
temperature = "6500.000000"
luma_preserve = "1.000000"
wp_red = "0.000000"
wp_green = "0.000000"
wp_blue = "0.000000"
textures = "SamplerLUT1;SamplerLUT2;SamplerLUT3"
SamplerLUT1 = "shaders_slang/crt/shaders/guest/lut/sony_trinitron1.png"
SamplerLUT1_linear = "true"
SamplerLUT1_wrap_mode = "clamp_to_border"
SamplerLUT1_mipmap = "false"
SamplerLUT2 = "shaders_slang/crt/shaders/guest/lut/sony_trinitron2.png"
SamplerLUT2_linear = "true"
SamplerLUT2_wrap_mode = "clamp_to_border"
SamplerLUT2_mipmap = "false"
SamplerLUT3 = "shaders_slang/crt/shaders/guest/lut/other1.png"
SamplerLUT3_linear = "true"
SamplerLUT3_wrap_mode = "clamp_to_border"
SamplerLUT3_mipmap = "false"

[Nesguy]

Yeah I know what you mean; it’s hard to get a grip on things with what’s happening under the hood and it feels like there’s somewhat less freedom to adjust things without breaking the image in some way. I would try starting with more neutral settings and then gradually increasing them. With my settings above you should have room to play around with the beam shape low/high parameters.

Are you using the high res version?

[BendBombBoom]

I’ve compared both and haven’t seen too much a difference and sometimes I switch to a sub 4k monitor. I still get great results from Venom 2, I have just noticed a few quirks.

[lilbud]

I’m trying the newest version of the dr.venom2 shader out and I’m getting some really bad ghosting on NES Mesen core. Most visible on Level 1-2 of mario 1, which I’m posting a short clip of.

Quality isn’t the best, and I’m trying to play with only one hand on the controller.

[hunterk]

I don’t really see anything in the video, but perhaps that’s the revamped trails/persistence feature?

[lilbud]

you can see it with the blocks and the koopa troopas. They leave a trail after they scroll.

[Syh]

Pretty sure it’s the afterglow. The thing that hunter said.

[rafan]

@lilbud As the others said, it’s the afterglow feature in guest-venom. It’s supposed to simulate phosphor decay from real CRT, but this is inherently difficult to simulate (it would need a Retroarch update that provides more than 10x the history of frames to the shader then it is currently doing)

But anyway, since the others did not point you to it and you seem somewhat inexperienced with testing parameters. You can disable the effect by setting “Afterglow strength” to 0.00. Good luck!

[Syh]

I mean I assumed when we pointed out the issue it’d be fairly obvious.

[rafan]

I know mate, but he doesn’t seem well versed into this stuff and it would be a pitty if he would dislike the excellent shader for it.

[guest.r]

It’s very old behavior, afterglow was introduced since very early 2018 versions. After the rework it’s more sophisticated though, but the default settings are similar to old ones. I’m very interested if someone finds a regression or similar, it’s somewhat important to compare it with the official repository version though.

[Syh]

I’ll try and not be a lazy sack o’ shit sometime this week and check it out, as not to toot my own horn but besides you, nesguy and hyperspinmadness, I’m probably one of the people most well versed in how your shader works (both parameters and on a code level.)

[guest.r]

New crt-guest-dr-venom2 release versions:

I have been working on the shaders somewhat more and i think some features work nicer now.

Here are the changes compared with the previous ‘new’ version:

• global desaturation (saturation parameter range 0.0-1.0) works much nicer now
• color temperature uses D93 and D50 as endpoints now for better effect consistency
• minor lut tweaks, a color profile bug corrected
• integer scaling isn’t smart any more, user can select between lower and higher scale factor manually (plus horizontal aspect correction)
• mask8 added as described by Nesguy
• trinitron masks 5&6 are more appealing now
• bloom tweaked a bit
• in the presets (following the instruction) ‘linearize pass buffer’ can be forced to higher precision, usable if using input gamma above 3.0
• glow passes weights normalized and minor correctures
• last but not least, interlace-scanline features for hires and ntsc versions now use internal resolution as reference instead of integer scaline mode, old implementation was a bit ‘scarry’.

Download link:

https://mega.nz/file/Fg5EnRSL#AE08sZnngrfRDGMuhHjXh-J2weDuoFN00i49mP_lwkQ

Edit: minor update

Edit2: LUT1 fixed…

[lfan]

Your CRT shader is quite sophisticated. For example, I like the bloom effect, it’s a differentiator.

[Hunter_ARG]

What mask do you recommend to 1080p and what is your videos settings?