panda3d.core.ColorBlendAttrib

from panda3d.core import ColorBlendAttrib

class ColorBlendAttrib

Bases: RenderAttrib

This specifies how colors are blended into the frame buffer, for special effects. This overrides transparency if transparency is also specified.

Inheritance diagram

static makeOff() → RenderAttrib

Constructs a new ColorBlendAttrib object that disables special-effect blending, allowing normal transparency to be used instead.

Return type

RenderAttrib

static make(mode: Mode) → RenderAttrib

Constructs a new ColorBlendAttrib object.

Deprecated: Use the three- or four-parameter constructor instead.

Return type

RenderAttrib

static make(rgb_mode: Mode, rgb_a: Operand, rgb_b: Operand, alpha_mode: Mode, alpha_a: Operand, alpha_b: Operand, color: LColor) → RenderAttrib

Constructs a new ColorBlendAttrib object that enables special-effect blending. This supercedes transparency. This form is used to specify separate blending parameters for the RGB and alpha channels.

Return type

RenderAttrib

static make(mode: Mode, a: Operand, b: Operand, color: LColor) → RenderAttrib

Constructs a new ColorBlendAttrib object that enables special-effect blending. This supercedes transparency. The given mode and operands are used for both the RGB and alpha channels.

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

getMode() → Mode

Returns the blending mode for the RGB channels.

Return type

Mode

getOperandA() → Operand

Returns the RGB multiplier for the first component.

Return type

Operand

getOperandB() → Operand

Returns the RGB multiplier for the second component.

Return type

Operand

getAlphaMode() → Mode

Returns the blending mode for the alpha channel.

Return type

Mode

getAlphaOperandA() → Operand

Returns the alpha multiplier for the first component.

Return type

Operand

getAlphaOperandB() → Operand

Returns the alpha multiplier for the second component.

Return type

Operand

getColor() → LColor

Returns the constant color associated with the attrib.

Return type

LColor

involvesConstantColor() → bool

Returns true if the this attrib uses the constant color, false otherwise.

involvesConstantColor(operand: Operand) → bool

Returns true if the indicated operand uses the constant color, false otherwise.

involvesColorScale() → bool

Returns true if the this attrib uses the color scale attrib, false otherwise.

involvesColorScale(operand: Operand) → bool

Returns true if the indicated operand uses the color scale attrib, false otherwise.

static getClassSlot() → int

static getClassType() → TypeHandle

Return type

TypeHandle

property rgb_mode

Returns the blending mode for the RGB channels.

Return type

Mode

property rgb_operand_a

Returns the RGB multiplier for the first component.

Return type

Operand

property rgb_operand_b

Returns the RGB multiplier for the second component.

Return type

Operand

property alpha_mode

Returns the blending mode for the alpha channel.

Return type

Mode

property alpha_operand_a

Returns the alpha multiplier for the first component.

Return type

Operand

property alpha_operand_b

Returns the alpha multiplier for the second component.

Return type

Operand

property color

Returns the constant color associated with the attrib.

Return type

LColor

property class_slot

Return type

int

enum Mode

enumerator M_none = 0

Blending is disabled

enumerator M_add = 1

incoming color * A + fbuffer color * B

enumerator M_subtract = 2

incoming color * A - fbuffer color * B

enumerator M_inv_subtract = 3

fbuffer color * B - incoming color * A

enumerator M_min = 4

min(incoming color, fbuffer color)

enumerator M_max = 5

max(incoming color, fbuffer color)

enum Operand

enumerator O_zero = 0

enumerator O_one = 1

enumerator O_incoming_color = 2

enumerator O_one_minus_incoming_color = 3

enumerator O_fbuffer_color = 4

enumerator O_one_minus_fbuffer_color = 5

enumerator O_incoming_alpha = 6

enumerator O_one_minus_incoming_alpha = 7

enumerator O_fbuffer_alpha = 8

enumerator O_one_minus_fbuffer_alpha = 9

enumerator O_constant_color = 10

enumerator O_one_minus_constant_color = 11

enumerator O_constant_alpha = 12

enumerator O_one_minus_constant_alpha = 13

enumerator O_incoming_color_saturate = 14

valid only for operand a

enumerator O_incoming1_color = 15

The following are used for dual-source blending, where the fragment shader outputs a second color that will be used for blending.

enumerator O_one_minus_incoming1_color = 16

enumerator O_incoming1_alpha = 17

enumerator O_one_minus_incoming1_alpha = 18

enumerator O_color_scale = 19

These modes are being considered for deprecation.

enumerator O_one_minus_color_scale = 20

enumerator O_alpha_scale = 21

enumerator O_one_minus_alpha_scale = 22