Struct Buffer2D

• Defined in File geometry2d.h

Inheritance Relationships

Derived Type

• public CE::Rendering::OpenGL::VertexArray (Struct VertexArray)

Struct Documentation

struct Buffer2D

Retained immutable vertex upload, independent of material/image bindings.

Metadata access requires no native binding; draw operations require the live backend.

See also

Rendering guide

Subclassed by CE::Rendering::OpenGL::VertexArray

Public Functions

virtual ~Buffer2D() = default

Release logical geometry ownership; native destruction or deferred retirement belongs to the backend.

virtual Layout2D vertex_layout() const noexcept = 0

Declaration: [[nodiscard]]

Returns:

Immutable layout metadata used by CPU pipeline validation; no backend bind occurs.

virtual Topology topology() const noexcept = 0

Declaration: [[nodiscard]]

Returns:

Primitive interpretation selected at upload; a draw does not override it.

virtual std::size_t vertex_count() const noexcept = 0

Declaration: [[nodiscard]]

Returns:

Total uploaded vertices, measured in vertices rather than bytes or primitives.

virtual void bind() const = 0

Bind uploaded geometry on its backend owner/current context.

The caller retains geometry and its live domain; binding does not select a program, material or image.

virtual void draw(std::size_t first_vertex, std::size_t vertex_count) const = 0

Draw a contiguous range using this upload’s topology.

Parameters:

• first_vertex – Zero-based first vertex, not a byte offset.

• vertex_count – Number of vertices; the range must fit and contain complete primitives. Requires the backend owner/current context and compatible draw state. Concrete backends perform native/domain validation and may throw; this interface does not publish a frame.