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Update sgenpt-mix.slang

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Some improvements added.
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Hyllian 2024-02-14 18:43:26 -03:00 committed by GitHub
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1 changed files with 32 additions and 59 deletions
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91
dithering/shaders/sgenpt-mix.slang
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@ -1,9 +1,9 @@
#version 450
/*
SGENPT-MIX - Sega Genesis Pseudo Transparency Mixer Shader - v8b
SGENPT-MIX - Sega Genesis Pseudo Transparency Mixer Shader - v9b
2011-2020 Hyllian - sergiogdb@gmail.com
2011-2024 Hyllian - sergiogdb@gmail.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
@ -38,8 +38,8 @@ layout(push_constant) uniform Push
float SGPT_LINEAR_GAMMA;
} params;
#pragma parameter SGPT_BLEND_OPTION "0.OFF | 1.VL | 2.CB | 3.CB-S | 4.Both | 5.Both2 | 6.Both-S" 4.0 0.0 6.0 1.0
#pragma parameter SGPT_BLEND_LEVEL "SGENPT-MIX Both Blend Level" 1.0 0.0 1.0 0.1
#pragma parameter SGPT_BLEND_OPTION "0: OFF | 1: VL+CB | 2: Only VL | 3: Only CB" 1.0 0.0 3.0 1.0
#pragma parameter SGPT_BLEND_LEVEL "SGENPT-MIX Blend Level" 0.85 0.0 1.0 0.05
#pragma parameter SGPT_ADJUST_VIEW "SGENPT-MIX Adjust View" 0.0 0.0 1.0 1.0
#pragma parameter SGPT_LINEAR_GAMMA "SGENPT-MIX Use Linear Gamma" 1.0 0.0 1.0 1.0
#define SGPT_BLEND_OPTION params.SGPT_BLEND_OPTION
@ -51,11 +51,14 @@ layout(push_constant) uniform Push
#define GAMMA_IN(color) pow(color, vec3(GAMMA_EXP, GAMMA_EXP, GAMMA_EXP))
#define GAMMA_OUT(color) pow(color, vec3(1.0 / GAMMA_EXP, 1.0 / GAMMA_EXP, 1.0 / GAMMA_EXP))
const vec3 Y = vec3(.2126, .7152, .0722);
//const vec3 Y = vec3(.2126, .7152, .0722);
const vec3 Y = vec3( 0.299, 0.587, 0.114);
vec3 min_s(vec3 central, vec3 adj1, vec3 adj2) {return min(central, max(adj1, adj2));}
vec3 max_s(vec3 central, vec3 adj1, vec3 adj2) {return max(central, min(adj1, adj2));}
//vec3 min_s(vec3 central, vec3 adj1, vec3 adj2) {return clamp(central, adj1, adj2);}
layout(std140, set = 0, binding = 0) uniform UBO
{
mat4 MVP;
@ -87,76 +90,46 @@ void main()
vec3 C = GAMMA_IN(texture(Source, vTexCoord ).xyz);
vec3 L = GAMMA_IN(texture(Source, vTexCoord -dx).xyz);
vec3 R = GAMMA_IN(texture(Source, vTexCoord +dx).xyz);
vec3 U = GAMMA_IN(texture(Source, vTexCoord -dy).xyz);
vec3 D = GAMMA_IN(texture(Source, vTexCoord +dy).xyz);
vec3 UL = GAMMA_IN(texture(Source, vTexCoord -dx -dy).xyz);
vec3 UR = GAMMA_IN(texture(Source, vTexCoord +dx -dy).xyz);
vec3 DL = GAMMA_IN(texture(Source, vTexCoord -dx +dy).xyz);
vec3 DR = GAMMA_IN(texture(Source, vTexCoord +dx +dy).xyz);
vec3 color = C;
// Get min/max samples
vec3 min_sample = min_s(C, L, R);
vec3 max_sample = max_s(C, L, R);
float diff = dot(max(max(C, L), max(C, R)) - min(min(C, L), min(C, R)), Y);
float contrast = dot(max(C, max(L, R)) - min(C, min(L, R)), Y);
if (SGPT_BLEND_OPTION == 1) // Only Vertical Lines
contrast = smoothstep(0.0, 1.0, (1.0 - SGPT_BLEND_LEVEL) * contrast);
if (SGPT_BLEND_OPTION == 2) // Only Vertical Lines
{
vec3 UL = GAMMA_IN(texture(Source, vTexCoord -dx -dy).xyz);
vec3 UR = GAMMA_IN(texture(Source, vTexCoord +dx -dy).xyz);
vec3 DL = GAMMA_IN(texture(Source, vTexCoord -dx +dy).xyz);
vec3 DR = GAMMA_IN(texture(Source, vTexCoord +dx +dy).xyz);
min_sample = max_s(min_sample, min_s(C, DL, DR), min_s(C, UL, UR));
max_sample = min_s(max_sample, max_s(C, DL, DR), max_s(C, UL, UR));
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.25*( 1.0 - diff )*(L + R);
}
else if (SGPT_BLEND_OPTION == 2) // Only Checkerboard
else if (SGPT_BLEND_OPTION == 3) // Only Checkerboard
{
vec3 U = GAMMA_IN(texture(Source, vTexCoord -dy).xyz);
vec3 D = GAMMA_IN(texture(Source, vTexCoord +dy).xyz);
min_sample = max(min_sample, min_s(C, U, D));
max_sample = min(max_sample, max_s(C, U, D));
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.125*( 1.0 - diff )*(L + R + U + D);
}
else if (SGPT_BLEND_OPTION == 3) // Only Checkerboard - Soft
{
min_sample = min_s(min_sample, U, D);
max_sample = max_s(max_sample, U, D);
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.125*( 1.0 - diff )*(L + R + U + D);
}
else if (SGPT_BLEND_OPTION == 4) // VL-CB
{
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.25*( 1.0 - diff )*(L + R);
}
else if (SGPT_BLEND_OPTION == 5) // VL-CB-2
{
min_sample = min_s(min_sample, U, D);
max_sample = max_s(max_sample, U, D);
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.25*( 1.0 - diff )*(L + R);
}
else if (SGPT_BLEND_OPTION == 6) // VL-CB-Soft
{
min_sample = min(min_sample, min(min_s(D, DL, DR), min_s(U, UL, UR)));
max_sample = max(max_sample, max(max_s(D, DL, DR), max_s(U, UL, UR)));
diff *= (1.0 - SGPT_BLEND_LEVEL);
color = 0.5*( 1.0 + diff )*C + 0.25*( 1.0 - diff )*(L + R);
}
color = clamp(color, min_sample, max_sample);
vec3 col_L = 0.5*( C + L + contrast*( C - L ));
vec3 col_R = 0.5*( C + R + contrast*( C - R ));
color = mix(color, vec3(dot(abs(C-color), vec3(1.0, 1.0, 1.0))), SGPT_ADJUST_VIEW);
float contrast_L = dot(abs(C - col_L), Y);
float contrast_R = dot(abs(C - col_R), Y);
// Choose smaller contrast
vec3 color = contrast_R < contrast_L ? col_R : col_L;
color = SGPT_BLEND_OPTION > 0.5 ? clamp(color, min_sample, max_sample) : C;
color = SGPT_ADJUST_VIEW > 0.5 ? vec3(dot(abs(C-color), vec3(1.0, 1.0, 1.0))) : color;
FragColor = vec4(GAMMA_OUT(color), 1.0);
}