panda3d.core.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¶