Panda3D
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Modern frame buffers can have 'aux' bitplanes, which are additional bitplanes above and beyond the standard depth and color. More...
#include "auxBitplaneAttrib.h"
Public Types | |
enum | AuxBitplaneOutput { ABO_glow = 1, ABO_aux_normal = 2, ABO_aux_glow = 4 } |
Public Member Functions | |
virtual TypeHandle | force_init_type () |
int | get_outputs () const |
Returns the AuxBitplaneAttrib output bits. | |
virtual int | get_slot () const |
virtual TypeHandle | get_type () const |
virtual void | output (ostream &out) const |
virtual void | write_datagram (BamWriter *manager, Datagram &dg) |
Writes the contents of this object to the datagram for shipping out to a Bam file. | |
Static Public Member Functions | |
static | CPT (RenderAttrib) make() |
static | CPT (RenderAttrib) make(int outputs) |
static | CPT (RenderAttrib) make_default() |
static int | get_class_slot () |
static TypeHandle | get_class_type () |
static void | init_type () |
static void | register_with_read_factory () |
Tells the BamReader how to create objects of type AuxBitplaneAttrib. | |
Protected Member Functions | |
virtual int | compare_to_impl (const RenderAttrib *other) const |
Intended to be overridden by derived AuxBitplaneAttrib types to return a unique number indicating whether this AuxBitplaneAttrib is equivalent to the other one. | |
void | fillin (DatagramIterator &scan, BamReader *manager) |
This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new AuxBitplaneAttrib. | |
Static Protected Member Functions | |
static TypedWritable * | make_from_bam (const FactoryParams ¶ms) |
This function is called by the BamReader's factory when a new object of type AuxBitplaneAttrib is encountered in the Bam file. |
Modern frame buffers can have 'aux' bitplanes, which are additional bitplanes above and beyond the standard depth and color.
This attrib controls what gets rendered into those additional bitplanes. It can also affect what goes into the alpha channel of the primary color buffer.
ABO_glow: copy the glow map into the alpha channel of the primary frame buffer. If there is no glow map, set it to zero. Caveat: it is not possible to write glow or depth values to the framebuffer alpha channel at the same time as using alpha blending or alpha testing. Any attempt to use transparency, blending, or alpha testing will cause this flag to be overridden.
ABO_aux_normal: put the camera-space normal into the into the R,G components of the first auxiliary bitplane.
ABO_aux_modelz: put the clip-space Z coordinate of the center of the model (after perspective divide) into the B channel of the first auxiliary bitplane.
ABO_aux_glow: put a copy of the glow map into the alpha channel of the first auxiliary bitplane. If there is no glow map, set it to zero.
AuxBitplaneAttrib is relevant only when shader generation is enabled. Otherwise, it has no effect.
Definition at line 57 of file auxBitplaneAttrib.h.
int AuxBitplaneAttrib::compare_to_impl | ( | const RenderAttrib * | other | ) | const [protected, virtual] |
Intended to be overridden by derived AuxBitplaneAttrib types to return a unique number indicating whether this AuxBitplaneAttrib is equivalent to the other one.
This should return 0 if the two AuxBitplaneAttrib objects are equivalent, a number less than zero if this one should be sorted before the other one, and a number greater than zero otherwise.
This will only be called with two AuxBitplaneAttrib objects whose get_type() functions return the same.
Reimplemented from RenderAttrib.
Definition at line 90 of file auxBitplaneAttrib.cxx.
void AuxBitplaneAttrib::fillin | ( | DatagramIterator & | scan, |
BamReader * | manager | ||
) | [protected, virtual] |
This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new AuxBitplaneAttrib.
Reimplemented from RenderAttrib.
Definition at line 152 of file auxBitplaneAttrib.cxx.
References DatagramIterator::get_int32().
Referenced by make_from_bam().
int AuxBitplaneAttrib::get_outputs | ( | ) | const [inline] |
Returns the AuxBitplaneAttrib output bits.
Definition at line 34 of file auxBitplaneAttrib.I.
Referenced by ShaderGenerator::analyze_renderstate().
TypedWritable * AuxBitplaneAttrib::make_from_bam | ( | const FactoryParams & | params | ) | [static, protected] |
This function is called by the BamReader's factory when a new object of type AuxBitplaneAttrib is encountered in the Bam file.
It should create the AuxBitplaneAttrib and extract its information from the file.
Definition at line 133 of file auxBitplaneAttrib.cxx.
References fillin().
Referenced by register_with_read_factory().
void AuxBitplaneAttrib::register_with_read_factory | ( | ) | [static] |
Tells the BamReader how to create objects of type AuxBitplaneAttrib.
Definition at line 107 of file auxBitplaneAttrib.cxx.
References BamReader::get_factory(), make_from_bam(), and Factory< Type >::register_factory().
Writes the contents of this object to the datagram for shipping out to a Bam file.
Reimplemented from RenderAttrib.
Definition at line 118 of file auxBitplaneAttrib.cxx.
References Datagram::add_int32().