# panda3d.core.AuxBitplaneAttrib¶

class AuxBitplaneAttrib

Bases: RenderAttrib

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.

Inheritance diagram

static make() → RenderAttrib

Constructs a default AuxBitplaneAttrib object.

Return type

RenderAttrib

static make(outputs: int) → RenderAttrib

Constructs a specified AuxBitplaneAttrib object.

Return type

RenderAttrib

static makeDefault() → RenderAttrib

Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be.

Return type

RenderAttrib

getOutputs() → int

Returns the AuxBitplaneAttrib output bits.

static getClassSlot() → int
static getClassType() → TypeHandle
Return type

TypeHandle

property outputs

Returns the AuxBitplaneAttrib output bits.

Return type

int

property class_slot
Return type

int

enum AuxBitplaneOutput
enumerator ABO_glow = 1
enumerator ABO_aux_normal = 2
enumerator ABO_aux_glow = 4