ShaderExpansion

Inheritance:

Methods of ShaderExpansion:

Methods of TypedReferenceCount:

Methods of TypedObject:

Methods of ReferenceCount:

getClassType
static TypeHandle ShaderExpansion::get_class_type(void);

Undocumented function.

getErrorFlag
bool ShaderExpansion::get_error_flag(void) const;

Description: Returns true if the shader contains a compile-time error. This doesn't tell you whether or not the shader is supported on the current video card.

getHeader
string const &ShaderExpansion::get_header(void) const;

Description: Return the ShaderExpansion's header line.

getName
string const &ShaderExpansion::get_name(void) const;

Filename: shaderExpansion.I Heavily Modified: jyelon (Sep05)
PANDA 3D SOFTWARE Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
All use of this software is subject to the terms of the Panda 3d Software license. You should have received a copy of this license along with this source code; you will also find a current copy of the license at http://etc.cmu.edu/panda3d/docs/license/ .
To contact the maintainers of this program write to panda3d-general@lists.sourceforge.net .
Description: Return the ShaderExpansion's text.

getText
string const &ShaderExpansion::get_text(void) const;

Description: Return the ShaderExpansion's text.

isPrepared
bool ShaderExpansion::is_prepared(PreparedGraphicsObjects *prepared_objects) const;

Description: Returns true if the shader has already been prepared or enqueued for preparation on the indicated GSG, false otherwise.

prepare
void ShaderExpansion::prepare(PreparedGraphicsObjects *prepared_objects);

Description: Indicates that the shader should be enqueued to be prepared in the indicated prepared_objects at the beginning of the next frame. This will ensure the texture is already loaded into texture memory if it is expected to be rendered soon.
Use this function instead of prepare_now() to preload textures from a user interface standpoint.

prepareNow
ShaderContext *ShaderExpansion::prepare_now(PreparedGraphicsObjects *prepared_objects, GraphicsStateGuardianBase *gsg);

Description: Creates a context for the texture on the particular GSG, if it does not already exist. Returns the new (or old) ShaderContext. This assumes that the GraphicsStateGuardian is the currently active rendering context and that it is ready to accept new textures. If this is not necessarily the case, you should use prepare() instead.
Normally, this is not called directly except by the GraphicsStateGuardian; a texture does not need to be explicitly prepared by the user before it may be rendered.

release
bool ShaderExpansion::release(PreparedGraphicsObjects *prepared_objects);

Description: Frees the texture context only on the indicated object, if it exists there. Returns true if it was released, false if it had not been prepared.

releaseAll
int ShaderExpansion::release_all(void);

Description: Frees the context allocated on all objects for which the texture has been declared. Returns the number of contexts which have been freed.

getClassType
static TypeHandle TypedReferenceCount::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.