# ShaderGenerator

from pandac.PandaModules import ShaderGenerator

Class : ShaderGenerator
Description : The ShaderGenerator is a device that effectively replaces the classic fixed function pipeline with a 'next-gen' fixed function pipeline. The next-gen fixed function pipeline supports features like normal mapping, gloss mapping, cartoon lighting, and so forth. It works by automatically generating a shader from a given RenderState.
Currently, there is a single default ShaderGenerator object. It is our intent that in time, people will write classes that derive from ShaderGenerator but which yield slightly different results.
The ShaderGenerator owes its existence to the 'Bamboo Team' at Carnegie Mellon's Entertainment Technology Center. This is a group of students who, as a semester project, decided that next-gen graphics should be accessible to everyone, even if they don't know shader programming. The group consisted of:
Aaron Lo, Programmer Heegun Lee, Programmer Erin Fernandez, Artist/Tester Joe Grubb, Artist/Tester Ivan Ortega, Technical Artist/Tester
Thanks to them!

## Inheritance:

ShaderGenerator: ShaderGeneratorBase
ShaderGeneratorBase: TypedWritableReferenceCount
TypedWritableReferenceCount: TypedWritable ReferenceCount
TypedWritable: TypedObject
TypedObject: MemoryBase
MemoryBase:
ReferenceCount: MemoryBase

## Methods of ShaderGenerator:

ShaderGenerator (Constructor)
getClassType

## Methods of ShaderGeneratorBase:

getClassType
getDefault
setDefault
synthesizeShader

## Methods of TypedWritableReferenceCount:

getClassType

## Methods of TypedWritable:

getClassType

## Methods of TypedObject:

getClassType
getType
getTypeIndex
isExactType
isOfType

## Methods of ReferenceCount:

getClassType
getRefCount
ref
testRefCountIntegrity
testRefCountNonzero
unref

ShaderGenerator ShaderGenerator::ShaderGenerator(void); Description: Create a ShaderGenerator. This has no state, except possibly to cache certain results.

getClassType static TypeHandle ShaderGenerator::get_class_type(void); Undocumented function.

getClassType static TypeHandle ShaderGeneratorBase::get_class_type(void); Undocumented function.

getDefault static ShaderGeneratorBase *ShaderGeneratorBase::get_default(void); Description: Get a pointer to the default shader generator.

setDefault static void ShaderGeneratorBase::set_default(ShaderGeneratorBase *generator); Description: Set the default shader generator.

synthesizeShader virtual ConstPointerTo< RenderAttrib > ShaderGeneratorBase::synthesize_shader(RenderState const *rs) = 0; Undocumented function.

getClassType static TypeHandle TypedWritableReferenceCount::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedWritable::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedObject::get_class_type(void); Undocumented function.

getType virtual TypeHandle TypedObject::get_type(void) const = 0; Derived classes should override this function to return get_class_type().

getTypeIndex int TypedObject::get_type_index(void) const; Description: Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. This is equivalent to get_type().get_index().

isExactType bool TypedObject::is_exact_type(TypeHandle handle) const; Description: Returns true if the current object is the indicated type exactly.

isOfType bool TypedObject::is_of_type(TypeHandle handle) const; Description: Returns true if the current object is or derives from the indicated type.

getClassType static TypeHandle ReferenceCount::get_class_type(void); Undocumented function.

getRefCount int ReferenceCount::get_ref_count(void) const; Description: Returns the current reference count.

ref void ReferenceCount::ref(void) const; Description: Explicitly increments the reference count. User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

testRefCountIntegrity bool ReferenceCount::test_ref_count_integrity(void) const; Description: Does some easy checks to make sure that the reference count isn't completely bogus. Returns true if ok, false otherwise.

testRefCountNonzero bool ReferenceCount::test_ref_count_nonzero(void) const; Description: Does some easy checks to make sure that the reference count isn't zero, or completely bogus. Returns true if ok, false otherwise.

unref bool ReferenceCount::unref(void) const; Description: Explicitly decrements the reference count. Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic; plus, we don't have a virtual destructor anyway.) However, see the helper function unref_delete(). User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is true if the new reference count is nonzero, false if it is zero.