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postfx analític: nou shader + estructures chroma_min/max + scan_*

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- Substitueix postfx.frag per la versió analítica amb smoothstep
- PostFXUniforms 12→16 floats (64B, 4×vec4): afegeix chroma_min/max,
  scan_dark_ratio, scan_dark_floor, scan_edge_soft
- PostFXParams i PostFXPreset adopten els nous camps amb defaults d'AEE
- MSL extret a source/core/rendering/sdl3gpu/msl/{postfx_vert,postfx_frag,
  crtpi_frag}.msl.h (estil Rendering::Msl::kXxx)
- SPIR-V regenerat (postfx_frag_spv.h: 13648 bytes)
- options.cpp llegeix 'chroma' antic com compat (assigna a min i max);
  escriu els 6 presets per defecte (CRT/NTSC/CURVED/SCANLINES/SUBTLE/CRT LIVE)
  amb els valors d'aee_arcade

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Sergio Valor
2026-05-17 20:32:34 +02:00
parent 743d8c7877
commit 5e6a469d46
26 changed files with 10111 additions and 13608 deletions
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source/core/rendering/screen.cpp
+15 -35
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@@ -588,42 +588,24 @@ auto loadData(const std::string& filepath) -> std::vector<uint8_t> {
return Resource::Helper::loadFile(filepath);
}
void Screen::setLinearUpscale(bool linear) {
Options::video.supersampling.linear_upscale = linear;
if (shader_backend_ && shader_backend_->isHardwareAccelerated()) {
shader_backend_->setLinearUpscale(linear);
}
}
void Screen::setDownscaleAlgo(int algo) {
Options::video.supersampling.downscale_algo = algo;
if (shader_backend_ && shader_backend_->isHardwareAccelerated()) {
shader_backend_->setDownscaleAlgo(algo);
}
}
auto Screen::getSsTextureSize() const -> std::pair<int, int> {
if (!shader_backend_) { return {0, 0}; }
return shader_backend_->getSsTextureSize();
}
// Activa/desactiva el supersampling global (Ctrl+F4)
void Screen::toggleSupersampling() {
Options::video.supersampling.enabled = !Options::video.supersampling.enabled;
if (Options::video.shader.enabled && shader_backend_ && shader_backend_->isHardwareAccelerated()) {
applyCurrentPostFXPreset();
}
}
// Aplica los parámetros del preset actual al backend de shaders
void Screen::applyCurrentPostFXPreset() {
if (shader_backend_ && !Options::postfx_presets.empty()) {
const auto& p = Options::postfx_presets[static_cast<size_t>(Options::video.shader.current_postfx_preset)];
// Supersampling es un toggle global (Options::video.supersampling.enabled), no por preset.
// setOversample primero: puede recrear texturas antes de que setPostFXParams
// decida si hornear scanlines en CPU o aplicarlas en GPU.
shader_backend_->setOversample(Options::video.supersampling.enabled ? 3 : 1);
Rendering::PostFXParams params{.vignette = p.vignette, .scanlines = p.scanlines, .chroma = p.chroma, .mask = p.mask, .gamma = p.gamma, .curvature = p.curvature, .bleeding = p.bleeding, .flicker = p.flicker};
Rendering::PostFXParams params{
.vignette = p.vignette,
.scanlines = p.scanlines,
.chroma_min = p.chroma_min,
.chroma_max = p.chroma_max,
.mask = p.mask,
.gamma = p.gamma,
.curvature = p.curvature,
.bleeding = p.bleeding,
.flicker = p.flicker,
.scan_dark_ratio = p.scan_dark_ratio,
.scan_dark_floor = p.scan_dark_floor,
.scan_edge_soft = p.scan_edge_soft,
};
shader_backend_->setPostFXParams(params);
}
}
@@ -696,11 +678,9 @@ void Screen::initShaders() {
shader_backend_->init(window_, tex, "", "");
gpu_driver_ = shader_backend_->getDriverName();
// Propagar flags de vsync, integer scale, upscale y downscale al backend GPU
// Propagar flags de vsync e integer scale al backend GPU
shader_backend_->setVSync(Options::video.vertical_sync);
shader_backend_->setScaleMode(Options::video.integer_scale);
shader_backend_->setLinearUpscale(Options::video.supersampling.linear_upscale);
shader_backend_->setDownscaleAlgo(Options::video.supersampling.downscale_algo);
if (Options::video.shader.enabled) {
applyCurrentPostFXPreset();