private ILightAsset TransformLight(PunctualLight o, string id, ReaderContext context)
{
return(new LightAsset(id));
}
private SamplerParameters?TransfromSamplerParameters(MaterialChannel materialChannel, ReaderContext context)
{
var materialChannelTexture = materialChannel.Texture;
if (materialChannelTexture == null)
{
return(null);
}
var primaryImage = materialChannelTexture.PrimaryImage;
if (primaryImage == null)
{
return(null);
}
return(new SamplerParameters
{
Image = context.Images[primaryImage.LogicalIndex],
TextureCoordinate = materialChannel.TextureCoordinate,
TextureTransform = TransformTextureTransform(materialChannel.TextureTransform)
});
}
private ICameraAsset TransformCamera(Camera o, string id, ReaderContext context)
{
return(new CameraAsset(id));
}
private IEnumerable <IShaderParameter> TransformShaderParameter(MaterialChannel materialChannel, ReaderContext context)
{
var parameter = materialChannel.Parameter;
switch (materialChannel.Key)
{
case "BaseColor":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.BaseColorTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <Vector4>(ShaderParameterKey.BaseColorFactor, parameter));
yield break;
case "Diffuse":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.DiffuseTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <Vector4>(ShaderParameterKey.DiffuseFactor, parameter));
yield break;
case "MetallicRoughness":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.MetallicRoughnessTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <float>(ShaderParameterKey.MetallicFactor, parameter.X));
yield return(new ShaderParameter <float>(ShaderParameterKey.RoughnessFactor, parameter.Y));
yield break;
case "SpecularGlossiness":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.SpecularGlossinessTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <Vector3>(ShaderParameterKey.SpecularFactor, new Vector3(parameter.X, parameter.Y, parameter.Z)));
yield return(new ShaderParameter <float>(ShaderParameterKey.GlossinessFactor, parameter.W));
yield break;
case "Normal":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.NormalTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <float>(ShaderParameterKey.NormalTextureScale, parameter.X));
yield break;
case "Occlusion":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.OcclusionTexture, samplerParameters.Value));
}
}
yield return(new ShaderParameter <float>(ShaderParameterKey.OcclusionTextureStrength, parameter.X));
yield break;
case "Emissive":
{
var samplerParameters = TransfromSamplerParameters(materialChannel, context);
if (samplerParameters.HasValue)
{
yield return(new ShaderParameter <SamplerParameters>(ShaderParameterKey.EmissiveTexture,
samplerParameters.Value));
}
}
{
yield return(new ShaderParameter <Vector3>(ShaderParameterKey.EmissiveFactor, new Vector3(parameter.X, parameter.Y, parameter.Z)));
}
yield break;
default:
throw new NotImplementedException($"Material channel {materialChannel.Key} is not supported yet");
}
}