Defining Lights

Overview

Light data are defined in <FragmentLightCtr> below <Lights>. Where there are multiple sets of light data, there are multiple <FragmentLightCtr> tags below the <Lights> tag. <FragmentLightCtr> contains the following light-related information:

Light Type

There are three light types, as listed below. The light type is specified by the LightKind attribute of the <FragmentLightCtr> tag.

Directional Light

When DirectionalLight is specified for the LightKind attribute, the light type is a directional light.

Point Light

When PointLight is specified for the LightKind attribute, the light type is a point light.

Spot Light

When SpotLight is specified for the LightKind attribute, the light type is a spot light.

Light SRT Information

This stores information about the light's position, rotation and scaling.

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Transform>

Light Color Information

The four following parameters are stored as the light color information. These color parameters are used for all the types of lights.

Ambient color

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Ambient>

Diffuse Color

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Diffuse>

Specular Color ０

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Specular0>

Specular Color １

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Specular1>

Light direction

The direction that the light is pointing is specified by a vector. This parameter is configured when specifying the direction of a directional light or a spot light.

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <Direction>

Attenuation Inside Spotlight Cone

This is the setting for the attenuation inside the spotlight cone. This specifies a table used with the <ReferenceLookupTableCtr> tag. This table is defined as a lookup table of cosine values of the angle formed from the light vector and the spot-direction vector.

<NintendoWareIntermediateFile>

  <GraphicsContentCtr>

    <Lights>

      <FragmentLightCtr>

        <AngleSampler>

          <ReferenceLookupTableCtr>

            <LookupTableSetContentReferenceCtr>

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