librashader/librashader-runtime/src/semantics.rs

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use librashader_presets::{ShaderPassConfig, TextureConfig};
use librashader_reflect::reflect::semantics::{SemanticMap, TextureSemantics, UniformSemantic};
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use rustc_hash::FxHashMap;
pub type UniformSemanticsMap = FxHashMap<String, UniformSemantic>;
pub type TextureSemanticsMap = FxHashMap<String, SemanticMap<TextureSemantics>>;
pub fn insert_pass_semantics(
uniform_semantics: &mut UniformSemanticsMap,
texture_semantics: &mut TextureSemanticsMap,
config: &ShaderPassConfig,
) {
let Some(alias) = &config.alias else {
return;
};
// Ignore empty aliases
if alias.trim().is_empty() {
return;
}
let index = config.id as usize;
// PassOutput
texture_semantics.insert(
alias.clone(),
SemanticMap {
semantics: TextureSemantics::PassOutput,
index,
},
);
uniform_semantics.insert(
format!("{alias}Size"),
UniformSemantic::Texture(SemanticMap {
semantics: TextureSemantics::PassOutput,
index,
}),
);
// PassFeedback
texture_semantics.insert(
format!("{alias}Feedback"),
SemanticMap {
semantics: TextureSemantics::PassFeedback,
index,
},
);
uniform_semantics.insert(
format!("{alias}FeedbackSize"),
UniformSemantic::Texture(SemanticMap {
semantics: TextureSemantics::PassFeedback,
index,
}),
);
}
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pub fn insert_lut_semantics(
textures: &[TextureConfig],
uniform_semantics: &mut UniformSemanticsMap,
texture_semantics: &mut TextureSemanticsMap,
) {
for (index, texture) in textures.iter().enumerate() {
texture_semantics.insert(
texture.name.clone(),
SemanticMap {
semantics: TextureSemantics::User,
index,
},
);
uniform_semantics.insert(
format!("{}Size", texture.name),
UniformSemantic::Texture(SemanticMap {
semantics: TextureSemantics::User,
index,
}),
);
}
}