picogl.gpu.buffers.attributes

Attribute and layout specification handling module.

This module defines data structures for specifying attributes and layout descriptors in a graphical or geometrical context. These structures are used to describe how data is stored, accessed, and organized for rendering or processing purposes.

Classes

`AttributeSpec`	Attribute specification.
`LayoutDescriptor`	Layout descriptor.
`CanonicalVertexAttrs`	Canonical Vertex Attrs
`VBOAttrs`	VBO Attrs

Functions

legacy_attribute_spec(→ AttributeSpec)

Build an AttributeSpec with aligned legacy role, vbo_type, and name.

Module Contents

class picogl.gpu.buffers.attributes.AttributeSpec[source]

Attribute specification.

name: str[source]

index: int[source]

size: int[source]

type: picogl.backend.gl.enums.GLNumeric[source]

normalized: bool[source]

stride: int[source]

offset: int[source]

vbo_type: picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType[source]

role: picogl.gpu.buffers.vertex.aliases.VertexBufferRole[source]

picogl.gpu.buffers.attributes.legacy_attribute_spec(role: picogl.gpu.buffers.vertex.aliases.VertexBufferRole, index: int, *, size: int = 3, name: str | picogl.gpu.buffers.vertex.aliases.VertexBufferRole | None = None, type: picogl.backend.gl.enums.GLNumeric, normalized: bool = False, stride: int = 0, offset: int = 0) → AttributeSpec[source]: Build an AttributeSpec with aligned legacy role, vbo_type, and name.

class picogl.gpu.buffers.attributes.LayoutDescriptor[source]

Layout descriptor.

attributes: List[AttributeSpec][source]

_cache: dict[picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType, AttributeSpec] | None = None[source]

__getitem__(vbo_type: picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType) → AttributeSpec[source]

get_attr(vbo_type: picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType) → AttributeSpec[source]

has_attr(vbo_type: picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType) → bool[source]

as_dict() → dict[picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType, AttributeSpec][source]

property attr_dict: dict[picogl.gpu.buffers.vertex.vbo.vbo_class.VBOType, AttributeSpec][source]: dict

class picogl.gpu.buffers.attributes.CanonicalVertexAttrs[source]

Bases: picogl.utils.strenum.StrEnum

Canonical Vertex Attrs

POSITIONS = 'positions'[source]

COLORS = 'colors'[source]

NORMALS = 'normals'[source]

INDICES = 'indices'[source]

class picogl.gpu.buffers.attributes.VBOAttrs[source]

VBO Attrs

VBO[source]

NBO[source]

CBO[source]

EBO[source]

ALL[source]