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genmdl.py
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#!/usr/bin/env python
'''
Generate MDL implementation directory based on MaterialX nodedefs
'''
import os
import sys
os.environ['PYTHONIOENCODING'] = 'utf-8'
import MaterialX as mx
def usage():
print ('genmdl.py: Generate implementation directory for mdl based on existing MaterialX nodedefs in stdlib')
print ('Usage: genmdl.py <library search path> [<module name> <version>]')
print ('- A new directory called "library/stdlib/genmdl/materialx" will be created with two files added:')
print (' - <module_name>.ref_mdl: Module with signature stubs for each MaterialX nodedef')
print (' - <module_name>_genmdl_impl.ref_mtlx: MaterialX nodedef implementation mapping file')
print ('- By default <module_name>="mymodule" and <version>="1.6"')
def _getSubDirectories(libraryPath):
return [name for name in os.listdir(libraryPath)
if os.path.isdir(os.path.join(libraryPath, name))]
def _getMTLXFilesInDirectory(path):
for file in os.listdir(path):
if file.endswith('.mtlx'):
yield file
def _loadLibrary(file, doc):
libDoc = mx.createDocument()
mx.readFromXmlFile(libDoc, file)
libDoc.setSourceUri(file)
doc.importLibrary(libDoc)
def _loadLibraries(doc, searchPath, libraryPath):
librarySubPaths = _getSubDirectories(libraryPath)
librarySubPaths.append(libraryPath)
for path in librarySubPaths:
filenames = _getMTLXFilesInDirectory(os.path.join(libraryPath, path))
for filename in filenames:
filePath = os.path.join(libraryPath, os.path.join(path, filename))
_loadLibrary(filePath, doc)
def _writeHeader(file, version):
file.write('mdl ' + version + ';\n')
file.write('using core import *;\n')
IMPORT_LIST = { '::anno::*', '::base::*', '.::cm::*', '::math::*', '::state::*', '::tex::*', '::state::*', '.::vectormatrix::*', '.::hsv::*', '.::noise::*'}
# To verify what are the minimal imports required
for i in IMPORT_LIST:
file.write('import' + i + ';\n')
file.write('\n\n')
file.write('// Helper function mapping texture node addressmodes to MDL wrap modes\n')
file.write('::tex::wrap_mode map_addressmode( mx_addressmode_type value ) {\n')
file.write(' switch (value) {\n')
file.write(' case mx_addressmode_type_clamp:\n')
file.write(' return ::tex::wrap_clamp;\n')
file.write(' case mx_addressmode_type_mirror:\n')
file.write(' return ::tex::wrap_mirrored_repeat;\n')
file.write(' default:\n')
file.write( ' return ::tex::wrap_repeat;\n')
file.write(' }\n')
file.write('}\n\n')
def _mapGeomProp(geomprop):
outputValue = ''
if len(geomprop):
if geomprop.find('UV') >= 0:
outputValue = 'mx_swizzle_xy(::state::texture_coordinate(0))'
elif geomprop.find('Pobject') >= 0:
outputValue = '::state::transform_point(::state::coordinate_internal,::state::coordinate_object,::state::position())'
elif geomprop.find('PWorld') >= 0:
outputValue = '::state::transform_point(::state::coordinate_internal,::state::coordinate_world,::state::position())'
elif geomprop.find('Nobject') >= 0:
outputValue = '::state::transform_normal(::state::coordinate_internal,::state::coordinate_object,::state::normal())'
elif geomprop.find('Nworld') >= 0:
outputValue = '::state::transform_normal(::state::coordinate_internal,::state::coordinate_world,::state::normal())'
elif geomprop.find('Tobject') >= 0:
outputValue = '::state::transform_vector(::state::coordinate_internal,::state::coordinate_object,::state::texture_tangent_u(0))'
elif geomprop.find('Tworld') >= 0:
outputValue = 'state::transform_vector(::state::coordinate_internal,::state::coordinate_world,::state::texture_tangent_u(0))'
elif geomprop.find('Bobject') >= 0:
outputValue = 'state::transform_vector(::state::coordinate_internal,::state::coordinate_object,::state::texture_tangent_v(0))'
elif geomprop.find('Bworld') >= 0:
outputValue = '::state::transform_vector(::state::coordinate_internal,::state::coordinate_world,::state::texture_tangent_v(0))'
return outputValue
def _writeValueAssignment(file, outputValue, outputType, writeEmptyValues):
# Mapping of types to initializers
assignMap = dict()
assignMap['float2[<N>]'] = 'float2[]'
if outputType == 'color4':
outputType = 'mk_color4'
elif outputType in assignMap:
outputType = assignMap[outputType]
writeEmptyValues = True
if len(outputValue) or writeEmptyValues:
file.write(' = ')
if outputType:
file.write(outputType + '(')
if outputType == 'string':
file.write('"')
file.write(outputValue)
if outputType == 'string':
file.write('"')
if outputType:
file.write(')')
def _mapType(typeName, typeMap, functionName):
if 'mx_constant_filename' == functionName:
return 'string'
elif ('transformpoint' in functionName) or ('transformvector' in functionName) or ('transformnormal' in functionName):
if typeName == 'string':
return 'mx_coordinatespace_type'
if typeName in typeMap:
return typeMap[typeName]
return typeName
INDENT = '\t'
SPACE = ' '
QUOTE = '"'
FUNCTION_PREFIX = 'mx_'
FUNCTION_PARAMETER_PREFIX = 'mxp_'
# Basic template for writing out logic for "image" node definition
def _writeImageImplementation(file, outputType):
file.write(INDENT + 'if ( mxp_uaddressmode == mx_addressmode_type_constant\n')
file.write(INDENT + ' && ( mxp_texcoord.x < 0.0 || mxp_texcoord.x > 1.0))\n')
file.write(INDENT + INDENT + 'return mxp_default;\n')
file.write(INDENT + 'if ( mxp_vaddressmode == mx_addressmode_type_constant\n')
file.write(INDENT + ' && ( mxp_texcoord.y < 0.0 || mxp_texcoord.y > 1.0))\n')
file.write(INDENT + INDENT + 'return mxp_default;\n\n')
file.write(INDENT + outputType + ' returnValue')
isColor4 = (outputType == 'color4')
if isColor4:
outputType = 'float4'
outputType = 'mk_color4( ::tex::lookup_' + outputType
else:
outputType = '::tex::lookup_' + outputType
outputValue = 'tex: mxp_file, \n' \
+ INDENT*6 + 'coord: mxp_texcoord,\n' \
+ INDENT*6 + 'wrap_u: map_addressmode(mxp_uaddressmode),\n' \
+ INDENT*6 + 'wrap_v: map_addressmode(mxp_vaddressmode)'
_writeValueAssignment(file, outputValue, outputType, True)
if isColor4:
file.write(')')
file.write(';\n')
file.write(INDENT + 'return returnValue;\n')
def _writeOneArgumentFunc(file, outputType, functionName):
if outputType == 'color4':
file.write(INDENT + 'return mk_color4(' + functionName + '(mk_float4(mxp_in)));\n')
elif outputType == 'color':
file.write(INDENT + 'return color(' + functionName + '(mk_float3(mxp_in)));\n')
else:
file.write(INDENT + 'return ' + functionName + '(mxp_in);\n')
def _writeOperatorFunc(file, outputType, arg1, functionName, arg2):
if outputType == 'color4':
file.write(INDENT + 'return mk_color4(mk_float4(' + arg1 +') ' + functionName + ' mk_float4(' + arg2 + '));\n')
elif outputType == 'float3x3' or outputType == 'float4x4':
file.write(INDENT + 'return ' + outputType + '(' + arg1 + ') ' + functionName + ' ' + outputType + '(' + arg2 + ');\n')
else:
file.write(INDENT + 'return ' + arg1 + ' ' + functionName + ' ' + arg2 + ';\n')
def _writeTwoArgumentFunc(file, outputType, functionName, arg1="mxp_in1", arg2="mxp_in2"):
if outputType == 'color4':
file.write(INDENT + 'return mk_color4(' + functionName + '(mk_float4(' + arg1 + '), mk_float4(' + arg2 + ')));\n')
elif outputType == 'color':
file.write(INDENT + 'return color(' + functionName + '(float3(' + arg1 + '), float3(' + arg2 + ')));\n')
else:
file.write(INDENT + 'return ' + functionName + '(' + arg1 + ', ' + arg2 + ');\n')
def _writeThreeArgumentFunc(file, outputType, functionName, arg1, arg2, arg3):
if outputType == 'color4':
file.write(INDENT + 'return mk_color4(' + functionName + '(mk_float4(' + arg1 + '), mk_float4(' + arg2 + '), mk_float4(' + arg3 + ')));\n')
elif outputType == 'color':
file.write(INDENT + 'return color(' + functionName + '(float3(' + arg1 + '), float3(' + arg2 + '), float3(' + arg3 + ')));\n')
else:
file.write(INDENT + 'return ' + functionName + '(' + outputType + '(' + arg1 + '),' + outputType + '(' + arg2 + '),' + outputType+ '(' + arg3 + '));\n')
def _writeTransformMatrix(file, nodeName):
if nodeName.find('vector3M4') >= 0:
file.write(INDENT + 'float4 returnValue = mxp_mat * float4(mxp_in.x, mxp_in.y, mxp_in.z, 1.0);\n')
file.write(INDENT + 'return float3(returnValue.x, returnValue.y, returnValue.z);\n')
elif nodeName.find('vector2M3') >= 0:
file.write(INDENT + 'float3 returnValue = mxp_mat * float3(mxp_in.x, mxp_in.y, 1.0);\n')
file.write(INDENT + 'return float2(returnValue.x, returnValue.y);\n')
else:
file.write(INDENT + 'return mxp_mat * mxp_in;\n')
def _writeTwoArgumentCombine(file, outputType):
if outputType == 'color':
outputType = 'color3';
file.write(INDENT + 'return mk_' + outputType + '(mxp_in1, mxp_in2);\n')
def _writeThreeArgumentCombine(file, outputType):
if outputType == 'color':
file.write(INDENT + 'return ' + outputType + '(mxp_in1, mxp_in2, mxp_in3);\n')
else:
file.write(INDENT + 'return mk_' + outputType + '(mxp_in1, mxp_in2, mxp_in3);\n')
def _writeFourArgumentCombine(file, outputType):
if outputType == 'color':
outputType = 'color3';
file.write(INDENT + 'return mk_' + outputType + '(mxp_in1, mxp_in2, mxp_in3, mxp_in4);\n')
def _writeIfGreater(file, comparitor):
file.write(INDENT + 'if (mxp_value1 ' + comparitor + ' mxp_value2) { return mxp_in1; } return mxp_in2;\n' )
def _writeTranformSpace(file, outputType, functionName, input, fromspace, tospace):
file.write(INDENT + 'state::coordinate_space fromSpace = ::mx_map_space(' + fromspace + ');\n')
file.write(INDENT + 'state::coordinate_space toSpace = ::mx_map_space(' + tospace + ');\n')
file.write(INDENT + 'return mk_' + outputType + '( state::' + functionName + '(fromSpace, toSpace, ' + input + '));\n')
def writeNormalMap(file):
file.write(INDENT + 'if (mxp_space == "tangent")\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' float3 v = mxp_in * 2.0 - 1.0;\n')
file.write(INDENT + ' float3 B = ::math::normalize(::math::cross(mxp_normal, mxp_tangent));\n')
file.write(INDENT + ' return ::math::normalize(mxp_tangent * v.x * mxp_scale + B * v.y * mxp_scale + mxp_normal * v.z);\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'else\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' float3 n = mxp_in * 2.0 - 1.0;\n')
file.write(INDENT + ' return ::math::normalize(n);\n')
file.write(INDENT + '}\n')
def _writeRemap(file, outputType):
if outputType == 'color4':
file.write(INDENT + 'color4 val = mk_color4(mxp_outlow);\n')
file.write(INDENT + 'color4 val2 = mx_add(val, mx_subtract(mk_color4(mxp_in), mk_color4(mxp_inlow)));\n')
file.write(INDENT + 'color4 val3 = mx_multiply(val2, mx_subtract(mk_color4(mxp_outhigh), mk_color4(mxp_outlow)));\n')
file.write(INDENT + 'return mx_divide(val3, mx_subtract(mk_color4(mxp_inhigh), mk_color4(mxp_inlow)));\n')
else:
file.write(INDENT + 'return mxp_outlow + (mxp_in - mxp_inlow) * (mxp_outhigh - mxp_outlow) / (mxp_inhigh - mxp_inlow);\n')
def _writeSwitch(file, outputType):
file.write(INDENT + outputType + ' returnValue;\n')
file.write(INDENT + 'switch (int(mxp_which)) {\n')
file.write(INDENT*2 + 'case 0: returnValue=mxp_in1; break;\n')
file.write(INDENT*2 + 'case 1: returnValue=mxp_in2; break;\n')
file.write(INDENT*2 + 'case 2: returnValue=mxp_in3; break;\n')
file.write(INDENT*2 + 'case 3: returnValue=mxp_in4; break;\n')
file.write(INDENT*2 + 'case 4: returnValue=mxp_in5; break;\n')
file.write(INDENT*2 + 'default: returnValue=mxp_in1; break;\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'return returnValue;\n')
def _writeOverlay(file, outputType):
if outputType == 'color4':
file.write(INDENT + 'color4 upper, lower;\n')
file.write(INDENT + 'color4 fg_ = color4(mxp_fg);\n')
file.write(INDENT + 'color4 bg_ = color4(mxp_bg);\n')
file.write(INDENT + 'upper = mx_multiply(mx_multiply(mk_color4(2.0),bg_),fg_);\n')
file.write(INDENT + 'lower = mx_subtract(mx_add(bg_,fg_),mx_multiply(bg_,fg_));\n')
file.write(INDENT + 'color maskRGB = color(::math::step(float3(.5), float3(fg_.rgb)));\n')
file.write(INDENT + 'float maskA = ::math::step(.5, fg_.a);\n')
file.write(INDENT + 'color overlayvalRGB = ::math::lerp(lower.rgb, upper.rgb, maskRGB);\n')
file.write(INDENT + 'float overlayvalA = ::math::lerp(lower.a, upper.a, maskA);\n')
file.write(INDENT + 'color returnRGB = ::math::lerp(mxp_bg.rgb, overlayvalRGB, color(mxp_mix));\n')
file.write(INDENT + 'float returnA = ::math::lerp(mxp_bg.a, overlayvalA, mxp_mix);\n')
file.write(INDENT + 'return color4(returnRGB, returnA);\n')
else:
file.write(INDENT + outputType + ' upper, lower, mask, overlayval;\n')
file.write(INDENT + outputType + ' fg_ = ' + outputType + '(mxp_fg);\n')
file.write(INDENT + outputType + ' bg_ = ' + outputType + '(mxp_bg);\n')
file.write(INDENT + 'upper = 2.0*bg_*fg_;\n')
file.write(INDENT + 'lower = bg_+fg_-bg_*fg_;\n')
if outputType == 'color':
file.write(INDENT + 'mask = color(::math::step(float3(.5), float3(fg_)));\n')
else:
file.write(INDENT + 'mask = ::math::step(' + outputType + '(.5), fg_);\n')
file.write(INDENT + 'overlayval = ::math::lerp(lower, upper, mask);\n')
file.write(INDENT + 'return ' + outputType + '(::math::lerp(mxp_bg, overlayval, mxp_mix));\n')
def _writeDisjointOver(file, outputType):
if outputType == 'float2':
file.write(INDENT + 'float2 result;\n')
file.write(INDENT + 'float summedAlpha = mxp_fg.y + mxp_bg.y;\n')
file.write(INDENT + 'if (summedAlpha <= 1)\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' result.x = mxp_fg.x + mxp_bg.x;\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'else\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' if (::math::abs(mxp_bg.y) < FLOAT_EPS)\n')
file.write(INDENT + ' {\n')
file.write(INDENT + ' result.x = 0.0;\n')
file.write(INDENT + ' }\n')
file.write(INDENT + ' else\n')
file.write(INDENT + ' {\n')
file.write(INDENT + ' result.x = mxp_fg.x + ((mxp_bg.x * (1-mxp_fg.y)) / mxp_bg.y);\n')
file.write(INDENT + ' }\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'result.y = ::math::min(summedAlpha, 1.0);\n')
file.write(INDENT + 'result.x = result.x * mxp_mix + (1.0 - mxp_mix) * mxp_bg.x;\n')
file.write(INDENT + 'result.y = result.y * mxp_mix + (1.0 - mxp_mix) * mxp_bg.y;\n')
file.write(INDENT + 'return result;\n')
else:
file.write(INDENT + 'color4 result;\n')
file.write(INDENT + 'float summedAlpha = mxp_fg.a + mxp_bg.a;\n')
file.write(INDENT + 'if (summedAlpha <= 1)\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' result.rgb = mxp_fg.rgb + mxp_bg.rgb;\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'else\n')
file.write(INDENT + '{\n')
file.write(INDENT + ' if (::math::abs(mxp_bg.a) < FLOAT_EPS)\n')
file.write(INDENT + ' {\n')
file.write(INDENT + ' result.rgb = color(0.0,0.0,0.0);\n')
file.write(INDENT + ' }\n')
file.write(INDENT + ' else\n')
file.write(INDENT + ' {\n')
file.write(INDENT + ' result.rgb = mxp_fg.rgb + ((mxp_bg.rgb * (1-mxp_fg.a)) / mxp_bg.a);\n')
file.write(INDENT + ' }\n')
file.write(INDENT + '}\n')
file.write(INDENT + 'result.a = ::math::min(summedAlpha, 1.0);\n')
file.write(INDENT + 'result.rgb = result.rgb * mxp_mix + (1.0 - mxp_mix) * mxp_bg.rgb;\n')
file.write(INDENT + 'result.a = result.a * mxp_mix + (1.0 - mxp_mix) * mxp_bg.a;\n')
file.write(INDENT + 'return result;\n')
def main():
if len(sys.argv) < 2:
usage()
sys.exit(0)
_startPath = os.path.abspath(sys.argv[1])
if os.path.exists(_startPath) == False:
print('Start path does not exist: ' + _startPath + '. Using current directory.\n')
_startPath = os.path.abspath(os.getcwd())
moduleName = 'mymodule'
if len(sys.argv) > 2:
moduleName = sys.argv[2]
version = '1.6'
if len(sys.argv) > 3:
version = sys.argv[3]
LIBRARY = 'stdlib'
doc = mx.createDocument()
searchPath = os.path.join(_startPath, 'libraries')
libraryPath = os.path.join(searchPath, LIBRARY)
_loadLibraries(doc, searchPath, libraryPath)
DEFINITION_PREFIX = 'ND_'
IMPLEMENTATION_PREFIX = 'IM_'
IMPLEMENTATION_STRING = 'impl'
GENMDL = 'genmdl'
DESINATION_FOLDER = 'genmdl/materialx'
# Create target directory if don't exist
impl_outputPath = os.path.join(libraryPath, GENMDL)
if not os.path.exists(impl_outputPath):
os.mkdir(impl_outputPath)
outputPath = os.path.join(libraryPath, DESINATION_FOLDER)
if not os.path.exists(outputPath):
os.mkdir(outputPath)
file = None
# Write to single file if module name specified
if len(moduleName):
file = open(outputPath + '/' + moduleName + '_ref.mdl', 'w+')
_writeHeader(file, version)
# Dictionary to map from MaterialX type declarations
# to MDL type declarations
typeMap = dict()
typeMap['boolean'] = 'bool'
typeMap['integer'] = 'int'
typeMap['color2'] = 'float2'
typeMap['color3'] = 'color'
typeMap['color4'] = 'color4'
typeMap['vector2'] = 'float2'
typeMap['vector3'] = 'float3'
typeMap['vector4'] = 'float4'
typeMap['matrix33'] = 'float3x3'
typeMap['matrix44'] = 'float4x4'
typeMap['filename'] = 'texture_2d' # Assume all file textures are 2d for now
typeMap['geomname'] = 'string'
typeMap['floatarray'] = 'float[<N>]'
typeMap['integerarray'] = 'int[<N>]'
typeMap['color2array'] = 'float2[<N>]'
typeMap['color3array'] = 'color[<N>]'
typeMap['color4array'] = 'float4[<N>]'
typeMap['vector2array'] = 'float2[<N>]'
typeMap['vector3array'] = 'float3[<N>]'
typeMap['vector4array'] = 'float4[<N>]'
typeMap['stringarray'] = 'string[<N>]'
typeMap['geomnamearray'] = 'string[<N>]'
typeMap['surfaceshader'] = 'material'
typeMap['volumeshader'] = 'material'
typeMap['displacementshader'] = 'material'
typeMap['lightshader'] = 'material'
functionTypeMap = dict()
functionTypeMap['mx_separate2_color2'] = 'mx_separate2_color2_type'
functionTypeMap['mx_separate3_color3'] = 'mx_separate3_color3_type'
functionTypeMap['mx_separate4_color4'] = 'mx_separate4_color4_type'
functionTypeMap['mx_separate2_vector2'] = 'mx_separate2_vector2_type'
functionTypeMap['mx_separate3_vector3'] = 'mx_separate3_vector3_type'
functionTypeMap['mx_separate4_vector4'] = 'mx_separate4_vector4_type'
# Create an implementation per nodedef
#
implDoc = mx.createDocument()
nodedefs = doc.getNodeDefs()
nodeGraphs = doc.getNodeGraphs()
implementedCont = 0;
totalCount = 0;
for nodedef in nodedefs:
# Skip any node definitions which are implemented as node graphs
nodeDefName = nodedef.getName()
#print(nodeDef)
implementationIsGraph = False
for nodeGraph in nodeGraphs:
graphName = nodeGraph.getName()
#print('Scane nodegraph: ' + nodeGraph.getName() + '\n')
if nodeGraph.getAttribute('nodedef') == nodeDefName:
file.write('// Nodedef: ' + nodeDefName + ' is represented by a nodegraph: ' + graphName + '\n')
implementationIsGraph = True
break
if implementationIsGraph:
continue
# These definitions are for organization only
nodeGroup = nodedef.getAttribute('nodegroup')
if nodeGroup == 'organization':
continue
# TODO: Skip array definitions for now
nodeCategory = nodedef.getAttribute('node')
if nodeCategory == 'geomcolor':
print('Skip ' + nodeDefName + ' implementation. Not supported in MDL')
#continue
elif nodeCategory == 'geomattrvalue':
print('Skip ' + nodeDefName + ' implementation. Not supported in MDL')
#continue
elif nodeCategory == 'geompropvalue':
print('Skip ' + nodeDefName + ' implementation. Not supported in MDL')
#continue
if len(nodedef.getActiveOutputs()) == 0:
continue
totalCount += 1
outputValue = ''
outputType = ''
# String out definition prefix
nodeName = nodedef.getName()
if len(nodeName) > 3:
if (nodeName[0:3] == DEFINITION_PREFIX):
nodeName = nodeName[3:]
filename = nodeName + '.ref_mdl'
implname = IMPLEMENTATION_PREFIX + nodeName + '_' + GENMDL
impl = implDoc.addImplementation(implname)
impl.setNodeDef(nodedef)
if len(moduleName):
impl.setFile('stdlib/' + DESINATION_FOLDER + '/' + moduleName + '.ref_mdl')
else:
impl.setFile('stdlib/' + DESINATION_FOLDER + '/' + filename)
functionName = FUNCTION_PREFIX + nodeName
functionCallName = functionName
if len(moduleName):
functionCallName = functionName
impl.setFunction(functionCallName)
impl.setLanguage(GENMDL)
# If no module name, create a new mdl file per nodedef
if len(moduleName) == 0:
file = open(outputPath + '/materialx/' + filename, 'w+')
_writeHeader(file, version)
outType = nodedef.getType()
routeInputToOutput = False
# TODO: Skip multioutput nodes for now
#if outType == 'multioutput':
# continue
# Create a signature for the nodedef
file.write('export ')
# Add output argument
if functionName in functionTypeMap:
outType = functionTypeMap[functionName]
else:
outType = _mapType(outType, typeMap, functionName)
file.write(outType + SPACE)
file.write(functionName + '(\n')
# Add input arguments
#
elems = nodedef.getActiveValueElements()
lastComma = len(elems) - len(nodedef.getActiveOutputs())
i = 0
channelString = ''
for elem in elems:
dataType = ''
defaultgeomprop = ''
# Skip output elements
if isinstance(elem, mx.Output):
outputValue = elem.getAttribute('default')
if outputValue == '[]':
outputValue = ''
if not outputValue:
outputValue = elem.getAttribute('defaultinput')
if outputValue:
outputValue = FUNCTION_PARAMETER_PREFIX + outputValue
routeInputToOutput = True
outputType = elem.getType()
outputType = _mapType(outputType, typeMap, functionName)
continue
# Parameters map to uniforms
elif isinstance(elem, mx.Parameter):
dataType = 'uniform '
# Inputs map to varyings
elif isinstance(elem, mx.Input):
dataType = ''
defaultgeomprop = elem.getAttribute('defaultgeomprop')
# Determine type
typeString = elem.getType()
isFileTexture = (typeString == 'filename')
typeString = _mapType(typeString , typeMap, functionName)
isString = (typeString == 'string')
# Determine value
isGeometryInput = len(defaultgeomprop) > 0
if isGeometryInput:
valueString = _mapGeomProp(defaultgeomprop)
else:
valueString = elem.getValueString()
parameterName = FUNCTION_PARAMETER_PREFIX + elem.getName();
isEnumeration = len(elem.getAttribute('enum')) > 0
# Remap enumerations.
# Note: This is hard-coded since there are no type enumerations in MaterialX to map from
if isEnumeration and not isGeometryInput:
ADDRESS_MODE = { 'constant', 'clamp', 'periodic', 'mirror'}
FILTER_LOOKUP = { 'closest', 'linear', 'cubic' }
COORDINATE_SPACES = { 'model', 'object' , 'world' }
FILTER_TYPE = { 'box', 'gaussian' }
if valueString in ADDRESS_MODE:
typeString = 'mx_addressmode_type'
valueString = typeString + '_' + valueString
elif valueString in FILTER_LOOKUP:
typeString = 'mx_filterlookup_type'
valueString = typeString + '_' + valueString
elif valueString in COORDINATE_SPACES:
typeString = 'mx_coordinatespace_type'
valueString = typeString + '_' + valueString
elif valueString in FILTER_TYPE:
typeString = 'mx_filter_type'
valueString = typeString + '_' + valueString
if typeString == 'mx_coordinatespace_type' and valueString == '':
valueString = 'mx_coordinatespace_type_model'
file.write(INDENT + dataType + typeString + SPACE + parameterName)
_writeValueAssignment(file, valueString, typeString, isFileTexture or isString)
if nodeCategory == 'swizzle' and parameterName == 'mxp_channels':
channelString = valueString
# Add annotations if any
description = elem.getAttribute('doc')
if len(elem.getAttribute('enum')):
description = description + 'Enumeration {' + elem.getAttribute('enum') + '}.'
if len(elem.getAttribute('unittype')):
description = description + 'Unit Type:' + elem.getAttribute('unittype') + '.'
if len(elem.getAttribute('unit')):
description = description + ' Unit:' + elem.getAttribute('unit') + "."
uiname = elem.getAttribute('uiname')
uigroup = elem.getAttribute('uifolder')
if len(description) or len(uiname) or len(uigroup):
file.write(INDENT + '\n' + INDENT + '[[')
count = 0
if len(description):
file.write("\n" + INDENT + INDENT + 'anno::description("' + description + '")')
count = count + 1
if len(uiname):
if count > 0:
file.write(',')
file.write("\n" + INDENT + INDENT + 'anno::display_name("' + uiname + '")')
count = count + 1
if len(uigroup):
if count > 0:
file.write(',')
file.write("\n" + INDENT + INDENT + 'anno::in_group("' + uigroup + '")')
file.write('\n' + INDENT + ']]')
i = i + 1
if i < lastComma:
file.write(',')
file.write('\n')
file.write(')\n')
nodegroup = nodedef.getAttribute('nodegroup')
if len(nodegroup):
file.write(INDENT + '[[\n')
file.write(INDENT + INDENT + 'anno::description("Node Group: ' + nodegroup + '")\n')
file.write(INDENT + ']]\n')
if outputType == 'material':
if outputValue:
file.write('= ' + outputValue + '; // TODO \n\n')
else:
file.write('= material(); // TODO \n\n')
else:
file.write('{\n')
if functionName in functionTypeMap:
file.write(INDENT + '// No-op. Return default value for now\n')
file.write(INDENT + 'return ' + functionTypeMap[functionName] + '();\n')
else:
wroteImplementation = False
if nodeCategory == 'constant':
file.write(INDENT + 'return mxp_value;\n')
wroteImplementation = True
elif nodeCategory == 'absval':
_writeOneArgumentFunc(file, outputType, '::math::abs')
wroteImplementation = True
elif nodeCategory == 'ceil':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'round':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'floor':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'sin':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'asin':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'cos':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'acos':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'tan':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'atan2':
_writeTwoArgumentFunc(file, outputType, '::math::'+nodeCategory, arg1=mxp_iny, arg2=mxp_inx)
wroteImplementation = True
elif nodeCategory == 'sqrt':
_writeOneArgumentFunc(file, outputType, '::math::'+nodeCategory)
wroteImplementation = True
elif nodeCategory == 'ln':
_writeOneArgumentFunc(file, outputType, '::math::log')
wroteImplementation = True
elif nodeCategory == 'exp':
_writeOneArgumentFunc(file, outputType, '::math::exp')
wroteImplementation = True
elif nodeCategory == 'sign':
_writeOneArgumentFunc(file, outputType, '::math::sign')
wroteImplementation = True
elif nodeCategory == 'max':
_writeTwoArgumentFunc(file, outputType, '::math::max')
wroteImplementation = True
elif nodeCategory == 'min':
_writeTwoArgumentFunc(file, outputType, '::math::min')
wroteImplementation = True
elif nodeCategory == 'add':
_writeOperatorFunc(file, outputType, 'mxp_in1', '+', 'mxp_in2')
wroteImplementation = True
elif nodeCategory == 'subtract':
_writeOperatorFunc(file, outputType, 'mxp_in1', '-', 'mxp_in2')
wroteImplementation = True
elif nodeCategory == 'invert':
_writeOperatorFunc(file, outputType, 'mxp_amount', '-', 'mxp_in')
wroteImplementation = True
elif nodeCategory == 'multiply':
_writeOperatorFunc(file, outputType, 'mxp_in1', '*', 'mxp_in2')
wroteImplementation = True
elif nodeCategory == 'divide':
if outputType == 'color4':
file.write(INDENT + 'return mk_color4(mk_float4(mxp_in1) / mk_float4(mxp_in2));')
wroteImplementation = True
elif outputType == 'float3x3' or outputType == 'float4x4':
file.write(INDENT + 'return vectormatrix::mx_divide(mxp_in1, mxp_in2);\n')
wroteImplementation = True
else:
file.write(INDENT + 'return mxp_in1 / mxp_in2;\n')
wroteImplementation = True
elif nodeCategory == 'modulo':
_writeTwoArgumentFunc(file, outputType, 'mx_mod')
wroteImplementation = True
elif nodeCategory == 'power':
_writeTwoArgumentFunc(file, outputType, '::math::pow')
wroteImplementation = True
elif nodeCategory == 'clamp':
_writeThreeArgumentFunc(file, outputType, '::math::clamp', 'mxp_in', 'mxp_low', 'mxp_high')
wroteImplementation = True
elif nodeCategory == 'normalize':
_writeOneArgumentFunc(file, outputType, '::math::normalize')
wroteImplementation = True
elif nodeCategory == 'magnitude':
_writeOneArgumentFunc(file, outputType, '::math::length')
wroteImplementation = True
elif nodeCategory == 'dotproduct':
_writeTwoArgumentFunc(file, outputType, '::math::dot')
wroteImplementation = True
elif nodeCategory == 'crossproduct':
_writeTwoArgumentFunc(file, outputType, '::math::cross')
wroteImplementation = True
elif nodeCategory == 'image':
_writeImageImplementation(file, outputType)
wroteImplementation = True
elif nodeCategory == 'transformmatrix':
_writeTransformMatrix(file, nodeName)
wroteImplementation = True
elif nodeCategory == 'determinant':
_writeOneArgumentFunc(file, outputType, 'vectormatrix::mx_determinant')
wroteImplementation = True
elif nodeCategory == 'smoothstep':
_writeThreeArgumentFunc(file, outputType, '::math::smoothstep', 'mxp_in', 'mxp_low', 'mxp_high')
wroteImplementation = True
elif nodeCategory == 'luminance':
if nodeName.find('color4') > 0:
file.write(INDENT + 'color rgb = color(mxp_in.rgb);\n')
file.write(INDENT + 'color4 returnValue = mk_color4(::math::luminance(rgb));\n')
file.write(INDENT + 'returnValue.a = mxp_in.a;\n')
file.write(INDENT + 'return returnValue;\n')
else:
_writeOneArgumentFunc(file, outputType, '::math::luminance')
wroteImplementation = True
elif nodeCategory == 'plus':
if outputType != 'color4':
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_fg', '(mxp_bg+mxp_fg)', 'mxp_mix')
else:
file.write(INDENT + 'color rgb = ::math::lerp(mxp_fg.rgb, mxp_bg.rgb+mxp_fg.rgb, color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_fg.a, mxp_bg.a+mxp_fg.a, mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'minus':
if outputType != 'color4':
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', '(mxp_bg-mxp_fg)', 'mxp_mix')
else:
file.write(INDENT + 'color rgb = ::math::lerp(mxp_bg.rgb, mxp_bg.rgb-mxp_fg.rgb, color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_bg.a, mxp_bg.a-mxp_fg.a, mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'difference':
if outputType != 'color4':
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', 'math::abs(mxp_bg-mxp_fg)', 'mxp_mix')
else:
file.write(INDENT + 'color rgb = ::math::lerp(mxp_bg.rgb, math::abs(mxp_bg.rgb-mxp_fg.rgb), color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_bg.a, math::abs(mxp_bg.a-mxp_fg.a), mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'burn':
if outputType != 'color4':
burnString = outputType + '(1.0)-(' + outputType + '(1.0)-mxp_bg)/mxp_fg'
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', burnString, 'mxp_mix')
else:
dodgeStringRGB = 'color(1.0)-(color(1.0)-mxp_bg.rgb)/mxp_fg.rgb'
dodgeStringA = '1.0-(1.0-mxp_bg.a)/mxp_fg.a'
file.write(INDENT + 'color rgb = ::math::lerp(mxp_bg.rgb,'+ dodgeStringRGB + ', color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_bg.a, '+ dodgeStringA + ', mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'dodge':
if outputType != 'color4':
dodgeString = 'mxp_bg/(' + outputType + '(1.0)-mxp_fg)'
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', dodgeString, 'mxp_mix')
else:
dodgeStringRGB = 'mxp_bg.rgb/(color(1.0)-mxp_fg.rgb)'
dodgeStringA = 'mxp_bg.a/(1.0-mxp_fg.a)'
file.write(INDENT + 'color rgb = ::math::lerp(mxp_bg.rgb,'+ dodgeStringRGB + ', color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_bg.a, '+ dodgeStringA + ', mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'screen':
if outputType != 'color4':
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', 'mxp_bg+mxp_fg-mxp_bg*mxp_fg', 'mxp_mix')
else:
file.write(INDENT + 'color rgb = ::math::lerp(mxp_bg.rgb, mxp_bg.rgb+mxp_fg.rgb-mxp_bg.rgb*mxp_fg.rgb, color(mxp_mix));\n')
file.write(INDENT + 'float a = ::math::lerp(mxp_bg.a, mxp_bg.a+mxp_fg.a-mxp_bg.a*mxp_fg.a, mxp_mix);\n')
file.write(INDENT + 'return color4(rgb,a);\n')
wroteImplementation = True
elif nodeCategory == 'inside':
_writeOperatorFunc(file, outputType, 'mxp_in', '*', 'mxp_mask')
wroteImplementation = True
elif nodeCategory == 'outside':
_writeOperatorFunc(file, outputType, 'mxp_in', '*', '(1.0 - mxp_mask)')
wroteImplementation = True
elif nodeCategory == 'in':
if outputType == 'float2':
_writeOperatorFunc(file, outputType, 'mxp_fg', '*', 'mxp_bg*(1.0-mxp_fg.y)')
else:
_writeOperatorFunc(file, outputType, 'mxp_fg', '*', 'mx_multiply_color4FA(mxp_bg, 1.0-mxp_fg.a)')
wroteImplementation = True
elif nodeCategory == 'mix':
_writeThreeArgumentFunc(file, outputType, '::math::lerp', 'mxp_bg', 'mxp_fg', 'mxp_mix')
wroteImplementation = True
elif nodeCategory == 'combine2':
_writeTwoArgumentCombine(file, outputType)
wroteImplementation = True
elif nodeCategory == 'combine3':
_writeThreeArgumentCombine(file, outputType)
wroteImplementation = True
elif nodeCategory == 'combine4':
_writeFourArgumentCombine(file, outputType)
wroteImplementation = True
elif nodeCategory == 'ifgreater':
_writeIfGreater(file, '>')
wroteImplementation = True
elif nodeCategory == 'ifgreatereq':
_writeIfGreater(file, '>=')
wroteImplementation = True
elif nodeCategory == 'ifequal':
_writeIfGreater(file, '==')
wroteImplementation = True
elif nodeCategory == 'convert':
if outputType == 'float':
file.write(INDENT + 'return ' + outputType + '(mxp_in);\n')
elif outputType == 'color':
file.write(INDENT + 'return mk_color3(mxp_in);\n')
else:
file.write(INDENT + 'return mk_' + outputType + '(mxp_in);\n')
wroteImplementation = True
elif nodeCategory == 'ramplr':
if outputType == 'color4':
file.write(INDENT + 'color rgb = math::lerp(mxp_valuel.rgb, mxp_valuer.rgb, math::clamp(mxp_texcoord.x, 0.0, 1.0));\n')
file.write(INDENT + 'float a = math::lerp(mxp_valuel.a, mxp_valuer.a, math::clamp(mxp_texcoord.x, 0.0, 1.0));\n')
file.write(INDENT + 'return color4(rgb, a);')
else:
file.write(INDENT + 'return math::lerp(mxp_valuel, mxp_valuer, math::clamp(mxp_texcoord.x, 0.0, 1.0));\n')
wroteImplementation = True
elif nodeCategory == 'ramptb':
if outputType == 'color4':
file.write(INDENT + 'color rgb = math::lerp(mxp_valuet.rgb, mxp_valueb.rgb, math::clamp(mxp_texcoord.y, 0.0, 1.0));\n')
file.write(INDENT + 'float a = math::lerp(mxp_valuet.a, mxp_valueb.a, math::clamp(mxp_texcoord.y, 0.0, 1.0));\n')
file.write(INDENT + 'return color4(rgb, a);')
else:
file.write(INDENT + 'return math::lerp(mxp_valuet, mxp_valueb, math::clamp(mxp_texcoord.y, 0.0, 1.0));\n')
wroteImplementation = True
elif nodeCategory == 'splitlr':
if outputType == 'color4':
file.write(INDENT + 'color rgb = math::lerp(mxp_valuel.rgb, mxp_valuer.rgb, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
file.write(INDENT + 'float a = math::lerp(mxp_valuel.a, mxp_valuer.a, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
file.write(INDENT + 'return color4(rgb, a);')
else:
file.write(INDENT + 'return math::lerp(mxp_valuel, mxp_valuer, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
wroteImplementation = True
elif nodeCategory == 'splittb':
if outputType == 'color4':
file.write(INDENT + 'color rgb = math::lerp(mxp_valuet.rgb, mxp_valueb.rgb, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
file.write(INDENT + 'float a = math::lerp(mxp_valuet.a, mxp_valueb.a, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
file.write(INDENT + 'return color4(rgb, a);')
else:
file.write(INDENT + 'return math::lerp(mxp_valuet, mxp_valueb, math::step(mxp_center, math::clamp(mxp_texcoord.x,0,1)));')
wroteImplementation = True
elif nodeCategory == 'transformvector':
_writeTranformSpace(file, outputType, 'transform_vector', 'mxp_in', 'mxp_fromspace', 'mxp_tospace')
wroteImplementation = True
elif nodeCategory == 'transformpoint':
_writeTranformSpace(file, outputType, 'transform_point', 'mxp_in', 'mxp_fromspace', 'mxp_tospace')
wroteImplementation = True
elif nodeCategory == 'transformnormal':
_writeTranformSpace(file, outputType, 'transform_normal', 'mxp_in', 'mxp_fromspace', 'mxp_tospace')
wroteImplementation = True
elif nodeCategory == 'position':
_writeTranformSpace(file, outputType, 'transform_point', 'state::position()', 'mx_coordinatespace_type_model', 'mxp_space')
wroteImplementation = True
elif nodeCategory == 'normal':
_writeTranformSpace(file, outputType, 'transform_normal', 'state::normal()', 'mx_coordinatespace_type_model', 'mxp_space')
wroteImplementation = True
elif nodeCategory == 'tangent':
_writeTranformSpace(file, outputType, 'transform_vector', 'state::texture_tangent_u(mxp_index)', 'mx_coordinatespace_type_model', 'mxp_space')
wroteImplementation = True
elif nodeCategory == 'bitangent':
_writeTranformSpace(file, outputType, 'transform_vector', 'state::texture_tangent_v(mxp_index)', 'mx_coordinatespace_type_model', 'mxp_space')
wroteImplementation = True
elif nodeCategory == 'texcoord':
file.write(INDENT + 'return mk_' + outputType + '(state::texture_coordinate(mxp_index));\n')
wroteImplementation = True
elif nodeCategory == 'transpose':
file.write(INDENT + 'return ::math::transpose(mxp_in);\n')
wroteImplementation = True
elif nodeCategory == 'determinant':
file.write(INDENT + 'return vectormatrix::mx_determinant(mxp_in);\n')
wroteImplementation = True
elif nodeCategory == 'rotate2d':
file.write(INDENT + 'return vectormatrix::mx_rotate(mxp_in, mxp_amount);\n')
wroteImplementation = True
elif nodeCategory == 'rotate3d':
file.write(INDENT + 'return vectormatrix::mx_rotate(mxp_in, mxp_amount, mxp_axis);\n')
wroteImplementation = True
elif nodeCategory == 'remap':
_writeRemap(file, outputType)
wroteImplementation = True
elif nodeCategory == 'time':
file.write(INDENT + 'return ::state::animation_time();\n')
wroteImplementation = True
elif nodeCategory == 'hsvtorgb':
file.write(INDENT + 'return ::hsv::mx_hsvtorgb(mxp_in);\n')
wroteImplementation = True
elif nodeCategory == 'rgbtohsv':
file.write(INDENT + 'return ::hsv::mx_rgbtohsv(mxp_in);\n')
wroteImplementation = True
elif nodeCategory == 'switch':
_writeSwitch(file, outputType)
wroteImplementation = True
elif nodeCategory == 'overlay':
_writeOverlay(file, outputType)
wroteImplementation = True
elif nodeCategory == 'normalmap':
writeNormalMap(file)
wroteImplementation = True
elif nodeCategory == 'premult':
if outputType == 'float2':
file.write(INDENT + 'return float2(mxp_in.x * mxp_in.y, mxp_in.y);\n')
elif outputType == 'color4':
file.write(INDENT + 'return mk_color4(mxp_in.rgb * mxp_in.a, mxp_in.a);\n')
wroteImplementation = True
elif nodeCategory == 'unpremult':
if outputType == 'float2':
file.write(INDENT + 'return float2(mxp_in.x / mxp_in.y, mxp_in.y);\n')
elif outputType == 'color4':
file.write(INDENT + 'return mk_color4(mxp_in.rgb / mxp_in.a, mxp_in.a);\n')
wroteImplementation = True
elif nodeCategory == 'disjointover':
_writeDisjointOver(file, outputType)
wroteImplementation = True
elif nodeCategory == 'mask':
if outputType == 'float2':
file.write(INDENT + 'return (mxp_bg * mxp_fg.y * mxp_mix) + mxp_bg*(1.0-mxp_mix);\n')
elif outputType == 'color4':
file.write(INDENT + 'return mx_add(' +
'mx_multiply_color4FA(mxp_bg,mxp_fg.a*mxp_mix),' +
'mx_multiply_color4FA(mxp_bg, (1.0-mxp_mix)) );\n')
wroteImplementation = True
elif nodeCategory == 'matte':
if outputType == 'float2':
file.write(INDENT + 'return ' +
'float2( mxp_fg.x*mxp_fg.y + mxp_bg.x*(1.0-mxp_fg.y), mxp_fg.y + (mxp_bg.y*(1.0-mxp_fg.y)) ) ' +
'* mxp_mix + (mxp_bg * (1.0-mxp_mix));\n')
elif outputType == 'color4':
file.write(INDENT + 'color4 ls = mk_color4(\n')
file.write(INDENT + ' mx_multiply_color3FA(mxp_fg.rgb,mxp_fg.a) +\n')
file.write(INDENT + ' mx_multiply_color3FA(mxp_bg.rgb,(1.0-mxp_fg.a)),\n')
file.write(INDENT + ' mxp_fg.a + (mxp_bg.a*(1.0-mxp_fg.a)) );\n')
file.write(INDENT + 'ls = mx_multiply(ls,mk_color4(mxp_mix));\n')
file.write(INDENT + 'color4 rs = mx_multiply_color4FA(mxp_bg,(1.0-mxp_mix));\n')
file.write(INDENT + 'color4 result = mx_add(ls, rs);\n')
file.write(INDENT + 'return result;\n')
wroteImplementation = True
elif nodeCategory == 'out':
if outputType == 'float2':
file.write(INDENT + 'return (mxp_fg*(1.0-mxp_bg.y) * mxp_mix) + (mxp_bg * (1.0-mxp_mix));\n')
elif outputType == 'color4':
file.write(INDENT + 'float4 result =\n')
file.write(INDENT + ' (mk_float4(mxp_fg)*(1.0-mk_float4(mxp_bg).z) * mxp_mix) +\n')
file.write(INDENT + ' (mk_float4(mxp_bg) * (1.0-mxp_mix));\n')
file.write(INDENT + 'return mk_color4(result);\n')
wroteImplementation = True
elif nodeCategory == 'over':
if outputType == 'float2':
file.write(INDENT + 'return mxp_fg + (mxp_bg*(1.0-mxp_fg.y));\n')
elif outputType == 'color4':
file.write(INDENT + 'float4 val = mk_float4(mxp_fg) + (mk_float4(mxp_bg)*(1.0-mk_float4(mxp_fg).y));\n')
file.write(INDENT + 'return mk_color4(val);\n')
wroteImplementation = True
if wroteImplementation:
implementedCont += 1
else:
file.write(INDENT + '// Not implemented: ' + functionName + '\n')
file.write(INDENT + outputType + ' defaultValue')
if routeInputToOutput:
outputType = ''
_writeValueAssignment(file, outputValue, outputType, outputType == 'texture_2d')
file.write(';\n')
file.write(INDENT + 'return defaultValue;\n')
file.write('}\n\n')
if len(moduleName) == 0:
file.close()