Class: GeometryVertexBuffer
Defined in: src/core/geometry/GeometryVertexBuffer.ts:15
Holds the vertex attribute data of a geometry and manages its backing GPU vertex buffer and attribute layout.
Constructors
Constructor
new GeometryVertexBuffer():
GeometryVertexBuffer
Defined in: src/core/geometry/GeometryVertexBuffer.ts:76
Returns
GeometryVertexBuffer
Properties
vertexCount
vertexCount:
number=0
Defined in: src/core/geometry/GeometryVertexBuffer.ts:17
vertexGPUBuffer
vertexGPUBuffer:
VertexGPUBuffer
Defined in: src/core/geometry/GeometryVertexBuffer.ts:18
geometryType
geometryType:
GeometryVertexType=GeometryVertexType.split
Defined in: src/core/geometry/GeometryVertexBuffer.ts:19
bufferChanged
bufferChanged:
boolean=false
Defined in: src/core/geometry/GeometryVertexBuffer.ts:28
Set to true whenever vertexGPUBuffer is replaced by a fresh allocation (first build or a packing-size change). Consumers that captured the GPU buffer handle — e.g. compute pipelines writing deformed/generated vertices — must observe this flag and rebind, otherwise they keep writing into an orphaned buffer while the renderer draws the new one. The owner resets it after handling.
Accessors
vertexBufferLayouts
Get Signature
get vertexBufferLayouts():
VertexBufferLayout[]
Defined in: src/core/geometry/GeometryVertexBuffer.ts:82
Returns
Methods
setComposeBinLayout()
setComposeBinLayout(
layout):void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:69
Record the real interleave layout of a compose_bin geometry's packed vertex buffer (attribute name → byte offset within the stride), so each pass's VertexState can be derived independently of how many attributes that pass's shader declares.
Parameters
layout
Returns
void
getPipelineLayout()
getPipelineLayout(
shaderReflection):VertexBufferLayout[]
Defined in: src/core/geometry/GeometryVertexBuffer.ts:97
Vertex buffer layout for a specific pass's pipeline VertexState. For compose geometry this is derived per-pass from the pass's shader reflection: each attribute the pass declares is mapped to its own shaderLocation but the canonical (by-name) byte offset and the shared canonical arrayStride, so a pass simply strides over the attributes it does not read. For split / compose_bin it falls back to the shared layout (their per-pass decoupling is not done yet). Consumed by RenderShaderPass.createPipeline; draw-time binding still uses vertexBufferLayouts.
Parameters
shaderReflection
ShaderReflection
Returns
needsRebuild()
needsRebuild(
shaderReflection):boolean
Defined in: src/core/geometry/GeometryVertexBuffer.ts:163
Whether createVertexBuffer must run for this pass's reflection (on top of the geometry's own _onChange). For compose this is true only when the reflection introduces an attribute not yet in the canonical packing — after the union converges, repeated passes short-circuit so a compute-written buffer is not re-uploaded with rest-pose data. For split / compose_bin it preserves the legacy "a declared shader slot is missing from the layout" check.
Parameters
shaderReflection
ShaderReflection
Returns
boolean
createVertexBuffer()
createVertexBuffer(
vertexDataInfos,shaderReflection):void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:185
Parameters
vertexDataInfos
Map<string, VertexAttributeData>
shaderReflection
ShaderReflection
Returns
void
upload()
upload(
attribute,vertexDataInfo):void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:391
Parameters
attribute
string
vertexDataInfo
Returns
void
updateAttributes()
updateAttributes(
vertexDataInfos):void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:420
Parameters
vertexDataInfos
Map<string, VertexAttributeData>
Returns
void
compute()
compute():
void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:459
Returns
void
destroy()
destroy():
void
Defined in: src/core/geometry/GeometryVertexBuffer.ts:463
Returns
void