checkerboard texture¶
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class checkerboard_t : public wt::texture::texture_t
Simple checkerboard pattern.
Public Functions
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checkerboard_t(checkerboard_t&&) = default
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virtual ~checkerboard_t() noexcept = default
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inline virtual bool needs_interaction_footprint() const noexcept override
Returns TRUE for textures that make use of the surface interaction footprint data.
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inline virtual vec2_t resolution() const noexcept override
Returns texture resolution represented via \( \frac{\text{texels}}{\vec{uv}} \). May return an approximation. Can be infinite, e.g., for analytic textures. Can be 1, for constant textures.
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inline virtual std::shared_ptr<spectrum::spectrum_real_t> mean_spectrum() const noexcept override
Average spectrum of the texture. Returns
nullptrwhen an average spectrum cannot be computed.
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inline virtual std::optional<f_t> mean_value(wavenumber_t k) const noexcept override
Average value of the texture. Returns std::nullopt when an average value cannot be computed.
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inline virtual vec4_t get_RGBA(const texture_query_t &query) const noexcept override
Samples the texture. Returns filtered RGBA data, without spectral upsampling. Ignores
query.k. Only relevant for some textures.
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inline virtual vec2_t f(const texture_query_t &query) const noexcept override
Samples the texture. Returns spectrally upsampled (to wavenumber
query.k) result.- Returns:
Spectral luminance value and alpha (if any) pair.
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virtual scene::element::info_t description() const override
Public Static Functions
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static std::unique_ptr<texture_t> load(std::string id, scene::loader::loader_t *loader, const scene::loader::node_t &node, const wt::wt_context_t &context)
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checkerboard_t(checkerboard_t&&) = default