53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
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#include <mitsuba/render/texture.h>
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MTS_NAMESPACE_BEGIN
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/**
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* Checkerboard texture
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*/
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class Checkerboard : public Texture {
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public:
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Checkerboard(const Properties &props) : Texture(props) {
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m_reflectance = props.getSpectrum("reflectance", Spectrum(1.0f));
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}
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Checkerboard(Stream *stream, InstanceManager *manager)
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: Texture(stream, manager) {
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m_reflectance = Spectrum(stream);
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}
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void serialize(Stream *stream, InstanceManager *manager) const {
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Texture::serialize(stream, manager);
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m_reflectance.serialize(stream);
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}
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Spectrum getValue(const Intersection &its) const {
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int x = 2*(((int) its.uv.x) % 2) - 1, y = 2*(((int) its.uv.y) % 2) - 1;
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if (x*y == 1)
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return m_reflectance;
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else
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return Spectrum(0.0f);
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}
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bool usesRayDifferentials() const {
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return false;
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}
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Spectrum getAverage() const {
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return m_reflectance * .5f;
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}
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std::string toString() const {
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return "Checkerboard[]";
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}
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MTS_DECLARE_CLASS()
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protected:
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Spectrum m_reflectance;
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};
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MTS_IMPLEMENT_CLASS_S(Checkerboard, false, Texture)
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MTS_EXPORT_PLUGIN(Checkerboard, "Checkerboard texture");
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MTS_NAMESPACE_END
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