From 8691daf16ee53783209740c32b7dd504a07b1ab9 Mon Sep 17 00:00:00 2001 From: MajorPainTheCactus Date: Sat, 16 Apr 2022 22:04:14 +0100 Subject: [PATCH] Added the colour space gamuts back in after temporarily removing them to fix bugs Added gamma out as well as renaming previous gamma to gamma in --- ...t-sony-megatron-aeg-CTV-4800-VT-hdr.slangp | 2 - ...ny-megatron-bang-olufsen-mx8000-sdr.slangp | 4 +- ...megatron-jvc-d-series-AV-36D501-hdr.slangp | 2 +- ...megatron-jvc-d-series-AV-36D501-sdr.slangp | 4 +- ...ron-jvc-professional-TM-H1950CG-sdr.slangp | 4 +- ...-sony-megatron-sammy-atomiswave-sdr.slangp | 4 +- ...ny-megatron-sega-virtua-fighter-sdr.slangp | 4 +- ...crt-sony-megatron-sony-pvm-1910-hdr.slangp | 6 +- ...crt-sony-megatron-sony-pvm-1910-sdr.slangp | 4 +- ...crt-sony-megatron-sony-pvm-20L4-hdr.slangp | 5 +- ...crt-sony-megatron-sony-pvm-20L4-sdr.slangp | 4 +- ...crt-sony-megatron-sony-pvm-2730-hdr.slangp | 5 +- ...crt-sony-megatron-sony-pvm-2730-sdr.slangp | 4 +- ...ny-megatron-toshiba-microfilter-sdr.slangp | 4 +- ...t-sony-megatron-viewsonic-A90f+-sdr.slangp | 4 +- .../crt-sony-megatron-source-pass.slang | 4 +- hdr/shaders/crt-sony-megatron.slang | 4 +- hdr/shaders/include/colour_grade.h | 120 +++++------------- hdr/shaders/include/gamma_correct.h | 38 +++++- hdr/shaders/include/hdr10.h | 14 +- hdr/shaders/include/parameters.h | 12 +- 21 files changed, 106 insertions(+), 146 deletions(-) diff --git a/hdr/crt-sony-megatron-aeg-CTV-4800-VT-hdr.slangp b/hdr/crt-sony-megatron-aeg-CTV-4800-VT-hdr.slangp index 0b4dc68..fdc1e60 100644 --- a/hdr/crt-sony-megatron-aeg-CTV-4800-VT-hdr.slangp +++ b/hdr/crt-sony-megatron-aeg-CTV-4800-VT-hdr.slangp @@ -43,8 +43,6 @@ hcrt_crt_screen_type = "2.000000" hcrt_crt_resolution = "0.000000" hcrt_paper_white_nits = "700.000000" hcrt_expand_gamut = "0.000000" -hcrt_white_temperature = "0.000000" -hcrt_gamma = "0.000000" hcrt_red_vertical_convergence = "0.000000" hcrt_green_vertical_convergence = "0.000000" diff --git a/hdr/crt-sony-megatron-bang-olufsen-mx8000-sdr.slangp b/hdr/crt-sony-megatron-bang-olufsen-mx8000-sdr.slangp index c977003..c77a69d 100644 --- a/hdr/crt-sony-megatron-bang-olufsen-mx8000-sdr.slangp +++ b/hdr/crt-sony-megatron-bang-olufsen-mx8000-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-hdr.slangp b/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-hdr.slangp index 7c2637a..7dd1590 100644 --- a/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-hdr.slangp +++ b/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-hdr.slangp @@ -6,7 +6,7 @@ hcrt_paper_white_nits = "700.000000" hcrt_brightness = "0.200000" hcrt_contrast = "0.000000" hcrt_saturation = "0.000000" -hcrt_gamma = "-0.3000000" +hcrt_gamma_in = "-0.3000000" hcrt_expand_gamut = "1.000000" hcrt_red_scanline_min = "0.2000000" hcrt_red_scanline_max = "1.050000" diff --git a/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-sdr.slangp b/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-sdr.slangp index c7c1e99..78058d0 100644 --- a/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-sdr.slangp +++ b/hdr/crt-sony-megatron-jvc-d-series-AV-36D501-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-jvc-professional-TM-H1950CG-sdr.slangp b/hdr/crt-sony-megatron-jvc-professional-TM-H1950CG-sdr.slangp index 1fcb5eb..d1d39a0 100644 --- a/hdr/crt-sony-megatron-jvc-professional-TM-H1950CG-sdr.slangp +++ b/hdr/crt-sony-megatron-jvc-professional-TM-H1950CG-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-sammy-atomiswave-sdr.slangp b/hdr/crt-sony-megatron-sammy-atomiswave-sdr.slangp index 9e854a6..c01cae1 100644 --- a/hdr/crt-sony-megatron-sammy-atomiswave-sdr.slangp +++ b/hdr/crt-sony-megatron-sammy-atomiswave-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-sega-virtua-fighter-sdr.slangp b/hdr/crt-sony-megatron-sega-virtua-fighter-sdr.slangp index 25b79db..348d068 100644 --- a/hdr/crt-sony-megatron-sega-virtua-fighter-sdr.slangp +++ b/hdr/crt-sony-megatron-sega-virtua-fighter-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" +hcrt_gamma_in = "-0.200000" diff --git a/hdr/crt-sony-megatron-sony-pvm-1910-hdr.slangp b/hdr/crt-sony-megatron-sony-pvm-1910-hdr.slangp index 76d76a6..7837ca7 100644 --- a/hdr/crt-sony-megatron-sony-pvm-1910-hdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-1910-hdr.slangp @@ -2,13 +2,11 @@ hcrt_hdr = "1.000000" hcrt_crt_resolution = "0.000000" -hcrt_colour_system = "0.000000" -hcrt_white_temperature = "2800.000000" +hcrt_colour_system = "3.000000" hcrt_expand_gamut = "1.000000" hcrt_brightness = "0.150000" -hcrt_contrast = "0.000000" hcrt_saturation = "0.100000" -hcrt_gamma = "0.250000" +hcrt_gamma_in = "0.250000" hcrt_red_vertical_convergence = "0.000000" hcrt_green_vertical_convergence = "-0.150000" hcrt_blue_vertical_convergence = "0.000000" diff --git a/hdr/crt-sony-megatron-sony-pvm-1910-sdr.slangp b/hdr/crt-sony-megatron-sony-pvm-1910-sdr.slangp index 9939f5a..2e075fb 100644 --- a/hdr/crt-sony-megatron-sony-pvm-1910-sdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-1910-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-sony-pvm-20L4-hdr.slangp b/hdr/crt-sony-megatron-sony-pvm-20L4-hdr.slangp index 02022bf..2714048 100644 --- a/hdr/crt-sony-megatron-sony-pvm-20L4-hdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-20L4-hdr.slangp @@ -2,11 +2,8 @@ hcrt_hdr = "1.000000" hcrt_brightness = "0.150000" -hcrt_colour_system = "0.000000" -hcrt_white_temperature = "2800.000000" +hcrt_colour_system = "3.000000" hcrt_expand_gamut = "1.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "0.000000" hcrt_crt_resolution = "1.000000" hcrt_red_vertical_convergence = "0.100000" hcrt_green_vertical_convergence = "0.000000" diff --git a/hdr/crt-sony-megatron-sony-pvm-20L4-sdr.slangp b/hdr/crt-sony-megatron-sony-pvm-20L4-sdr.slangp index 2d2b3b2..46ad337 100644 --- a/hdr/crt-sony-megatron-sony-pvm-20L4-sdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-20L4-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-sony-pvm-2730-hdr.slangp b/hdr/crt-sony-megatron-sony-pvm-2730-hdr.slangp index baffcaa..401565d 100644 --- a/hdr/crt-sony-megatron-sony-pvm-2730-hdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-2730-hdr.slangp @@ -2,11 +2,8 @@ hcrt_hdr = "1.000000" hcrt_brightness = "0.150000" -hcrt_colour_system = "0.000000" -hcrt_white_temperature = "2800.000000" +hcrt_colour_system = "3.000000" hcrt_expand_gamut = "1.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "0.000000" hcrt_red_vertical_convergence = "-0.140000" hcrt_green_vertical_convergence = "0.000000" hcrt_blue_vertical_convergence = "0.000000" diff --git a/hdr/crt-sony-megatron-sony-pvm-2730-sdr.slangp b/hdr/crt-sony-megatron-sony-pvm-2730-sdr.slangp index 3d61483..b9036dc 100644 --- a/hdr/crt-sony-megatron-sony-pvm-2730-sdr.slangp +++ b/hdr/crt-sony-megatron-sony-pvm-2730-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-toshiba-microfilter-sdr.slangp b/hdr/crt-sony-megatron-toshiba-microfilter-sdr.slangp index e923b9e..bf0e69b 100644 --- a/hdr/crt-sony-megatron-toshiba-microfilter-sdr.slangp +++ b/hdr/crt-sony-megatron-toshiba-microfilter-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.00000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/crt-sony-megatron-viewsonic-A90f+-sdr.slangp b/hdr/crt-sony-megatron-viewsonic-A90f+-sdr.slangp index 6768050..d53b207 100644 --- a/hdr/crt-sony-megatron-viewsonic-A90f+-sdr.slangp +++ b/hdr/crt-sony-megatron-viewsonic-A90f+-sdr.slangp @@ -2,6 +2,4 @@ hcrt_hdr = "0.000000" -hcrt_brightness = "0.000000" -hcrt_contrast = "0.000000" -hcrt_gamma = "-0.600000" \ No newline at end of file +hcrt_gamma_in = "-0.200000" \ No newline at end of file diff --git a/hdr/shaders/crt-sony-megatron-source-pass.slang b/hdr/shaders/crt-sony-megatron-source-pass.slang index e8ce673..1fcd2b8 100644 --- a/hdr/shaders/crt-sony-megatron-source-pass.slang +++ b/hdr/shaders/crt-sony-megatron-source-pass.slang @@ -37,7 +37,7 @@ layout(push_constant) uniform Push float hcrt_brightness; float hcrt_contrast; float hcrt_saturation; - float hcrt_gamma; + float hcrt_gamma_in; } params; layout(std140, set = 0, binding = 0) uniform UBO @@ -58,7 +58,7 @@ layout(std140, set = 0, binding = 0) uniform UBO #define HCRT_BRIGHTNESS params.hcrt_brightness #define HCRT_CONTRAST params.hcrt_contrast #define HCRT_SATURATION params.hcrt_saturation -#define HCRT_GAMMA params.hcrt_gamma +#define HCRT_GAMMA_IN params.hcrt_gamma_in #define COMPAT_TEXTURE(c, d) texture(c, d) diff --git a/hdr/shaders/crt-sony-megatron.slang b/hdr/shaders/crt-sony-megatron.slang index a24b260..6fbf0fe 100644 --- a/hdr/shaders/crt-sony-megatron.slang +++ b/hdr/shaders/crt-sony-megatron.slang @@ -33,7 +33,7 @@ layout(push_constant) uniform Push float hcrt_max_nits; float hcrt_paper_white_nits; float hcrt_expand_gamut; - float hcrt_gamma; + float hcrt_gamma_out; float hcrt_lcd_resolution; float hcrt_lcd_subpixel; @@ -93,7 +93,7 @@ layout(std140, set = 0, binding = 0) uniform UBO #define HCRT_MAX_NITS params.hcrt_max_nits #define HCRT_PAPER_WHITE_NITS params.hcrt_paper_white_nits #define HCRT_EXPAND_GAMUT params.hcrt_expand_gamut -#define HCRT_GAMMA params.hcrt_gamma +#define HCRT_GAMMA_OUT params.hcrt_gamma_out #define HCRT_LCD_RESOLUTION params.hcrt_lcd_resolution #define HCRT_LCD_SUBPIXEL params.hcrt_lcd_subpixel diff --git a/hdr/shaders/include/colour_grade.h b/hdr/shaders/include/colour_grade.h index 20f5d33..420c8dd 100644 --- a/hdr/shaders/include/colour_grade.h +++ b/hdr/shaders/include/colour_grade.h @@ -1,5 +1,5 @@ -#define kColourSystems 3 +#define kColourSystems 4 #define kD50 5003.0f #define kD55 5503.0f @@ -7,49 +7,29 @@ #define kD75 7504.0f #define kD93 9305.0f -const mat3 XYZ_to_sRGB = mat3( - 3.24081254005432130, -0.969243049621582000, 0.055638398975133896, - -1.53730857372283940, 1.875966310501098600, -0.204007431864738460, - -0.49858659505844116, 0.041555050760507584, 1.057129383087158200); +const mat3 k709_to_XYZ = mat3( + 0.412391f, 0.357584f, 0.180481f, + 0.212639f, 0.715169f, 0.072192f, + 0.019331f, 0.119195f, 0.950532f); -const mat3 sRGB_to_XYZ = mat3( - 0.41241079568862915, 0.21264933049678802, 0.019331756979227066, - 0.35758456587791443, 0.71516913175582890, 0.119194857776165010, - 0.18045382201671600, 0.07218152284622192, 0.950390160083770800); +const mat3 kPAL_to_XYZ = mat3( + 0.430554f, 0.341550f, 0.178352f, + 0.222004f, 0.706655f, 0.071341f, + 0.020182f, 0.129553f, 0.939322f); -// Phosphor transforms found in Dogway's Grade.slang shader +const mat3 kNTSC_to_XYZ = mat3( + 0.393521f, 0.365258f, 0.191677f, + 0.212376f, 0.701060f, 0.086564f, + 0.018739f, 0.111934f, 0.958385f); -// SMPTE-C - Measured Average Phosphor (1979-1994) -const mat3 P22_transform = mat3( - 0.4665636420249939, 0.25661000609397890, 0.005832045804709196, - 0.3039233088493347, 0.66820019483566280, 0.105618737637996670, - 0.1799621731042862, 0.07518967241048813, 0.977465748786926300); +const mat3 kXYZ_to_709 = mat3( + 3.240970f, -1.537383f, -0.498611f, + -0.969244f, 1.875968f, 0.041555f, + 0.055630f, -0.203977f, 1.056972f); -// SMPTE RP 145-1994 (SMPTE-C), 170M-1999 -// SMPTE-C - Standard Phosphor (Rec.601 NTSC) -const mat3 SMPTE_transform = mat3( - 0.39354196190834045, 0.21238772571086884, 0.01874009333550930, - 0.36525884270668030, 0.70106136798858640, 0.11193416267633438, - 0.19164848327636720, 0.08655092865228653, 0.95824241638183590); +const mat3 kColourGamut[kColourSystems] = { k709_to_XYZ, kPAL_to_XYZ, kNTSC_to_XYZ, kNTSC_to_XYZ }; -// SMPTE RP 145-1994 (SMPTE-C), 170M-1999 -// NTSC-J - Standard Phosphor (https://web.archive.org/web/20130413104152/http://arib.or.jp/english/html/overview/doc/4-TR-B09v1_0.pdf) -const mat3 NTSC_J_transform = mat3( - 0.39603787660598755, 0.22429330646991730, 0.02050681784749031, - 0.31201449036598206, 0.67417418956756590, 0.12814880907535553, - 0.24496731162071228, 0.10153251141309738, 1.26512730121612550); - -// ITU-R BT.470/601 (B/G) -// EBU Tech.3213-E PAL - Standard Phosphor for Studio Monitors -const mat3 EBU_transform = mat3( - 0.43194326758384705, 0.22272075712680817, 0.020247340202331543, - 0.34123489260673523, 0.70600330829620360, 0.129433929920196530, - 0.17818950116634370, 0.07127580046653748, 0.938464701175689700); - -// CRT Phosphor Gamut -const mat3 kPhosphorGamut[kColourSystems] = { EBU_transform , P22_transform, NTSC_J_transform }; - -const float kTemperatures[kColourSystems] = { kD65, kD65, kD93 }; // 8942.0f +const float kTemperatures[kColourSystems] = { kD65, kD65, kD65, kD93 }; // Values from: http://blenderartists.org/forum/showthread.php?270332-OSL-Goodness&p=2268693&viewfull=1#post2268693 const mat3 kWarmTemperature = mat3( @@ -86,53 +66,25 @@ vec3 WhiteBalance(float temperature, vec3 colour) return result; } -float r601r709ToLinear_1(const float channel) +float r601ToLinear_1(const float channel) { - return (channel >= 0.081f) ? pow((channel + 0.099f) * (1.0f / 1.099f), (1.0f / 0.45f) + HCRT_GAMMA) : channel * (1.0f / 4.5f); + return (channel >= 0.081f) ? pow((channel + 0.099f) * (1.0f / 1.099f), (1.0f / 0.45f)) : channel * (1.0f / 4.5f); } -vec3 r601r709ToLinear(const vec3 colour) +vec3 r601ToLinear(const vec3 colour) { - //return vec3(r601r709ToLinear_1(colour.r), r601r709ToLinear_1(colour.g), r601r709ToLinear_1(colour.b)); - return pow(colour, vec3((1.0f / 0.45f) + HCRT_GAMMA)); + return vec3(r601ToLinear_1(colour.r), r601ToLinear_1(colour.g), r601ToLinear_1(colour.b)); } -//float LinearTor601r709_1(const float channel) -//{ -// return (channel >= 0.018f) ? pow(channel * 1.099f, 0.45f) - 0.099f : channel * 4.5f; -//} -//vec3 LinearTor601r709(const vec3 colour) -//{ -// return vec3(LinearTor601r709_1(colour.r), LinearTor601r709_1(colour.g), LinearTor601r709_1(colour.b)); -//} - -// SDR Colour output spaces -float sRGBToLinear_1(const float channel) +float r709ToLinear_1(const float channel) { - return (channel > 0.04045f) ? pow((channel + 0.055f) * (1.0f / 1.055f), 2.4f) : channel * (1.0f / 12.92f); + return (channel >= 0.081f) ? pow((channel + 0.099f) * (1.0f / 1.099f), (1.0f / 0.45f)) : channel * (1.0f / 4.5f); } -vec3 sRGBToLinear(const vec3 colour) +vec3 r709ToLinear(const vec3 colour) { - //return vec3(sRGBToLinear_1(colour.r), sRGBToLinear_1(colour.g), sRGBToLinear_1(colour.b)); - return pow(colour, vec3(2.4f)); -} - -float LinearTosRGB_1(const float channel) -{ - return (channel > 0.0031308f) ? (1.055f * pow(channel, 1.0f / 2.4f)) - 0.055f : channel * 12.92f; -} - -vec3 LinearTosRGB(const vec3 colour) -{ - //return vec3(LinearTosRGB_1(colour.r), LinearTosRGB_1(colour.g), LinearTosRGB_1(colour.b)); - return pow(colour, vec3(1.0f / 2.4f)); -} - -vec3 LinearToDCIP3(const vec3 colour) -{ - return pow(colour, vec3(1.0f / 2.6f)); + return vec3(r709ToLinear_1(colour.r), r709ToLinear_1(colour.g), r709ToLinear_1(colour.b)); } // XYZ Yxy transforms found in Dogway's Grade.slang shader @@ -193,19 +145,17 @@ vec3 Saturation(const vec3 colour) return clamp(mix(vec3(luma), colour, vec3(saturation) * 2.0f), 0.0f, 1.0f); } -vec3 BrightnessContrastSaturation(const vec3 linear) +vec3 BrightnessContrastSaturation(const vec3 xyz) { - const vec3 xyz = sRGB_to_XYZ * linear; const vec3 Yxy = XYZtoYxy(xyz); - const float Y_gamma = clamp(LinearTosRGB_1(Yxy.x), 0.0f, 1.0f); + const float Y_gamma = clamp(pow(Yxy.x, 1.0f / 2.4f), 0.0f, 1.0f); const float Y_brightness = Brightness(Y_gamma); const float Y_contrast = Contrast(Y_brightness); - const vec3 contrast_linear = vec3(sRGBToLinear_1(Y_contrast), Yxy.y, Yxy.z); - const vec3 contrast_xyz = YxytoXYZ(contrast_linear); - const vec3 contrast = clamp(XYZ_to_sRGB * contrast_xyz, 0.0f, 1.0f); + const vec3 contrast_linear = vec3(pow(Y_contrast, 2.4f), Yxy.y, Yxy.z); + const vec3 contrast = clamp(YxytoXYZ(contrast_linear) * kXYZ_to_709, 0.0f, 1.0f); const vec3 saturation = Saturation(contrast); @@ -216,13 +166,13 @@ vec3 ColourGrade(const vec3 colour) { const uint colour_system = uint(HCRT_CRT_COLOUR_SYSTEM); - const vec3 linear = r601r709ToLinear(colour); + const vec3 white_point = WhiteBalance(kTemperatures[colour_system] + HCRT_WHITE_TEMPERATURE, colour); - const vec3 gamut = linear; // (HCRT_HDR == 0.0f) && (HCRT_OUTPUT_COLOUR_SPACE == 0.0f) ? linear : kPhosphorGamut[colour_system] * linear; + const vec3 linear = pow(white_point, vec3((1.0f / 0.45f) + HCRT_GAMMA_IN)); - const vec3 white_point = WhiteBalance(kTemperatures[colour_system] + HCRT_WHITE_TEMPERATURE, gamut); + const vec3 xyz = linear * kColourGamut[colour_system]; - const vec3 graded = BrightnessContrastSaturation(white_point); + const vec3 graded = BrightnessContrastSaturation(xyz); return graded; } diff --git a/hdr/shaders/include/gamma_correct.h b/hdr/shaders/include/gamma_correct.h index 1517143..57e52ed 100644 --- a/hdr/shaders/include/gamma_correct.h +++ b/hdr/shaders/include/gamma_correct.h @@ -1,8 +1,18 @@ // SDR Colour output spaces +const mat3 k709_to_XYZ = mat3( + 0.412391f, 0.357584f, 0.180481f, + 0.212639f, 0.715169f, 0.072192f, + 0.019331f, 0.119195f, 0.950532f); + +const mat3 kXYZ_to_DCIP3 = mat3 ( + 2.4934969119f, -0.9313836179f, -0.4027107845f, + -0.8294889696f, 1.7626640603f, 0.0236246858f, + 0.0358458302f, -0.0761723893f, 0.9568845240f); + float LinearTosRGB_1(const float channel) { - return (channel > 0.0031308f) ? (1.055f * pow(channel, 1.0f / 2.4f)) - 0.055f : channel * 12.92f; + return (channel > 0.0031308f) ? (1.055f * pow(channel, (1.0f / 2.4f) + HCRT_GAMMA_OUT)) - 0.055f : channel * 12.92f; } vec3 LinearTosRGB(const vec3 colour) @@ -10,16 +20,38 @@ vec3 LinearTosRGB(const vec3 colour) return vec3(LinearTosRGB_1(colour.r), LinearTosRGB_1(colour.g), LinearTosRGB_1(colour.b)); } +float LinearTo709_1(const float channel) +{ + return (channel >= 0.018f) ? pow(channel * 1.099f, 0.45f + HCRT_GAMMA_OUT) - 0.099f : channel * 4.5f; +} + +vec3 LinearTo709(const vec3 colour) +{ + return vec3(LinearTo709_1(colour.r), LinearTo709_1(colour.g), LinearTo709_1(colour.b)); +} + vec3 LinearToDCIP3(const vec3 colour) { - return pow(colour, vec3(1.0f / 2.6f)); + return clamp(pow(colour, vec3((1.0f / 2.6f) + HCRT_GAMMA_OUT)), 0.0f, 1.0f); } vec3 GammaCorrect(const vec3 scanline_colour) { if(HCRT_HDR < 1.0f) { - return HCRT_OUTPUT_COLOUR_SPACE == 0.0f ? LinearTosRGB(scanline_colour) : LinearToDCIP3(scanline_colour); + if(HCRT_OUTPUT_COLOUR_SPACE == 0.0f) + { + return LinearTo709(scanline_colour); + } + else if(HCRT_OUTPUT_COLOUR_SPACE == 1.0f) + { + return LinearTosRGB(scanline_colour); + } + else + { + const vec3 dcip3_colour = (scanline_colour * k709_to_XYZ) * kXYZ_to_DCIP3; + return LinearToDCIP3(dcip3_colour); + } } else { diff --git a/hdr/shaders/include/hdr10.h b/hdr/shaders/include/hdr10.h index e2de620..c6a584e 100644 --- a/hdr/shaders/include/hdr10.h +++ b/hdr/shaders/include/hdr10.h @@ -1,16 +1,18 @@ #define kMaxNitsFor2084 10000.0f -const mat3 k709to2020 = mat3 ( +const mat3 k709_to_2020 = mat3 ( 0.6274040f, 0.3292820f, 0.0433136f, 0.0690970f, 0.9195400f, 0.0113612f, 0.0163916f, 0.0880132f, 0.8955950f); /* START Converted from (Copyright (c) Microsoft Corporation - Licensed under the MIT License.) https://github.com/microsoft/Xbox-ATG-Samples/tree/master/Kits/ATGTK/HDR */ -const mat3 kExpanded709to2020 = mat3 ( - 0.6274040f, 0.3292820f, 0.0433136f, - 0.0457456, 0.941777, 0.0124772, - -0.00121055, 0.0176041, 0.983607); +const mat3 kExpanded709_to_2020 = mat3 ( + 0.6274040f, 0.3292820f, 0.0433136f, + 0.0457456f, 0.941777f, 0.0124772f, + -0.00121055f, 0.0176041f, 0.983607f); + +const mat3 k2020Gamuts[2] = { k709_to_2020, kExpanded709_to_2020 }; vec3 LinearToST2084(vec3 normalizedLinearValue) { @@ -22,7 +24,7 @@ vec3 LinearToST2084(vec3 normalizedLinearValue) /* Convert into HDR10 */ vec3 Hdr10(vec3 hdr_linear, float paper_white_nits, float expand_gamut) { - vec3 rec2020 = expand_gamut > 0.0f ? hdr_linear * kExpanded709to2020 : hdr_linear * k709to2020; + vec3 rec2020 = hdr_linear * k2020Gamuts[uint(expand_gamut)]; vec3 linearColour = rec2020 * (paper_white_nits / kMaxNitsFor2084); vec3 hdr10 = LinearToST2084(linearColour); diff --git a/hdr/shaders/include/parameters.h b/hdr/shaders/include/parameters.h index 7826615..1a6ea82 100644 --- a/hdr/shaders/include/parameters.h +++ b/hdr/shaders/include/parameters.h @@ -1,14 +1,19 @@ + + #pragma parameter hcrt_title "SONY MEGATRON COLOUR VIDEO MONITOR" 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_space0 " " 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_support0 "SDR mode: Turn up your TV's brightness as high as possible" 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_support1 "HDR mode: Set the peak luminance to that of your TV." 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_support2 "Then adjust paper white luminance until it looks right" 0.0 0.0 0.0001 0.0001 +#pragma parameter hcrt_support3 " " 0.0 0.0 0.0001 0.0001 +#pragma parameter hcrt_support4 "Default white points for the different colour systems:" 0.0 0.0 0.0001 0.0001 +#pragma parameter hcrt_support5 "709: 6500K, PAL: 6500K, NTSC-U: 6500K, NTSC-J: 9300K" 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_space1 " " 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_user_settings "YOUR DISPLAY'S SETTINGS:" 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_hdr " SDR | HDR" 1.0 0.0 1.0 1.0 -#pragma parameter hcrt_colour_space " SDR: Display's Colour Space: sRGB | DCI-P3" 0.0 0.0 1.0 1.0 +#pragma parameter hcrt_colour_space " SDR: Display's Colour Space: r709 | sRGB | DCI-P3" 1.0 0.0 2.0 1.0 #pragma parameter hcrt_max_nits " HDR: Display's Peak Luminance" 700.0 0.0 10000.0 10.0 #pragma parameter hcrt_paper_white_nits " HDR: Display's Paper White Luminance" 700.0 0.0 10000.0 10.0 #pragma parameter hcrt_expand_gamut " HDR: Original/Vivid" 0.0 0.0 1.0 1.0 @@ -18,12 +23,13 @@ #pragma parameter hcrt_developer_settings "CRT SETTINGS:" 0.0 0.0 0.0001 0.0001 #pragma parameter hcrt_crt_screen_type " Screen Type: APERTURE GRILLE | SHADOW MASK | SLOT MASK" 0.0 0.0 3.0 1.0 #pragma parameter hcrt_crt_resolution " Resolution: 300TVL | 600TVL | 800TVL | 1000TVL" 1.0 0.0 3.0 1.0 -#pragma parameter hcrt_colour_system " Colour System: PAL 6500K | NTSC-U 6500K | NTSC-J 9300K" 1.0 0.0 2.0 1.0 +#pragma parameter hcrt_colour_system " Colour System: r709 | PAL | NTSC-U | NTSC-J" 2.0 0.0 3.0 1.0 #pragma parameter hcrt_white_temperature " White Temperature Offset (Kelvin)" 0.0 -5000.0 12000.0 100.0 #pragma parameter hcrt_brightness " Brightness" 0.0 -1.0 1.0 0.01 #pragma parameter hcrt_contrast " Contrast" 0.0 -1.0 1.0 0.01 #pragma parameter hcrt_saturation " Saturation" 0.0 -1.0 1.0 0.01 -#pragma parameter hcrt_gamma " Gamma" 0.0 -1.0 1.0 0.01 +#pragma parameter hcrt_gamma_in " Gamma In" 0.0 -1.0 1.0 0.01 +#pragma parameter hcrt_gamma_out " Gamma Out" 0.0 -0.4 0.4 0.005 #pragma parameter hcrt_pin_phase " Pin Phase" 0.00 -0.2 0.2 0.01 #pragma parameter hcrt_pin_amp " Pin Amp" 0.00 -0.2 0.2 0.01 #pragma parameter hcrt_space3 " " 0.0 0.0 0.0001 0.0001