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migra postfx a aee_arcade i elimina supersampling/downsampling

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This commit is contained in:
Sergio Valor
2026-05-17 11:05:06 +02:00
parent 11eec8f222
commit bd5683d498
28 changed files with 3374 additions and 8026 deletions
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data/lang/ba_BA.json
-1
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@@ -83,7 +83,6 @@
"[SERVICE_MENU] SHADER": "Shader",
"[SERVICE_MENU] SHADER_DISABLED": "Desactivat",
"[SERVICE_MENU] SHADER_PRESET": "Preset",
"[SERVICE_MENU] SUPERSAMPLING": "Supermostreig",
"[SERVICE_MENU] VSYNC": "Sincronisme vertical",
"[SERVICE_MENU] INTEGER_SCALE": "Escalat sencer",
"[SERVICE_MENU] FILTER": "Filtre",
data/lang/en_UK.json
-1
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@@ -82,7 +82,6 @@
"[SERVICE_MENU] SHADER": "Shader",
"[SERVICE_MENU] SHADER_DISABLED": "Disabled",
"[SERVICE_MENU] SHADER_PRESET": "Preset",
"[SERVICE_MENU] SUPERSAMPLING": "Supersampling",
"[SERVICE_MENU] VSYNC": "V-Sync",
"[SERVICE_MENU] INTEGER_SCALE": "Integer Scale",
"[SERVICE_MENU] FILTER": "Filter",
data/lang/es_ES.json
-1
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@@ -82,7 +82,6 @@
"[SERVICE_MENU] SHADER": "Shader",
"[SERVICE_MENU] SHADER_DISABLED": "Desactivado",
"[SERVICE_MENU] SHADER_PRESET": "Preset",
"[SERVICE_MENU] SUPERSAMPLING": "Supersampling",
"[SERVICE_MENU] VSYNC": "Sincronismo vertical",
"[SERVICE_MENU] INTEGER_SCALE": "Escalado proporcional",
"[SERVICE_MENU] FILTER": "Filtro",
data/shaders/downscale.frag
-48
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@@ -1,48 +0,0 @@
#version 450
layout(location = 0) in vec2 v_uv;
layout(location = 0) out vec4 out_color;
layout(set = 2, binding = 0) uniform sampler2D source;
layout(set = 3, binding = 0) uniform DownscaleUniforms {
int algorithm; // 0 = Lanczos2 (ventana 2, ±2 taps), 1 = Lanczos3 (ventana 3, ±3 taps)
float pad0;
float pad1;
float pad2;
} u;
// Kernel Lanczos normalizado: sinc(t) * sinc(t/a) para |t| < a, 0 fuera.
float lanczos(float t, float a) {
t = abs(t);
if (t < 0.0001) { return 1.0; }
if (t >= a) { return 0.0; }
const float PI = 3.14159265358979;
float pt = PI * t;
return (a * sin(pt) * sin(pt / a)) / (pt * pt);
}
void main() {
vec2 src_size = vec2(textureSize(source, 0));
// Posición en coordenadas de texel (centros de texel en N+0.5)
vec2 p = v_uv * src_size;
vec2 p_floor = floor(p);
float a = (u.algorithm == 0) ? 2.0 : 3.0;
int win = int(a);
vec4 color = vec4(0.0);
float weight_sum = 0.0;
for (int j = -win; j <= win; j++) {
for (int i = -win; i <= win; i++) {
// Centro del texel (i,j) relativo a p_floor
vec2 tap_center = p_floor + vec2(float(i), float(j)) + 0.5;
vec2 offset = tap_center - p;
float w = lanczos(offset.x, a) * lanczos(offset.y, a);
color += texture(source, tap_center / src_size) * w;
weight_sum += w;
}
}
out_color = (weight_sum > 0.0) ? (color / weight_sum) : vec4(0.0, 0.0, 0.0, 1.0);
}
data/shaders/postfx.frag
+25 -13
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@@ -6,7 +6,9 @@
// xxd -i postfx.frag.spv > ../../source/core/rendering/sdl3gpu/postfx_frag_spv.h
//
// PostFXUniforms must match exactly the C++ struct in sdl3gpu_shader.hpp
// (8 floats, 32 bytes, std140/scalar layout).
// (16 floats = 4 × vec4 = 64 bytes, std140/scalar layout).
// IMPORTANT: Qualsevol canvi ací cal replicar-lo a mà a
// source/core/rendering/sdl3gpu/msl/postfx_frag.msl.h (no hi ha generador).
layout(location = 0) in vec2 v_uv;
layout(location = 0) out vec4 out_color;
@@ -24,8 +26,13 @@ layout(set = 3, binding = 0) uniform PostFXUniforms {
float bleeding;
float pixel_scale; // physical pixels per logical pixel (vh / tex_height_)
float time; // seconds since SDL init
float oversample; // supersampling factor (1.0 = off, 3.0 = 3×SS)
float flicker; // 0 = off, 1 = phosphor flicker ~50 Hz — 48 bytes total (3 × 16)
float flicker; // 0 = off, 1 = phosphor flicker ~50 Hz
float pad2; // padding per tancar vec4 #2
// vec4 #3 — paràmetres de scanlines (exposats per preset YAML)
float scan_dark_ratio; // fracció de subfila fosca per fila lògica (1/3 ≈ 0.333)
float scan_dark_floor; // multiplicador de brillantor de la subfila fosca
float scan_edge_soft; // 0 = step dur; 1 = suavitzat d'1 píxel físic (estil crtpi)
float pad3; // padding per tancar a 64 bytes (4 × vec4)
} u;
// YCbCr helpers for NTSC bleeding
@@ -69,11 +76,11 @@ void main() {
vec3 base = texture(scene, uv).rgb;
// Sangrado NTSC — difuminado horizontal de crominancia.
// step = 1 pixel lógico de juego en UV (corrige SS: textureSize.x = game_w * oversample).
// step = 1 pixel lógico de juego en UV.
vec3 colour;
if (u.bleeding > 0.0) {
float tw = float(textureSize(scene, 0).x);
float step = u.oversample / tw; // 1 pixel lógico en UV
float step = 1.0 / tw; // 1 pixel lógico en UV
vec3 ycc = rgb_to_ycc(base);
vec3 ycc_l2 = rgb_to_ycc(texture(scene, uv - vec2(2.0*step, 0.0)).rgb);
vec3 ycc_l1 = rgb_to_ycc(texture(scene, uv - vec2(1.0*step, 0.0)).rgb);
@@ -96,15 +103,20 @@ void main() {
colour = mix(colour, lin, u.gamma_strength);
}
// Scanlines — 1 pixel físico oscuro por fila lógica.
// Modelo sustractivo: las filas de scanline se oscurecen, las demás no cambian.
// Esto evita el efecto de sobrebrillo en contenido con colores vivos.
// Scanlines — tècnica dels 3 subpíxels verticals per píxel lògic (aee/projecte_2026):
// franja fosca ocupant `scan_dark_ratio` al final de cada fila lògica. La transició es
// suavitza amb smoothstep d'ample ≈ 1 píxel físic (estil crtpi: filtratge analític
// continu), controlat per `scan_edge_soft`. A 0 és equivalent al step dur antic.
if (u.scanline_strength > 0.0) {
float ps = max(1.0, round(u.pixel_scale));
float frac_in_row = fract(uv.y * u.screen_height);
float row_pos = floor(frac_in_row * ps);
float is_dark = step(ps - 1.0, row_pos);
float scan = mix(1.0, 0.0, is_dark);
float ps = max(u.pixel_scale, 1.0);
float sub = fract(uv.y * u.screen_height); // [0,1) dins la fila lògica
float dark_center = 1.0 - u.scan_dark_ratio * 0.5; // centre de la franja fosca
float d = abs(sub - dark_center);
d = min(d, 1.0 - d); // wrap a la fila següent
float half_width = u.scan_dark_ratio * 0.5;
float softness = u.scan_edge_soft * 0.5 / ps; // mig píxel físic a cada costat
float band = 1.0 - smoothstep(half_width - softness, half_width + softness, d);
float scan = mix(1.0, u.scan_dark_floor, band);
colour *= mix(1.0, scan, u.scanline_strength);
}
data/shaders/upscale.frag
-15
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@@ -1,15 +0,0 @@
#version 450
// Vulkan GLSL fragment shader — Nearest-neighbour upscale pass
// Used as the first render pass when supersampling is active.
// Compile: glslc upscale.frag -o upscale.frag.spv
// xxd -i upscale.frag.spv > ../../source/core/rendering/sdl3gpu/upscale_frag_spv.h
layout(location = 0) in vec2 v_uv;
layout(location = 0) out vec4 out_color;
layout(set = 2, binding = 0) uniform sampler2D scene;
void main() {
out_color = texture(scene, v_uv);
}