| public static GetParameterIndexFromNameOrTag ( HoudiniEngineUnity.HEU_SessionBase session, HAPI_NodeId nodeID, Array parameters, string parameterName ) : int | ||
| session | HoudiniEngineUnity.HEU_SessionBase | |
| nodeID | HAPI_NodeId | |
| parameters | Array | |
| parameterName | string | |
| Résultat | int | |
// Gets the alpha of the material
// Checks ogl_use_alpha_transparency to make sure that it's enabled.
internal static bool GetMaterialAlpha(HEU_SessionBase session, HAPI_NodeId nodeID, HAPI_ParmInfo[] parameters, float defaultValue, out float alpha)
{
int foundUseParmId = HEU_ParameterUtility.GetParameterIndexFromNameOrTag(session, nodeID, parameters, HEU_Defines.MAT_OGL_TRANSPARENCY_ATTR_ENABLED);
if (foundUseParmId >= 0)
{
// Found a valid "use" parameter. Check if it is disabled.
int[] useValue = new int[1];
int intValuesIndex = parameters[foundUseParmId].intValuesIndex;
if (session.GetParamIntValues(nodeID, useValue, parameters[foundUseParmId].intValuesIndex, 1))
{
if (useValue.Length > 0 && useValue[0] == 0)
{
// We found the texture, but the use tag is disabled, so don't use it!
alpha = defaultValue;
return false;
}
}
}
if (HEU_ParameterUtility.GetParameterFloatValue(session, nodeID, parameters, HEU_Defines.MAT_OGL_ALPHA_ATTR, defaultValue, out alpha))
{
return true;
}
if (HEU_ParameterUtility.GetParameterFloatValue(session, nodeID, parameters, HEU_Defines.MAT_ALPHA_ATTR, defaultValue, out alpha))
{
return true;
}
if (HEU_ParameterUtility.GetParameterFloatValue(session, nodeID, parameters, HEU_Defines.MAT_OGL_TRANSPARENCY_ATTR, defaultValue, out alpha))
{
alpha = 1 - alpha;
return true;
}
alpha = defaultValue;
return false;
}
/// <summary>
/// For this object's _material, we update the shader attributes and
/// fetch the textures from Houdini.
/// </summary>
/// <param name="materialInfo">This material's info from Houdini</param>
/// <param name="assetCacheFolderPath">Path to asset's cache folder</param>
public void UpdateMaterialFromHoudini(HAPI_MaterialInfo materialInfo, string assetCacheFolderPath)
{
HEU_SessionBase session = HEU_SessionManager.GetOrCreateDefaultSession();
HAPI_NodeInfo nodeInfo = new HAPI_NodeInfo();
if (!session.GetNodeInfo(materialInfo.nodeId, ref nodeInfo))
{
return;
}
// Get all parameters of this material
HAPI_ParmInfo[] parmInfos = new HAPI_ParmInfo[nodeInfo.parmCount];
if (!HEU_GeneralUtility.GetArray1Arg(materialInfo.nodeId, session.GetParams, parmInfos, 0, nodeInfo.parmCount))
{
return;
}
// Assign transparency shader or non-transparent.
if (IsTransparentMaterial(session, materialInfo.nodeId, parmInfos))
{
_material.shader = HEU_MaterialFactory.FindPluginShader(HEU_PluginSettings.DefaultTransparentShader);
}
else
{
_material.shader = HEU_MaterialFactory.FindPluginShader(HEU_PluginSettings.DefaultStandardShader);
}
// Diffuse texture - render & extract
int diffuseMapParmIndex = HEU_ParameterUtility.GetParameterIndexFromNameOrTag(session, nodeInfo.id, parmInfos, HEU_Defines.MAT_OGL_TEX1_ATTR);
if (diffuseMapParmIndex < 0)
{
diffuseMapParmIndex = HEU_ParameterUtility.GetParameterIndexFromNameOrTag(session, nodeInfo.id, parmInfos, HEU_Defines.MAT_BASECOLOR_ATTR);
if (diffuseMapParmIndex < 0)
{
diffuseMapParmIndex = HEU_ParameterUtility.GetParameterIndexFromNameOrTag(session, nodeInfo.id, parmInfos, HEU_Defines.MAT_MAP_ATTR);
}
}
if (diffuseMapParmIndex >= 0 && diffuseMapParmIndex < parmInfos.Length)
{
string diffuseTextureFileName = GetTextureFileNameFromMaterialParam(session, materialInfo.nodeId, parmInfos[diffuseMapParmIndex]);
_material.mainTexture = HEU_MaterialFactory.RenderAndExtractImageToTexture(session, materialInfo, parmInfos[diffuseMapParmIndex].id, diffuseTextureFileName, assetCacheFolderPath);
}
// Normal map - render & extract texture
int normalMapParmIndex = HEU_ParameterUtility.GetParameterIndexFromNameOrTag(session, nodeInfo.id, parmInfos, HEU_Defines.MAT_OGL_NORMAL_ATTR);
if (normalMapParmIndex >= 0 && normalMapParmIndex < parmInfos.Length)
{
string normalTextureFileName = GetTextureFileNameFromMaterialParam(session, materialInfo.nodeId, parmInfos[normalMapParmIndex]);
Texture2D normalMap = HEU_MaterialFactory.RenderAndExtractImageToTexture(session, materialInfo, parmInfos[normalMapParmIndex].id, normalTextureFileName, assetCacheFolderPath);
if (normalMap != null)
{
_material.SetTexture(HEU_Defines.UNITY_SHADER_BUMP_MAP, normalMap);
}
}
// Assign shader properties
// Clamp shininess to non-zero as results in very hard shadows. Unity's UI does not allow zero either.
float shininess = HEU_ParameterUtility.GetParameterFloatValue(session, materialInfo.nodeId, parmInfos, HEU_Defines.MAT_OGL_ROUGH_ATTR, 0f);
_material.SetFloat(HEU_Defines.UNITY_SHADER_SHININESS, Mathf.Max(0.03f, 1.0f - shininess));
Color diffuseColor = HEU_ParameterUtility.GetParameterColor3Value(session, materialInfo.nodeId, parmInfos, HEU_Defines.MAT_OGL_DIFF_ATTR, Color.white);
diffuseColor.a = HEU_ParameterUtility.GetParameterFloatValue(session, materialInfo.nodeId, parmInfos, HEU_Defines.MAT_OGL_ALPHA_ATTR, 1f);
_material.SetColor(HEU_Defines.UNITY_SHADER_COLOR, diffuseColor);
Color specular = HEU_ParameterUtility.GetParameterColor3Value(session, materialInfo.nodeId, parmInfos, HEU_Defines.MAT_OGL_SPEC_ATTR, Color.black);
_material.SetColor(HEU_Defines.UNITY_SHADER_SPECCOLOR, specular);
}
