protected static bool ParseBindingType( string parameters, MaterialScriptContext context )
{
switch ( parameters.ToLower() )
{
case "texture":
context.textureUnit.BindingType = TextureBindingType.Fragment;
break;
case "vertex":
context.textureUnit.BindingType = TextureBindingType.Vertex;
break;
default:
LogParseError( context, "Invalid binding type option - {0}", parameters );
break;
}
return false;
}
protected static bool ParseAmbient( string parameters, MaterialScriptContext context )
{
string[] values = parameters.Split( new char[] { ' ', '\t' } );
// must be 1, 3 or 4 parameters
if ( values.Length == 1 )
{
if ( values[ 0 ].ToLower() == "vertexcolour" ||
values[ 0 ].ToLower() == "vertexcolor" )
{
context.pass.VertexColorTracking |= TrackVertexColor.Ambient;
}
else
{
LogParseError( context, "Bad ambient attribute, single parameter flag must be 'vertexcolour' or 'vertexcolor'." );
}
}
else if ( values.Length == 3 || values.Length == 4 )
{
context.pass.Ambient = StringConverter.ParseColor( values );
context.pass.VertexColorTracking &= ~TrackVertexColor.Ambient;
}
else
{
LogParseError( context, "Bad ambient attribute, wrong number of parameters (expected 1, 3 or 4)." );
}
return false;
}
protected static bool ParseCullSoftware( string parameters, MaterialScriptContext context )
{
// lookup the real enum equivalent to the script value
object val = ScriptEnumAttribute.Lookup( parameters, typeof( ManualCullingMode ) );
// if a value was found, assign it
if ( val != null )
{
context.pass.ManualCullingMode = (ManualCullingMode)val;
}
else
{
string legalValues = ScriptEnumAttribute.GetLegalValues( typeof( ManualCullingMode ) );
LogParseError( context, "Bad cull_software attribute, valid parameters are {0}.", legalValues );
}
return false;
}
protected static bool ParseLodDistances( string parameters, MaterialScriptContext context )
{
context.material.LodStrategy = LodStrategyManager.Instance.GetStrategy( DistanceLodStrategy.StrategyName );
string[] values = parameters.Split( new char[] { ' ', '\t' } );
LodValueList lodDistances = new LodValueList();
for ( int i = 0; i < values.Length; i++ )
{
lodDistances.Add( StringConverter.ParseFloat( values[ i ] ) );
}
context.material.SetLodLevels( lodDistances );
return false;
}
protected static bool ParseLodIndex( string parameters, MaterialScriptContext context )
{
context.technique.LodIndex = int.Parse( parameters );
return false;
}
protected static bool ParseTextureUnit( string parameters, MaterialScriptContext context )
{
// create a new texture unit
context.textureUnit = context.pass.CreateTextureUnitState();
// get the texture unit name
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length > 0 && values[ 0 ].Length > 0 )
context.textureUnit.Name = values[ 0 ];
// update section
context.section = MaterialScriptSection.TextureUnit;
// increase texture unit level depth
context.stateLev++;
// return true because this must be followed by a {
return true;
}
protected static bool ParseSetTextureAlias( string parameters, MaterialScriptContext context )
{
// get the texture alias
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 2 )
{
LogParseError( context, "Invalid set_texture_alias entry - expected 2 parameters." );
return true;
}
// update section
if ( context.textureAliases.ContainsKey( values[ 0 ] ) )
{
context.textureAliases[ values[ 0 ] ] = values[ 1 ];
}
else
{
context.textureAliases.Add( values[ 0 ], values[ 1 ] );
}
return false;
}
protected static bool ParseProgramMorphAnimation( string parameters, MaterialScriptContext context )
{
context.programDef.supportsMorphAnimation = bool.Parse( parameters );
return false;
}
protected static bool ParseProgramPoseAnimation( string parameters, MaterialScriptContext context )
{
context.programDef.poseAnimationCount = ushort.Parse( parameters );
return false;
}
protected static bool ParseProgramSource( string parameters, MaterialScriptContext context )
{
// source filename, preserve case
context.programDef.source = parameters;
return false;
}
protected static bool ParseProgramSyntax( string parameters, MaterialScriptContext context )
{
context.programDef.syntax = parameters.ToLower();
return false;
}
protected static bool ParseParamNamedAuto( string parameters, MaterialScriptContext context )
{
// skip this if the program is not supported or could not be found
if ( context.program == null || !context.program.IsSupported )
{
return false;
}
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 2 && values.Length != 3 )
{
LogParseError( context, "Invalid param_named_auto attribute - expected 2 or 3 parameters." );
return false;
}
// get start index
try
{
int index = context.programParams.GetParamIndex( values[ 0 ] );
ProcessAutoProgramParam( index, "param_named_auto", values, context );
}
catch ( Exception ex )
{
LogParseError( context, "Invalid param_named_auto attribute - {0}.", ex.Message );
return false;
}
return false;
}
protected static bool ParseParamIndexedAuto( string parameters, MaterialScriptContext context )
{
// skip this if the program is not supported or could not be found
if ( context.program == null || !context.program.IsSupported )
{
return false;
}
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 2 && values.Length != 3 )
{
LogParseError( context, "Invalid param_indexed_auto attribute - expected at 2 or 3 parameters." );
return false;
}
// get start index
int index = int.Parse( values[ 0 ] );
ProcessAutoProgramParam( index, "param_indexed_auto", values, context );
return false;
}
protected static bool ParseWaveXForm( string parameters, MaterialScriptContext context )
{
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 6 )
{
LogParseError( context, "Bad wave_xform attribute, wrong number of parameters (expected 6)." );
return false;
}
TextureTransform transType = 0;
WaveformType waveType = 0;
// check the transform type
object val = ScriptEnumAttribute.Lookup( values[ 0 ], typeof( TextureTransform ) );
if ( val == null )
{
string legalValues = ScriptEnumAttribute.GetLegalValues( typeof( TextureTransform ) );
LogParseError( context, "Bad wave_xform attribute, valid transform type values are {0}.", legalValues );
return false;
}
transType = (TextureTransform)val;
// check the wavetype
val = ScriptEnumAttribute.Lookup( values[ 1 ], typeof( WaveformType ) );
if ( val == null )
{
string legalValues = ScriptEnumAttribute.GetLegalValues( typeof( WaveformType ) );
LogParseError( context, "Bad wave_xform attribute, valid waveform type values are {0}.", legalValues );
return false;
}
waveType = (WaveformType)val;
// set the transform animation
context.textureUnit.SetTransformAnimation(
transType,
waveType,
StringConverter.ParseFloat( values[ 2 ] ),
StringConverter.ParseFloat( values[ 3 ] ),
StringConverter.ParseFloat( values[ 4 ] ),
StringConverter.ParseFloat( values[ 5 ] ) );
return false;
}
protected static bool ParseTechnique( string parameters, MaterialScriptContext context )
{
// create a new technique
context.technique = context.material.CreateTechnique();
// update section
context.section = MaterialScriptSection.Technique;
// increate technique level depth
context.techLev++;
// get the technique name
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length > 0 && values[ 0 ].Length > 0 )
context.technique.Name = values[ 0 ];
// return true because this must be followed by a {
return true;
}
protected static bool ParseDefaultParams( string parameters, MaterialScriptContext context )
{
context.section = MaterialScriptSection.DefaultParameters;
// should be a brace next
return true;
}
protected static bool ParsePass( string parameters, MaterialScriptContext context )
{
// get the pass name
string[] values = parameters.Split( new char[] { ' ', '\t' } );
// if params is not empty then see if the pass name already exists
if ( values.Length > 0 && values[ 0 ].Length > 0 && context.technique.PassCount > 0 )
{
// find the pass with name = params
Pass foundPass = context.technique.GetPass( values[ 0 ] );
if ( foundPass != null )
context.passLev = foundPass.Index;
else
// name was not found so a new pass is needed
// position pass level to the end index
// a new pass will be created later on
context.passLev = context.technique.PassCount;
}
else
{
// increase the pass level depth;
context.passLev++;
}
if ( context.technique.PassCount > context.passLev )
{
context.pass = context.technique.GetPass( context.passLev );
}
else
{
// create a new pass
context.pass = context.technique.CreatePass();
if ( values.Length > 0 && values[ 0 ].Length > 0 )
context.pass.Name = values[ 0 ];
}
// update section
context.section = MaterialScriptSection.Pass;
// return true because this must be followed by a {
return true;
}
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <param name="commandName"></param>
/// <param name="parameters"></param>
/// <param name="context"></param>
protected static void ProcessManualProgramParam( int index, string commandName, string[] parameters, MaterialScriptContext context )
{
// NB we assume that the first element of vecparams is taken up with either
// the index or the parameter name, which we ignore
int dims, roundedDims;
bool isFloat = false;
string type = parameters[ 1 ].ToLower();
if ( type == "matrix4x4" )
{
dims = 16;
isFloat = true;
}
else if ( type.IndexOf( "float" ) != -1 )
{
if ( type == "float" )
{
dims = 1;
}
else
{
// the first 5 letters are "float", get the dim indicator at the end
// this handles entries like 'float4'
dims = int.Parse( type.Substring( 5 ) );
}
isFloat = true;
}
else if ( type.IndexOf( "int" ) != -1 )
{
if ( type == "int" )
{
dims = 1;
}
else
{
// the first 5 letters are "int", get the dim indicator at the end
dims = int.Parse( type.Substring( 3 ) );
}
}
else
{
LogParseError( context, "Invalid {0} attribute - unrecognized parameter type {1}.", commandName, type );
return;
}
// make sure we have enough params for this type's size
if ( parameters.Length != 2 + dims )
{
LogParseError( context, "Invalid {0} attribute - you need {1} parameters for a parameter of type {2}", commandName, 2 + dims, type );
return;
}
// Round dims to multiple of 4
if ( dims % 4 != 0 )
{
roundedDims = dims + 4 - ( dims % 4 );
}
else
{
roundedDims = dims;
}
int i = 0;
// now parse all the values
if ( isFloat )
{
float[] buffer = new float[ roundedDims ];
// do specified values
for ( i = 0; i < dims; i++ )
{
buffer[ i ] = StringConverter.ParseFloat( parameters[ i + 2 ] );
}
// fill up to multiple of 4 with zero
for ( ; i < roundedDims; i++ )
{
buffer[ i ] = 0.0f;
}
context.programParams.SetConstant( index, buffer );
}
else
{
int[] buffer = new int[ roundedDims ];
// do specified values
for ( i = 0; i < dims; i++ )
{
buffer[ i ] = int.Parse( parameters[ i + 2 ] );
}
// fill up to multiple of 4 with zero
for ( ; i < roundedDims; i++ )
{
buffer[ i ] = 0;
}
context.programParams.SetConstant( index, buffer );
}
}
protected static bool ParseTextureAlias( string parameters, MaterialScriptContext context )
{
Debug.Assert( context.textureUnit != null );
// get the texture alias
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 1 )
{
LogParseError( context, "Invalid texture_alias entry - expected 1 parameter." );
return true;
}
// update section
context.textureUnit.TextureNameAlias = values[ 0 ];
return false;
}
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <param name="commandName"></param>
/// <param name="parameters"></param>
/// <param name="context"></param>
protected static void ProcessAutoProgramParam( int index, string commandName, string[] parameters, MaterialScriptContext context )
{
bool extras = false;
object val = ScriptEnumAttribute.Lookup( parameters[ 1 ], typeof( GpuProgramParameters.AutoConstantType ) );
if ( val != null )
{
bool isFloat = false;
GpuProgramParameters.AutoConstantType constantType = (GpuProgramParameters.AutoConstantType)val;
// these types require extra data
if ( constantType == GpuProgramParameters.AutoConstantType.LightDiffuseColor ||
constantType == GpuProgramParameters.AutoConstantType.LightSpecularColor ||
constantType == GpuProgramParameters.AutoConstantType.LightAttenuation ||
constantType == GpuProgramParameters.AutoConstantType.LightPosition ||
constantType == GpuProgramParameters.AutoConstantType.LightDirection ||
constantType == GpuProgramParameters.AutoConstantType.LightPositionObjectSpace ||
constantType == GpuProgramParameters.AutoConstantType.LightDirectionObjectSpace ||
constantType == GpuProgramParameters.AutoConstantType.Custom )
{
extras = true;
isFloat = false;
}
else if ( constantType == GpuProgramParameters.AutoConstantType.Time_0_X ||
constantType == GpuProgramParameters.AutoConstantType.SinTime_0_X )
{
extras = true;
isFloat = true;
}
// do we require extra data for this parameter?
if ( extras )
{
if ( parameters.Length != 3 )
{
LogParseError( context, "Invalid {0} attribute - Expected 3 parameters.", commandName );
return;
}
}
if ( isFloat && extras )
context.programParams.SetAutoConstant( index, constantType, float.Parse( parameters[ 2 ] ) );
else if ( extras )
context.programParams.SetAutoConstant( index, constantType, int.Parse( parameters[ 2 ] ) );
else if ( constantType == GpuProgramParameters.AutoConstantType.Time )
{
if ( parameters.Length == 3 )
context.programParams.SetAutoConstant( index, constantType, float.Parse( parameters[ 2 ] ) );
else
context.programParams.SetAutoConstant( index, constantType, 1.0f );
}
else
context.programParams.SetAutoConstant( index, constantType, 0 );
}
else
{
string legalValues = ScriptEnumAttribute.GetLegalValues( typeof( GpuProgramParameters.AutoConstantType ) );
LogParseError( context, "Bad auto gpu program param - Invalid param type '{0}', valid values are {1}.", parameters[ 1 ], legalValues );
return;
}
}
protected static bool ParseLodStrategy( string parameters, MaterialScriptContext context )
{
LodStrategy lodStrategy = LodStrategyManager.Instance.GetStrategy( parameters );
if ( lodStrategy == null )
{
LogParseError( context, "Bad lod_strategy attribute, , available lod strategy name expected." );
}
context.material.LodStrategy = lodStrategy;
return false;
}
/// <summary>
/// Helper method for logging parser errors.
/// </summary>
/// <param name="context">Current parsing context.</param>
/// <param name="error">Error message.</param>
/// <param name="substitutions">Items to sub in for the error message, if the error contains them.</param>
protected static void LogParseError( MaterialScriptContext context, string error, params object[] substitutions )
{
StringBuilder errorBuilder = new StringBuilder();
// log material name only if filename not specified
if ( context.filename == null && context.material != null )
{
errorBuilder.Append( "Error in material " );
errorBuilder.Append( context.material.Name );
errorBuilder.Append( " : " );
errorBuilder.AppendFormat( error, substitutions );
}
else
{
if ( context.material != null )
{
errorBuilder.Append( "Error in material " );
errorBuilder.Append( context.material.Name );
errorBuilder.AppendFormat( " at line {0} ", context.lineNo );
errorBuilder.AppendFormat( " of {0}: ", context.filename );
errorBuilder.AppendFormat( error, substitutions );
}
else
{
errorBuilder.AppendFormat( "Error at line {0} ", context.lineNo );
errorBuilder.AppendFormat( " of {0}: ", context.filename );
errorBuilder.AppendFormat( error, substitutions );
}
}
LogManager.Instance.Write( errorBuilder.ToString() );
}
protected static bool ParseTransparencyCastsShadows( string parameters, MaterialScriptContext context )
{
if ( parameters != "on" && parameters != "off" )
{
LogParseError( context, "Bad transparency_casts_shadows attribute, valid parameters are 'on' or 'off'." );
}
context.material.TransparencyCastsShadows = StringConverter.ParseBool( parameters );
return false;
}
/// <summary>
/// Parse custom GPU program parameters.
/// </summary>
/// <remarks>
/// This one is called explicitly, and is not added to any parser list.
/// </remarks>
protected static bool ParseProgramCustomParameter( string parameters, MaterialScriptContext context )
{
// This params object does not have the command stripped
// Lower case the command, but not the value incase it's relevant
// Split only up to first delimiter, program deals with the rest
string[] values = StringConverter.Split( parameters, new char[] { ' ', '\t' }, 2 );
if ( values.Length != 2 )
{
LogParseError( context, "Invalid custom program parameter entry; there must be a parameter name and at least one value." );
return false;
}
context.programDef.customParameters.Add( new KeyValuePair<string, string>( values[ 0 ], values[ 1 ] ) );
return false;
}
protected static bool ParseScheme( string parameters, MaterialScriptContext context )
{
context.technique.SchemeName = parameters;
return false;
}
protected static bool ParseMaterial( string parameters, MaterialScriptContext context )
{
// check params for reference to parent material to copy from
// syntax: material name : parentMaterialName
// check params for a colon after the first name and extract the parent name
string[] values = parameters.Split( new char[] { ':' } );
Material basematerial = null;
// create a brand new material
if ( values.Length >= 2 )
{
// if a second parameter exists then assume its the name of the base material
// that this new material should clone from
values[ 1 ] = values[ 1 ].Trim();
// make sure base material exists
basematerial = (Material)MaterialManager.Instance.GetByName( values[ 1 ] );
// if it doesn't exist then report error in log and just create a new material
if ( basematerial == null )
{
LogParseError( context, "parent material:" + values[ 1 ] + " not found for new material:" + values[ 0 ] );
}
}
string materialName = values[ 0 ].Trim();
context.material = (Material)MaterialManager.Instance.Create( materialName, context.groupName );
if ( basematerial != null )
{
// copy parent material details to new material
basematerial.CopyTo( context.material, false );
}
else
{
// remove pre-created technique from defaults
context.material.RemoveAllTechniques();
}
context.material.Origin = context.filename;
// update section
context.section = MaterialScriptSection.Material;
// return true because this must be followed by a {
return true;
}
protected static bool ParseColorWrite( string parameters, MaterialScriptContext context )
{
switch ( parameters.ToLower() )
{
case "on":
context.pass.ColorWriteEnabled = true;
break;
case "off":
context.pass.ColorWriteEnabled = false;
break;
default:
LogParseError( context, "Bad color_write attribute, valid parameters are 'on' or 'off'." );
break;
}
return false;
}
protected static bool ParseFragmentProgram( string parameters, MaterialScriptContext context )
{
// update section
context.section = MaterialScriptSection.Program;
// create new program definition-in-progress
context.programDef = new MaterialScriptProgramDefinition();
context.programDef.progType = GpuProgramType.Fragment;
context.programDef.supportsSkeletalAnimation = false;
context.programDef.supportsMorphAnimation = false;
context.programDef.poseAnimationCount = 0;
// get name and language code
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length != 2 )
{
LogParseError( context, "Invalid fragment_program entry - expected 2 parameters." );
return true;
}
// name, preserve case
context.programDef.name = values[ 0 ];
// language code, make lower case
context.programDef.language = values[ 1 ].ToLower();
// return true, because this must be followed by a {
return true;
}
protected static bool ParseDepthBias( string parameters, MaterialScriptContext context )
{
string[] values = parameters.Split( new char[] { ' ', '\t' } );
float constantBias = float.Parse( values[ 0 ] );
float slopeScaleBias = 0.0f;
if ( values.Length > 1 )
{
slopeScaleBias = float.Parse( values[ 1 ] );
}
context.pass.SetDepthBias( constantBias, slopeScaleBias );
return false;
}
protected static bool ParseTexture( string parameters, MaterialScriptContext context )
{
string[] values = parameters.Split( new char[] { ' ', '\t' } );
if ( values.Length > 5 )
{
LogParseError( context, "Invalid texture attribute - expecting 5 parameters or less." );
return false;
}
// use 2d as default if anything goes wrong
TextureType texType = TextureType.TwoD;
int mipmaps = (int)TextureMipmap.Default; // When passed to TextureManager::load, this means default to default number of mipmaps
bool isAlpha = false;
bool hwGamma = false;
PixelFormat desiredFormat = PixelFormat.Unknown;
for ( int p = 1; p < values.Length; p++ )
{
switch ( values[ p ].ToLower() )
{
case "1d":
texType = TextureType.OneD;
break;
case "2d":
texType = TextureType.TwoD;
break;
case "3d":
texType = TextureType.ThreeD;
break;
case "cubic":
texType = TextureType.CubeMap;
break;
case "unlimited":
mipmaps = (int)TextureMipmap.Unlimited;
break;
case "alpha":
isAlpha = true;
break;
case "gamma":
hwGamma = true;
break;
default:
int num;
if ( StringConverter.ParseInt( values[ p ], out num ) )
{
mipmaps = num;
}
else if ( ( desiredFormat = PixelUtil.GetFormatFromName( values[ p ], true, false ) ) != PixelFormat.Unknown )
{
// Nothing to do here.
}
else
{
LogParseError( context, "Invalid texture option - " + values[ p ] + "." );
}
break;
}
}
context.textureUnit.SetTextureName( values[ 0 ], texType );
context.textureUnit.MipmapCount = mipmaps;
context.textureUnit.IsAlpha = isAlpha;
context.textureUnit.DesiredFormat = desiredFormat;
context.textureUnit.IsHardwareGammaEnabled = hwGamma;
return false;
}
