def addShaderAttributes(self, shaderFunc):
"""
adds a per vertex shader attribute.
"""
FaceVArray.addShaderAttributes(self, shaderFunc)
if self.hasTangents():
shaderFunc.addAttribute(type="vec4", name="vertexTangent")
def __init__(self, name, params):
self.tangents = params.get('vertexTangent')
conf = params.get('tangentsConf')
if conf!=None and conf.dynamic:
self.dynamicTangents = True
else:
self.dynamicTangents = False
FaceVArray.__init__(self, name, params)
def duplicatePerVertexAttribute(self, index):
FaceVArray.duplicatePerVertexAttribute(self, index)
if self.hasTangents():
# FIXME: TSPACE: for different per face uv tangents cant be duplicated like this,
# because their calculation depends on the uv values
self.tangents.data.append(self.tangents.data[index])
def postCreate(self):
FaceVArray.postCreate(self)
del self.tangents
def createVBOs(self):
"""
add tangent attribute before creating the vbos.
"""
self.addAttribute(self.tangents)
FaceVArray.createVBOs(self)
def isDynamicAttribute(self, attribute):
if self.tangents==attribute:
return self.dynamicTangents
else:
return FaceVArray.isDynamicAttribute(self, attribute)
def createResources(self):
FaceVArray.createResources(self)
if self.needTangents():
self.tangents = self.generateTangents()