/// <summary>
/// Create a Particle definition.
/// </summary>
/// <param name="vgoParticle"></param>
/// <returns></returns>
protected virtual ParticleDefinition CreateParticleDefinition(VGO_materials_particle vgoParticle)
{
ParticleDefinition particleDefinition = new ParticleDefinition()
{
RenderMode = (UniStandardParticle.BlendMode)vgoParticle.renderMode,
ColorMode = (UniStandardParticle.ColorMode)vgoParticle.colorMode,
FlipBookMode = (UniStandardParticle.FlipBookMode)vgoParticle.flipBookMode,
CullMode = vgoParticle.cullMode,
SoftParticlesEnabled = vgoParticle.softParticlesEnabled,
SoftParticleFadeParams = ArrayConverter.ToVector4(vgoParticle.softParticleFadeParams),
CameraFadingEnabled = vgoParticle.cameraFadingEnabled,
CameraFadeParams = ArrayConverter.ToVector4(vgoParticle.cameraFadeParams),
DistortionEnabled = vgoParticle.distortionEnabled,
GrabTexture = GetTexture(UniStandardParticle.Utils.PropGrabTexture, vgoParticle.grabTextureIndex),
DistortionStrengthScaled = vgoParticle.distortionStrengthScaled,
DistortionBlend = vgoParticle.distortionBlend,
ColorAddSubDiff = ArrayConverter.ToColor(vgoParticle.colorAddSubDiff, gamma: true),
MainTex = GetTexture(UniStandardParticle.Utils.PropMainTex, vgoParticle.mainTexIndex),
MainTexSt = ArrayConverter.ToVector4(vgoParticle.mainTexSt),
Color = ArrayConverter.ToColor(vgoParticle.color, gamma: true),
Cutoff = vgoParticle.cutoff,
MetallicGlossMap = GetTexture(UniStandardParticle.Utils.PropMetallicGlossMap, vgoParticle.metallicGlossMapIndex),
Metallic = vgoParticle.metallic,
Glossiness = vgoParticle.glossiness,
BumpMap = GetTexture(UniStandardParticle.Utils.PropBumpMap, vgoParticle.bumpMapIndex),
BumpScale = vgoParticle.bumpScale,
LightingEnabled = vgoParticle.lightingEnabled,
EmissionEnabled = vgoParticle.emissionEnabled,
EmissionColor = ArrayConverter.ToColor(vgoParticle.emissionColor, gamma: true),
EmissionMap = GetTexture(UniStandardParticle.Utils.PropEmissionMap, vgoParticle.emissionMapIndex),
};
return(particleDefinition);
}
/// <summary>
/// Create a Particle material.
/// </summary>
/// <param name="m"></param>
/// <param name="textureManager"></param>
/// <returns></returns>
protected virtual glTFMaterial CreateParticleMaterial(Material m, TextureExportManager textureManager)
{
ParticleDefinition particleDefinition = UniStandardParticle.Utils.GetParticleParametersFromMaterial(m);
var vgoParticle = new VGO_materials_particle()
{
renderMode = (ParticleBlendMode)particleDefinition.RenderMode,
colorMode = (ParticleColorMode)particleDefinition.ColorMode,
flipBookMode = (ParticleFlipBookMode)particleDefinition.FlipBookMode,
cullMode = particleDefinition.CullMode,
softParticlesEnabled = particleDefinition.SoftParticlesEnabled,
softParticleFadeParams = particleDefinition.SoftParticleFadeParams.ToArray(),
cameraFadingEnabled = particleDefinition.CameraFadingEnabled,
cameraFadeParams = particleDefinition.CameraFadeParams.ToArray(),
distortionEnabled = particleDefinition.DistortionEnabled,
grabTextureIndex = -1,
distortionStrengthScaled = particleDefinition.DistortionStrengthScaled,
distortionBlend = particleDefinition.DistortionBlend,
colorAddSubDiff = particleDefinition.ColorAddSubDiff.linear.ToArray(),
mainTexIndex = -1,
mainTexSt = particleDefinition.MainTexSt.ToArray(),
color = particleDefinition.Color.linear.ToArray(),
cutoff = particleDefinition.Cutoff,
metallicGlossMapIndex = -1,
metallic = particleDefinition.Metallic,
glossiness = particleDefinition.Glossiness,
bumpMapIndex = -1,
bumpScale = particleDefinition.BumpScale,
lightingEnabled = particleDefinition.LightingEnabled,
emissionEnabled = particleDefinition.EmissionEnabled,
emissionColor = particleDefinition.EmissionColor.linear.ToArray(),
emissionMapIndex = -1,
};
// Textures
vgoParticle.grabTextureIndex = textureManager.CopyAndGetIndex(particleDefinition.GrabTexture, RenderTextureReadWrite.sRGB);
vgoParticle.mainTexIndex = textureManager.CopyAndGetIndex(particleDefinition.MainTex, RenderTextureReadWrite.sRGB);
vgoParticle.metallicGlossMapIndex = textureManager.CopyAndGetIndex(particleDefinition.MetallicGlossMap, RenderTextureReadWrite.sRGB);
vgoParticle.bumpMapIndex = textureManager.ConvertAndGetIndex(particleDefinition.BumpMap, new NormalConverter());
vgoParticle.emissionMapIndex = textureManager.CopyAndGetIndex(particleDefinition.EmissionMap, RenderTextureReadWrite.sRGB);
var material = new glTFMaterial();
material.name = m.name;
// Alpha Mode
switch (vgoParticle.renderMode)
{
case ParticleBlendMode.Opaque:
material.alphaMode = glTFBlendMode.OPAQUE.ToString();
break;
case ParticleBlendMode.Cutout:
material.alphaMode = glTFBlendMode.MASK.ToString();
break;
case ParticleBlendMode.Fade:
case ParticleBlendMode.Transparent:
case ParticleBlendMode.Additive:
case ParticleBlendMode.Subtractive:
case ParticleBlendMode.Modulate:
material.alphaMode = glTFBlendMode.BLEND.ToString();
break;
default:
break;
}
// Alpha Cutoff
if (vgoParticle.renderMode == ParticleBlendMode.Cutout)
{
material.alphaCutoff = vgoParticle.cutoff;
}
// Double Sided
switch (vgoParticle.cullMode)
{
case UnityEngine.Rendering.CullMode.Off:
material.doubleSided = true;
break;
case UnityEngine.Rendering.CullMode.Front:
case UnityEngine.Rendering.CullMode.Back:
material.doubleSided = false;
break;
default:
break;
}
// PBR Metallic Roughness
{
if (vgoParticle.color != null)
{
if (material.pbrMetallicRoughness == null)
{
material.pbrMetallicRoughness = new glTFPbrMetallicRoughness();
}
material.pbrMetallicRoughness.baseColorFactor = vgoParticle.color;
}
if (vgoParticle.mainTexIndex != -1)
{
if (material.pbrMetallicRoughness == null)
{
material.pbrMetallicRoughness = new glTFPbrMetallicRoughness();
}
material.pbrMetallicRoughness.baseColorTexture = new glTFMaterialBaseColorTextureInfo()
{
index = vgoParticle.mainTexIndex,
};
//material.pbrMetallicRoughness.metallicFactor = 1.0f;
//material.pbrMetallicRoughness.roughnessFactor = 1.0f;
}
}
// Normal Texture
if (vgoParticle.bumpMapIndex != -1)
{
material.normalTexture = new glTFMaterialNormalTextureInfo()
{
index = vgoParticle.bumpMapIndex,
};
}
// Emissive
if (vgoParticle.emissionEnabled)
{
material.emissiveFactor = vgoParticle.emissionColor;
if (vgoParticle.emissionMapIndex != -1)
{
material.emissiveTexture = new glTFMaterialEmissiveTextureInfo()
{
index = vgoParticle.emissionMapIndex,
};
}
}
// extensions
material.extensions = new glTFMaterial_extensions()
{
VGO_materials = new VGO_materials(m.shader.name),
VGO_materials_particle = vgoParticle,
};
if (m.shader.name == ShaderName.Particles_Standard_Unlit)
{
material.extensions.KHR_materials_unlit = new KHR_materials_unlit();
}
return(material);
}